Find flights
Deals
Insights
When to book
FAQs & Tips
Direct Flights
Airlines

SEA - LHR

C$ 362 Find cheap flights from Seattle to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to London departing on 9/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sat 15/6
Sat 22/6

Search hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to London.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to London.
In the last 7 days, travellers have searched 42,211,976 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Cheap flight deals from Seattle to London (SEA-LHR)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to London that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
7:40 a.m. - 6:30 a.m.SEA-LHR
14h 50m1 stop
8:40 a.m. - 6:26 p.m.LHR-SEA
17h 46m2 stops
C$ 816Air Canada
Find Deal
Sun, 29 Sep - Tue, 8 Oct
8:05 p.m. - 5:50 p.m.SEA-LHR
13h 45m1 stop
12:10 p.m. - 6:15 p.m.LHR-SEA
14h 05m1 stop
C$ 817Aer Lingus
Find Deal
Fri, 8 Nov - Sun, 17 Nov
10:40 a.m. - 11:50 a.m.SEA-LHR
17h 10m2 stops
6:55 a.m. - 4:59 p.m.LHR-SEA
18h 04m1 stop
C$ 819Lufthansa
Find Deal
Tue, 8 Oct - Tue, 15 Oct
9:15 p.m. - 2:50 p.m.SEA-LHR
9h 35mdirect
11:30 a.m. - 5:50 p.m.LHR-SEA
14h 20m1 stop
C$ 827Delta
Find Deal
Sun, 29 Sep - Tue, 8 Oct
1:55 p.m. - 1:15 p.m.SEA-LHR
15h 20m1 stop
11:30 a.m. - 5:50 p.m.LHR-SEA
14h 20m1 stop
C$ 828Delta
Find Deal
Tue, 1 Oct - Tue, 8 Oct
1:30 p.m. - 6:50 a.m.SEA-LHR
9h 20mdirect
9:50 a.m. - 11:35 a.m.LHR-SEA
9h 45mdirect
C$ 838British Airways
Find Deal
Wed, 2 Oct - Wed, 9 Oct
3:50 p.m. - 11:55 a.m.SEA-LHR
12h 05m1 stop
1:05 p.m. - 5:55 p.m.LHR-SEA
12h 50m1 stop
C$ 880Icelandair
Find Deal
Sun, 6 Oct - Fri, 11 Oct
4:30 p.m. - 9:50 a.m.SEA-LHR
9h 20mdirect
6:15 a.m. - 11:20 a.m.LHR-SEA
13h 05m1 stop
C$ 896Virgin Atlantic
Find Deal
Wed, 25 Sep - Sat, 5 Oct
1:30 p.m. - 6:50 a.m.SEA-LHR
9h 20mdirect
9:45 a.m. - 11:30 a.m.LHR-SEA
9h 45mdirect
C$ 905British Airways
Find Deal
Thu, 3 Oct - Thu, 10 Oct
3:50 p.m. - 11:55 a.m.SEA-LHR
12h 05m1 stop
1:05 p.m. - 5:55 p.m.LHR-SEA
12h 50m1 stop
C$ 928Icelandair
Find Deal
Thu, 3 Oct - Wed, 23 Oct

Flights from Seattle to London - Travel Insights & Trends

Get data-powered insights and trends into flights from Seattle to London to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Seattle to London Heathrow Airport?

The average price of all flights from Seattle to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.
When flying from Seattle to London Heathrow Airport, you should consider leaving on a Tuesday and avoid Wednesdays if you are looking for the best rates. For your return to Seattle, you’ll find the best rates on Tuesdays and the most expensive ones on Mondays.

What is the cheapest month to fly from Seattle to London Heathrow Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Seattle to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Seattle to London Heathrow Airport is January, where tickets cost C$ 954 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is C$ 1,665 and C$ 1,508 respectively.

How far in advance should I book a flight from Seattle to London Heathrow Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Seattle to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Seattle to London Heathrow Airport, you should book around 4 days before departure. For the absolute cheapest price, our data suggests you should book 75 days before departure.

Which airlines provide the cheapest flights from Seattle to London Heathrow Airport?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The cheapest return flight ticket from Seattle to London Heathrow Airport found by KAYAK users in the last 72 hours was for C$ 816 on Air Canada, followed by Aer Lingus (C$ 817). One-way flight deals have also been found from as low as C$ 362 on Icelandair and from C$ 505 on WestJet.

Which airlines fly most frequently between Seattle and London Heathrow Airport?

In normal times, British Airways flies from Seattle to London Heathrow Airport up to 5 times per day, Delta up to 2 times per day, and Virgin Atlantic 1 time per day.

Which airlines fly direct between Seattle and London Heathrow Airport?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Seattle to London Heathrow Airport.
There are 3 airlines that fly direct from Seattle to London Heathrow Airport. They are: British Airways, Delta and Virgin Atlantic. The cheapest price of all airlines flying this route was found with Virgin Atlantic at C$ 855. On average, the best prices for this route can be found at Delta.

How many flights are there between Seattle and London Heathrow Airport per day?

Each day, there are between 7 and 9 nonstop flights that take off from Seattle and land in London Heathrow Airport, with an average flight time of 9h 24m. The most common departure time is 7:00 p.m. and most flights take off in the evening. Each week, there are 59 flights. The most frequent day of departure is Thursday, when 15% of all weekly flights depart. The fewest flights depart on a Sunday.

Which cabin class options are there for flights between Seattle and London Heathrow Airport?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Seattle to London Heathrow Airport take?

A direct flight to London Heathrow Airport will take on average 9h 20m to travel the 12,387 km flying distance from Seattle.

What’s the earliest departure time from Seattle to London Heathrow Airport?

Early birds can take the earliest flight from Seattle at 1:30 pm and will be landing in London Heathrow Airport at 6:50 am.

What’s the latest departure time from Seattle to London Heathrow Airport?

If you prefer to fly at night, the latest flight from Seattle to London Heathrow Airport jets off at 9:10 pm and lands at 2:50 pm.

Good to know

Low season

January

High season

July

Cheapest flight

C$ 362
Best time to beat the crowds (21% less expensive on average)
Most popular time to fly (26% more expensive on average)
Flight from Seattle to London Heathrow Airport

When to book flights from Seattle to London

Are your dates flexible? Find out the best times to travel from Seattle to London based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Seattle to London Heathrow Airport flights

  • Where can passengers spend the night at Seattle Tacoma international airport?

    If you are having an early morning flight at Seattle Tacoma international airport and want to spend the night at the airport, there are armrest seats and benches. You can also bring a sleeping bag and heavy clothes to lay on one of the floors with carpets. Passengers can use the meditation room, which provides a peaceful and quiet place. We recommend passengers carry noise-canceling headphones and earplugs to avoid loud noises from the busy airport. Passengers willing to spend extra money can spend the night at the nearby hotels. Nearby hotels offering free shuttle services to and from the airport include Crowne Plaza Seattle Airport, Radisson Hotel Seattle Airport and La Quinta Inn & Suites Seattle SeaTac airport.

  • Does Seattle Tacoma international airport offer parking services?

    Passengers who want to leave their vehicle at the airport can reserve a parking lot by booking online before to avoid inconveniences. Seattle Tacoma international airport offers long-term and short-term parking services. The long-term parking is located on the fourth floor of the parking garage. There are also self-service kiosks outside gates B, C, D, N and S, where passengers can download their favorite movies for their trip.

  • Which services are available at Seattle Tacoma international airport?

    If you arrive early at Seattle Tacoma international airport, enjoy the services offered at the airport. Loosen your stiff muscles at the massage bars near gate A5 on the airside of level 5. Passengers who want to freshen up can take advantage of Delta airlines sky club.

  • Where can passengers spend time on arrival at London Heathrow airport?

    Traveling can sometimes be cumbersome, and passengers may want to relax or take a nap after arrival. Aerotol London Heathrow airport, located inside LHR airport, offers guest rooms. Passengers can relax and finish work upon arrival at the airport. Plaza Premium Lounge & No. 1 Heathrow is a hotel inside the airport with private napping rooms where passengers can relax. There are also nearby hotels where passengers can relax and have their meals.

  • What is the cheapest flight from Seattle to London Heathrow Airport?

    In the last 3 days, the lowest price for a flight from Seattle to London Heathrow Airport was C$ 266 for a one-way ticket and C$ 599 for a round-trip.

  • Which airlines offer Wi-Fi service onboard planes from Seattle to London Heathrow Airport?

    All the following airlines offer inflight Wi-Fi service on the Seattle to London Heathrow Airport flight route: American Airlines, Air France, Delta, KLM, Lufthansa, Virgin Atlantic, United Airlines, and Finnair.

  • Which aircraft models fly most regularly from Seattle to London Heathrow Airport?

    The Boeing 787-9 Dreamliner is the aircraft model that flies most regularly on the Seattle to London Heathrow Airport flight route.

  • Which airline alliances offer flights from Seattle to London Heathrow Airport?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Seattle and London Heathrow Airport, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Seattle to London Heathrow Airport?

    There are direct flights from Seattle to London Heathrow Airport on a daily basis.

  • Which is the best airline for flights from Seattle to London, Delta or Virgin Atlantic?

    The two airlines most popular with KAYAK users for flights from Seattle to London are Delta and Virgin Atlantic. With an average price for the route of C$ 1,069 and an overall rating of 8.0, Delta is the most popular choice. Virgin Atlantic is also a great choice for the route, with an average price of C$ 1,138 and an overall rating of 7.7.

  • How does KAYAK find such low prices on flights from Seattle to London Heathrow Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to London Heathrow Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to London Heathrow Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from Seattle is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to London Heathrow Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London Heathrow Airport with an airline and back to Seattle with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to London Heathrow Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London Heathrow Airport from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from Seattle to London Heathrow Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for C$ 814 or less one-way and C$ 1,068 or less round-trip.
  • If you need any assistance at Seattle Tacoma International Airport (SEA), there are airport volunteers in blue jackets who provide help to stranded passengers. Customer representatives are in red vests with iPads, directing passengers where they wish to go.
  • If you want a quiet place to pray and meditate at London Heathrow Airport (LHR), there are multi-faith prayer rooms. They are located in terminals 2, 3, 4 and 5.
  • Passengers traveling on this route have many options to consider. You can fly directly from Seattle Tacoma international airport to London Heathrow airport using Aer Lingus, Singapore Airlines, Virgin Atlantic, American Airlines, AeroMexico, Delta, KLM, Iberia, Finnair and British Airways. There are also flights with stopovers which are cheaper compared to direct flights.
  • For passengers who want to avoid the stress of carrying heavy bags at London Heathrow airport, there is a company known as Excess Baggage Company providing storage facilities. They are found at terminals 2, 3, 4 and 5.
  • We recommend passengers carry their water bottles since Seattle Tacoma international airport has free water filling stations. The stations are located at gates A20, A5, C2, D1, and S gates and the central terminal.
See more tips

Prefer to fly non-stop from Seattle to London Heathrow Airport?

Find which airlines fly direct from Seattle/Tacoma Intl to Heathrow, which days they fly and book direct flights.

Nonstop departures

Seattle/Tacoma Intl to London Heathrow

Monday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

Tuesday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

Wednesday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

Thursday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

Friday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

Saturday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

Sunday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

See more nonstop flights

Nonstop returns

London Heathrow to Seattle/Tacoma Intl

Monday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

Tuesday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

Wednesday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

Thursday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

Friday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

Saturday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

Sunday

Aer Lingus,Aeromexico,Air France, +8 more

Aer Lingus,Aeromexico, +9 more

See more nonstop flights
See more nonstop flights

Top 5 airlines serving from Seattle to London

 
See real verified KAYAK customer reviews for airlines flying from Seattle to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to London? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10673 reviews
8.6Crew
7.9Comfort
7.4Food
8.0Entertainment
8.2Boarding
Airline reviews

The plane from SNA wouldn’t start after 5 tries. The team gave me an option of flying direct from LAX and giving me a Lyft ride there! Perfect!

10.0 ExcellentSash, May 2024SEA - HNL
Read more about Delta reviews

The plane from SNA wouldn’t start after 5 tries. The team gave me an option of flying direct from LAX and giving me a Lyft ride there! Perfect!

Had a broken tray in business class. Crew just shrugged it off.

Everything was great except for the seat. The backrest would not stay in the upright position.

public website still broken for years randomly blocking browsers with privacy options active after loading a page maybe once. check-in on laptop was almost impossible but eventually randomly worked. had to print pass at airport since couldn't get back in to load digital pass on mobile firefox or chrome. red eye flight so smooth onboarding, plenty of room to spread out, easy offboarding. onboard wifi instructions mention vpn can cause problems connecting but fails to also mention private dns. no printed or built in menu list, seems weird to require personal device to point at qr code link for menu which does not even allow direct ordering. people with health condition risk related dietary restrictions trying to avoid for example cholesterol and sugar are left guessing what they can order either way without nutritional info highlights (cranberry juice was minute maid cocktail with as much suger as typical can of soda). tap to pay wasn't working and always seems sketchy to manually enter card info. good movie variety, so limited tv was okay.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Mi primera conexión se retrasó por lo cual perdí mi segunda conexión la cual salió adelantada

Crew was not friendly when I went to request a seat change.

There were choices for the snacks. Good choices and tasty lunch and breakfast as well.

The flight crew was amazing. I’m very tall and they moved me to an exit row unsolicited!!! Amazing service.

Cabin crew on our flight showed lack of any customer service gruff and acting annoyed if you asked anything and I mean anything Example a man on the seat over dropped his beer on my husbands blanket We asked if we could switch out blankets cabin crew Said. No we don’t have any extras OK well can you take the wet one Cabin crew looked disgusted and annoyed Took it no OK or yes just a growl

Quick flight. But cabin crew were very noisy and talking too much, especially when we were seated at the back of the plane trying to sleep through the night .

My ticket was for Premium Economy and all the seats were taken, I was placed in Economy class and I’m looking for a refund.

The delay was an issue. Other than that. Every thing good

Staff didn’t check cabin well for landing seemed more interested in chatting to each other. Food was poor and differed from pre order.

We were in the last group to be called to the flight - which was 30 minutes late taking off. While we were lucky enough to have been given bulkhead seats (due to a medical condition I’d told them about beforehand) the seats weren’t particularly comfortable. A crying baby for the whole trip made things worse, so the crew managed very well with coping. The final thing I’d say was that there wasn’t enough food served during the flight.

Very good. Glad we had Premium for the flight out.

We flew Upper Class from London to The Turks and Caicos. Check in was amazing. Our ldriver too us directly to a special entrance to terminal 3. It took 10 minutes to check in and clear customs. Amazing! The VA lounge is large and comfortable. Boarding the flight was easy and without a wait. The crew was excellent. But the seats were awful, strange and uncomfortable. Having a comfortable flat bed seat is the reason we pays 1000s extra. The VA 787 uses a reverse herringbone configuration. Look it up. You have your back to the window and are facing the aisle with no privacy. Turning the seat into a bed requires assistance from the crew so not very spontaneous. . The food was ok. A bit tasteless and meager portions. Had to pay for WiFi. I believe VA has other configuration on their dream airbus flights. Lots of stuff about all this on YouTube where you can see what I have been describing. I can not recommend taking VA on a long flight with these seats.

From the start everything was perfectly fine. First meal was fantastic. Breakfast needs a lot of work and food was overcooked and not very nice for breakfast. Staff were fantastic friendly nice they came round and check we need anything else to eat or drink

From the start everything was perfectly fine. First meal was fantastic. Breakfast needs a lot of work and food was overcooked and not very nice for breakfast. Staff for a fantastic friendly nice we came round and check we need anything else to eat or drink

My only issue was my meal was inedible except for the sides.

Old cabine without flat bed in business for a 12 hour flight is not acceptable

Did not find the wheelchair that supposed to assist and went to a long queue for transit security chk which was very slow and boarding desk wanted to close counter although that they knew that I am minutes away because of their mistake of not providing the wheelchair.

Business class in the second leg - CDG-EVN was a disaster.

Everything went smoothly with Air France. There was a delay in departure which seemed to relate to the immigration services being short staffed.

worst experience ever i choose my seat in advance and also have my seat selected in my boarding and the they told me that my seat has been changed without notify me

Food could have been better especially the breakfast. Overall it was a good flight

I have used Air France and KLM many times it will help if they change their menu's feel like it's been the same for years!!!, Especially the breakfast. Overall the flight was good and enjoyable.

No birding was given for next trip on same carrier, food was very moderate.

We transited through Chad and what was supposed to be a 1hr 20 minutes transit time lasted over 4hrs. We didn't get regular updates until we complained. After a 10hr flight from Paris no form of refreshment given and finally arrived Abuja over 6hrs later and none of my bags came

Decent service - nice seats. Crew were not overly attentive but can’t complain overall for the money

Very nice flight, easy connections in Keflavík, and friendly crew.

I will never fly this airline again. Checking in was poor , we had to go back to the check in counter at Raleigh - Durham international airport three times because they didn’t issue my boarding pass but rather duplicated my husband’s twice which caused a big headache at the passport control at the airport which triggered security alert and wouldn’t let us pass through we we had to wait for long time to be able to explain and clear everything after talking to the supervisor.. No food on the plane , not even crackers. No food was offered to buy ether . No ear phone was provided . Very little time to make from one plane to another and nobody to assist with smooth transition. Flight itself , we felt safe so thank you to the pilots . But customer service was terrible . We spent $ 2500 on 2 tickets, so I cannot say that service was consistent with the price .

Seats are way too much now with these new airplanes especially long flights like we had. I was 7 month pregnant and in a lot of discomfort due to small seats.

Food was horrible. This wasn’t business class. No leg space, can’t sleep in row position, huge delay

I liked how easy my transfers between flights in Keflavik were. I would have appreciated more food options in Keflavik.

The plane was flaming hot! Could not breathe. Everyone coughing from heat. Awful.

My biggest problem was the flight from KEF to DUB was delayed, which caused me to miss my connecting flight in DUB and we were forced into an unplanned 10-hour layover in DUB. Crew and boarding staff were all very friendly but this was a real inconvenience and especially uncomfortable for my disabled wife.

Not much! This was my first flight with Iceland air and unfortunately it wasn’t what I have expected. My luggage is lost nothing as of yet where it was left. Not a good service at all!!

The seat size was more like a domestic than an international flight. In fact, i would compare the ammenities, quality and service to a short hall ryan air flight, which was unexpected for an international flight. The plane was extremely hot so sleeping was difficult. My biggest complaint was that they are very strict on carry on luggage only allowing it to weigh 10kg/22lb. I try to limit myself to a carryon so i don't have to mess with bagage claim, but the wieght restriction made it impossible. I have never had a carry on weight restriction (at least enforced) on an international flight. Will not be including them in future searches.

- OK plane. Basic accommodations. OK food. The digital window shade wasn't working.

- OK plane. Basic accommodations. OK food. The digital window shade wasn't working. - Expect to be woken up more than an hour before landing when they start dinging the bell and making announcements and turning on all cabin lights to serve a snack. I would prefer they remain quiet and only serve people who want to wake up.

Better food and more space in the seats. Also when doing the web check in both times I was going in to your site the minute you open it and there is not really many seats to choose only to buy!!!

It was ok, not as good as it used to be. The Heathrow connection was a disaster - complete anarchy, unknowledgable and skimpy assistance and signage. Gate crew at next flight was great, held the flight while my wife struggled through security.

It was great! The seats were comfortable, and they fed me during the transatlantic flight, something which I have been missing out on for the past 3 years as I travel to and from school.

This flight was cancelled at the last minute. We were rebooked on another flight but a day later. We lost a day of our vacation and paid for a night in a hotel we couldn’t use. The flights we were rebooked on (both American) messed up our seating on both flights-we didn’t get the seats we had paid for. All in all, a terrible experience.

Lost our bags in Heathrow, We didn’t receive bags in Mallorca for 3 days, out of a 7 day cycling vacation. Really inconvenient and disappointing!

We missed the flight to Barcelona because the flight from Baltimore was delayed. We flew on Vueling VW6653. Our luggage didn’t arrive. Please help us get our luggage. We are staying at Hotel Gran Via in Barcelona

In economy and food was ok, but with limited leg space (and I was in a 2 seat configuration) it was difficult to eat with a tiny seat tray. I spilt wine on my trousers. First time on British Air (I usually fly Turkish Air) and in a 777. Heathrow was pleasant but changing terminals awkward.

Starting with the flight Cairo to London the plain was so poor no entertainment at all uncomfortable seats although it’s 5 hours long,then an American airline plain took me from London to Miami it was a bad experience the crew most of flight time not available and they asked us to help our selves for any snacks if we need. From Miami to London actually was perfect flight with a huge plain and perfect crew but from London to Cairo was horrible plain with stiff fixed seats not movable no entertainment or wi fi very poor Menu which is unacceptable for a business class

Book cheap flights from Seattle to London

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Seattle to London found on KAYAK in the last 72 hours.
9/10Wed
1 stopIcelandair
20h 30mSEA-LHR
C$ 362
1/10Tue
1 stopIcelandair
17h 25mSEA-LHR
C$ 416
12/8Mon
1 stopIcelandair
17h 25mSEA-LHR
C$ 485
9/11Sat
2 stopsWestJet
21h 25mSEA-LHR
C$ 505
9/10Wed
2 stopsWestJet
20h 40mSEA-LHR
C$ 559
2/10Wed
2 stopsLufthansa
17h 10mSEA-LHR
C$ 617
19/9Thu
2 stopsLufthansa
17h 10mSEA-LHR
C$ 685
10/10Thu
1 stopDelta
22h 40mSEA-LHR
C$ 691
5/10Sat
1 stopDelta
22h 45mSEA-LHR
C$ 698
21/6Fri
directBritish Airways
9h 20mSEA-LHR
C$ 1,169

Search by stops

Search by airline

Search by price

Last minute flights from Seattle to London

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Seattle to London that are departing in the next 10 days.
20/5Mon
multi-stopLufthansa
16h 10mSEA-LHR
11/6Tue
multi-stopLufthansa
14h 09mLHR-SEA
C$ 1,031
20/5Mon
multi-stop
20h 55mSEA-LHR
10/6Mon
multi-stop
33h 17mLHR-SEA
C$ 1,034
21/5Tue
multi-stopUnited Airlines
18h 15mSEA-LHR
4/6Tue
multi-stopUnited Airlines
15h 59mLHR-SEA
C$ 1,038
21/5Tue
directDelta
9h 20mSEA-LHR
28/5Tue
multi-stopDelta
16h 40mLHR-SEA
C$ 1,040
21/5Tue
directDelta
9h 40mSEA-LHR
31/5Fri
multi-stopDelta
13h 05mLHR-SEA
C$ 1,041
20/5Mon
multi-stopLufthansa
16h 10mSEA-LHR
13/6Thu
multi-stopLufthansa
15h 57mLHR-SEA
C$ 1,042
20/5Mon
directBritish Airways
9h 20mSEA-LHR
2/6Sun
directBritish Airways
9h 45mLHR-SEA
C$ 1,604
21/5Tue
multi-stopIcelandair
16h 30mSEA-LHR
30/5Thu
multi-stopIcelandair
12h 30mLHR-SEA
C$ 2,089
20/5Mon
multi-stopIcelandair
16h 29mSEA-LHR
29/5Wed
multi-stopIcelandair
12h 35mLHR-SEA
C$ 2,094
20/5Mon
directVirgin Atlantic
9h 20mSEA-LHR
25/5Sat
directVirgin Atlantic
10h 30mLHR-SEA
C$ 4,365

Search by stops

Search by airline

Search by price

Seattle - London Heathrow Airport Flights

Departure:

Seattle (undefined)United States

Destination:

London Heathrow Airport (LHR)United Kingdom

Return flight deals:

London Heathrow Airport - Seattle

Cabin classes:

C$ 4,394
C$ 2,084
C$ 958

Browse origins:

  • Flights » 
  • Seattle

Browse destinations:

  • Flights » 
  • Worldwide » 
  • London » 
  • London Heathrow Airport