C$ 194 Find Cheap Flights from London to the United States

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to the United States departing on 14/5. 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.
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Best United States Flight Deals from London

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Fort Lauderdale
Fort Lauderdale2 stopsC$ 382
Orlando
Orlando2 stopsC$ 373
Las Vegas
Las Vegas1 stopC$ 375
Los Angeles
Los Angeles1 stopC$ 385
New York
Newark1 stopC$ 474
Miami
Miami2 stopsC$ 482
San Francisco
San Francisco2 stopsC$ 424
Honolulu
Honolulu2 stopsC$ 666
Tampa
Tampa2 stopsC$ 363
Boston
Boston2 stopsC$ 528
Seattle
Seattle1 stopC$ 341
Nashville
Nashville1 stopC$ 523
San Diego
San Diego1 stopC$ 759
Atlanta
Atlanta1 stopC$ 629

Cheap Flight Deals from London to the United States (YXU-US0)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from London to the United States 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.

Recent round-trip flight deals from London to the United States

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from London to the United States.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
United Airlines Logo
6:15 a.m. - 10:51 a.m.YXU-SEA
7h 36m1 stop
United Airlines Logo
10:15 p.m. - 2:58 p.m.SEA-YXU
13h 43m2 stops
C$ 341United Airlines
Find Deal
Sat, 7 Jun - Sat, 14 Jun
United Airlines Logo
9:55 a.m. - 8:41 p.m.YXU-SEA
13h 46m2 stops
United Airlines Logo
10:15 p.m. - 2:58 p.m.SEA-YXU
13h 43m2 stops
C$ 348United Airlines
Find Deal
Sat, 7 Jun - Sat, 14 Jun
United Airlines Logo
9:55 a.m. - 8:47 p.m.YXU-MCO
10h 52m2 stops
United Airlines Logo
9:35 a.m. - 9:27 p.m.MCO-YXU
11h 52m2 stops
C$ 373United Airlines
Find Deal
Tue, 19 Aug - Thu, 28 Aug
United Airlines Logo
6:15 a.m. - 3:17 p.m.YXU-MCO
9h 02m2 stops
United Airlines Logo
7:15 a.m. - 9:27 p.m.MCO-YXU
14h 12m2 stops
C$ 374United Airlines
Find Deal
Sat, 28 Jun - Fri, 11 Jul
WestJet Logo
8:00 p.m. - 10:40 a.m.YXU-LAS
17h 40m1 stop
WestJet Logo
8:00 a.m. - 7:09 p.m.LAS-YXU
8h 09m1 stop
C$ 375WestJet
Find Deal
Fri, 8 Aug - Fri, 15 Aug
Air Canada Logo
6:15 a.m. - 11:23 a.m.YXU-MCO
5h 08m1 stop
Air Canada Logo
6:00 a.m. - 2:57 p.m.MCO-YXU
8h 57m2 stops
C$ 378Air Canada
Find Deal
Fri, 26 Sep - Tue, 30 Sep
Air Canada Logo
9:55 a.m. - 3:06 p.m.YXU-MCO
5h 11m1 stop
Air Canada Logo
8:15 p.m. - 9:18 a.m.MCO-YXU
13h 03m1 stop
C$ 379Air Canada
Find Deal
Wed, 21 May - Wed, 28 May
WestJet Logo
8:00 p.m. - 10:40 a.m.YXU-LAS
17h 40m1 stop
WestJet Logo
1:25 p.m. - 5:14 a.m.LAS-YXU
12h 49m2 stops
C$ 386WestJet
Find Deal
Sun, 20 Jul - Thu, 24 Jul
 Logo
6:15 a.m. - 3:17 p.m.YXU-MCO
9h 02m2 stops
 Logo
7:00 a.m. - 5:07 p.m.MCO-YXU
10h 07m1 stop
C$ 400
Find Deal
Sat, 28 Jun - Thu, 10 Jul
 Logo
6:15 a.m. - 11:27 p.m.YXU-MCO
17h 12m2 stops
 Logo
6:30 a.m. - 2:57 p.m.MCO-YXU
8h 27m1 stop
C$ 433
Find Deal
Thu, 19 Jun - Thu, 26 Jun

KAYAK's insights & trends for London to the United States flights

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

What is the cheapest time of day to fly to the United States?

The average price for all round-trip flights from London to the United States depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to the United States is generally in the evening, when round-trip flights cost C$ 418 on average. Morning departures are around 17% more expensive than evening flights, on average. The most expensive time of day to fly to the United States is generally in the morning, which is peak travel time and where the average cost of a ticket is C$ 489.

What is the cheapest month to fly from London to the United States?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London to the United States, 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 London to the United States is April, when tickets cost C$ 508 (return) on average. On the other hand, the most expensive months are May and August, when the average cost of round-trip tickets is C$ 1,016 and C$ 893 respectively.

How far in advance should I book a flight from London to the United States?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London to the United States, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.
To get a below-average price on the flight from London to the United States, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.

Good to know

Low season

June

High season

March

Cheapest flight

C$ 194
Best time to beat the crowds (7% less expensive on average)
Most popular time to fly and prices are also 11% lower on average.
Flight from London to Orlando Airport

FAQs - booking United States flights

  • How does KAYAK find such low prices on flights from London to the United States?

    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 London to the United States.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from London to the United States 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 London to the United States?

    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 from London to the United States with an airline and back with another airline.

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

    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 from London to the United States up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 4 airlines serving from London to the United States

Need help choosing which airline to fly with from London to the United States? 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.
7.4
United AirlinesOverall score based on 8685 reviews
7.7Boarding
6.6Food
7.1Entertainment
8.1Crew
7.3Comfort
Airline reviews

Plane temperature was comfortable (not to hot) when boarding and waiting for takeoff.

8.0 ExcellentAnonymous, Mar 2025YVR - DEN
Read more United Airlines reviews

Plane temperature was comfortable (not to hot) when boarding and waiting for takeoff.

Michael, our FA was very attentive, even finding me a chocolate brownie from economy class when the dessert selections were all dairy based. ( intolerant, not allergic so don’t usually need to order dairy free)

We tried to upgrade to economy premium but were told this was not possible as we had booked through United Airlines (and Air Canada was operating the flight). This seemed silly given there was ample space in economy premium. Additionally, we had to wait almost 1.5 hours upon arrival to taxi to the gate. Otherwise, the crew were very pleasant and passengers were friendly.

It was my first time with United Airlines and I would say it was very good experience and best of all the flights were on time. Will definitely fly with United Airlines next time.

headphone jack didnt work for the first flight and not much variety

Plane 3 hours late. Missed connection. No help from gate staff. App horrible. Lost connection repeatedly. No service desk. Finally got help from young girl driving cart.

Not as good as expected Air Can needs to improve totally rated on internet as worst

The flight was delayed, it took longer than anticipated because of weather, and they broke my luggage.

Everything was good. Flight was on time, luggage pickup was quick. The staff were great. Could not ask for anything more.

lots of delays the crew were unclear about where to pick up my carry-on, which they took from me to check in on the plane.

Internet on both flights was sketchy. Thus in flight entertainment was non- existent on MN - Balrimote leg.

We never had an experience they canceled the flight and they did not offer us an alternative flight. I had to book one on my own expense. They offered us food voucher and we could not use them at the airport it kept saying not attached to an existing flight. The people at the counter were rude and cold and they did not care about our situation

It took 30 minutes to check in with the Westjet rep. They didn’t have enough seats and she needed to make a call… I am always “randomly” selected to be checked at security. Their “randomly “ selection system may need some updating. They treat people like criminals. It is not appropriate behavior.

Found the seats very crowded—too close together ! And waited a long time for our luggage All staff at both ends were excellent!!!

Flight cancelled and Kayak switched our return flight to a red eye. Ridiculous.

Will never book through you again. Very disappointed in the notices and action taken or provided when planes are rescheduled, enough to cause missed connections

Lost my luggage. Filed a report and there is no response. Received a phone call from another airline that said they had the bag and they did not know what to do with it

Very good over all , would have been nice to have entertainment on the flight

Absolutely the worst airline I have ever taken. They lost my baggage and told me my bag tags had been cancelled. When my bags arrived days later I had to pick them up at 3:15 am. My return flight was delayed another 6 hours and they broke my bag. Westjet does nothing to try and make it a better customer experience and all the customers services representatives I spoke with were useless and incompetent. Never flying westjet again.

Easy self checkin and baggage drop. No in seat entertainment, but wifi and app worked well

Overall good experience. The flight from Toronto to Denver does not have entertainment - movies to watch.

Ensure prepaid food arrangements are appropriately understood by flight crew of who purchased and who did not

All was fine. Weather was a bit stormy, but nothing kayak can do about that! 😊

I paid for a comfort class seat and was seated in economy.

My plane was cancelled and had to be rebook for the evening was not happy.

The flight was cancelled and we had to rebook on Porter to make our cruise the next day. Air Canada has not compensated. We won’t be flying with them again. This is the second time this has happened. Also the return flight was delayed 2 hours who knows why.

Separated me and my wife and wife’s sister in far apart different seats even though I booked them all together. Just scams after scams to make us pay more. Worst airline

If you want your flight to get delayed constantly for 13+ hours and given a 10 dollar food voucher the. I would say take air canada. Worst experience ever.

My flight was cancelled and I was left to figure out where to find a hotel, something to eat and how to get a new flight at 11:30pm. Wasted a day. Thanks, Air Canada!

flight was delayed 6 hours for weather, then cancelled because of the crash in toronto, but none of the links to cancel or rebook my flights are working

Leg room was terrible and seats very narrow. Flight was also delayed.

The worst airline experience that I ever had in my life. The fare was cheap but boy do you pay for it when it comes to baggages, carry-ons, food on board and lack of available staff at check-in. Almost every other passenger on my flight had the same complaints and experience. We all bonded discussing our displeasure. My husband and I will definitely not be traveling with Flair Airlines. We'll take anyone else.

The most uncomfortable plane I ever fly on. The seats won't even recline a little. For a 5 hrs flight at night and tired it felt like torture

Seats in 1 res are dispersed all over the plane, even child was across

Personally, I will not use this fight again. The service is poor, you have to buy even water. They don't provide anything even sneak, you have to buy. They said Personally items for 7 kg. Then they use some measurements, if you have 7kg and if it's not getting inside of their measurements, you have to pay 80$ this is robbery. I will prefer other flight then this. I am désappointement taking this airplane.

It’s a shameful company. It ask as to go to counter to take the boarding pass, they simply send it by email, just to check the bags’ size in a smaller than normal template. DONT USE FLAIR! It will be more expensive than normal airlines at the end.

flight was okay, no wifi, no free drinks but worst of all they lost my son's bike for four days. Customer service was nonexistent - call a number that leaves you on perpetual hold, there's no baggage folks in the baggage claims area (in vancouver). we went up to international and nobody was at ticketing, went to domestic and they had us fill out a form. they could not tell us where the bag was. Anyway, highly recommend you drop an airtag for anything that's worth more than $500. My son's bike costs a lot more than that to replace; I was on pins and needles for four days.

The crew of this flight, specially the flight attendant in the front were the sweetest I’ve had in all my life, I genuinely hope they get a race or sum cuz of their efforts. It was just quite unsettling that the flight took so long to departure. It was supposed to leave at 10:35pm and we ended up taking off at 11:22pm…👎🏻👎🏻👎🏻

It’s bare bones but was on time so can’t complain.

Of all the countries I've flown to and airlines from around the world, I have never had such a dismissive an arrogant employee during boarding. After waiting in line for 20 minutes to board, I was sent to a second line for Passport verification. Natalie from Flair, repeatedly tried to scan my passport which didn't work for some reason but was too lazy to input my information manually. Bar code scanners aren't 100% reliable as we all know. She asked me my birthdate 3 times, made me wait to be the last person aboard and then smugly threatened me that my only bag could be charged for (same backpack I used as on my arrival as carry on). Natalie working in Ft. Lauderdale and the was the epitome of lobotomized tiktok brain with the charm of junk mail.

Everything you need to know for your flight from London to the United States

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