YXU - SFO

C$ 461 Find cheap flights from London to San Francisco

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to San Francisco departing on 19/3. 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

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to San Francisco, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to San Francisco, as well as popular online travel agencies
In the last 7 days, travellers have searched 46,646,933 times on KAYAK, and here is why:

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Cheap flight deals from London to San Francisco (YXU-SFO)

 
These are the cheapest deals for flights from London to San Francisco currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. 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 San Francisco

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from London to San Francisco.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
3:25 p.m. - 9:42 p.m.YXU-SFO
9h 17m1 stop
10:45 p.m. - 9:15 a.m.SFO-YXU
7h 30m1 stop
C$ 461
Find Deal
Wed, 19 Mar - Mon, 24 Mar
5:45 a.m. - 10:52 a.m.YXU-SFO
8h 07m1 stop
10:36 p.m. - 2:50 p.m.SFO-YXU
13h 14m2 stops
C$ 475United Airlines
Find Deal
Wed, 19 Mar - Mon, 24 Mar
3:25 p.m. - 12:30 a.m.YXU-SFO
12h 05m2 stops
10:36 p.m. - 2:50 p.m.SFO-YXU
13h 14m2 stops
C$ 484United Airlines
Find Deal
Wed, 19 Mar - Mon, 24 Mar
9:55 a.m. - 12:56 a.m.YXU-SFO
18h 01m2 stops
8:25 a.m. - 8:20 p.m.SFO-YXU
8h 55m1 stop
C$ 899United Airlines
Find Deal
Sat, 4 Jan - Sat, 11 Jan
9:55 a.m. - 3:26 p.m.YXU-SFO
8h 31m1 stop
8:25 a.m. - 8:20 p.m.SFO-YXU
8h 55m1 stop
C$ 1,898United Airlines
Find Deal
Sat, 4 Jan - Sat, 11 Jan

Flights from London to San Francisco - Travel Insights & Trends

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

What is the cheapest month to fly from London to San Francisco?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from London to San Francisco, 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 San Francisco is April, where tickets cost C$ 440 on average. On the other hand, the most expensive months are December and March, where the average cost of tickets is C$ 1,068 and C$ 797 respectively.

Good to know

Low season

October

High season

July

Cheapest flight

C$ 461
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from London to San Francisco

When to book flights from London to San Francisco

Are your dates flexible? Find out the best times to travel from London to San Francisco 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 flights from London to San Francisco

  • What is the cheapest flight from London to San Francisco?

    In the last 3 days, the lowest price for a flight from London to San Francisco was C$ 330 for a round-trip ticket.

  • Which airports will I be using when flying from London to San Francisco?

    London airport is called London and the only airport in San Francisco is San Francisco.

  • Which aircraft models fly most regularly from London to San Francisco?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from London to San Francisco?

    Star Alliance is the only airline alliance operating flights between London and San Francisco.

  • How does KAYAK find such low prices on flights from London to San Francisco?

    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 San Francisco.

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

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

  • What is the Hacker Fare option on flights from London to San Francisco?

    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 San Francisco with an airline and back to London with another airline.

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

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

See more FAQs

Top airlines flying from London to San Francisco

 
See real verified KAYAK customer reviews for airlines flying from London to San Francisco. 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 London to San Francisco? 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.
7.3
WestJetOverall score based on 2811 reviews
7.4Boarding
7.9Crew
7.1Comfort
6.2Food
6.2Entertainment
Airline reviews

Traveling on two legs the food was identical and not very good

6.0 GoodBob, Nov 2024YYC - PSP
Read more WestJet reviews

Traveling on two legs the food was identical and not very good

The flight was on time and shorter time arrival than planned. I was an ultra basic passenger and understood one personal item on the plane. The announcements of one personal item and zone 9 boarding certainly felt like we were separated from the rest. Actually zone 9 passengers should be boarded second; we are not blocking aisles and can be seated much faster and deboarded faster too.

Still sitting in a hotel when I'm due for work

Delays happen but communication and care were very low on what ended up being a long day.

Terrible experience at the gate. Charged for carry on luggage despite them meeting the requirements for sizing.

Never been on a long haul flight that didn't have on flight entertainment. I hope the way back is better !

Seat barely reclined. Boarding took forever. Flight attendants were not very friendly

Very easy boarding. The on board snacks were not good.

They canceled the flight with no reason given they should not be in business

We had a 44 minute layover ( ??? ) to change planes for our flight to SRQ. We landed at Concourse D, and the SRQ plane was located at Concourse B, as we were told in Toronto. We got to "B4" as directed by ( Delta Help ), in less than 10 minutes, only to see the flight we booked to leave at 2:28, was showing "DEPARTED". Back to Delta Help, got an extremely obnoxious and rude clerk who gave use two options, next flight leaving 5:20, on "B12", (STANDBY). or (CONFIRMED), leaving around 8:PM, not sure of the exact time because they took our seat request and gave us another boarding pass minus the exact time. We had been waiting hours for the 5:20 flight and at the very last minute a group appeared and were allowed to board. When the "standby" folks were summoned, several were allowed to board ahead of us, even though we were there much earlier. The clerk, who gave his name as Markus, a black man with a beard, was the most arrogant. rude and condescending individual in existence. When I asked him to repeat his name he said "what did it sound like?". Had I been thinking I would have answered to me it sounded like (markasshole) which is exactly what he was. When we originally got to that gate and asked for advice, he went on and on telling me he could only comment on the flight that was in progress, that ATL was a big airport, and treated us, both, in our 80"s like we were children unable to understand the process, and directly in my face in a loud voice, shouted exactly what we were already aware of. Not one ounce of consideration for our problem, of just trying to get home. When he called out the names of the remaining "standby" people, he left several go before us, even though we were there waiting hours earlier. He called out our names, John and Nubia, looked at us and shouted out that he only had ONE, and with a grin on his face, let another standby board, and told that person that she got the "lucky" last seat, still grinning, meaning we had to wait once again for the later flight. This obviously prejudiced and biased poor excuse of human beings needs to find a job he is better suited for, perhaps dog catcher or janitor, IMHO. This entire fiasco put us home more than 7 hours later than previously indicated on our original and paid for flight schedule. If Kayak continues to offer flights with different concourse locations and with only a 44 minute layover, they might also consider a more reasonable and reliable time frame for layover. It was a horrible experience and considering alternatives to this service is paramount.

The TSA people or whatever you call them were a bit rude- I asked why I had to take my shoes off bc I'm 75 and in the USA, I don't have to. The man didn't need to snap at me. It wasn't even busy! The plane was ok, a bit small for such a long flight, but I'm very familiar with the 737 used ( I fly it often between SFO and SAN) service was ok-nothing special. If I drank alcohol I guess I would be happy with free choices. the plane was HOT and even the FA commented on it. They tried to get it cooler, but it never happened.

Multiple change of the gates at Pearson, delayed flight was extremely uncomfortable.

Easy boarding, punctuality, decent service. I can only complain about the measly snack.

Never made this leg of the flight since we rebooked through United instead. Did not make it to immigration/US custom due to the delay. Had to spend the night on our own dime in Toronto

Booked flight was cancelled. Was rebooked but sat in airport for several hours for new departure.

YYZ air Canada security messed up which led to my kids missing their flight and having to go on a separate flight later in the day without the rest of the family. Customer service was horrible and have no sense of urgency or compassion for their customers. They refuse to compensate for their errors and making my kids wait hours in the airport. This isn’t the first time we have had issues with this airline and I won’t be flying with them again.

United did not permit online check-in from home as document scans were not getting uploaded. This should be fixed their app

Cancelled flight had to fight for a hotel voucher and lost my upgrade. Not great business.

dont advertise liquor drinks you don't have. begin flight on time. instead of an hour LATE. OVERHEAD BINS ARE TOO SMALL TO FIT STANDARD CARRY ONS

Flying Air Canada was pleasant and enjoyable. The United portion was lacking.

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