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YXU - SFO

Find cheap flights from London to San Francisco from C$ 348

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 San Francisco departing on 24/5. 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.
1 adult
0 bags
Mon 3/6
Mon 10/6

Search hundreds of travel sites at once for deals on flights to San Francisco

 
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 43,369,418 times on KAYAK, and here is why:

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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from London to San Francisco 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
3:25 p.m. - 8:07 p.m.YXU-SFO
7h 42m1 stop
4:35 p.m. - 9:15 a.m.SFO-YXU
13h 40m1 stop
C$ 679Air Canada
Find Deal
Tue, 11 Jun - Wed, 3 Jul
3:25 p.m. - 9:02 p.m.YXU-SFO
8h 37m1 stop
10:35 p.m. - 2:46 p.m.SFO-YXU
13h 11m2 stops
C$ 681Air Canada
Find Deal
Sat, 25 May - Wed, 29 May
6:00 a.m. - 4:43 p.m.YXU-SFO
13h 43m2 stops
10:54 p.m. - 9:16 a.m.SFO-YXU
7h 22m1 stop
C$ 683Air Canada
Find Deal
Sat, 25 May - Wed, 29 May
3:25 p.m. - 12:03 a.m.YXU-SFO
11h 38m2 stops
4:35 p.m. - 9:15 a.m.SFO-YXU
13h 40m1 stop
C$ 687Air Canada
Find Deal
Tue, 11 Jun - Wed, 3 Jul
6:15 a.m. - 2:34 p.m.YXU-SFO
11h 19m2 stops
2:25 p.m. - 5:18 a.m.SFO-YXU
11h 53m2 stops
C$ 727WestJet
Find Deal
Tue, 11 Jun - Wed, 3 Jul
3:25 p.m. - 8:07 p.m.YXU-SFO
7h 42m1 stop
10:54 p.m. - 9:16 a.m.SFO-YXU
7h 22m1 stop
C$ 750Air Canada
Find Deal
Fri, 24 May - Sun, 26 May
6:00 a.m. - 2:43 p.m.YXU-SFO
11h 43m2 stops
10:54 p.m. - 9:16 a.m.SFO-YXU
7h 22m1 stop
C$ 757Air Canada
Find Deal
Fri, 24 May - Sun, 26 May
6:00 a.m. - 2:43 p.m.YXU-SFO
11h 43m2 stops
7:40 p.m. - 9:16 a.m.SFO-YXU
10h 36m2 stops
C$ 885Air Canada
Find Deal
Fri, 24 May - Sun, 26 May
9:50 a.m. - 3:32 p.m.YXU-SFO
8h 42m1 stop
12:30 a.m. - 2:46 p.m.SFO-YXU
11h 16m2 stops
C$ 1,270United Airlines
Find Deal
Sat, 25 May - Tue, 28 May
9:50 a.m. - 6:57 p.m.YXU-SFO
12h 07m2 stops
12:30 a.m. - 2:46 p.m.SFO-YXU
11h 16m2 stops
C$ 1,277United Airlines
Find Deal
Sat, 25 May - Tue, 28 May

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, Ontario to San Francisco?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from London, Ontario 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, Ontario to San Francisco is April, where tickets cost C$ 467 on average. On the other hand, the most expensive months are December and March, where the average cost of tickets is C$ 1,245 and C$ 780 respectively.

How far in advance should I book a flight from London, Ontario to San Francisco?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from London, Ontario to San Francisco, 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 London, Ontario to San Francisco, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 34 days before departure.

Good to know

Low season

February

High season

July

Cheapest flight

C$ 348
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly (3% more expensive 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, Ontario to San Francisco?

    In the last 3 days, the lowest price for a flight from London, Ontario to San Francisco was C$ 254 for a one-way ticket and C$ 496 for a round-trip.

  • 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 airline 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.
7.0
Air CanadaOverall score based on 6904 reviews
6.2Food
7.2Boarding
6.8Entertainment
7.8Crew
7.0Comfort
Airline reviews

The experience was generally above average. The only downside was the absence of WiFi during my flight from Vancouver to San Francisco.

10.0 ExcellentDennis, May 2024YVR - SFO
Read more about Air Canada reviews

The experience was generally above average. The only downside was the absence of WiFi during my flight from Vancouver to San Francisco.

Once again my complaint is how close the seats are together. Also, the bathrooms were not very clean by the second half of the flight.

Excellent in flight service, perhaps the best we've ever had. Business class feels tired and needs improvement to compete with other airlines. The food looked good but tasted terrible. Check in was quick, the flight arrived early and our luggage was on our flight with us.

Terrible quality wifi and they charge a lot for it. They nickel and dime you for everything.

It took 5 hour to get a crew to D Ice the plan. We had to sit on the runway for 5 hrs. in Calgary. It snows most of the winter. No proactive plan. In addition, after 3 calls to customer service they couldn't figure out how to have my wife and myself sit together on her birthday weekend. Everybody kept passing the buck. No decision from customer service, luggage drop off or check in team. The experience was a complete mess! I don't think we'll ever fly on this airline again.

Of our SIX flights in my travel group, five were delayed, and all (except possibly one) were just company screwups. One traveler had her CARRY ON baggage put on another flight because Air Canada could not properly do "weight and Balance". Bags missing for a day. Another traveler never made it. Then, (humor here) the flagship airline of the socialist country has NOTHING FOR FREE on board. Expect to pay for pretzels, folks. How's that socialism working out for ya, aye? I might book air Canada in the future if I have a meeting that I REALLY want to MISS!

I don’t know if there were any snacks served on the 5 hour flight. I might have been napping when the attendants came around. But I usually wake up when they do.

Food offerings need to be more plentiful and beverages need to be more healthy.

First My Flight was Delayed for Over 3HRS, I missed My Older Sister's Funeral, My Car Rentals I Missed it, Had to take Uber from the Airport and then to Rentals Next Day

Nothing at all ! Everything was fantastic from start to finish 👏

Book cheap flights from London to San Francisco

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from London to San Francisco found on KAYAK in the last 72 hours.
24/5Fri
1 stopAir Canada
8h 37mYXU-SFO
C$ 348
24/5Fri
2 stopsAir Canada
11h 43mYXU-SFO
C$ 354

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London - San Francisco Flights

Departure:

London (YXU)Canada

Destination:

San Francisco (SFO)United States

Return flight deals:

San Francisco - London

Cabin classes: