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YXU - SFO

C$ 697 Find cheap flights from London, Ontario 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 15/6. 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
Wed 19/6
Wed 26/6

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 42,596,105 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.

Recent one-way flight deals from London to San Francisco

Only flying one-way? Below are some of the best one-way flight deals from London to San Francisco found on KAYAK recently.

Recent last-minute flight deals from London to San Francisco

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from London to San Francisco.

Recent direct flight deals from London to San Francisco

The latest deals for direct flights from London to San Francisco so you can sit back and relax without the need for a layover.

Cheap bus & train deals from London to San Francisco

Find recent round-trip train or bus tickets from London to San Francisco.

All round-trip flight deals to San Francisco

The cheapest plane tickets to San Francisco found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
6:15 a.m. - 2:33 p.m.YXU-SFO
11h 18m2 stops
2:25 p.m. - 5:18 a.m.SFO-YXU
11h 53m2 stops
C$ 697WestJet
Find Deal
Sat, 15 Jun - Sat, 29 Jun
6:15 a.m. - 12:00 p.m.YXU-SFO
8h 45m1 stop
2:25 p.m. - 5:18 a.m.SFO-YXU
11h 53m2 stops
C$ 701WestJet
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Sat, 15 Jun - Sat, 29 Jun
6:00 a.m. - 10:35 a.m.YXU-SFO
7h 35m1 stop
4:35 p.m. - 9:15 a.m.SFO-YXU
13h 40m1 stop
C$ 730Air Canada
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Sat, 15 Jun - Wed, 19 Jun
9:50 a.m. - 7:00 p.m.YXU-SFO
12h 10m2 stops
4:35 p.m. - 9:15 a.m.SFO-YXU
13h 40m1 stop
C$ 738Air Canada
Find Deal
Sat, 15 Jun - Wed, 19 Jun
6:15 a.m. - 2:33 p.m.YXU-SFO
11h 18m2 stops
7:03 p.m. - 6:59 p.m.SFO-YXU
20h 56m2 stops
C$ 830WestJet
Find Deal
Sat, 15 Jun - Wed, 19 Jun
3:25 p.m. - 9:02 p.m.YXU-SFO
8h 37m1 stop
11:55 a.m. - 9:35 p.m.SFO-YXU
6h 40m1 stop
C$ 858
Find Deal
Sat, 15 Jun - Sat, 29 Jun
6:15 a.m. - 2:33 p.m.YXU-SFO
11h 18m2 stops
2:25 p.m. - 5:30 a.m.SFO-YXU
36h 05m3 stops
C$ 894
Find Deal
Sat, 15 Jun - Sat, 29 Jun
3:25 p.m. - 8:07 p.m.YXU-SFO
7h 42m1 stop
12:12 a.m. - 9:35 p.m.SFO-YXU
18h 23m2 stops
C$ 950Air Canada
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Sat, 15 Jun - Fri, 28 Jun
9:50 a.m. - 5:16 p.m.YXU-SFO
10h 26m2 stops
12:12 a.m. - 2:45 p.m.SFO-YXU
11h 33m2 stops
C$ 1,156Air Canada
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Sat, 15 Jun - Fri, 28 Jun
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$ 655Air Canada
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Fri, 24 May - Sun, 26 May
3:25 p.m. - 11:05 p.m.YXU-SFO
10h 40m2 stops
10:54 p.m. - 9:16 a.m.SFO-YXU
7h 22m1 stop
C$ 675Air Canada
Find Deal
Fri, 24 May - Sun, 26 May
8:00 p.m. - 2:34 p.m.YXU-SFO
21h 34m2 stops
3:20 p.m. - 5:30 a.m.SFO-YXU
11h 10m2 stops
C$ 1,017WestJet
Find Deal
Fri, 24 May - Sun, 26 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$ 464 on average. On the other hand, the most expensive months are December and March, where the average cost of tickets is C$ 1,239 and C$ 776 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$ 697
Best time to beat the crowds (0% less expensive on average)
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$ 512 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.

  • Which is the best airline for flights from London to San Francisco, WestJet or Air Canada?

    The two airlines most popular with KAYAK users for flights from London to San Francisco are WestJet and Air Canada. With an average price for the route of C$ 678 and an overall rating of 7.5, WestJet is the most popular choice. Air Canada is also a great choice for the route, with an average price of C$ 606 and an overall rating of 7.0.

  • 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.
7.5
WestJetOverall score based on 2895 reviews
6.5Food
6.5Entertainment
7.7Boarding
7.3Comfort
8.2Crew
Airline reviews

Too many oversized carryon baggage. If carrier reduced checked luggage fee this could be avoided. The staff were friendly and helpful, very professional.

8.0 ExcellentRoy, May 2024YQT - YWG
Read more about WestJet reviews

Too many oversized carryon baggage. If carrier reduced checked luggage fee this could be avoided. The staff were friendly and helpful, very professional.

Nice smooth flight with pleasant stewards. Slept most of the flight, they could have slowly turned on the lights to make it more pleasant. Otherwise a good trip.

Great! No food was available during the flight due to the catering service strike but snacks were given throughout the flight which was nice.

I wish that seats closer to the front of the plan were available, but when I booked the flight the seats were VERY expensive so I did not book seats at that time. The day before flying only seats at the back of the plane were available. It takes so long to board the plane and empty the plane on arrival due to SO many roller bags.

Crew was rude.didn’t even say hi or welcome to board

Good flight. No I’m seat entertainment. But my phone worked just fine on the west jet app.

Nothing special. Unacceptable wait for baggage on arriving in Calgary

Departure delay on a late night flight. Made us even later. Tired but got home.

Westjet forced me to put my carry-on baggage in check-in probably because I was assigned seat 23A (the last row seat), which had no cabin space, which is unfair. I wanted to carry on my luggage so that I don't have to wait at the airport for my luggage. Also, because there was no cabin space, I was forced to keep my laptop bag under the seat, which I didn't want to as I was carrying 2 laptops and charger. The airline should basically tell people that if you are assigned a last row seat, then you are not allowed a cabin baggage or a personal item.

Easy processing, flight time was quick and staff was professional and kind.

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 👏

Last minute flights from London to San Francisco

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 London to San Francisco that are departing in the next 10 days.
24/5Fri
multi-stopAir Canada
7h 42mYXU-SFO
26/5Sun
multi-stopAir Canada
7h 22mSFO-YXU
C$ 655
24/5Fri
multi-stopAir Canada
10h 40mYXU-SFO
26/5Sun
multi-stopAir Canada
7h 22mSFO-YXU
C$ 675
24/5Fri
multi-stopWestJet
21h 34mYXU-SFO
26/5Sun
multi-stopWestJet
11h 10mSFO-YXU
C$ 1,017

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London - San Francisco Flights

Departure:

London (undefined)Canada

Destination:

San Francisco (SFO)United States

Return flight deals:

San Francisco - London

Cabin classes: