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YXU - SFO

C$ 320 Find cheap flights from London, Ontario to San Francisco

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 17/7. 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 29/6
Sat 6/7

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 42,686,544 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. - 12:00 p.m.YXU-SFO
8h 45m1 stop
C$ 320WestJet
Find Deal
Wed, 17 Jul
7:10 p.m. - 9:30 a.m.YXU-SFO
17h 20m1 stop
C$ 323Flair Airlines
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Mon, 15 Jul
6:15 a.m. - 2:33 p.m.YXU-SFO
11h 18m2 stops
C$ 327WestJet
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Tue, 16 Jul
6:00 a.m. - 10:35 a.m.YXU-SFO
7h 35m1 stop
C$ 330Air Canada
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Tue, 2 Jul
6:00 a.m. - 6:52 p.m.YXU-SFO
15h 52m2 stops
C$ 337United Airlines
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Tue, 2 Jul
8:00 p.m. - 2:33 p.m.YXU-SFO
21h 33m2 stops
C$ 348WestJet
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Mon, 15 Jul
8:00 p.m. - 5:13 p.m.YXU-SFO
24h 13m1 stop
C$ 357WestJet
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Tue, 16 Jul
6:15 a.m. - 8:34 p.m.YXU-SFO
17h 19m2 stops
C$ 376
Find Deal
Sat, 13 Jul
6:15 a.m. - 9:30 a.m.YXU-SFO
30h 15m2 stops
C$ 419
Find Deal
Sat, 29 Jun
3:20 p.m. - 9:01 p.m.YXU-SFO
8h 41m1 stop
C$ 556Air Canada
Find Deal
Sat, 29 Jun

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.

Good to know

Low season

February

High season

July

Cheapest flight

C$ 320
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$ 234 for a one-way 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$ 681 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$ 610 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 2866 reviews
8.1Crew
7.3Comfort
7.7Boarding
6.4Entertainment
6.4Food
Airline reviews

It was fine. I had a lot of trouble trying to buy a seat. The Westjet website charged me and then didn’t give me my seat. I ended up keeping the seat I was assigned and hope that the charges didn’t go through.. they didn’t. But this problem with the website (trying to purchase a seat at check in) has happened a few times before. But overall the flight was good.

6.0 GoodTimothy, May 2024YYC - LAX
Read more about WestJet reviews

It was fine. I had a lot of trouble trying to buy a seat. The Westjet website charged me and then didn’t give me my seat. I ended up keeping the seat I was assigned and hope that the charges didn’t go through.. they didn’t. But this problem with the website (trying to purchase a seat at check in) has happened a few times before. But overall the flight was good.

My wife and I had an uncomfortable experience with your WestJet ticket counter rep at the WestJet Priority Member ticket counter at YYC (Calgary) on May 15, 2024. I not knowing this individual’s exact name, however, in order to easily identify her, she was one (of only two at the time) ticket counter reps at your Priority members ticket counter check-in, upon our arrival around 12:15 p.m. She was a Caucasian woman with blonde hair, and wore spectacles, approximate age being probably somewhere in her 30’s or 40’s. Background: After arriving in to the West Jet terminal in Calgary (YYC), I asked a terminal employee where the West Jet check-in ticket counter was. He told me, “Column 16”. My wife and I continuing to walk through the terminal, we finally arrived at the Column 16 area, i.e. this woman’s ticket counter area, which we discovered later was the Priority Member ticket counter. However, I was simply going by the directions given to me by the previous employee, i.e. “Walk to column 16.” Standing in her line (my wife and I being the only people in her line at the time), I tried to get her attention, and I then gestured to her, motioning to her as if to ask her if I should then possibly leave the waiting line in order to then proceed to walk up to her ticket counter. She never really motioned me to come forward. I sort of had to figure this out on my own, as my wife and I then finally decided to walk forward to her station. From this point on, after I arrived at her ticket counter, never once did she ever look me in the eye. She was always looking at her computer screen, or down at the ground, as she and I occasionally exchanged conversation with one another in order for me to be able to acquire my boarding passes from her. Shortly after she began servicing us, she commented that her work section is for Priority members only. Fair enough. I did not realize this at the time. Wishing to be polite, I then mentioned to her that, if I should, I could then walk over to the regular West Jet check-in ticket counter in order to complete the check-in process. She remained quiet, never responding to this goodwill gesture of mine. She continued to work in order to print out my boarding passes, and then finally handed them to me, never at all the entire time looking at me. I told her, “Thank you.” Never once did she respond. My wife and I then walked away. Even my wife commented to me afterward that this woman absolutely never looked at us. I cannot say that this attendant was outright rude. However, she certainly was not at all warm, congenial, nor friendly. Additionally, … After getting on the plane, we then discovered that she had needlessly assigned us seats in the very last row of the plane, these being the seats adjacent to the restroom back wall, thus, unfortunately not at all reclinable. I think that the row number of this last row of seats was 30. [However, I am not sure.] How strangely awkward that we were assigned these uncomfortable row of seats when in fact the row immediately ahead of us, i.e. I think that was row 29, had two vacancies, which could have otherwise easily seated my wife and me. That is, my wife and I could have easily been assigned these more comfortable seats, which would be reclinable, and then row 30 could have otherwise had instead our two vacancies. After our flight departed, and the fasten seatbelt sign was turned off, my wife and I had hoped to “jump seats”, that is, to leave row 30 and instead sit in row 29 to utilize the reclinable seats. However, another couple apparently had the same idea as us. That is, these other two people, for whatever reason, decided to leave their previously assigned seats, and instead, seat themselves in row 29. Thus, my wife and I were stuck with these miserably cramped row 30 seats for the entire 3.5 hour flight. To reiterate, the WestJet rep we originally encountered, knowledgeable of the plane lay-out as it appeared on her computer screen, could have easily assigned us the more comfortable row 29 seats, instead of the non-reclinable row 30 seats.

It was very, very cold extremely uncomfortable almost unbearable I was sitting at the front of the cabin

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

Moderate size plane, not completely full, easy boarding, some rows with just 2 seats so a couple can have a row to themselves

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

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.
17/7Wed
1 stopWestJet
8h 45mYXU-SFO
C$ 320
15/7Mon
1 stopFlair Airlines
17h 20mYXU-SFO
C$ 323
16/7Tue
2 stopsWestJet
11h 18mYXU-SFO
C$ 327
2/7Tue
1 stopAir Canada
7h 35mYXU-SFO
C$ 330
2/7Tue
2 stopsUnited Airlines
15h 52mYXU-SFO
C$ 337
15/7Mon
2 stopsWestJet
21h 33mYXU-SFO
C$ 348
16/7Tue
1 stopWestJet
24h 13mYXU-SFO
C$ 357
13/7Sat
2 stops
17h 19mYXU-SFO
C$ 376
29/6Sat
2 stops
30h 15mYXU-SFO
C$ 419
29/6Sat
1 stopAir Canada
8h 41mYXU-SFO
C$ 556

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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: