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SFO - YXU

$545 Find cheap flights from San Francisco to London, Ontario

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to London departing on 7/8. 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
sáb 6/29
sáb 7/6

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to London, 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 San Francisco to London, as well as popular online travel agencies
In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

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

 
These are the cheapest deals for flights from San Francisco to London 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 San Francisco to London

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from San Francisco to London.

Recent one-way flight deals from San Francisco to London

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

Recent last minute flight deals from San Francisco to London

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

Recent direct flight deals from San Francisco to London

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

Cheap bus & train deals from San Francisco to London

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

All round-trip flight deals to London

The cheapest plane tickets to London found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
2:25 pm - 5:18 amSFO-YXU
11h 53m2 stops
8:00 pm - 2:33 pmYXU-SFO
21h 33m2 stops
$545WestJet
Find Deal
seg, jul 8 - sex, jul 12
10:05 pm - 9:15 amSFO-YXU
8h 10m1 stop
6:20 pm - 11:21 pmYXU-SFO
8h 01m1 stop
$558Air Canada
Find Deal
seg, jul 8 - sex, jul 12
6:05 pm - 5:18 amSFO-YXU
8h 13m1 stop
6:15 am - 12:00 pmYXU-SFO
8h 45m1 stop
$565WestJet
Find Deal
dom, jul 14 - sáb, jul 20
6:05 pm - 5:18 amSFO-YXU
8h 13m1 stop
6:15 am - 2:33 pmYXU-SFO
11h 18m2 stops
$572WestJet
Find Deal
dom, jul 14 - sáb, jul 20
2:25 pm - 5:18 amSFO-YXU
11h 53m2 stops
6:15 am - 2:33 pmYXU-SFO
11h 18m2 stops
$578WestJet
Find Deal
dom, jul 14 - sáb, jul 20
6:05 pm - 5:18 amSFO-YXU
8h 13m1 stop
8:00 pm - 2:33 pmYXU-SFO
21h 33m2 stops
$590WestJet
Find Deal
seg, jul 8 - sex, jul 12
7:30 am - 5:30 amSFO-YXU
19h 00m1 stop
6:15 am - 9:20 pmYXU-SFO
18h 05m1 stop
$829WestJet
Find Deal
sex, jun 7 - seg, jun 17
4:35 pm - 9:15 amSFO-YXU
13h 40m1 stop
6:00 am - 10:35 amYXU-SFO
7h 35m1 stop
$831Air Canada
Find Deal
qua, jun 19 - dom, jun 23
12:30 am - 2:46 pmSFO-YXU
11h 16m2 stops
3:25 pm - 9:02 pmYXU-SFO
8h 37m1 stop
$1,239United Airlines
Find Deal
qui, jun 6 - seg, jun 17
12:30 am - 2:46 pmSFO-YXU
11h 16m2 stops
3:25 pm - 12:03 amYXU-SFO
11h 38m2 stops
$1,254United Airlines
Find Deal
qui, jun 6 - seg, jun 17

Flights from San Francisco to London - Travel Insights & Trends

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

What’s the cheapest day of the week to fly from San Francisco to London?

The average price of all flights from San Francisco to London, Ontario clicked on KAYAK for each day over the last 12 months.
For San Francisco to London, Monday is the cheapest day to fly on average and Tuesday is the most expensive. Flying from London back to San Francisco, the best deals are generally found on Saturday, with Friday being the most expensive.

Good to know

Low season

February

High season

June

Cheapest flight

$545
Best time to beat the crowds with an average 66% drop in price.
Most popular time to fly with an average 43% increase in price.
Flight from San Francisco to London

When to book flights from San Francisco to London

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

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

    In the last 3 days, the lowest price for a flight from San Francisco to London, Ontario was $545 for a round-trip ticket.

  • Do I need a passport to fly between San Francisco and London?

    Yes, you'll most likely have to show a valid passport before boarding the plane in San Francisco and on arrival in London.

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

    On your way to London, you’ll fly out from San Francisco. You’ll be landing at London.

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

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

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

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

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

    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 San Francisco to London.

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

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

    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 London with an airline and back to San Francisco with another airline. Booking your flights between San Francisco and YXU can sometimes prove cheaper using this method.

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

    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 London from San Francisco 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 San Francisco to London

 
See real verified KAYAK customer reviews for airlines flying from San Francisco to London. 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 San Francisco to London? 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 7004 reviews
7.2Boarding
7.0Comfort
7.8Crew
6.2Food
6.8Entertainment
Airline reviews

Unable to initiate refund/reschedule the ticket #worst experience #lost 900$

2.0 MediocreAnonymous, May 2024DFW - YYZ
Read more about Air Canada reviews

Unable to initiate refund/reschedule the ticket #worst experience #lost 900$

Flight was delayed for almost 3 hours. Communication of gate change was poor. Email and screen said one gate and it was a different gate from that. Gate changed first to 64 B and then to 64 C. Originally it was 68B. 64C was not communicated properly!

This was a red eye return, so I doubt there would be anyway to make it better. Other than adding beds.

Direct nonstop flight was great. Flight was delayed and the crew announced a 2h delay on the sound system. 30 min or so later I hear my name on the sound system for immediate board. Several other passangers were late too. Reason: The crew incorrectly announced a 2h delay when in reality they meant a new boarding time at 2pm.

Flight was on time early arrival better entertainment good staff.everything was excellent

I don’t think there was entertainment? No mention of it. It was a good flight. Only complaint was my seat cushion was not attached and kept slipping.

Very good other than we have to wait for one crew and we’re delayed and the pilot and his co- pilot has to make a difference to be right on time arrival. Disappointed about no food service also.

Due to a strike taking place with the airline, it negatively impacted my flight in multiple ways. My flight was delayed over 2 hours and the food served was mediocre at best.

Cabin crew were great. Seats are criminal for tall people

The fact that I got to Toronto alive and well and safe is a huge plus. I thank the captain and crew for a safe flight The comfort of the aircraft leaves much to be desired. Human beings should not have to be that cramped and squashed on a flight that we pay a lot for and even have to pay for lousy food choices The cabin crew were pleasant and helpful Kudos to them as the flight was packed to capacity and there was a lot of work for them in a short space of time All in all a good experience, but too cramped

San Francisco - London Flights

Departure:

San Francisco (SFO)United States

Destination:

London (YXU)Canada

Return flight deals:

London - San Francisco

Cabin classes: