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SFO - YXU

$261 Find cheap flights from San Francisco to London, Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to London departing on 7/15. 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 6/19
Wed 6/26

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 42,596,105 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
10:05 pm - 9:16 amSFO-YXU
8h 11m1 stop
3:25 pm - 9:02 pmYXU-SFO
8h 37m1 stop
$622Air Canada
Find Deal
Mon, Jun 3 - Fri, Jun 7
10:30 pm - 2:46 pmSFO-YXU
13h 16m2 stops
3:25 pm - 8:07 pmYXU-SFO
7h 42m1 stop
$627Air Canada
Find Deal
Mon, Jun 3 - Fri, Jun 7
10:30 pm - 2:46 pmSFO-YXU
13h 16m2 stops
3:25 pm - 12:01 amYXU-SFO
11h 36m2 stops
$642Air Canada
Find Deal
Mon, Jun 3 - Fri, Jun 7
12:37 pm - 5:30 amSFO-YXU
13h 53m2 stops
6:15 am - 12:00 pmYXU-SFO
8h 45m1 stop
$773WestJet
Find Deal
Fri, Jun 7 - Mon, Jun 17
12:37 pm - 5:30 amSFO-YXU
13h 53m2 stops
8:00 pm - 2:33 pmYXU-SFO
21h 33m2 stops
$805WestJet
Find Deal
Fri, Jun 7 - Mon, Jun 17
10:05 pm - 9:16 amSFO-YXU
8h 11m1 stop
3:25 pm - 9:02 pmYXU-SFO
8h 37m1 stop
$808Air Canada
Find Deal
Fri, Jun 7 - Mon, Jun 17
3:20 pm - 5:18 amSFO-YXU
10h 58m2 stops
8:00 pm - 12:00 pmYXU-SFO
19h 00m1 stop
$901WestJet
Find Deal
Mon, Jun 17 - Mon, Jun 24
1:10 am - 2:46 pmSFO-YXU
10h 36m2 stops
6:00 am - 10:35 amYXU-SFO
7h 35m1 stop
$1,022Air Canada
Find Deal
Thu, Jun 6 - Mon, Jun 17
1:10 am - 2:46 pmSFO-YXU
10h 36m2 stops
3:25 pm - 11:00 pmYXU-SFO
10h 35m2 stops
$1,131Air Canada
Find Deal
Thu, Jun 6 - Mon, Jun 17
3:20 pm - 5:18 amSFO-YXU
34h 58m2 stops
$261WestJet
Find Deal
Mon, Jul 15
3:20 pm - 5:18 amSFO-YXU
34h 58m3 stops
$311WestJet
Find Deal
Mon, Jul 15
6:05 pm - 5:18 amSFO-YXU
8h 13m1 stop
$528WestJet
Find Deal
Mon, Jul 15
12:12 am - 2:45 pmSFO-YXU
11h 33m2 stops
Sun, Jul 14

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 Saturday 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

$261
Best time to beat the crowds with an average 65% drop in price.
Most popular time to fly with an average 47% 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 $261 for a one-way ticket and $622 for a round-trip.

  • 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 6950 reviews
7.0Comfort
7.2Boarding
7.8Crew
6.8Entertainment
6.2Food
Airline reviews

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.

8.0 ExcellentMarcilio, May 2024AUS - YYZ
Read more about Air Canada reviews

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.

My second flight ended up being through United and it was fine. Again, just frustrating that it was so late.

First time flying Air Canada and the trip was very pleasant! They did a great job getting us out of Toronto and into Rome (early!) For an international flight it was very enjoyable.

You do not have a space for flight cancelled. BUT!!! Air Canada handled it great. Was booked on another airline for the next day. The original flight was booked solid. But he precheck by the maintenance found a mechanical problem and the plane was not safe to fly. It was an inconvenience to have to wait until next day but I would rather arrive safely.

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

Book cheap flights from San Francisco to London

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from San Francisco to London found on KAYAK in the last 72 hours.
7/15Mon
2 stopsWestJet
34h 58mSFO-YXU
$261
7/15Mon
3 stopsWestJet
34h 58mSFO-YXU
$311
7/15Mon
1 stopWestJet
8h 13mSFO-YXU
$528
7/14Sun
2 stops
11h 33mSFO-YXU
$642

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San Francisco - London Flights

Departure:

San Francisco (undefined)United States

Destination:

London (YXU)Canada

Return flight deals:

London - San Francisco

Cabin classes: