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$260+ Cheap flights from London, ON (YXU) to San Francisco (SFO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — SFO
Jul 12 — Jul 191
Sun 7/12
Sun 7/19
1 adult, Economy
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Cheap flight deals from London to San Francisco

Cheapest flights from London to San Francisco
Explore the most affordable flight options available from London to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2026.

This oojo deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/86:10 am
YXU
-
SFO
1 stop8h 50m
WestJet
Tue 10/136:00 am
SFO
-
YXU
1 stop20h 20m
WestJet
Deal found 6/10$352
This WestJet deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/246:10 am
YXU
-
SFO
1 stop8h 50m
WestJet
Fri 7/316:00 am
SFO
-
YXU
1 stop7h 45m
WestJet
Deal found 6/9$359
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/83:30 pm
YXU
-
SFO
2 stops12h 29m
United Airlines
Tue 10/1310:51 pm
SFO
-
YXU
1 stop7h 29m
United Airlines
Deal found 6/9$391
This Air Canada deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/35:45 am
YXU
-
SFO
1 stop10h 30m
Air Canada
Sat 12/510:45 pm
SFO
-
YXU
1 stop7h 21m
Air Canada
Deal found 6/9$396
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/33:25 pm
YXU
-
SFO
2 stops12h 04m
United Airlines
Sat 12/510:50 pm
SFO
-
YXU
2 stops13h 16m
United Airlines
Deal found 6/8$402
This Air Canada deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/99:10 pm
YXU
-
SFO
1 stop14h 59m
Air Canada
Wed 7/295:00 am
SFO
-
YXU
2 stops9h 42m
Air Canada
Deal found 6/8$437

Find flight deals from London to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from London (YXU) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$359
(WestJet)

One-way from

$260
(United Airlines)

Popular in

September

Cheapest in

August

Average price

$593
Provider with most accurate pricing for London-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for London-San Francisco flights.
Search Deals
From London to San Francisco
Search Deals
One-way flight from London to San Francisco
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($54 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 14% potential price decrease ($67 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from London to San Francisco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2026.
Use the filters below to find and compare flights from London to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

LondonSan Francisco

YXU - SFO

YXUSFO

London

Fri 7/24

6:10 am-12:00 pm

1 stop8h 50m

San Francisco

Fri 7/31

6:00 am-4:45 pm

1 stop7h 45m

$359

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 10/8

3:30 pm-12:59 am

2 stops12h 29m

San Francisco

Tue 10/13

10:51 pm-9:20 am

1 stop7h 29m

$391

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 12/3

3:25 pm-12:29 am

2 stops12h 04m

San Francisco

Sat 12/5

10:50 pm-3:06 pm

2 stops13h 16m

$402

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 7/9

10:05 am-10:51 pm

2 stops15h 46m

San Francisco

Tue 7/28

12:50 am-2:52 pm

2 stops11h 02m

$471

LondonSan Francisco

YXU - SFO

YXUSFO

London

Sun 7/26

10:05 am-12:32 am

2 stops17h 27m

San Francisco

Sun 8/2

10:47 pm-9:17 am

1 stop7h 30m

$471

LondonSan Francisco

YXU - SFO

YXUSFO

London

Wed 7/8

3:30 pm-6:53 am

2 stops18h 23m

San Francisco

Mon 7/13

12:45 am-5:42 pm

2 stops13h 57m

$471

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 12/3

5:45 am-4:06 pm

2 stops13h 21m

San Francisco

Sat 12/5

2:15 pm-9:06 am

1 stop15h 51m

$479
Cheapest one-way

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 7/9

10:05 am-1:15 am

2 stops18h 10m

$260

LondonSan Francisco

YXU - SFO

YXUSFO

London

Sat 7/18

3:30 pm-1:15 am

2 stops12h 45m

$260

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 7/9

6:20 pm-9:09 am

1 stop17h 49m

$278

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

Compare providers for flights from London to San Francisco

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from London to San Francisco in June.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on London, Ontario-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London, Ontario-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London, Ontario-San Francisco flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London, Ontario-San Francisco flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London, Ontario-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from London to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from London with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from London to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from London, Ontario to San Francisco?

    Airlines like WestJet and United Airlines fly from London, Ontario to San Francisco in about 8h 50m. The time it takes to get you to your destination can typically vary by up to 3h 39m. The distance from London, Ontario to San Francisco is about 2180 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from London to San Francisco that include hotel bookings?

    Yes. In addition to deals on London to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from London to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to San Francisco.

  • Can I find deals for business class flights from London to San Francisco?

    Yes. Cheapflights offers flight deals from London to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
South San Francisco
Santa Cruz
Santa Clara
Fairfield
Rancho Cordova
Roseville
Cupertino
Emeryville
Newark
San Bruno
Watsonville
San Ramon
Vacaville
San Carlos
Redwood City
Daly City
Sunnyvale
Turlock
Vallejo
San Lorenzo

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