Find flights
When to book
FAQs

Cheap flights from San Francisco to London, ON from C$ 466

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/10. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — YXU
24 Aug — 31 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from San Francisco to London

Enter your travel dates to find the best prices.

Cheapest flights from San Francisco to London
Explore the most affordable flight options available from San Francisco to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 July 2026.

Wed 14/106:05 p.m.
SFO
-
YXU
1 stop8h 15m
WestJet
Sat 17/106:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Deal found 24/7C$ 466
Wed 19/86:00 a.m.
SFO
-
YXU
1 stop7h 45m
WestJet
Wed 26/86:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Deal found 19/7C$ 528
Wed 23/96:05 p.m.
SFO
-
YXU
1 stop8h 15m
WestJet
Sat 26/96:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Deal found 21/7C$ 549
Thu 27/811:00 a.m.
SFO
-
YXU
2 stops15h 20m
Multiple Airlines
Mon 31/86:10 a.m.
YXU
-
SFO
1 stop8h 50m
Multiple Airlines
Deal found 23/7C$ 559
Wed 23/94:30 p.m.
SFO
-
YXU
2 stops13h 50m
Air Canada
Sat 26/910:05 a.m.
YXU
-
SFO
1 stop8h 19m
Air Canada
Deal found 22/7C$ 579
Sun 16/86:00 a.m.
SFO
-
YXU
1 stop7h 45m
WestJet
Mon 31/85:55 p.m.
YXU
-
SFO
1 stop25h 45m
WestJet
Deal found 20/7C$ 641
Fri 28/86:05 p.m.
SFO
-
YXU
1 stop8h 15m
WestJet
Mon 31/86:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Deal found 23/7C$ 656
Thu 10/96:00 a.m.
SFO
-
YXU
1 stop20h 20m
WestJet
Thu 17/96:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Deal found 20/7C$ 670
Thu 3/91:00 p.m.
SFO
-
YXU
1 stop13h 20m
WestJet
Thu 10/96:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Deal found 19/7C$ 676

Find flight deals from San Francisco to London

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to London (YXU). 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 25 July 2026.

Round-trip from

C$ 466
WestJet
  • WestJet
  • 14/10-17/10
  • 2 total stops
  • 17h 05m total
  • San Francisco to London
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco to London 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 629,999 searches. Data last updated 25 July 2026.
Use the filters below to find and compare flights from San Francisco to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Wed 23/9

4:30 p.m.-9:20 a.m.

2 stops13h 50m

London

Sat 26/9

10:05 a.m.-3:24 p.m.

1 stop8h 19m

C$ 579

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Wed 19/8

6:00 a.m.-1:50 p.m.

2 stops52h 50m

London

Wed 26/8

6:10 a.m.-12:00 p.m.

1 stop8h 50m

C$ 617

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 10/9

6:00 a.m.-5:20 a.m.

1 stop20h 20m

London

Thu 17/9

6:10 a.m.-12:00 p.m.

1 stop8h 50m

C$ 670

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 3/9

1:00 p.m.-5:20 a.m.

1 stop13h 20m

London

Thu 10/9

6:10 a.m.-12:00 p.m.

1 stop8h 50m

C$ 676

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Wed 26/8

12:35 a.m.-2:50 p.m.

2 stops11h 15m

London

Mon 31/8

10:05 a.m.-8:51 p.m.

2 stops13h 46m

C$ 697

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 28/8

10:35 p.m.-9:40 p.m.

2 stops20h 05m

London

Mon 31/8

3:30 p.m.-12:50 a.m.

2 stops12h 20m

C$ 707

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 28/8

8:53 p.m.-4:45 p.m.

2 stops16h 52m

London

Mon 31/8

6:10 a.m.-12:00 p.m.

1 stop8h 50m

C$ 727

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Wed 19/8

6:30 p.m.-2:50 p.m.

2 stops17h 20m

London

Wed 26/8

10:05 a.m.-7:12 p.m.

2 stops12h 07m

C$ 752
Quickest round-trip

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sun 16/8

5:00 a.m.-5:42 p.m.

2 stops9h 42m

London

Mon 31/8

10:05 a.m.-6:49 p.m.

2 stops11h 44m

C$ 944

Flights are sorted by cheapest round-trip flights first.

Deals found on 22/7

Sorted by cheapest first

Best time to book a flight from San Francisco to London

Have a flexible travel schedule? Discover the best time to fly to London from San Francisco 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 San Francisco to London. 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 San Francisco to London, Ontario?

    Air Canada and WestJet can get you from San Francisco to London, Ontario in just under 13h 50m. Your travel time can differ by up to 39h. San Francisco and London, Ontario are separated by a distance of 3508 km. This flight may include one or multiple stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Francisco to London 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

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Grand Bend
Port Stanley

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Francisco to London

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Pearson Intl flights
San Francisco to Pearson Intl flights
Los Angeles to Pierre Elliott Trudeau Intl flights
San Francisco to Pierre Elliott Trudeau Intl flights
San Diego to Pearson Intl flights
Ontario to Pearson Intl flights
Los Angeles to Toronto Island flights
Ontario to Pierre Elliott Trudeau Intl flights
Las Vegas to Pearson Intl flights
San Francisco to Toronto Island flights
Sacramento to Pearson Intl flights
San Jose to Pearson Intl flights
San Diego to Pierre Elliott Trudeau Intl flights
Santa Ana to Pearson Intl flights
Los Angeles to Region of Waterloo Intl flights
Las Vegas to Pierre Elliott Trudeau Intl flights
Oakland to Pearson Intl flights
Los Angeles to Ottawa flights
Palm Springs to Pearson Intl flights
Sacramento to Pierre Elliott Trudeau Intl flights
Santa Ana to Pierre Elliott Trudeau Intl flights
San Jose to Pierre Elliott Trudeau Intl flights
Burbank to Pearson Intl flights
San Francisco to Hamilton flights
San Diego to Ottawa flights
Los Angeles to Hamilton flights
San Francisco to Ottawa flights
Burbank to Pierre Elliott Trudeau Intl flights
Oakland to Pierre Elliott Trudeau Intl flights
Fresno to Pearson Intl flights
Santa Ana to Ottawa flights
Las Vegas to Region of Waterloo Intl flights
Long Beach to Pierre Elliott Trudeau Intl flights
Burbank to Ottawa flights
San Jose to Ottawa flights
Tijuana to Pearson Intl flights
Sacramento to Ottawa flights
Medford to Pearson Intl flights
Santa Barbara to Pearson Intl flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from San Francisco to London?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to London from San Francisco today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from San Francisco to London?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to London from San Francisco.

Can Cheapflights find flights from San Francisco to London with no change fees?

Need flexible booking options for your flight to London from San Francisco? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from San Francisco to London become cheaper?

Of course! You can now track prices for flights from San Francisco to London and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.