Find flights
When to book
Airlines
FAQs

Cheap flights from San Francisco to London, ON from C$ 445

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 13/12. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — YXU
7 Dec — 14 Dec1
1 adult

Find flights from San Francisco to London within your budget

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 637,770 searches. Data last updated 2 December 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 13/12

11:45 p.m.-2:50 p.m.

2 stops12h 05m

London

Tue 11/2

5:45 a.m.-1:56 p.m.

2 stops11h 11m

C$ 445

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 16/1

8:25 a.m.-8:20 p.m.

1 stop8h 55m

London

Thu 23/1

9:55 a.m.-3:26 p.m.

1 stop8h 31m

C$ 497

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sun 5/1

2:34 p.m.-11:20 a.m.

2 stops17h 46m

C$ 538

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sun 5/1

1:55 p.m.-7:12 p.m.

1 stop26h 17m

C$ 664

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sat 4/1

12:59 a.m.-2:50 p.m.

2 stops10h 51m

C$ 950

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/12

Cheap 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 2 December 2024.

Round-trip from

C$ 445

Popular in

June

Cheapest in

February

Average price

C$ 938
Air Canada
  • Air Canada
  • 13/12-11/2
  • 4 total stops
  • 23h 16m total
  • San Francisco to London
Search Deals
High demand for flights, 38% potential price rise
Search Deals
Best time to find cheap flights, 59% potential price drop
Search Deals
Average for round-trip flights in December 2024
Search Deals

Find flight deals from San Francisco to London

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 2 December 2024.

Fri 13/1211:45 p.m.SFO - YXU
2 stops12h 05mAir Canada
Tue 11/25:45 a.m.YXU - SFO
2 stops11h 11mAir Canada
Deal found 2/12C$ 445
Sat 7/125:00 a.m.SFO - YXU
2 stops12h 20mUnited Airlines
Mon 9/123:25 p.m.YXU - SFO
1 stop8h 34mUnited Airlines
Deal found 1/12C$ 1,169

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.

Travel insights for flights from San Francisco to London

Get recent, data-driven insights about flights from San Francisco to London including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from San Francisco to London, Ontario?

Currently, October is the cheapest month in which you can book a flight from San Francisco to London, Ontario (average of C$ 243). Flying from San Francisco to London, Ontario in March is currently the most expensive (average of C$ 521). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London, Ontario ranges from 70.0 - 100.0 mm per month. January is typically the wettest month, when rainfall can reach 100.0 mm. March is typically the driest time to visit London, Ontario when rainfall is around 70.0 mm.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London, Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 20.0 C. Travellers hoping to avoid the cold should look outside of February, when temperatures are typically at their lowest (around -6.0 C).

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated 2 December 2024.
To help decide which airline to fly from San Francisco to London, see what other customers have to say about United Airlines and Air Canada. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,141 reviews
Check prices

Comfort

7.3

Boarding

7.7

Overall

7.4

Entertainment

7.1

Crew

8.1

Food

6.7

Reviews

1 / 10

I booked on United but it was really Air Canada. It was very confusing when I went to the airport. The ride to NY was very turbulent and shaky. The ride back was better. It would be nicer with more leg room and to get rid of the tilting the seat back thing. Fine for an hour flight but any longer would have been not great. Please put subtitles on the programs so we don;t have t use headphones if we forget them.

United Airlines
7.4
Good
9,141 reviews
United Airlines
7.4
Good
9,141 reviews
Check prices

Comfort

7.3

Boarding

7.7

Overall

7.4

Entertainment

7.1

Crew

8.1

Food

6.7

Reviews

1 / 10

I booked on United but it was really Air Canada. It was very confusing when I went to the airport. The ride to NY was very turbulent and shaky. The ride back was better. It would be nicer with more leg room and to get rid of the tilting the seat back thing. Fine for an hour flight but any longer would have been not great. Please put subtitles on the programs so we don;t have t use headphones if we forget them.

WestJet
7.3
Good
2,815 reviews
United Airlines
7.4
Good
9,141 reviews
Check prices

Comfort

7.3

Boarding

7.7

Overall

7.4

Entertainment

7.1

Crew

8.1

Food

6.7

Reviews

1 / 10

I booked on United but it was really Air Canada. It was very confusing when I went to the airport. The ride to NY was very turbulent and shaky. The ride back was better. It would be nicer with more leg room and to get rid of the tilting the seat back thing. Fine for an hour flight but any longer would have been not great. Please put subtitles on the programs so we don;t have t use headphones if we forget them.

Air Canada
7.0
Good
8,296 reviews
United Airlines
7.4
Good
9,141 reviews
Check prices

Comfort

7.3

Boarding

7.7

Overall

7.4

Entertainment

7.1

Crew

8.1

Food

6.7

Reviews

1 / 10

I booked on United but it was really Air Canada. It was very confusing when I went to the airport. The ride to NY was very turbulent and shaky. The ride back was better. It would be nicer with more leg room and to get rid of the tilting the seat back thing. Fine for an hour flight but any longer would have been not great. Please put subtitles on the programs so we don;t have t use headphones if we forget them.

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.

  • What are the cheapest airlines flying from San Francisco to London, Ontario round-trip?

    Flying on Air Canada is currently your cheapest option to London, Ontario, with prices starting at C$ 445. Another option worth looking into is United Airlines, starting at C$ 497 round trip. Air Canada is priced at 36% lower than the current average price of a flight leaving 3 months from now.

  • 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.

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

    Currently, October is the cheapest month in which you can book a flight from San Francisco to London, Ontario (average of C$ 243). Flying from San Francisco to London, Ontario in March is currently the most expensive (average of C$ 521). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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
Ontario to Pearson Intl flights
San Jose to Pearson Intl flights
San Diego to Pearson Intl flights
Oakland to Pearson Intl flights
Los Angeles to Toronto Island flights
San Francisco to Toronto Island flights
Ontario to Pierre Elliott Trudeau Intl flights
Las Vegas to Pierre Elliott Trudeau Intl flights
Las Vegas to Pearson Intl flights
Sacramento to Pearson Intl flights
Santa Ana to Pearson Intl flights
Burbank to Pearson Intl flights
San Francisco to Ottawa flights
Los Angeles to Ottawa flights
San Diego to Pierre Elliott Trudeau Intl flights
San Jose to Pierre Elliott Trudeau Intl flights
Santa Ana to Pierre Elliott Trudeau Intl flights
Palm Springs to Pearson Intl flights
Fresno to Pearson Intl flights
San Jose to Ottawa flights
San Diego to Ottawa flights
Sacramento to Pierre Elliott Trudeau Intl flights
Las Vegas to Ottawa flights
Reno to Pearson Intl flights
Burbank to Pierre Elliott Trudeau Intl flights
Oakland to Pierre Elliott Trudeau Intl flights
Medford to Pearson Intl flights
Medford to Pierre Elliott Trudeau Intl flights
Long Beach to Pierre Elliott Trudeau Intl flights
Los Angeles to Region of Waterloo Intl flights
Tijuana to Pearson Intl flights
Fresno to Pierre Elliott Trudeau Intl flights
Monterey to Pearson Intl flights
Los Angeles to Hamilton flights
Sacramento to Ottawa 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.
View all available airlines