London

$405+ Cheap flights from San Francisco (SFO) to London (YXU)

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 1/2. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — YXU
Nov 25 — Dec 21
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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 November 20, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

June

Cheapest in

February

Round-trip from

$610
(Trip.com)

One-way from

$405
(United Airlines)
Provider with most accurate pricing for San Francisco-London flight deals.
Provider most trusted by Cheapflights users for San Francisco-London flights.
High demand for flights, 38% potential price rise
Best time to find cheap flights, 59% potential price drop
From San Francisco to London
One-way flight from San Francisco to London

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 November 20, 2024.

This Kiwi.com deal was found by Cheapflights users on 11/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/196:00 amSFO - YXU
2 stops26h 20mMultiple Airlines
Wed 12/258:00 pmYXU - SFO
1 stop20h 05mMultiple Airlines
Deal found 11/18$857
This United Airlines deal was found by Cheapflights users on 11/20. 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.
Wed 11/2710:45 pmSFO - YXU
1 stop7h 35mUnited Airlines
Mon 12/23:25 pmYXU - SFO
2 stops25h 48mUnited Airlines
Deal found 11/20$892
This Air Canada deal was found by Cheapflights users on 11/20. 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.
Wed 11/2710:45 pmSFO - YXU
1 stop7h 35mAir Canada
Mon 12/23:25 pmYXU - SFO
1 stop9h 17mAir Canada
Deal found 11/20$914

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 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 5/2

7:30 am-7:09 pm

1 stop8h 39m

London

Sun 5/4

8:00 pm-12:05 pm

1 stop19h 05m

$610

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 12/19

6:00 am-11:20 am

2 stops26h 20m

London

Wed 12/25

8:00 pm-1:05 pm

1 stop20h 05m

$857

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 5/1

12:32 am-9:36 pm

2 stops18h 04m

London

Sun 5/4

3:25 pm-9:02 pm

1 stop8h 37m

$994

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Wed 12/18

12:59 am-2:50 pm

2 stops10h 51m

London

Wed 12/25

9:55 am-3:26 pm

1 stop8h 31m

$1,057

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 1/2

12:59 am-2:50 pm

2 stops10h 51m

$405

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 12/3

8:25 am-8:20 pm

1 stop8h 55m

$1,651

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 12/3

1:30 pm-7:12 pm

3 stops50h 42m

$1,711

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

  • Most accurate provider: When it comes to deals on San Francisco-London, Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-London, Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-London, Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Francisco-London, Ontario 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 San Francisco-London, Ontario 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 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 time of day to fly from SFO to YXU?

Find hourly flight availability from San Francisco to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 20, 2024.

One of the essential ways to save on airfare from San Francisco to London, Ontario is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 39% on airfare.

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 2.8 - 3.9 inches per month. January is typically the wettest month, when rainfall can reach 3.9 in. March is typically the driest time to visit London, Ontario when rainfall is around 2.8 in.

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 68.0 F. Travelers looking to avoid the cold should look outside of February, when temperatures are typically at their lowest (around 21.2 F).

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 November 20, 2024.
Read through reviews of airlines operating flights from San Francisco to London, such as 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.
7.4
Good
9,171 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Overall

7.4

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.

7.4
Good
9,171 reviews
7.4
Good
9,171 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Overall

7.4

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.

7.3
Good
2,811 reviews
7.4
Good
9,171 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Overall

7.4

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.

7.0
Good
8,237 reviews
7.4
Good
9,171 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Overall

7.4

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?

    WestJet, at $610, was found to be the cheapest airline from San Francisco to London, Ontario.Alternate airlines to your destination round-trip include United Airlines and Air Canada.

  • 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

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Alternative routes for San Francisco to London

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from San Francisco to London

Discover the top 2 airlines that operate flights from San Francisco to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$207Average$796FlexibilityNo cancel feeOn-time67%
WestJetCheapest$306Average$501FlexibilityNo cancel feeOn-time60%
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