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Cheap flights from San Francisco Bay Area to London, ON from C$ 465

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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — YXU
13 Apr — 20 Apr1
1 adult

Cheap flight deals from San Francisco Bay Area to London

Keep the following information in mind while searching for San Francisco Bay Area to London flight deals. Data was last updated 8 April 2025.

Round-trip from

C$ 465

Popular in

December

Cheapest in

March

Average price

C$ 426
WestJet
  • WestJet
  • 10/6-17/6
  • 2 total stops
  • 17h 14m total
  • San Francisco Bay Area to London
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 142 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (C$ 73 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
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Find flight deals from San Francisco Bay Area to London

Cheapest flights from San Francisco Bay Area to London
Explore the most affordable flight options available from San Francisco Bay Area to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 April 2025.

Tue 10/66:05 p.m.SFO - YXU
1 stop8h 09mWestJet
Tue 17/66:00 a.m.YXU - SFO
1 stop9h 05mWestJet
Deal found 7/4C$ 465
Fri 23/58:45 p.m.SFO - YXU
2 stops15h 18mUnited Airlines
Fri 30/53:45 p.m.YXU - SFO
1 stop8h 52mUnited Airlines
Deal found 8/4C$ 530
Sun 20/49:55 a.m.SJC - YXU
2 stops30h 18mWestJet
Wed 23/48:00 p.m.YXU - SJC
2 stops45h 49mWestJet
Deal found 7/4C$ 1,314
Fri 23/512:30 p.m.SJC - YXU
2 stops17h 48mUnited Airlines
Fri 30/59:55 a.m.YXU - SJC
2 stops15h 44mUnited Airlines
Deal found 8/4C$ 1,381
Sun 20/48:34 a.m.SJC - YXU
3 stops31h 39mMultiple Airlines
Wed 23/48:00 p.m.YXU - SJC
3 stops25h 57mMultiple Airlines
Deal found 7/4C$ 1,623

Cheapflights Fare Finder

Customize your flight search to find flights from San Francisco Bay Area 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 8 April 2025.
Use the filters below to find and compare flights from San Francisco Bay Area to London that are best for you.

Fly from

San Francisco Bay Area

Fly to

London

Route

Depart

Return

Price

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 10/6

6:05 p.m.-5:14 a.m.

1 stop8h 09m

London

Tue 17/6

6:00 a.m.-12:05 p.m.

1 stop9h 05m

C$ 465

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 23/5

8:45 p.m.-3:03 p.m.

2 stops15h 18m

London

Fri 30/5

3:45 p.m.-9:37 p.m.

1 stop8h 52m

C$ 530

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Sun 20/4

9:55 a.m.-7:13 p.m.

2 stops30h 18m

London

Wed 23/4

8:00 p.m.-2:49 p.m.

2 stops45h 49m

C$ 1,314

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Fri 23/5

12:30 p.m.-9:18 a.m.

2 stops17h 48m

London

Fri 30/5

9:55 a.m.-10:39 p.m.

2 stops15h 44m

C$ 1,381

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Sun 20/4

8:34 a.m.-7:13 p.m.

3 stops31h 39m

London

Wed 23/4

8:00 p.m.-6:57 p.m.

3 stops25h 57m

C$ 1,623

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/4

Best time to book a flight from San Francisco Bay Area to London

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

Cheapflights Insights

Everything you need to know about your flight from San Francisco Bay Area to London

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

Currently, October is the cheapest month in which you can book a flight from San Francisco Bay Area to London, Ontario (average of C$ 243). Flying from San Francisco Bay Area to London, Ontario in December is currently the most expensive (average of C$ 478). 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 8 April 2025.
See what other customers who have flown with United Airlines and WestJet from San Francisco Bay Area to London have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,629 reviews
Check prices

Food

6.6

Entertainment

7.1

Boarding

7.7

Crew

8.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,629 reviews
United Airlines
7.4
Good
8,629 reviews
Check prices

Food

6.6

Entertainment

7.1

Boarding

7.7

Crew

8.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
WestJet
7.2
Good
2,799 reviews
United Airlines
7.4
Good
8,629 reviews
Check prices

Food

6.6

Entertainment

7.1

Boarding

7.7

Crew

8.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

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

  • What airport do you fly into for flights to London from San Francisco Bay Area?

    If you book a flight to London from San Francisco Bay Area, you will be flying to London, which is the city’s only airport. London (YXU) is located 8.6 km from the centre of London.

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

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

  • How can I find direct flights from San Francisco Bay Area 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 Bay Area to London.

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

    Yes. Cheapflights offers flight deals from San Francisco Bay Area 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 Bay Area to London, Ontario?

    Currently, October is the cheapest month in which you can book a flight from San Francisco Bay Area to London, Ontario (average of C$ 243). Flying from San Francisco Bay Area to London, Ontario in December is currently the most expensive (average of C$ 478). 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

Travelling to a place near San Francisco Bay Area?

Book flights to San Francisco Bay Area if you plan to visit one of these locations
Grand Bend
Port Stanley

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

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Why should you use Cheapflights to find cheap flight tickets from San Francisco Bay Area 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 Bay Area.

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

Certainly. Search results for flights to London from San Francisco Bay Area shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes! Start tracking prices for San Francisco Bay Area to London flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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