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Cheap flights from San Francisco Bay Area to London, ON from C$ 455

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 21/4. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — YXU
17 Jan — 24 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from San Francisco Bay Area to London

Enter your travel dates to find the best prices.

Best flights from San Francisco Bay Area to London
Discover carefully curated flight deals from San Francisco Bay Area to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 18 December 2025.

Tue 21/48:45 a.m.SFO - YXU
1 stop9h 33mAir Canada
Sat 25/45:10 a.m.YXU - SFO
1 stop8h 35mAir Canada
Deal found 16/12C$ 455
Thu 15/11:00 p.m.SFO - YXU
1 stop14h 34mWestJet
Mon 19/18:10 p.m.YXU - SFO
1 stop19h 02mWestJet
Deal found 16/12C$ 605
Wed 4/32:36 p.m.SJC - YXU
2 stops36h 59mMultiple Airlines
Wed 18/38:10 p.m.YXU - SJC
2 stops28h 54mMultiple Airlines
Deal found 16/12C$ 898
Fri 15/59:05 a.m.SJC - YXU
2 stops17h 07mDelta
Sat 30/56:00 a.m.YXU - SJC
2 stops14h 04mDelta
Deal found 16/12C$ 931
Thu 15/11:20 p.m.SFO - YXU
2 stops16h 26mAir Canada
Mon 19/15:40 p.m.YXU - SFO
2 stops24h 55mAir Canada
Deal found 16/12C$ 723
Wed 4/38:50 a.m.SJC - YXU
3 stops20h 56mAir Canada
Wed 18/35:10 a.m.YXU - SJC
2 stops19h 06mAir Canada
Deal found 16/12C$ 1,127
Mon 19/18:40 a.m.SJC - YXU
2 stops9h 40mAir Canada
Wed 21/15:10 a.m.YXU - SJC
2 stops11h 29mAir Canada
Deal found 15/12C$ 1,145
Fri 30/14:00 p.m.SJC - YXU
2 stops22h 05mMultiple Airlines
Fri 6/25:10 a.m.YXU - SJC
2 stops18h 56mMultiple Airlines
Deal found 16/12C$ 1,558
Fri 15/56:35 p.m.SJC - YXU
2 stops19h 58mMultiple Airlines
Sat 30/56:10 p.m.YXU - SJC
3 stops22h 16mMultiple Airlines
Deal found 16/12C$ 1,675
Fri 30/18:40 a.m.SJC - YXU
3 stops21h 06mAir Canada
Fri 6/29:25 a.m.YXU - SJC
2 stops14h 41mAir Canada
Deal found 16/12C$ 1,489

Find 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 18 December 2025.

Round-trip from

C$ 455

Popular in

December

Cheapest in

March

Average price

C$ 883
Air Canada
  • Air Canada
  • 21/4-25/4
  • 2 total stops
  • 18h 08m total
  • San Francisco Bay Area to London
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 106 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease (C$ 61 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 18 December 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 21/4

8:45 a.m.-9:18 p.m.

1 stop9h 33m

London

Sat 25/4

5:10 a.m.-10:45 a.m.

1 stop8h 35m

C$ 455

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 15/1

1:00 p.m.-6:34 a.m.

1 stop14h 34m

London

Mon 19/1

8:10 p.m.-12:12 p.m.

1 stop19h 02m

C$ 605

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 15/1

1:20 p.m.-8:46 a.m.

2 stops16h 26m

London

Mon 19/1

5:40 p.m.-3:35 p.m.

2 stops24h 55m

C$ 723

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Wed 4/3

2:36 p.m.-6:35 a.m.

2 stops36h 59m

London

Wed 18/3

8:10 p.m.-10:04 p.m.

2 stops28h 54m

C$ 898

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Fri 15/5

9:05 a.m.-5:12 a.m.

2 stops17h 07m

London

Sat 30/5

6:00 a.m.-5:04 p.m.

2 stops14h 04m

C$ 931

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Wed 4/3

8:50 a.m.-8:46 a.m.

3 stops20h 56m

London

Wed 18/3

5:10 a.m.-9:16 p.m.

2 stops19h 06m

C$ 1,127

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Mon 19/1

8:40 a.m.-9:20 p.m.

2 stops9h 40m

London

Wed 21/1

5:10 a.m.-1:39 p.m.

2 stops11h 29m

C$ 1,145

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Fri 30/1

8:40 a.m.-8:46 a.m.

3 stops21h 06m

London

Fri 6/2

9:25 a.m.-9:06 p.m.

2 stops14h 41m

C$ 1,489

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Fri 30/1

4:00 p.m.-5:05 p.m.

2 stops22h 05m

London

Fri 6/2

5:10 a.m.-9:06 p.m.

2 stops18h 56m

C$ 1,558

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Fri 15/5

6:35 p.m.-5:33 p.m.

2 stops19h 58m

London

Sat 30/5

6:10 p.m.-1:26 p.m.

3 stops22h 16m

C$ 1,675

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/12

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, February is the cheapest month in which you can book a flight from San Francisco Bay Area to London, Ontario (average of C$ 175). Flying from San Francisco Bay Area to London, Ontario in August is currently the most expensive (average of C$ 278). 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.

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.

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

    For as low as C$ 455, Air Canada can have you in London, Ontario from San Francisco Bay Area in 9h 33m. The distance from San Francisco Bay Area to London, Ontario is about 3508 km. This flight may include one or multiple stops.

  • 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, February is the cheapest month in which you can book a flight from San Francisco Bay Area to London, Ontario (average of C$ 175). Flying from San Francisco Bay Area to London, Ontario in August is currently the most expensive (average of C$ 278). 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 London?

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Port Stanley
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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 Bay Area to London?

Cheapflights makes it easy to find San Francisco Bay Area to London flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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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