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Cheap flights from California to London, ON from C$ 250

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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
17 May — 24 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from California to London

Enter your travel dates to find the best prices.

Cheapest flights from California to London
Explore the most affordable flight options available from California to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 April 2026.

Thu 9/76:05 p.m.
SFO
-
YXU
1 stop8h 15m
WestJet
Tue 14/76:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Deal found 16/4C$ 475
Fri 10/76:05 p.m.
SFO
-
YXU
1 stop8h 15m
WestJet
Tue 14/76:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Deal found 15/4C$ 503
Sat 6/66:05 p.m.
SFO
-
YXU
1 stop8h 15m
WestJet
Thu 11/66:10 a.m.
YXU
-
SFO
1 stop13h 30m
WestJet
Deal found 16/4C$ 546
Mon 22/63:30 p.m.
SAN
-
YXU
1 stop10h 50m
WestJet
Mon 29/66:10 a.m.
YXU
-
SAN
1 stop11h 00m
WestJet
Deal found 15/4C$ 591
Tue 22/97:00 a.m.
SAN
-
YXU
2 stops11h 40m
Air Canada
Sat 26/95:40 a.m.
YXU
-
SAN
1 stop9h 36m
Air Canada
Deal found 13/4C$ 628
Sun 3/57:00 a.m.
SAN
-
YXU
2 stops11h 38m
Air Canada
Sun 17/55:10 a.m.
YXU
-
SAN
1 stop10h 08m
Air Canada
Deal found 14/4C$ 641
Sat 9/58:05 a.m.
SFO
-
YXU
2 stops10h 33m
Air Canada
Wed 13/55:10 a.m.
YXU
-
SFO
1 stop8h 40m
Air Canada
Deal found 13/4C$ 661
Fri 29/51:15 p.m.
SAN
-
YXU
1 stop16h 38m
Air Canada
Fri 5/65:10 a.m.
YXU
-
SAN
1 stop10h 08m
Air Canada
Deal found 14/4C$ 668
Fri 29/53:30 p.m.
SAN
-
YXU
2 stops43h 20m
WestJet
Fri 5/66:10 a.m.
YXU
-
SAN
1 stop11h 00m
WestJet
Deal found 14/4C$ 678
Fri 15/57:06 a.m.
SJC
-
YXU
2 stops19h 14m
Multiple Airlines
Sat 30/55:55 p.m.
YXU
-
SJC
2 stops32h 04m
Multiple Airlines
Deal found 17/4C$ 1,044
Thu 21/52:49 p.m.
SJC
-
YXU
2 stops11h 31m
WestJet
Tue 26/56:10 a.m.
YXU
-
SJC
2 stops12h 22m
WestJet
Deal found 16/4C$ 1,167
Fri 15/56:19 p.m.
SJC
-
YXU
2 stops20h 14m
United Airlines
Sat 30/55:10 a.m.
YXU
-
SJC
2 stops20h 20m
United Airlines
Deal found 14/4C$ 1,197

Find flight deals from California to London

Keep the following information in mind while searching for California to London flight deals. Data was last updated 17 April 2026.

Round-trip from

C$ 475

One-way from

C$ 250
WestJet
  • WestJet
  • 9/7-14/7
  • 2 total stops
  • 17h 05m total
  • California to London
Search Deals
Air Canada
  • Air Canada
  • 4/8
  • 1 total stop
  • 7h 00m total
  • California to London
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from California 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 17 April 2026.
Use the filters below to find and compare flights from California to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 9/7

6:05 p.m.-5:20 a.m.

1 stop8h 15m

London

Tue 14/7

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

1 stop8h 50m

C$ 475

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 10/7

6:05 p.m.-5:20 a.m.

1 stop8h 15m

London

Tue 14/7

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

1 stop8h 50m

C$ 503

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Tue 22/9

7:00 a.m.-9:40 p.m.

2 stops11h 40m

London

Sat 26/9

5:40 a.m.-12:16 p.m.

1 stop9h 36m

C$ 628

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Mon 22/6

3:30 p.m.-1:50 p.m.

2 stops19h 20m

London

Mon 29/6

6:10 a.m.-2:10 p.m.

1 stop11h 00m

C$ 634

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sat 9/5

8:05 a.m.-9:38 p.m.

2 stops10h 33m

London

Wed 13/5

5:10 a.m.-10:50 a.m.

1 stop8h 40m

C$ 661

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Fri 29/5

1:15 p.m.-8:53 a.m.

1 stop16h 38m

London

Fri 5/6

5:10 a.m.-12:18 p.m.

1 stop10h 08m

C$ 668

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sat 9/5

10:42 p.m.-11:43 a.m.

1 stop10h 01m

London

Wed 13/5

5:10 a.m.-10:50 a.m.

1 stop8h 40m

C$ 767

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sat 6/6

6:54 p.m.-2:58 p.m.

2 stops17h 04m

London

Thu 11/6

6:10 p.m.-1:42 a.m.

2 stops10h 32m

C$ 785

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Wed 27/5

6:45 p.m.-1:50 p.m.

2 stops40h 05m

London

Wed 3/6

6:10 a.m.-4:40 p.m.

1 stop13h 30m

C$ 817

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Fri 15/5

7:06 a.m.-5:20 a.m.

2 stops19h 14m

London

Sat 30/5

5:55 p.m.-10:59 p.m.

2 stops32h 04m

C$ 1,044

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/4

Showing 1-10 of 20 resultsSorted by cheapest first
1
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Best time to book a flight from California to London

Have a flexible travel schedule? Discover the best time to fly to London from California 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 California to London
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from California 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 California?

    London (YXU) is the airport you will fly into if you book a flight from California to London. It is only a 8.6 km journey from London (YXU) to London’s city centre.

  • How long is the flight from California to London, Ontario?

    WestJet, Air Canada, and United Airlines can get you from California to London, Ontario in just under 8h 15m. Your travel time can differ by up to 11h 59m. The distance from California to London, Ontario is about 3508 km. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most popular routes from California to London, Ontario?

    The most popular route from California to London, Ontario is San Francisco - London. You may also consider San Diego - London or San Jose - London.

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

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

  • How can I find direct flights from California to London?

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

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

    Yes. Cheapflights offers flight deals from California 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
Port Stanley
Grand Bend

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Yes, we can. To see specific flights from California to London with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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