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Cheap flights from California to London, ON from C$ 261

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 23/7. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
16 Jul — 23 Jul1
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 16 June 2026.

Sun 2/86:05 p.m.
SFO
-
YXU
1 stop8h 15m
WestJet
Sat 8/86:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Deal found 14/6C$ 577
Fri 18/93:30 p.m.
SAN
-
YXU
1 stop10h 50m
WestJet
Tue 22/96:10 a.m.
YXU
-
SAN
1 stop11h 00m
WestJet
Deal found 15/6C$ 605
Fri 21/86:00 a.m.
SFO
-
YXU
1 stop7h 45m
WestJet
Thu 27/86:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Deal found 12/6C$ 629
Tue 15/911:35 a.m.
SFO
-
YXU
1 stop7h 05m
Air Canada
Wed 16/95:40 a.m.
YXU
-
SFO
1 stop7h 59m
Air Canada
Deal found 11/6C$ 653
Sun 2/86:05 p.m.
SFO
-
YXU
1 stop8h 15m
Delta
Sat 8/86:10 a.m.
YXU
-
SFO
1 stop8h 50m
Delta
Deal found 16/6C$ 683
Mon 21/97:35 p.m.
SFO
-
YXU
2 stops19h 08m
Air Canada
Thu 24/93:30 p.m.
YXU
-
SFO
1 stop8h 29m
Air Canada
Deal found 15/6C$ 686
Wed 9/93:30 p.m.
SAN
-
YXU
1 stop10h 50m
WestJet
Sat 12/96:10 a.m.
YXU
-
SAN
1 stop11h 00m
WestJet
Deal found 11/6C$ 686
Sun 2/810:47 p.m.
SFO
-
YXU
1 stop7h 30m
United Airlines
Sat 8/85:40 a.m.
YXU
-
SFO
2 stops14h 55m
United Airlines
Deal found 13/6C$ 839
Wed 29/75:00 a.m.
SFO
-
YXU
2 stops12h 32m
United Airlines
Wed 5/85:40 a.m.
YXU
-
SFO
2 stops11h 29m
United Airlines
Deal found 14/6C$ 853
Thu 23/73:30 p.m.
SAN
-
YXU
1 stop10h 50m
WestJet
Sun 26/75:55 p.m.
YXU
-
SAN
1 stop23h 15m
WestJet
Deal found 14/6C$ 865
Wed 9/910:30 p.m.
SAN
-
YXU
2 stops16h 13m
United Airlines
Sat 12/95:40 a.m.
YXU
-
SAN
1 stop9h 36m
United Airlines
Deal found 14/6C$ 874
Fri 18/93:04 p.m.
SAN
-
YXU
3 stops23h 39m
United Airlines
Tue 22/95:40 a.m.
YXU
-
SAN
1 stop9h 36m
United Airlines
Deal found 15/6C$ 881

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 16 June 2026.

Round-trip from

C$ 577

One-way from

C$ 261

Popular in

November

Cheapest in

January

Average price

C$ 1,198
WestJet
  • WestJet
  • 2/8-8/8
  • 2 total stops
  • 17h 05m total
  • California to London
Search Deals
WestJet
  • WestJet
  • 23/7
  • 1 total stop
  • 8h 15m total
  • California to London
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 202 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (C$ 91 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
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 16 June 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

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Fri 18/9

3:30 p.m.-5:20 a.m.

1 stop10h 50m

London

Tue 22/9

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

1 stop11h 00m

C$ 605

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 21/8

6:00 a.m.-4:45 p.m.

1 stop7h 45m

London

Thu 27/8

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

1 stop8h 50m

C$ 629
Quickest round-trip

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 15/9

11:35 a.m.-9:40 p.m.

1 stop7h 05m

London

Wed 16/9

5:40 a.m.-10:39 a.m.

1 stop7h 59m

C$ 653

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sun 2/8

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

1 stop8h 15m

London

Sat 8/8

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

1 stop8h 50m

C$ 683

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 21/9

4:30 p.m.-9:20 a.m.

1 stop13h 50m

London

Thu 24/9

10:05 a.m.-3:24 p.m.

1 stop8h 19m

C$ 686

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Wed 9/9

3:30 p.m.-5:20 a.m.

1 stop10h 50m

London

Sat 12/9

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

1 stop11h 00m

C$ 686

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Thu 23/7

3:30 p.m.-5:20 a.m.

1 stop10h 50m

London

Sun 26/7

5:55 p.m.-2:10 p.m.

1 stop23h 15m

C$ 865

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Wed 9/9

10:30 p.m.-5:43 p.m.

2 stops16h 13m

London

Sat 12/9

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

1 stop9h 36m

C$ 874

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Fri 18/9

3:04 p.m.-2:55 p.m.

2 stops20h 51m

London

Tue 22/9

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

1 stop9h 36m

C$ 874

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Wed 9/9

10:30 p.m.-2:55 p.m.

2 stops13h 25m

London

Sat 12/9

10:05 a.m.-8:36 p.m.

2 stops13h 31m

C$ 885

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/6

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 Delta can get you from California to London, Ontario in just under 7h 05m. Your travel time can differ by up to 3h 45m. 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 Jose - London. You may also consider San Diego - London or San Francisco - 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

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Fly with Cheapflights

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How does Cheapflights help users find flights from California to London?

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Can Cheapflights find flights from California to London with no change fees?

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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