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Cheap flights from California to London, ON from C$ 242

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 25/9. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
11 Sep — 18 Sep1
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 12 August 2026.

Tue 6/103:30 p.m. -
1 stop10h 50m
Thu 22/106:10 a.m. -
1 stop11h 00m
Deal found 9/8C$ 606
Fri 25/91:10 p.m. -
2 stops13h 10m
Fri 2/106:10 a.m. -
1 stop18h 45m
Deal found 11/8C$ 660
Fri 25/96:00 a.m. -
1 stop7h 45m
Fri 2/106:10 a.m. -
1 stop18h 45m
Deal found 11/8C$ 667
Tue 6/107:04 p.m. -
2 stops31h 16m
Thu 22/106:10 a.m. -
1 stop11h 00m
Deal found 9/8C$ 673
Fri 9/101:35 p.m. -
2 stops12h 45m
Thu 22/106:10 a.m. -
1 stop11h 00m
Deal found 9/8C$ 674
Thu 10/96:00 a.m. -
1 stop20h 20m
Fri 18/96:10 a.m. -
1 stop8h 50m
Deal found 11/8C$ 681
Thu 8/101:35 p.m. -
2 stops12h 45m
Thu 22/106:10 a.m. -
1 stop11h 00m
Deal found 9/8C$ 689
Mon 5/107:04 p.m. -
2 stops31h 16m
Thu 22/106:10 a.m. -
1 stop11h 00m
Deal found 9/8C$ 694
Thu 8/103:30 p.m. -
1 stop10h 50m
Tue 20/106:10 a.m. -
1 stop11h 00m
Deal found 9/8C$ 710
Fri 9/103:30 p.m. -
1 stop10h 50m
Tue 20/106:10 a.m. -
2 stops16h 27m
Deal found 9/8C$ 717
Fri 9/103:30 p.m. -
1 stop10h 50m
Sat 17/106:10 a.m. -
2 stops16h 27m
Deal found 9/8C$ 719
Tue 6/107:00 a.m. -
2 stops11h 40m
Tue 20/105:40 a.m. -
2 stops13h 32m
Deal found 9/8C$ 726

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 12 August 2026.

Round-trip from

C$ 606

One-way from

C$ 242
WestJet
  • WestJet
  • 6/10-22/10
  • 2 total stops
  • 21h 50m total
  • California to London
Search Deals
25/9
  • 25/9
  • 2 total stops
  • 13h 10m 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 12 August 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 FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Fri 25/9

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

1 stop7h 45m

London

Fri 2/10

6:10 a.m.-9:55 p.m.

1 stop18h 45m

C$ 667

San DiegoLondon

SAN San Diego - YXU London

SANYXU

San Diego

Thu 24/9

1:10 p.m.-9:20 a.m.

1 stop17h 10m

London

Thu 1/10

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

1 stop9h 36m

C$ 755
Quickest round-trip

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Mon 21/9

8:10 a.m.-9:40 p.m.

2 stops10h 30m

London

Fri 25/9

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

1 stop8h 19m

C$ 812

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Thu 1/10

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

1 stop7h 45m

London

Mon 5/10

5:55 p.m.-12:00 p.m.

1 stop21h 05m

C$ 833

San DiegoLondon

SAN San Diego - YXU London

SANYXU

San Diego

Wed 23/9

1:10 p.m.-9:20 a.m.

1 stop17h 10m

London

Sat 26/9

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

1 stop9h 36m

C$ 898

San DiegoLondon

SAN San Diego - YXU London

SANYXU

San Diego

Wed 9/9

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

1 stop10h 50m

London

Fri 11/9

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

1 stop23h 15m

C$ 900

San DiegoLondon

SAN San Diego - YXU London

SANYXU

San Diego

Wed 9/9

1:10 p.m.-9:20 a.m.

1 stop17h 10m

London

Fri 11/9

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

1 stop9h 36m

C$ 914

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Fri 28/8

11:39 p.m.-2:50 p.m.

2 stops12h 11m

London

Mon 31/8

10:05 a.m.-8:51 p.m.

2 stops13h 46m

C$ 967

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Mon 21/9

12:35 a.m.-2:50 p.m.

2 stops11h 15m

London

Tue 29/9

5:40 a.m.-12:34 p.m.

1 stop9h 54m

C$ 992

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Wed 23/9

6:30 p.m.-2:50 p.m.

2 stops17h 20m

London

Wed 30/9

3:30 p.m.-8:59 p.m.

1 stop8h 29m

C$ 993

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/8

Showing 1-10 of 21 resultsSorted by cheapest first
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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 7h 45m. Your travel time can differ by up to 9h 25m. 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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