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Cheap flights from California to London, ON from C$ 201

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 23/4. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
30 Mar — 6 Apr1
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 28 February 2026.

Wed 13/56:00 a.m.
SFO
-
YXU
1 stop7h 45m
WestJet
Mon 1/66:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Deal found 26/2C$ 456
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 26/2C$ 479
Sat 11/48:30 a.m.
SFO
-
YXU
1 stop9h 49m
Air Canada
Wed 15/45:10 a.m.
YXU
-
SFO
1 stop8h 45m
Air Canada
Deal found 24/2C$ 492
Mon 30/34:20 p.m.
SFO
-
YXU
1 stop13h 23m
Air Canada
Wed 1/49:40 a.m.
YXU
-
SFO
1 stop8h 40m
Air Canada
Deal found 26/2C$ 526
Thu 21/56:00 a.m.
SFO
-
YXU
2 stops28h 30m
WestJet
Mon 25/56:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Deal found 27/2C$ 563
Sat 11/46:32 a.m.
SAN
-
YXU
2 stops11h 46m
United Airlines
Sat 18/45:10 a.m.
YXU
-
SAN
1 stop9h 43m
United Airlines
Deal found 25/2C$ 590
Fri 10/77:30 p.m.
SFO
-
YXU
2 stops13h 15m
Air Canada
Tue 14/76:10 p.m.
YXU
-
SFO
2 stops19h 10m
Air Canada
Deal found 26/2C$ 602
Sat 11/46:32 a.m.
SAN
-
YXU
2 stops11h 47m
Air Canada
Sat 18/49:25 a.m.
YXU
-
SAN
2 stops12h 28m
Air Canada
Deal found 25/2C$ 612
Mon 22/63:30 p.m.
SAN
-
YXU
2 stops20h 15m
WestJet
Mon 29/65:55 p.m.
YXU
-
SAN
1 stop23h 15m
WestJet
Deal found 25/2C$ 624
Wed 24/612:30 p.m.
SAN
-
YXU
1 stop17h 22m
Air Canada
Tue 14/76:00 a.m.
YXU
-
SAN
1 stop8h 35m
Air Canada
Deal found 25/2C$ 666
Mon 22/67:00 a.m.
SAN
-
YXU
2 stops11h 37m
Air Canada
Mon 29/69:30 a.m.
YXU
-
SAN
2 stops12h 02m
Air Canada
Deal found 24/2C$ 769
Wed 13/51:14 p.m.
SJC
-
YXU
2 stops13h 06m
Multiple Airlines
Mon 1/66:10 a.m.
YXU
-
SJC
2 stops19h 49m
Multiple Airlines
Deal found 26/2C$ 806

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 28 February 2026.

Round-trip from

C$ 456

One-way from

C$ 201
WestJet
  • WestJet
  • 13/5-1/6
  • 2 total stops
  • 16h 35m total
  • California to London
Search Deals
WestJet
  • WestJet
  • 23/4
  • 1 total stop
  • 14h 35m 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 28 February 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

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sat 11/4

8:30 a.m.-9:19 p.m.

1 stop9h 49m

London

Wed 15/4

5:10 a.m.-10:55 a.m.

1 stop8h 45m

C$ 492

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Sat 11/4

6:32 a.m.-9:18 p.m.

2 stops11h 46m

London

Sat 18/4

5:10 a.m.-11:53 a.m.

1 stop9h 43m

C$ 590

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 21/5

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

1 stop7h 45m

London

Mon 25/5

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

1 stop8h 50m

C$ 595

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Sat 11/4

6:32 a.m.-9:19 p.m.

2 stops11h 47m

London

Sat 18/4

9:25 a.m.-6:53 p.m.

2 stops12h 28m

C$ 612

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Mon 22/6

3:30 p.m.-2:45 p.m.

2 stops20h 15m

London

Mon 29/6

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

1 stop23h 15m

C$ 624

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sun 12/4

11:20 p.m.-5:04 p.m.

2 stops14h 44m

London

Sun 19/4

5:40 p.m.-1:35 a.m.

2 stops10h 55m

C$ 628

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 13/4

11:52 p.m.-5:04 p.m.

2 stops14h 12m

London

Mon 20/4

5:40 p.m.-1:17 a.m.

2 stops10h 37m

C$ 628

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Wed 24/6

10:40 p.m.-2:57 p.m.

2 stops13h 17m

London

Tue 14/7

12:20 p.m.-8:39 p.m.

2 stops11h 19m

C$ 761

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Mon 22/6

7:00 a.m.-9:37 p.m.

2 stops11h 37m

London

Mon 29/6

9:30 a.m.-6:32 p.m.

2 stops12h 02m

C$ 769

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Mon 22/6

10:40 p.m.-9:37 p.m.

2 stops19h 57m

London

Mon 29/6

9:30 a.m.-10:34 p.m.

2 stops16h 04m

C$ 770

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/2

Showing 1-10 of 22 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

What is the cheapest month to book a flight from California to London, Ontario?

Currently, June is the cheapest month in which you can book a flight from California to London, Ontario (average of C$ 104). Flying from California to London, Ontario in December is currently the most expensive (average of C$ 210). 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 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?

    Air Canada, United Airlines, and WestJet can get you from California to London, Ontario in just under 9h 49m. Your travel time can differ by up to 10h 26m. 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 Jose - London or San Diego - 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.

  • What is the cheapest month to book a flight from California to London, Ontario?

    Currently, June is the cheapest month in which you can book a flight from California to London, Ontario (average of C$ 104). Flying from California to London, Ontario in December is currently the most expensive (average of C$ 210). 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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Fly with Cheapflights

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

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Why should you use Cheapflights to find cheap flight tickets from California to London?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from California to London for you. Better yet — we are completely free to use.

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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Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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