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Cheap flights from California to London, ON from C$ 277

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
20 Feb — 27 Feb1
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 21 January 2026.

Sat 11/48:30 a.m.
SFO
-
YXU
1 stop9h 48m
Air Canada
Wed 15/45:10 a.m.
YXU
-
SFO
1 stop8h 35m
Air Canada
Deal found 19/1C$ 554
Wed 29/48:30 a.m.
SFO
-
YXU
1 stop9h 48m
Air Canada
Sun 3/56:00 a.m.
YXU
-
SFO
1 stop7h 50m
Air Canada
Deal found 19/1C$ 592
Fri 6/34:15 p.m.
SFO
-
YXU
1 stop13h 31m
Air Canada
Fri 13/35:10 a.m.
YXU
-
SFO
1 stop8h 44m
Air Canada
Deal found 19/1C$ 601
Wed 18/36:45 a.m.
SFO
-
YXU
2 stops11h 36m
Air Canada
Sun 22/39:25 a.m.
YXU
-
SFO
2 stops24h 58m
Air Canada
Deal found 19/1C$ 715
Fri 6/38:53 a.m.
SFO
-
YXU
1 stop9h 28m
United Airlines
Fri 13/35:10 a.m.
YXU
-
SFO
1 stop8h 44m
United Airlines
Deal found 19/1C$ 747
Fri 15/57:59 p.m.
SJC
-
YXU
2 stops20h 08m
Multiple Airlines
Sat 30/56:00 a.m.
YXU
-
SJC
2 stops30h 13m
Multiple Airlines
Deal found 19/1C$ 882
Fri 6/36:55 p.m.
SAN
-
YXU
2 stops19h 10m
United Airlines
Mon 9/39:25 a.m.
YXU
-
SAN
2 stops28h 15m
United Airlines
Deal found 20/1C$ 962
Fri 6/36:05 p.m.
SAN
-
YXU
2 stops20h 00m
Air Canada
Mon 9/35:10 a.m.
YXU
-
SAN
1 stop9h 43m
Air Canada
Deal found 18/1C$ 972
Sat 7/37:55 a.m.
SAN
-
YXU
2 stops20h 51m
United Airlines
Sat 14/39:25 a.m.
YXU
-
SAN
2 stops16h 15m
United Airlines
Deal found 21/1C$ 976
Wed 4/38:50 a.m.
SJC
-
YXU
2 stops9h 31m
Air Canada
Wed 18/35:10 a.m.
YXU
-
SJC
2 stops19h 06m
Air Canada
Deal found 21/1C$ 1,074
Sun 1/38:50 a.m.
SJC
-
YXU
2 stops33h 31m
Air Canada
Thu 5/35:10 a.m.
YXU
-
SJC
2 stops11h 31m
Air Canada
Deal found 20/1C$ 1,166
Sat 7/310:55 p.m.
SJC
-
YXU
2 stops14h 10m
Multiple Airlines
Sat 14/35:10 a.m.
YXU
-
SJC
2 stops19h 06m
Multiple Airlines
Deal found 20/1C$ 1,207

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 21 January 2026.

Round-trip from

C$ 554

One-way from

C$ 277

Popular in

November

Cheapest in

May

Average price

C$ 424
Air Canada
  • Air Canada
  • 11/4-15/4
  • 2 total stops
  • 18h 23m total
  • California to London
Search Deals
Air Canada
  • Air Canada
  • 23/4
  • 1 total stop
  • 13h 28m total
  • California to London
Search Deals
Highest demand for flights based on searches. 27% potential increase in price (C$ 334 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (C$ 67 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 21 January 2026.
Use the filters below to find and compare flights from California to London that are best for you.

Fly from

California

Fly to

London

Route

Depart

Return

Price

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sat 11/4

8:30 a.m.-9:18 p.m.

1 stop9h 48m

London

Wed 15/4

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

1 stop8h 35m

C$ 554

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Wed 29/4

8:30 a.m.-9:18 p.m.

1 stop9h 48m

London

Sun 3/5

6:00 a.m.-10:50 a.m.

1 stop7h 50m

C$ 592

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 6/3

4:15 p.m.-8:46 a.m.

1 stop13h 31m

London

Fri 13/3

5:10 a.m.-10:54 a.m.

1 stop8h 44m

C$ 601

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Fri 15/5

7:59 p.m.-7:07 p.m.

2 stops20h 08m

London

Sat 30/5

6:00 a.m.-9:13 a.m.

2 stops30h 13m

C$ 882

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Fri 6/3

6:55 p.m.-5:05 p.m.

2 stops19h 10m

London

Mon 9/3

9:25 a.m.-10:40 a.m.

2 stops28h 15m

C$ 962

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Fri 6/3

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

2 stops20h 00m

London

Mon 9/3

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

1 stop9h 43m

C$ 972

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Sat 7/3

7:55 a.m.-7:46 a.m.

2 stops20h 51m

London

Sat 14/3

9:25 a.m.-10:40 p.m.

2 stops16h 15m

C$ 976

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Wed 4/3

8:50 a.m.-9:21 p.m.

2 stops9h 31m

London

Wed 18/3

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

2 stops19h 06m

C$ 1,074

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Sun 1/3

8:50 a.m.-9:21 p.m.

2 stops33h 31m

London

Thu 5/3

5:10 a.m.-1:41 p.m.

2 stops11h 31m

C$ 1,166

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 23/4

4:15 p.m.-8:43 a.m.

1 stop13h 28m

C$ 277

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/1

Showing 1-10 of 13 results
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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$ 102). Flying from California to London, Ontario in December is currently the most expensive (average of C$ 213). 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 and United Airlines can get you from California to London, Ontario in just under 9h 48m. Your travel time can differ by up to 9h 22m. 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$ 102). Flying from California to London, Ontario in December is currently the most expensive (average of C$ 213). 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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