Find flights
When to book
FAQs

Cheap flights from California to London, ON from C$ 593

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 17/12. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from California to London

Enter your travel dates to find the best prices.

Best flights from California to London
Discover carefully curated flight deals from California to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 12 December 2025.

Tue 12/57:10 a.m.SFO - YXU
2 stops11h 28mAir Canada
Wed 13/56:00 a.m.YXU - SFO
1 stop7h 50mAir Canada
Deal found 9/12C$ 599
Tue 12/57:30 a.m.SFO - YXU
1 stop8h 37mWestJet
Wed 13/58:00 p.m.YXU - SFO
1 stop24h 14mWestJet
Deal found 9/12C$ 610
Sun 25/18:49 a.m.SFO - YXU
1 stop9h 31mUnited Airlines
Sun 1/29:25 a.m.YXU - SFO
2 stops19h 05mUnited Airlines
Deal found 11/12C$ 716
Wed 4/310:16 a.m.SJC - YXU
2 stops17h 19mMultiple Airlines
Wed 18/38:10 p.m.YXU - SJC
2 stops25h 55mMultiple Airlines
Deal found 10/12C$ 815
Fri 15/59:05 a.m.SJC - YXU
2 stops17h 07mDelta
Sat 30/56:00 a.m.YXU - SJC
2 stops14h 04mDelta
Deal found 11/12C$ 976
Thu 15/16:05 p.m.SAN - YXU
2 stops11h 41mAir Canada
Sun 18/15:10 a.m.YXU - SAN
1 stop9h 43mAir Canada
Deal found 9/12C$ 805
Mon 19/18:40 a.m.SJC - YXU
2 stops9h 40mAir Canada
Wed 21/15:10 a.m.YXU - SJC
2 stops18h 46mAir Canada
Deal found 9/12C$ 1,146
Fri 15/56:35 p.m.SJC - YXU
3 stops23h 52mUnited Airlines
Sat 30/56:15 a.m.YXU - SJC
2 stops17h 56mUnited Airlines
Deal found 10/12C$ 1,263
Wed 4/38:50 a.m.SJC - YXU
3 stops20h 56mAir Canada
Wed 18/35:10 a.m.YXU - SJC
2 stops19h 06mAir Canada
Deal found 10/12C$ 1,171
Sun 25/18:40 a.m.SJC - YXU
2 stops21h 06mAir Canada
Sun 1/29:25 a.m.YXU - SJC
3 stops14h 31mAir Canada
Deal found 11/12C$ 1,361

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 December 2025.

Round-trip from

C$ 599

One-way from

C$ 593

Popular in

November

Cheapest in

May

Average price

C$ 521
Air Canada
  • Air Canada
  • 12/5-13/5
  • 3 total stops
  • 19h 18m total
  • California to London
Search Deals
Air Canada
  • Air Canada
  • 17/12
  • 1 total stop
  • 9h 51m total
  • California to London
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (C$ 185 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease (C$ 72 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 2025.
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

Tue 12/5

7:10 a.m.-9:38 p.m.

2 stops11h 28m

London

Wed 13/5

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

1 stop7h 50m

C$ 599

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 12/5

7:30 a.m.-7:07 p.m.

1 stop8h 37m

London

Wed 13/5

8:00 p.m.-5:14 p.m.

1 stop24h 14m

C$ 610

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sun 25/1

8:49 a.m.-9:20 p.m.

1 stop9h 31m

London

Sun 1/2

9:25 a.m.-1:30 a.m.

2 stops19h 05m

C$ 716

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Thu 15/1

6:05 p.m.-8:46 a.m.

2 stops11h 41m

London

Sun 18/1

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

1 stop9h 43m

C$ 805

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Wed 4/3

10:16 a.m.-6:35 a.m.

2 stops17h 19m

London

Wed 18/3

8:10 p.m.-7:05 p.m.

2 stops25h 55m

C$ 815

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Fri 15/5

9:05 a.m.-5:12 a.m.

2 stops17h 07m

London

Sat 30/5

6:00 a.m.-5:04 p.m.

2 stops14h 04m

C$ 976

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Mon 19/1

8:40 a.m.-9:20 p.m.

2 stops9h 40m

London

Wed 21/1

5:10 a.m.-8:56 p.m.

2 stops18h 46m

C$ 1,146

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Wed 4/3

8:50 a.m.-8:46 a.m.

3 stops20h 56m

London

Wed 18/3

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

2 stops19h 06m

C$ 1,171

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Fri 15/5

6:35 p.m.-9:27 p.m.

3 stops23h 52m

London

Sat 30/5

6:15 a.m.-9:11 p.m.

2 stops17h 56m

C$ 1,263

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Sun 25/1

8:40 a.m.-8:46 a.m.

2 stops21h 06m

London

Sun 1/2

9:25 a.m.-8:56 p.m.

3 stops14h 31m

C$ 1,361

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/12

Showing 1-10 of 15 results
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

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

Currently, December is the cheapest month in which you can book a flight from California to London, Ontario (average of C$ 28). Flying from California to London, Ontario in November is currently the most expensive (average of C$ 207). 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 Delta can get you from California to London, Ontario in just under 11h 28m. Your travel time can differ by up to 5h 39m. 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, December is the cheapest month in which you can book a flight from California to London, Ontario (average of C$ 28). Flying from California to London, Ontario in November is currently the most expensive (average of C$ 207). 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?

Book flights to London if you plan to visit one of these locations
Port Stanley
Grand Bend

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for California to London

See prices for flight routes from nearby airports that may be better suited for you.
LaGuardia to Pearson Intl flights
Newark to Pearson Intl flights
Newark to Toronto Island flights
John F Kennedy Intl to Pearson Intl flights
Newark to Pierre Elliott Trudeau Intl flights
LaGuardia to Pierre Elliott Trudeau Intl flights
John F Kennedy Intl to Pierre Elliott Trudeau Intl flights
Reagan-National to Pearson Intl flights
Dulles Intl to Pearson Intl flights
Dulles Intl to Pierre Elliott Trudeau Intl flights
Dallas/Fort Worth to Pearson Intl flights
O'Hare Intl to Pearson Intl flights
Los Angeles to Pearson Intl flights
Boston to Pearson Intl flights
San Francisco to Pearson Intl flights
Fort Lauderdale to Pierre Elliott Trudeau Intl flights
Reagan-National to Pierre Elliott Trudeau Intl flights
Atlanta to Pearson Intl flights
Los Angeles to Pierre Elliott Trudeau Intl flights
Hobby to Pearson Intl flights
Boston to Pierre Elliott Trudeau Intl flights
Boston to Toronto Island flights
O'Hare Intl to Pierre Elliott Trudeau Intl flights
Dulles Intl to Toronto Island flights
Fort Lauderdale to Pearson Intl flights
George Bush Intcntl to Pearson Intl flights
Seattle to Pearson Intl flights
Baltimore to Pearson Intl flights
Sky Harbor Intl to Pearson Intl flights
Miami to Pearson Intl flights
Philadelphia to Pierre Elliott Trudeau Intl flights
San Francisco to Pierre Elliott Trudeau Intl flights
Midway to Toronto Island flights
Miami to Pierre Elliott Trudeau Intl flights
Minneapolis to Pearson Intl flights
Orlando to Pearson Intl flights
Baltimore to Pierre Elliott Trudeau Intl flights
Orlando to Pierre Elliott Trudeau Intl flights
Raleigh to Pearson Intl flights
Midway to Pearson Intl flights
Philadelphia to Pearson Intl flights
Tampa to Pearson Intl flights
Newark to Ottawa flights
Charlotte to Pearson Intl flights
San Diego to Pearson Intl flights
Hobby to Pierre Elliott Trudeau Intl flights
Denver to Pierre Elliott Trudeau Intl flights
O'Hare Intl to Toronto Island flights
Dallas/Fort Worth to Pierre Elliott Trudeau Intl flights
Raleigh to Pierre Elliott Trudeau Intl flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to London from California today with Cheapflights!

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.

Can Cheapflights notify me if prices for flights from California to London become cheaper?

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!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.