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Cheap flights from London, ON to California from C$ 266

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 21/4. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — LAX
9 Apr — 16 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to California

Enter your travel dates to find the best prices.

Cheapest flights from London to California
Explore the most affordable flight options available from London to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 March 2026.

Tue 14/48:00 a.m.
YXU
-
SFO
1 stop31h 05m
WestJet
Tue 28/46:00 a.m.
SFO
-
YXU
1 stop7h 45m
WestJet
Deal found 8/3C$ 433
Tue 14/48:00 a.m.
YXU
-
LAS
1 stop13h 13m
WestJet
Thu 16/41:10 p.m.
LAS
-
YXU
2 stops14h 25m
WestJet
Deal found 5/3C$ 456
Fri 29/52:40 p.m.
YXU
-
SFO
2 stops10h 15m
WestJet
Sat 30/56:00 a.m.
SFO
-
YXU
1 stop7h 45m
WestJet
Deal found 6/3C$ 460
Wed 15/48:10 p.m.
YXU
-
SFO
1 stop19h 00m
WestJet
Tue 28/46:00 a.m.
SFO
-
YXU
1 stop7h 45m
WestJet
Deal found 8/3C$ 470
Tue 7/48:10 p.m.
YXU
-
SFO
1 stop18h 55m
WestJet
Wed 22/41:00 p.m.
SFO
-
YXU
1 stop14h 35m
WestJet
Deal found 9/3C$ 498
Tue 7/48:10 p.m.
YXU
-
SFO
1 stop18h 55m
WestJet
Sun 19/41:00 p.m.
SFO
-
YXU
1 stop14h 35m
WestJet
Deal found 9/3C$ 503
Tue 14/48:00 a.m.
YXU
-
LAS
1 stop16h 33m
WestJet
Mon 20/47:05 p.m.
LAS
-
YXU
1 stop8h 30m
WestJet
Deal found 5/3C$ 505
Wed 15/48:10 p.m.
YXU
-
SFO
1 stop19h 00m
WestJet
Wed 29/41:00 p.m.
SFO
-
YXU
1 stop24h 45m
WestJet
Deal found 9/3C$ 505
Tue 14/48:00 a.m.
YXU
-
SFO
1 stop31h 05m
WestJet
Thu 30/41:00 p.m.
SFO
-
YXU
1 stop13h 20m
WestJet
Deal found 9/3C$ 509
Mon 13/48:10 p.m.
YXU
-
LAS
1 stop25h 03m
WestJet
Thu 16/42:55 p.m.
LAS
-
YXU
1 stop12h 40m
WestJet
Deal found 5/3C$ 510
Thu 23/48:00 a.m.
YXU
-
LAX
2 stops14h 52m
WestJet
Thu 30/46:05 p.m.
LAX
-
YXU
1 stop8h 15m
WestJet
Deal found 9/3C$ 525
Wed 22/48:00 a.m.
YXU
-
LAX
2 stops32h 45m
Multiple Airlines
Wed 29/47:30 a.m.
LAX
-
YXU
1 stop18h 50m
Multiple Airlines
Deal found 8/3C$ 537

Find flight deals from London to California

Keep the following information in mind while searching for London to California flight deals. Data was last updated 10 March 2026.

Round-trip from

C$ 433

One-way from

C$ 266

Popular in

February

Cheapest in

June

Average price

C$ 1,276
WestJet
  • WestJet
  • 14/4-28/4
  • 2 total stops
  • 38h 50m total
  • London to California
Search Deals
21/4
  • 21/4
  • 2 total stops
  • 15h 11m total
  • London to California
Search Deals
Highest demand for flights based on searches. 38% potential increase in price (C$ 569 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 12% potential price decrease (C$ 104 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from London to California 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 10 March 2026.
Use the filters below to find and compare flights from London to California that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonSan Francisco

YXU - SFO

YXUSFO

London

Fri 29/5

2:40 p.m.-9:55 p.m.

2 stops10h 15m

San Francisco

Sat 30/5

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

1 stop7h 45m

C$ 460

LondonSan Francisco

YXU - SFO

YXUSFO

London

Fri 29/5

5:40 a.m.-1:29 p.m.

2 stops10h 49m

San Francisco

Sat 30/5

5:05 a.m.-9:38 p.m.

2 stops13h 33m

C$ 536

LondonLos Angeles

YXU - LAX

YXULAX

London

Fri 5/6

3:30 p.m.-9:00 p.m.

1 stop8h 30m

Los Angeles Los Angeles

Sun 7/6

10:30 p.m.-2:58 p.m.

2 stops13h 28m

C$ 547

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 16/4

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

1 stop8h 45m

San Francisco

Wed 29/4

2:30 p.m.-8:44 a.m.

1 stop15h 14m

C$ 559

LondonLas Vegas

YXU - LAS

YXULAS

London

Mon 1/6

6:10 a.m.-3:45 p.m.

2 stops12h 35m

Las Vegas Harry Reid Intl

Sat 6/6

6:10 p.m.-5:20 a.m.

1 stop8h 10m

C$ 589

LondonPalm Springs

YXU - PSP

YXUPSP

London

Sat 2/5

5:40 a.m.-5:21 p.m.

2 stops14h 41m

Palm Springs

Tue 5/5

7:35 p.m.-9:38 p.m.

3 stops23h 03m

C$ 626

LondonSan Francisco

YXU - SFO

YXUSFO

London

Tue 7/4

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

1 stop8h 45m

San Francisco

Fri 24/4

7:00 p.m.-5:04 p.m.

2 stops19h 04m

C$ 632

LondonSan Diego

YXU - SAN

YXUSAN

London

Wed 6/5

5:40 a.m.-12:18 p.m.

1 stop9h 38m

San Diego

Fri 8/5

7:40 p.m.-9:38 p.m.

3 stops22h 58m

C$ 635

LondonSan Francisco

YXU - SFO

YXUSFO

London

Sun 19/4

5:10 a.m.-1:35 a.m.

2 stops23h 25m

San Francisco

Sun 26/4

11:59 p.m.-5:04 p.m.

2 stops14h 05m

C$ 636

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 9/4

5:10 a.m.-3:35 p.m.

2 stops13h 25m

San Francisco

Tue 21/4

11:55 p.m.-5:04 p.m.

2 stops14h 09m

C$ 640

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

Showing 1-10 of 60 resultsSorted by cheapest first
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2
3
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6

Best time to book a flight from London to California

Have a flexible travel schedule? Discover the best time to fly to California from London 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 London to California

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

Currently, July is the cheapest month in which you can book a flight from London, Ontario to California (average of C$ 130). Flying from London, Ontario to California in January is currently the most expensive (average of C$ 259). 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.

Reviews of airlines servicing California

Get insights into the airlines that provide service to California. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to California. Reviews last updated 10 March 2026.
Check out reviews from past customers who have flown with United Airlines,WestJet, andAir Canada from London to California to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,409 reviews
Check prices

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
9,409 reviews
United Airlines
7.4
Good
9,409 reviews
Check prices

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
WestJet
7.2
Good
3,288 reviews
United Airlines
7.4
Good
9,409 reviews
Check prices

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
Air Canada
7.1
Good
10,800 reviews
United Airlines
7.4
Good
9,409 reviews
Check prices

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Related info for your journey

Find useful and relevant information for your journey from London to California. 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 from for flights from London to California?

    For a flight from London to California, you will be flying from London. London (YXU) is just 8.6 km from the centre of the city.

  • How long is the flight from London, Ontario to California?

    Departing from London, Ontario to California will take you 8h 30m. There are 3364 km between London, Ontario and California. This flight may include one or multiple stops.

  • What are the most popular routes from London, Ontario to California?

    Most travellers choose London - Las Vegas Harry Reid Intl, London - San Francisco or London - Los Angeles Los Angeles when deciding on the best route from London, Ontario to California.

  • Can I find deals for flights from London to California that include hotel bookings?

    Yes. In addition to deals on London to California flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from London to California?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to California.

  • Can I find deals for business class flights from London to California?

    Yes. Cheapflights offers flight deals from London to California 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 London, Ontario to California?

    Currently, July is the cheapest month in which you can book a flight from London, Ontario to California (average of C$ 130). Flying from London, Ontario to California in January is currently the most expensive (average of C$ 259). 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

Browse thousands of different options on Cheapflights for your next trip

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See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from London to California

Discover the top 3 airlines that operate flights from London to California. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 10 March 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 216AverageC$ 373FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 250AverageC$ 644FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 342AverageC$ 566FlexibilityNo cancel feeOn-time69%
Search United Airlines 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 London to California?

Cheapflights makes it easy to find London to California flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Cheapflights helps you find that perfect flight to California from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Yes! Cheapflights helps users easily find flights from London to California with no change fees.

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

Of course! You can now track prices for flights from London to California and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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