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$155+ Cheap flights from London, ON (YXU) to California

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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — LAX
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheap flight deals from London to California

Keep the following information in mind while searching for London to California flight deals. Data was last updated July 30, 2025.

Round-trip from

$286
(Mytrip)

One-way from

$155
(Mytrip)

Popular in

July

Cheapest in

June

Average price

$531
From London to California
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One-way flight from London to California
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Highest demand for flights based on searches. 7% potential increase in price ($29 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from London to California

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 July 30, 2025.

This Mytrip deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/106:00 amYXU - SFO
1 stop8h 54mWestJet
Tue 9/237:30 amSFO - YXU
1 stop8h 37mWestJet
Deal found 7/29$286
This Trip.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/106:00 amYXU - SFO
1 stop8h 54mMultiple Airlines
Tue 9/2310:15 amSFO - YXU
3 stops15h 57mMultiple Airlines
Deal found 7/29$303
This Air Canada deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/103:50 pmYXU - SFO
1 stop8h 03mAir Canada
Tue 9/234:35 pmSFO - YXU
2 stops13h 44mAir Canada
Deal found 7/29$304
This Air Canada deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/53:50 pmYXU - LAS
1 stop9h 23mAir Canada
Sat 9/2011:20 pmLAS - YXU
1 stop6h 59mAir Canada
Deal found 7/27$321
This SmartFares deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/116:00 amYXU - LAS
2 stops12h 01mWestJet
Thu 9/186:20 pmLAS - YXU
1 stop7h 52mWestJet
Deal found 7/28$334
This Air Canada deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/126:10 amYXU - LAX
1 stop7h 20mAir Canada
Wed 9/179:55 pmLAX - YXU
1 stop8h 24mAir Canada
Deal found 7/30$380
This WestJet deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/126:00 amYXU - LAX
2 stops32h 43mWestJet
Fri 9/196:05 pmLAX - YXU
1 stop8h 07mWestJet
Deal found 7/29$385
This SmartFares deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/286:00 amYXU - SAN
1 stop10h 20mWestJet
Wed 10/12:05 pmSAN - YXU
1 stop12h 07mWestJet
Deal found 7/30$386
This Mytrip deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/116:00 amYXU - LAS
2 stops12h 01mMultiple Airlines
Thu 9/187:30 pmLAS - YXU
3 stops30h 42mMultiple Airlines
Deal found 7/28$414
This United Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/183:50 pmYXU - LAS
2 stops11h 04mUnited Airlines
Sun 9/2112:59 amLAS - YXU
2 stops11h 18mUnited Airlines
Deal found 7/30$439
This United Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/126:10 amYXU - LAX
1 stop9h 18mUnited Airlines
Tue 9/1612:56 amLAX - YXU
2 stops11h 21mUnited Airlines
Deal found 7/30$456
This United Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/286:10 amYXU - SAN
2 stops20h 31mUnited Airlines
Wed 10/18:08 pmSAN - YXU
3 stops15h 54mUnited Airlines
Deal found 7/30$492

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 2,558,603 searches. Data last updated July 30, 2025.
Use the filters below to find and compare flights from London to California that are best for you.

Fly from

London

Fly to

California

Route

Depart

Return

Price

LondonSan Francisco

YXU - SFO

YXUSFO

London

Wed 9/10

6:00 am-11:54 am

1 stop8h 54m

San Francisco

Tue 9/23

7:30 am-7:07 pm

1 stop8h 37m

$286

LondonSan Francisco

YXU - SFO

YXUSFO

London

Wed 9/10

6:00 am-11:54 am

1 stop8h 54m

San Francisco

Tue 9/23

10:15 am-5:12 am

3 stops15h 57m

$303

LondonSan Francisco

YXU - SFO

YXUSFO

London

Wed 9/10

3:50 pm-8:53 pm

1 stop8h 03m

San Francisco

Tue 9/23

4:35 pm-9:19 am

2 stops13h 44m

$304

LondonLas Vegas

YXU - LAS

YXULAS

London

Fri 9/5

3:50 pm-10:13 pm

1 stop9h 23m

Las Vegas Harry Reid Intl

Sat 9/20

11:20 pm-9:19 am

1 stop6h 59m

$321

LondonLas Vegas

YXU - LAS

YXULAS

London

Thu 9/11

6:00 am-3:01 pm

2 stops12h 01m

Las Vegas Harry Reid Intl

Thu 9/18

6:20 pm-5:12 am

1 stop7h 52m

$334

LondonLos Angeles

YXU - LAX

YXULAX

London

Fri 9/12

6:10 am-10:30 am

1 stop7h 20m

Los Angeles

Wed 9/17

9:55 pm-9:19 am

1 stop8h 24m

$380

LondonLos Angeles

YXU - LAX

YXULAX

London

Fri 9/12

6:00 am-11:43 am

2 stops32h 43m

Los Angeles

Fri 9/19

6:05 pm-5:12 am

1 stop8h 07m

$385

LondonSan Diego

YXU - SAN

YXUSAN

London

Sun 9/28

6:00 am-1:20 pm

1 stop10h 20m

San Diego

Wed 10/1

2:05 pm-5:12 am

1 stop12h 07m

$386

LondonLas Vegas

YXU - LAS

YXULAS

London

Thu 9/11

6:00 am-3:01 pm

2 stops12h 01m

Las Vegas Harry Reid Intl

Thu 9/18

7:30 pm-5:12 am

3 stops30h 42m

$414

LondonLas Vegas

YXU - LAS

YXULAS

London

Thu 9/18

3:50 pm-11:54 pm

2 stops11h 04m

Las Vegas Harry Reid Intl

Sun 9/21

12:59 am-3:17 pm

2 stops11h 18m

$439

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 50 results
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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, January is the cheapest month in which you can book a flight from London, Ontario to California (average of $246). Flying from London, Ontario to California in March is currently the most expensive (average of $326). 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 July 30, 2025.
Read through reviews of airlines operating flights from London to California, such as Delta, United Airlines, and WestJet. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,980 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,896 reviews
Delta
8.0
Very good
7,980 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
WestJet
7.2
Good
2,975 reviews
Delta
8.0
Very good
7,980 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air Canada
7.1
Good
9,837 reviews
Delta
8.0
Very good
7,980 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Flair Airlines
6.0
Okay
247 reviews
Delta
8.0
Very good
7,980 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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?

    Most people fly from London (YXU) if they book a flight from London to California. London is conveniently located just 5.3 mi from London’s city center.

  • What are the cheapest airlines to fly from London, Ontario to California one-way?

    $155 is the cheapest one-way deal found within the past few days, from Flair Airlines. You may also be able to find cheap deals on Air Canada and WestJet, with prices starting from $172 and $179, respectively.

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

    The most popular route from London, Ontario to California is London - Las Vegas Harry Reid Intl. You may also consider London - San Francisco or London - Ontario.

  • 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, January is the cheapest month in which you can book a flight from London, Ontario to California (average of $246). Flying from London, Ontario to California in March is currently the most expensive (average of $326). 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

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Alternative routes for London to California

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

Discover the top airline 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 2,558,603 searches. Data last updated July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$222Average$268FlexibilityNo cancel feeOn-time67%

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