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Cheap flights from the United Kingdom to California from £336

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 23/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — LAX
23 Jul — 30 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to California

Enter your travel dates to find the best prices.

Cheapest flights from United Kingdom to California
Explore the most affordable flight options available from United Kingdom to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 June 2026.

Wed 8/707:25
LHR
-
ONT
2 stops23h 26m
United Airlines
Mon 13/706:10
ONT
-
LHR
1 stop16h 35m
United Airlines
Deal found 20/6£419
Fri 20/1109:30
LHR
-
ONT
2 stops18h 36m
United Airlines
Sat 28/1109:00
ONT
-
LHR
1 stop14h 25m
United Airlines
Deal found 20/6£419
Wed 8/709:30
LHR
-
ONT
2 stops20h 25m
United Airlines
Thu 16/713:50
ONT
-
LHR
1 stop16h 20m
United Airlines
Deal found 19/6£420
Wed 8/709:30
LHR
-
ONT
2 stops20h 25m
United Airlines
Wed 22/706:10
ONT
-
LHR
1 stop21h 45m
United Airlines
Deal found 18/6£424
Thu 27/809:30
LHR
-
ONT
2 stops19h 23m
United Airlines
Wed 9/906:00
ONT
-
LHR
1 stop21h 10m
United Airlines
Deal found 18/6£425
Fri 3/710:00
LHR
-
ONT
1 stop19h 55m
Lufthansa
Sat 18/705:00
ONT
-
LHR
1 stop23h 25m
Lufthansa
Deal found 19/6£442
Thu 2/713:40
LHR
-
ONT
1 stop16h 15m
United Airlines
Thu 30/705:00
ONT
-
LHR
1 stop20h 40m
United Airlines
Deal found 20/6£443
Sat 27/616:15
LHR
-
ONT
1 stop14h 35m
United Airlines
Fri 3/713:18
ONT
-
LHR
1 stop12h 22m
United Airlines
Deal found 19/6£444
Fri 26/616:15
LHR
-
ONT
1 stop14h 22m
United Airlines
Thu 9/706:00
ONT
-
LHR
1 stop24h 10m
United Airlines
Deal found 19/6£444
Fri 23/1015:05
LHR
-
ONT
2 stops34h 41m
Air Canada
Mon 2/1105:00
ONT
-
LHR
2 stops18h 10m
Air Canada
Deal found 20/6£445
Sat 27/614:50
LHR
-
ONT
1 stop13h 52m
United Airlines
Fri 10/713:18
ONT
-
LHR
2 stops24h 07m
United Airlines
Deal found 18/6£447
Wed 30/911:25
LHR
-
ONT
1 stop17h 33m
United Airlines
Thu 8/1013:24
ONT
-
LHR
1 stop12h 16m
United Airlines
Deal found 18/6£448

Find flight deals from United Kingdom to California

Keep the following information in mind while searching for United Kingdom to California flight deals. Data was last updated 23 June 2026.

Round-trip from

£419

One-way from

£336

Popular in

December

Cheapest in

September

Average price

£551

Good round-trip deal

£530 or less

Good one-way deal

£297 or less
United Airlines
  • United Airlines
  • 8/7-13/7
  • 3 total stops
  • 40h 01m total
  • United Kingdom to California
Search Deals
American Airlines
  • American Airlines
  • 23/10
  • 2 total stops
  • 33h 59m total
  • United Kingdom to California
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (£11 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from United Kingdom to California.
Search Deals
Price to beat on a one-way flight from United Kingdom to California.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from United Kingdom 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 858,174 searches. Data last updated 23 June 2026.
Use the filters below to find and compare flights from the United Kingdom to California that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 5/9

14:50-20:53

1 stop14h 03m

Ontario

Wed 16/9

13:18-09:40

1 stop12h 22m

£443

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sun 30/8

13:40-21:59

1 stop16h 19m

Ontario

Mon 7/9

13:18-09:40

1 stop12h 22m

£444

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 4/7

13:40-21:57

1 stop16h 17m

Ontario

Thu 9/7

13:18-12:25

1 stop15h 07m

£444

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 22/8

14:50-20:53

1 stop14h 03m

Ontario

Wed 9/9

13:56-11:10

1 stop13h 14m

£444

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 7/7

11:25-20:42

1 stop17h 17m

Ontario

Thu 16/7

13:50-14:10

1 stop16h 20m

£447

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Fri 3/7

11:05-22:51

1 stop19h 46m

Ontario

Fri 10/7

18:39-07:25

1 stop28h 46m

£448

LondonLos Angeles

LGW - LAX

LGWLAX

London Gatwick

Thu 10/9

09:25-16:30

1 stop15h 05m

Los Angeles Los Angeles

Fri 18/9

11:15-17:50

2 stops22h 35m

£478

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Sun 22/11

16:45-13:25

1 stop28h 40m

San Francisco

Sun 29/11

15:40-15:45

1 stop16h 05m

£498

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Wed 14/10

06:45-15:55

1 stop17h 10m

San Francisco

Sun 18/10

17:40-20:45

1 stop19h 05m

£502

LondonLos Angeles

LGW - LAX

LGWLAX

London Gatwick

Fri 3/7

10:25-23:54

2 stops21h 29m

Los Angeles Los Angeles

Mon 6/7

18:25-16:00

1 stop13h 35m

£516

Flights are sorted by cheapest return flights first.

Deals found on 20/6

Showing 1-10 of 60 resultsSorted by cheapest first
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6

Best time to book a flight from United Kingdom to California

Have a flexible travel schedule? Discover the best time to fly to California from United Kingdom with our price prediction graph.
Estimated return 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 the United Kingdom to California

What is the cheapest month to book a flight from United Kingdom to California?

Currently, September is the cheapest month in which you can book a flight from United Kingdom to California (average of £461). Flying from United Kingdom to California in July is currently the most expensive (average of £617). 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.

What is the cheapest time of day to fly from GB to CA?

Find hourly flight availability from United Kingdom to California. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 23 June 2026.

When flying from United Kingdom to California, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from United Kingdom to California

Explore weekly flight availability from United Kingdom to California. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 23 June 2026.

The most flights from GB0 to USCA are scheduled on a Monday (53 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (51 on average).

How far ahead should I book a flight from United Kingdom to California?

To ensure you get the cheapest price possible for a flight from United Kingdom to California, you should look to book at least 80 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 23 June 2026.
Get a feel of what it's like to fly with Virgin Atlantic,United Airlines, andAer Lingus from the United Kingdom to California by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Virgin Atlantic
7.5
Good
690 reviews
Check prices

Boarding

7.7

Food

6.9

Comfort

7.3

Overall

7.5

Entertainment

7.5

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Virgin Atlantic
7.5
Good
690 reviews
Virgin Atlantic
7.5
Good
690 reviews
Check prices

Boarding

7.7

Food

6.9

Comfort

7.3

Overall

7.5

Entertainment

7.5

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
United Airlines
7.4
Good
9,875 reviews
Virgin Atlantic
7.5
Good
690 reviews
Check prices

Boarding

7.7

Food

6.9

Comfort

7.3

Overall

7.5

Entertainment

7.5

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Aer Lingus
7.3
Good
1,620 reviews
Virgin Atlantic
7.5
Good
690 reviews
Check prices

Boarding

7.7

Food

6.9

Comfort

7.3

Overall

7.5

Entertainment

7.5

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Lufthansa
6.8
Okay
8,088 reviews
Virgin Atlantic
7.5
Good
690 reviews
Check prices

Boarding

7.7

Food

6.9

Comfort

7.3

Overall

7.5

Entertainment

7.5

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
British Airways
6.7
Okay
8,064 reviews
Virgin Atlantic
7.5
Good
690 reviews
Check prices

Boarding

7.7

Food

6.9

Comfort

7.3

Overall

7.5

Entertainment

7.5

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to California. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from United Kingdom to California?

    United Airlines, SWISS, and Virgin Atlantic can get you from United Kingdom to California in just under 14h 03m. Your travel time can differ by up to 14h 37m. United Kingdom and California are separated by a distance of 5407 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from United Kingdom to California one-way?

    To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at £172. Norse Atlantic UK flights start at £190 while deals on LEVEL start at £197 one-way.

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

    Yes. In addition to deals on United Kingdom to California flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from United Kingdom to California?

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

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

    Yes. Cheapflights offers flight deals from United Kingdom 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 United Kingdom to California?

    Currently, September is the cheapest month in which you can book a flight from United Kingdom to California (average of £461). Flying from United Kingdom to California in July is currently the most expensive (average of £617). 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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Alternative routes for United Kingdom to California

See prices for flight routes from nearby airports that may be better suited for you.
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Heathrow to Newark flights
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Gatwick to Los Angeles flights
Heathrow to Baltimore flights
Gatwick to Miami flights
Stansted to Los Angeles flights
Heathrow to Atlanta flights
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Stansted to Miami flights
Manchester to Newark flights
Stansted to Orlando flights
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Edinburgh to Newark flights
Manchester to LaGuardia flights
Heathrow to Tampa flights
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London City to Boston flights
Heathrow to Sky Harbor Intl flights
Heathrow to Ontario flights
Birmingham to LaGuardia flights
London City to Orlando flights
Heathrow to George Bush Intcntl flights
Gatwick to San Francisco flights
Stansted to Boston flights
Luton to Miami flights
Gatwick to Dallas/Fort Worth flights

Top 10 airlines flying from United Kingdom to California

Discover the top 10 airlines that operate flights from United Kingdom 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 858,174 searches. Data last updated 23 June 2026.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest£173Average£565FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Air FranceCheapest£240Average£692FlexibilityNo cancel feeOn-time77%
Search Air France flights
Norse Atlantic UKCheapest£259Average£512FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
SWISSCheapest£301Average£553FlexibilityNo cancel feeOn-time79%
Search SWISS flights
DeltaCheapest£325Average£687FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Scandinavian AirlinesCheapest£326Average£522FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Aer LingusCheapest£337Average£720FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Virgin AtlanticCheapest£344Average£630FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
TAP AIR PORTUGALCheapest£357Average£499FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Brussels AirlinesCheapest£358Average£507FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights

Fly with Cheapflights

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

How does Cheapflights help users find flights from United Kingdom to California?

Cheapflights makes it easy to find United Kingdom 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 United Kingdom to California?

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

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

Certainly. Search results for flights to California from United Kingdom shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights offers price alerts on United Kingdom to California flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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