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Cheap flights from the United Kingdom to California from £347

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 28/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — LAX
8 Jul — 15 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 8 June 2026.

Fri 4/906:55
LHR
-
ONT
2 stops21h 58m
United Airlines
Tue 8/906:00
ONT
-
LHR
2 stops18h 20m
United Airlines
Deal found 6/6£418
Wed 8/706:55
LHR
-
ONT
2 stops37h 52m
United Airlines
Mon 13/713:18
ONT
-
LHR
1 stop15h 07m
United Airlines
Deal found 6/6£420
Fri 20/1109:30
LHR
-
ONT
2 stops21h 36m
United Airlines
Sat 28/1105:00
ONT
-
LHR
1 stop20h 40m
United Airlines
Deal found 6/6£421
Mon 2/1109:30
LHR
-
ONT
2 stops21h 36m
United Airlines
Mon 16/1106:00
ONT
-
LHR
1 stop17h 25m
United Airlines
Deal found 5/6£422
Tue 29/908:00
LHR
-
ONT
2 stops17h 41m
Lufthansa
Fri 9/1006:00
ONT
-
LHR
1 stop21h 35m
Lufthansa
Deal found 7/6£433
Sat 27/613:00
LHR
-
ONT
1 stop17h 50m
Lufthansa
Tue 30/613:50
ONT
-
LHR
1 stop16h 20m
Lufthansa
Deal found 6/6£435
Wed 8/713:40
LHR
-
ONT
1 stop16h 15m
Lufthansa
Mon 13/706:00
ONT
-
LHR
1 stop17h 25m
Lufthansa
Deal found 5/6£436
Sun 14/614:50
LHR
-
ONT
1 stop13h 56m
United Airlines
Sun 28/613:18
ONT
-
LHR
1 stop12h 22m
United Airlines
Deal found 7/6£442
Sat 27/613:00
LHR
-
ONT
1 stop17h 50m
United Airlines
Sun 5/713:18
ONT
-
LHR
1 stop12h 22m
United Airlines
Deal found 6/6£445
Fri 26/613:40
LHR
-
ONT
1 stop16h 15m
United Airlines
Fri 3/713:18
ONT
-
LHR
1 stop15h 07m
United Airlines
Deal found 5/6£445
Fri 12/613:40
LHR
-
ONT
1 stop16h 15m
United Airlines
Sat 27/605:45
ONT
-
LHR
1 stop18h 10m
United Airlines
Deal found 5/6£447
Fri 7/812:25
LHR
-
LAX
1 stop19h 28m
Delta
Sun 23/806:00
LAX
-
LHR
1 stop17h 10m
Delta
Deal found 7/6£500

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 8 June 2026.

Round-trip from

£418

One-way from

£347

Popular in

December

Cheapest in

September

Average price

£502

Good round-trip deal

£528 or less

Good one-way deal

£295 or less
United Airlines
  • United Airlines
  • 4/9-8/9
  • 3 total stops
  • 35h 12m total
  • United Kingdom to California
Search Deals
British Airways
  • British Airways
  • 28/8
  • 1 total stop
  • 15h 15m total
  • United Kingdom to California
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£15 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 8 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

Fri 4/9

06:55-20:53

2 stops21h 58m

Ontario

Tue 8/9

06:00-08:20

2 stops18h 20m

£418

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 4/7

13:40-21:57

1 stop16h 17m

Ontario

Thu 9/7

13:18-09:40

1 stop12h 22m

£442

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 22/6

10:35-17:56

1 stop15h 21m

Ontario

Mon 29/6

13:18-09:40

1 stop12h 22m

£442

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Fri 19/6

16:15-22:37

1 stop14h 22m

Ontario

Mon 22/6

13:18-09:40

1 stop12h 22m

£442

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Thu 13/8

11:45-22:21

1 stop18h 36m

Los Angeles Los Angeles

Sat 22/8

11:35-10:00

1 stop14h 25m

£501

LondonLos Angeles

LGW - LAX

LGWLAX

London Gatwick

Fri 11/9

21:15-14:40

2 stops25h 25m

Los Angeles Los Angeles

Sun 27/9

16:40-09:45

1 stop33h 05m

£506

LondonLos Angeles

LCY - LAX

LCYLAX

London City

Fri 28/8

09:20-14:45

1 stop13h 25m

Los Angeles Los Angeles

Tue 15/9

09:45-09:30

2 stops15h 45m

£509

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 2/7

10:35-17:54

1 stop15h 19m

Ontario

Wed 8/7

13:18-09:40

1 stop12h 22m

£512

LondonLos Angeles

LGW - LAX

LGWLAX

London Gatwick

Sun 30/8

17:00-11:54

2 stops26h 54m

Los Angeles Los Angeles

Thu 10/9

14:05-16:00

2 stops17h 55m

£515

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Thu 6/8

17:45-00:32

1 stop14h 47m

Los Angeles Los Angeles

Mon 24/8

23:15-17:35

Nonstop10h 20m

£516

Flights are sorted by cheapest return flights first.

Deals found on 5/6

Showing 1-10 of 60 resultsSorted by cheapest first
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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 £454). Flying from United Kingdom to California in July is currently the most expensive (average of £615). 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 8 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 8 June 2026.

The most flights from GB0 to USCA are scheduled on a Monday (53 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (53 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 82 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 8 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
689 reviews
Check prices

Comfort

7.3

Entertainment

7.5

Food

6.9

Crew

8.1

Overall

7.5

Boarding

7.7

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
689 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Comfort

7.3

Entertainment

7.5

Food

6.9

Crew

8.1

Overall

7.5

Boarding

7.7

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
9,780 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Comfort

7.3

Entertainment

7.5

Food

6.9

Crew

8.1

Overall

7.5

Boarding

7.7

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
1,600 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Comfort

7.3

Entertainment

7.5

Food

6.9

Crew

8.1

Overall

7.5

Boarding

7.7

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
8,044 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Comfort

7.3

Entertainment

7.5

Food

6.9

Crew

8.1

Overall

7.5

Boarding

7.7

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
8,028 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Comfort

7.3

Entertainment

7.5

Food

6.9

Crew

8.1

Overall

7.5

Boarding

7.7

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, Delta, and TAP AIR PORTUGAL can get you from United Kingdom to California in just under 18h 36m. Your travel time can differ by up to 6h 49m. United Kingdom and California are separated by a distance of 5439 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 £171. Norse Atlantic UK flights start at £183 while deals on LEVEL start at £196 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 £454). Flying from United Kingdom to California in July is currently the most expensive (average of £615). 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

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

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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Gatwick to Miami flights
Stansted to Orlando flights
Stansted to LaGuardia flights
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London City to Miami flights
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Stansted to Miami flights
Heathrow to Baltimore flights
Heathrow to George Bush Intcntl flights
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Manchester to Newark flights
Gatwick to San Francisco flights
London City to San Francisco flights
Edinburgh to Boston flights
Heathrow to Ontario flights
Manchester to LaGuardia flights
Heathrow to Nashville flights
Stansted to San Francisco 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 8 June 2026.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest£171Average£548FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Air FranceCheapest£238Average£653FlexibilityNo cancel feeOn-time77%
Search Air France flights
Norse Atlantic UKCheapest£257Average£495FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
SWISSCheapest£298Average£544FlexibilityNo cancel feeOn-time79%
Search SWISS flights
DeltaCheapest£323Average£677FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Scandinavian AirlinesCheapest£323Average£513FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Brussels AirlinesCheapest£348Average£488FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
TAP AIR PORTUGALCheapest£354Average£493FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Austrian AirlinesCheapest£357Average£496FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
KLMCheapest£362Average£679FlexibilityNo cancel feeOn-time75%
Search KLM 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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