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Cheap flights from the United Kingdom to California from £321

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 22/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — LAX
21 Feb — 28 Feb1
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 22 January 2026.

Sun 1/306:30
LHR
-
ONT
2 stops38h 08m
United Airlines
Sun 15/306:15
ONT
-
LHR
1 stop18h 10m
United Airlines
Deal found 21/1£346
Sat 7/311:30
LHR
-
ONT
2 stops19h 27m
United Airlines
Sat 14/313:40
ONT
-
LHR
1 stop34h 45m
United Airlines
Deal found 21/1£347
Thu 19/306:30
LHR
-
LAX
1 stop20h 00m
British Airways
Wed 25/315:38
LAX
-
LHR
1 stop13h 37m
British Airways
Deal found 21/1£355
Wed 28/118:40
LGW
-
LAX
1 stop29h 55m
SWISS
Mon 9/219:10
LAX
-
LGW
1 stop14h 40m
SWISS
Deal found 21/1£355
Sat 5/907:25
LHR
-
LAX
1 stop15h 50m
United Airlines
Sat 19/918:35
LAX
-
LHR
2 stops31h 25m
United Airlines
Deal found 21/1£356
Mon 13/412:20
LGW
-
LAX
2 stops34h 00m
Finnair
Tue 21/406:00
LAX
-
LGW
2 stops18h 40m
Finnair
Deal found 21/1£356
Wed 28/113:25
LHR
-
LAX
2 stops35h 55m
Air Canada
Sat 7/206:30
LAX
-
LHR
1 stop21h 20m
Air Canada
Deal found 21/1£357
Tue 21/418:35
LGW
-
LAX
1 stop29h 55m
SWISS
Mon 4/519:35
LAX
-
LGW
1 stop14h 15m
SWISS
Deal found 21/1£357
Mon 2/206:35
LHR
-
LAX
1 stop16h 40m
Multiple Airlines
Fri 13/222:50
LAX
-
LHR
2 stops24h 20m
Multiple Airlines
Deal found 21/1£357
Wed 11/218:40
LGW
-
LAX
1 stop29h 55m
SWISS
Wed 18/219:10
LAX
-
LGW
1 stop14h 40m
SWISS
Deal found 20/1£357
Mon 27/409:30
LHR
-
ONT
2 stops20h 20m
United Airlines
Sat 9/506:00
ONT
-
LHR
2 stops19h 40m
United Airlines
Deal found 20/1£358
Thu 12/209:15
LCY
-
LAX
1 stop15h 20m
SWISS
Mon 11/519:35
LAX
-
LCY
1 stop13h 55m
SWISS
Deal found 20/1£358

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 22 January 2026.

Round-trip from

£346

One-way from

£321

Popular in

December

Cheapest in

September

Average price

£442

Good round-trip deal

£378 or less

Good one-way deal

£321 or less
United Airlines
  • United Airlines
  • 1/3-15/3
  • 3 total stops
  • 56h 18m total
  • United Kingdom to California
Search Deals
22/4
  • 22/4
  • 3 total stops
  • 45h 37m total
  • United Kingdom to California
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£14 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 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 22 January 2026.
Use the filters below to find and compare flights from the United Kingdom to California that are best for you.

Fly from

United Kingdom

Fly to

California

Route

Depart

Return

Price

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sun 1/3

06:30-12:38

2 stops38h 08m

Ontario

Sun 15/3

06:15-07:25

1 stop18h 10m

£346

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 27/4

09:30-21:50

2 stops20h 20m

Ontario

Sat 9/5

06:00-12:20

2 stops22h 20m

£359

LondonLos Angeles

LCY - LAX

LCYLAX

London City

Thu 12/3

09:15-17:35

1 stop15h 20m

Los Angeles

Mon 16/3

20:10-17:05

1 stop13h 55m

£360

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Fri 27/2

11:50-15:20

Nonstop11h 30m

Los Angeles

Thu 12/3

22:00-15:30

Nonstop10h 30m

£364

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Mon 23/2

11:50-15:20

Nonstop11h 30m

Los Angeles

Fri 1/5

18:05-12:45

Nonstop10h 40m

£364

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Mon 23/2

15:20-18:45

Nonstop11h 25m

Los Angeles

Sun 15/3

20:00-13:30

Nonstop10h 30m

£364

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Mon 23/2

15:20-18:45

Nonstop11h 25m

Los Angeles

Mon 16/3

20:00-13:30

Nonstop10h 30m

£364

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Tue 24/2

15:20-18:45

Nonstop11h 25m

Los Angeles

Wed 18/3

20:00-13:30

Nonstop10h 30m

£364

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Mon 23/2

15:20-18:45

Nonstop11h 25m

Los Angeles

Tue 17/3

20:00-13:30

Nonstop10h 30m

£364

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Thu 26/2

11:50-15:20

Nonstop11h 30m

Los Angeles

Tue 10/3

20:30-14:00

Nonstop10h 30m

£365

Flights are sorted by cheapest return flights first.

Deals found on 21/1

Showing 1-10 of 60 results
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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 £238). Flying from United Kingdom to California in July is currently the most expensive (average of £395). 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 22 January 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 22 January 2026.

The most flights from GB0 to USCA are scheduled on a Monday (44 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (38 on average).

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 22 January 2026.
Get a feel of what it's like to fly with KLM, Virgin Atlantic, andUnited Airlines 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.
KLM
7.7
Good
1,442 reviews
Check prices

Overall

7.7

Crew

8.4

Food

7.3

Comfort

7.6

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
KLM
7.7
Good
1,442 reviews
KLM
7.7
Good
1,442 reviews
Check prices

Overall

7.7

Crew

8.4

Food

7.3

Comfort

7.6

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Virgin Atlantic
7.5
Good
678 reviews
KLM
7.7
Good
1,442 reviews
Check prices

Overall

7.7

Crew

8.4

Food

7.3

Comfort

7.6

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
United Airlines
7.4
Good
9,190 reviews
KLM
7.7
Good
1,442 reviews
Check prices

Overall

7.7

Crew

8.4

Food

7.3

Comfort

7.6

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Lufthansa
6.8
Okay
7,738 reviews
KLM
7.7
Good
1,442 reviews
Check prices

Overall

7.7

Crew

8.4

Food

7.3

Comfort

7.6

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
British Airways
6.7
Okay
7,689 reviews
KLM
7.7
Good
1,442 reviews
Check prices

Overall

7.7

Crew

8.4

Food

7.3

Comfort

7.6

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.

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 British Airways can get you from United Kingdom to California in just under 11h 30m. Your travel time can differ by up to 26h 38m. 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 Norse Atlantic UK, which is currently one of the cheapest options available, starting at £163. Vueling flights start at £196 while deals on TAP AIR PORTUGAL start at £201 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 £238). Flying from United Kingdom to California in July is currently the most expensive (average of £395). 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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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 22 January 2026.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest£182Average£573FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Air FranceCheapest£236Average£645FlexibilityNo cancel feeOn-time77%
Search Air France flights
DeltaCheapest£237Average£631FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
SWISSCheapest£277Average£524FlexibilityNo cancel feeOn-time79%
Search SWISS flights
FinnairCheapest£279Average£542FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Norse Atlantic UKCheapest£282Average£506FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
Brussels AirlinesCheapest£334Average£478FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
Air CanadaCheapest£335Average£570FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest£338Average£586FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Austrian AirlinesCheapest£353Average£495FlexibilityNo cancel feeOn-time78%
Search Austrian 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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