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Cheap flights from London to California from £310

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to California departing on 3/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap return flights

Enter your travel dates to find the best prices.
Virgin Atlantic Logo
14:30 - 22:51
LHR
-
ONT
16h 21m1 stop
Virgin Atlantic Logo
06:00 - 10:00
ONT
-
LHR
20h 00m1 stop
£358Virgin Atlantic
Mon, 26 Jan - Mon, 2 Feb
Virgin Atlantic Logo
12:20 - 22:44
LHR
-
ONT
18h 24m1 stop
Virgin Atlantic Logo
13:10 - 10:00
ONT
-
LHR
12h 50m1 stop
£359Virgin Atlantic
Mon, 9 Feb - Mon, 16 Feb
United Airlines Logo
07:30 - 20:58
LHR
-
ONT
21h 28m2 stops
United Airlines Logo
05:00 - 09:40
ONT
-
LHR
20h 40m1 stop
£364United Airlines
Tue, 10 Feb - Tue, 17 Feb
United Airlines Logo
07:30 - 21:58
LHR
-
ONT
22h 28m2 stops
United Airlines Logo
05:05 - 06:20
ONT
-
LHR
17h 15m2 stops
£368United Airlines
Thu, 22 Jan - Mon, 26 Jan
United Airlines Logo
13:30 - 22:57
LHR
-
ONT
17h 27m2 stops
United Airlines Logo
06:00 - 08:30
ONT
-
LHR
19h 30m2 stops
£369United Airlines
Sat, 7 Mar - Thu, 19 Mar
Iberia Logo
10:05 - 22:48
LHR
-
ONT
20h 43m1 stop
Iberia Logo
10:58 - 11:40
ONT
-
LHR
16h 42m1 stop
£372Iberia
Fri, 23 Jan - Fri, 30 Jan
British Airways Logo
19:05 - 16:22
LHR
-
ONT
28h 17m2 stops
British Airways Logo
10:56 - 08:15
ONT
-
LHR
14h 19m1 stop
£378British Airways
Mon, 9 Mar - Tue, 24 Mar
British Airways Logo
10:05 - 17:22
LHR
-
ONT
15h 17m1 stop
British Airways Logo
16:45 - 13:15
ONT
-
LHR
12h 30m1 stop
£379British Airways
Fri, 23 Jan - Wed, 28 Jan
KLM Logo
10:45 - 18:56
LHR
-
LAS
16h 11m1 stop
KLM Logo
20:45 - 14:40
LAS
-
LHR
9h 55mdirect
£451KLM
Mon, 12 Jan - Tue, 10 Feb
Lufthansa Logo
09:15 - 16:20
LCY
-
LAS
15h 05m1 stop
Lufthansa Logo
19:20 - 18:40
LAS
-
LCY
15h 20m1 stop
£453Lufthansa
Fri, 22 May - Mon, 25 May

British Airways flights from London to California

Our best British Airways deals on London to California flight tickets
British Airways
9 Mar
LHR19:05London Heathrow
28h 17m
2 stops
ONT16:22Ontario
24 Mar
ONT10:56Ontario
14h 19m
1 stop
LHR08:15London Heathrow
£378
Find similar
British Airways
23 Jan
LHR10:05London Heathrow
15h 17m
1 stop
ONT17:22Ontario
28 Jan
ONT16:45Ontario
12h 30m
1 stop
LHR13:15London Heathrow
£379
Find similar
British Airways
23 Jan
LHR10:05London Heathrow
15h 17m
1 stop
ONT17:22Ontario
13 Feb
ONT14:44Ontario
12h 56m
1 stop
LHR11:40London Heathrow
£381
Find similar

Norse Atlantic UK flights from London to California

Our best Norse Atlantic UK deals on London to California flight tickets
Norse Atlantic UK
4 Jun
LGW10:55London Gatwick
11h 15m
LAX14:10Los Angeles
31 Jul
LAX16:30Los Angeles
10h 25m
LGW10:55London Gatwick
£415
Find similar
Norse Atlantic UK
5 Jun
LGW10:55London Gatwick
11h 15m
LAX14:10Los Angeles
31 Jul
LAX16:30Los Angeles
10h 25m
LGW10:55London Gatwick
£426
Find similar
Norse Atlantic UK
24 Jun
LGW10:55London Gatwick
11h 15m
LAX14:10Los Angeles
8 Jul
LAX16:30Los Angeles
10h 25m
LGW10:55London Gatwick
£446
Find similar

momondo Fare Finder

 
Customise 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, momondo users made 279,928 searches. Data last updated 28 December 2025.
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

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 26/1

14:30-22:51

1 stop16h 21m

Ontario

Mon 2/2

06:00-10:00

1 stop20h 00m

£358

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 9/2

12:20-22:44

1 stop18h 24m

Ontario

Mon 16/2

13:10-10:00

1 stop12h 50m

£359

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 10/2

07:30-20:58

2 stops21h 28m

Ontario

Tue 17/2

05:00-09:40

1 stop20h 40m

£364

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 22/1

07:30-21:58

2 stops22h 28m

Ontario

Mon 26/1

05:05-06:20

2 stops17h 15m

£368

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 7/3

13:30-22:57

2 stops17h 27m

Ontario

Thu 19/3

06:00-08:30

2 stops19h 30m

£369

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Fri 23/1

10:05-22:48

1 stop20h 43m

Ontario

Fri 30/1

10:58-11:40

1 stop16h 42m

£372

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 9/3

19:05-16:22

2 stops28h 17m

Ontario

Tue 24/3

10:56-08:15

1 stop14h 19m

£378

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Fri 23/1

10:05-17:22

1 stop15h 17m

Ontario

Wed 28/1

16:45-13:15

1 stop12h 30m

£379

LondonLas Vegas

LHR - LAS

LHRLAS

London Heathrow

Mon 12/1

10:45-18:56

1 stop16h 11m

Las Vegas Harry Reid Intl

Tue 10/2

20:45-14:40

Nonstop9h 55m

£451

LondonLas Vegas

LCY - LAS

LCYLAS

London City

Fri 22/5

09:15-16:20

1 stop15h 05m

Las Vegas Harry Reid Intl

Mon 25/5

19:20-18:40

1 stop15h 20m

£453

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to California from

How to get the cheapest flight ticket from London to California

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to California?

If you are unable to visit California during the month of September, then departing from London during the month February is also very affordable. Most momondo users find prices during this month for around £421.

What is the cheapest day to depart on your flight to California?

The cheapest day to depart on your flight to California is on a Wednesday when prices can be found for as low as £502. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from London because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £573.

What is the cheapest time of day to depart on your flight to California?

The cheapest time of day to fly to California is in the morning when flights can be purchased for as low as £509. In contrast, the most expensive time of day to depart to California is in the afternoon when prices are around £559.

What is the cheapest London to California flight route?

Fly from London Gatwick to Los Angeles for the best London - California flight prices

How far in advance should I book a flight to California?

You are more likely to see cheaper flights to California from London when booking weeks ahead of your departure date. In general, you can expect to find flights to California for around £492 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to California from London for as low as £442 on momondo.

What cabin class options are available on London to California flights?

There are 4 cabin classes available to choose from on London to California flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London to California flights?

No. A direct flight is the cheapest option for a flight between London to California.

Cheap London to California flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to California

Best price found

£318

Fastest flight time

10h 45m

Direct flights

Every day

Airports in California

418 airports
The best one-way flight to California from London in the past 72 hours is £318. The best return flight deal from London to California found on momondo in the last 72 hours is £379.
The fastest flight from London to California takes 10h 45m
Direct flights go from London to California every day.
There are 418 airports in California. From London there are direct flights to Las Vegas Harry Reid Intl (LAS).
Search flight deals

  • When did momondo last update prices for flights from London to California?

    Prices for flights from London to California are refreshed on a daily basis.

  • How many operators does momondo search for flights from London to California?

  • How old do you have to be to fly from London to California?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to California.

  • What documentation or ID do you need to fly to California?

    The required travel and health documents for your California trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at California. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from London to California?

Best airlines flying from London to California

Compare and see reviews for airlines that fly from London to California with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom £236Free CancellationRating
7.9
8,019 reviews
Search Delta flights
IberiaPriceFrom £237Free CancellationRating
7.0
3,059 reviews
Search Iberia flights
FinnairPriceFrom £278Free CancellationRating
7.6
1,339 reviews
Search Finnair flights
SWISSPriceFrom £290Free CancellationRating
7.5
1,828 reviews
Search SWISS flights
Norse Atlantic UKPriceFrom £292Free CancellationRating
7.2
51 reviews
Search Norse Atlantic UK flights
Aer LingusPriceFrom £332Free CancellationRating
7.2
1,412 reviews
Search Aer Lingus flights
Air CanadaPriceFrom £333Free CancellationRating
7.1
10,562 reviews
Search Air Canada flights
Scandinavian AirlinesPriceFrom £335Free CancellationRating
7.4
1,630 reviews
Search Scandinavian Airlines flights
United AirlinesPriceFrom £336Free CancellationRating
7.4
9,113 reviews
Search United Airlines flights
Brussels AirlinesPriceFrom £355Free CancellationRating
7.2
377 reviews
Search Brussels Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from London to California?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to California for you.

Can I find flights from London to California with flexible booking policies on momondo?

Flights from London to California with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from London to California?

Once you have performed a search for London to California flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from London to California right now. Can momondo alert me if prices change?

Price alerts on flights to California from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your California trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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Find better results for your trip to California

Popular Cities in California

Popular flights according to clicks in the last 7 days on momondo
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Flights to Las Vegasfrom £384
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Flights to Dallasfrom £360
Flights to Houstonfrom £401