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Cheap flights from California to the United Kingdom from £123

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from California to the United Kingdom departing on 30/9. 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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Cheap return flights

SWISS Logo
19:25 - 17:50SFO-LGW
14h 25m1 stop
SWISS Logo
18:40 - 16:30LGW-SFO
29h 50m1 stop
£197SWISS
Find Deal
man., 1 dec. - man., 8 dec.
Norse Atlantic UK Logo
16:25 - 10:50LAX-LGW
10h 25mdirect
Norse Atlantic UK Logo
09:50 - 13:05LGW-LAX
11h 15mdirect
£302Norse Atlantic UK
Find Deal
man., 8 sep. - man., 22 sep.
TAP AIR PORTUGAL Logo
16:35 - 21:35SFO-LHR
21h 00m1 stop
TAP AIR PORTUGAL Logo
06:00 - 14:45LHR-SFO
16h 45m1 stop
£315TAP AIR PORTUGAL
Find Deal
man., 3 nov. - lør., 22 nov.
TAP AIR PORTUGAL Logo
16:45 - 22:40LAX-LHR
21h 55m1 stop
TAP AIR PORTUGAL Logo
13:40 - 15:00LHR-LAX
33h 20m1 stop
£318TAP AIR PORTUGAL
Find Deal
lør., 15 nov. - man., 1 dec.
Logo
16:40 - 09:45LAX-LGW
33h 05m1 stop
Logo
10:55 - 14:10LGW-LAX
11h 15mdirect
£334
Find Deal
søn., 21 sep. - fre., 26 sep.
Aer Lingus Logo
20:15 - 18:55LAX-LHR
14h 40m1 stop
Aer Lingus Logo
12:00 - 18:25LHR-LAX
14h 25m1 stop
£343Aer Lingus
Find Deal
man., 13 okt. - ons., 22 okt.
Aer Lingus Logo
20:15 - 18:55LAX-LHR
14h 40m1 stop
Aer Lingus Logo
12:00 - 18:25LHR-LAX
14h 25m1 stop
£345Aer Lingus
Find Deal
tir., 19 aug. - tor., 4 sep.
Logo
16:40 - 09:45LAX-LGW
33h 05m1 stop
Logo
10:55 - 14:10LGW-LAX
11h 15mdirect
£349
Find Deal
tir., 16 sep. - fre., 26 sep.
Virgin Atlantic Logo
22:50 - 17:15LAX-LHR
10h 25mdirect
Virgin Atlantic Logo
06:30 - 11:50LHR-LAX
13h 20m1 stop
£351Virgin Atlantic
Find Deal
man., 8 sep. - ons., 24 sep.
Virgin Atlantic Logo
13:05 - 11:25SAN-LHR
14h 20m1 stop
Virgin Atlantic Logo
11:20 - 19:27LHR-SAN
16h 07m1 stop
£357Virgin Atlantic
Find Deal
man., 8 sep. - ons., 24 sep.

American Airlines flights from California to United Kingdom

Our best American Airlines deals on California to United Kingdom flight tickets
American Airlines
19 Aug
LAX17:05Los Angeles
10h 30m
LHR11:35London Heathrow
4 Sept
LHR10:20London Heathrow
14h 45m
1 stop
LAX17:05Los Angeles
£364
Find similar
American Airlines
8 Oct
SFO09:16San Francisco
17h 24m
2 stops
LGW10:40London Gatwick
22 Oct
LGW15:05London Gatwick
26h 16m
1 stop
SFO09:21San Francisco
£368
Find similar

British Airways flights from California to United Kingdom

Our best British Airways deals on California to United Kingdom flight tickets
British Airways
6 Oct
SFO22:53San Francisco
25h 17m
1 stop
LGW08:10London Gatwick
14 Oct
LGW15:05London Gatwick
16h 23m
1 stop
SFO23:28San Francisco
£364
Find similar
British Airways
1 Oct
LAX13:25Los Angeles
10h 35m
LHR08:00London Heathrow
31 Oct
LHR16:55London Heathrow
11h 20m
LAX21:15Los Angeles
£369
Find similar
British Airways
23 Sept
SFO19:20San Francisco
10h 25m
LHR13:45London Heathrow
3 Oct
LHR10:45London Heathrow
11h 05m
SFO13:50San Francisco
£370
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from California to United Kingdom 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 7 august 2025.
Use the filters below to find and compare flights from California to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

man. 1/12

19:25-17:50

1 stop14h 25m

London Gatwick

man. 8/12

18:40-16:30

1 stop29h 50m

£197

Los AngelesLondon

LAX - LGW

LAXLGW

Los Angeles

man. 8/9

16:25-10:50

Nonstop10h 25m

London Gatwick

man. 22/9

09:50-13:05

Nonstop11h 15m

£302

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

man. 3/11

16:35-21:35

1 stop21h 00m

London Heathrow

lør. 22/11

06:00-14:45

1 stop16h 45m

£315

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

lør. 15/11

16:45-22:40

1 stop21h 55m

London Heathrow

man. 1/12

13:40-15:00

1 stop33h 20m

£318

Los AngelesLondon

LAX - LGW

LAXLGW

Los Angeles

søn. 21/9

16:40-09:45

1 stop33h 05m

London Gatwick

fre. 26/9

10:55-14:10

Nonstop11h 15m

£334

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

man. 13/10

20:15-18:55

1 stop14h 40m

London Heathrow

ons. 22/10

12:00-18:25

1 stop14h 25m

£343

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

tir. 19/8

20:15-18:55

1 stop14h 40m

London Heathrow

tor. 4/9

12:00-18:25

1 stop14h 25m

£345

Los AngelesLondon

LAX - LGW

LAXLGW

Los Angeles

tir. 16/9

16:40-09:45

1 stop33h 05m

London Gatwick

fre. 26/9

10:55-14:10

Nonstop11h 15m

£349

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

man. 8/9

22:50-17:15

Nonstop10h 25m

London Heathrow

ons. 24/9

06:30-11:50

1 stop13h 20m

£351

San DiegoLondon

SAN - LHR

SANLHR

San Diego

man. 8/9

13:05-11:25

1 stop14h 20m

London Heathrow

ons. 24/9

11:20-19:27

1 stop16h 07m

£357

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to the United Kingdom from

How to get the cheapest flight ticket from California to United Kingdom

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 United Kingdom?

The cheapest month to fly to United Kingdom from California is in October. Flight prices, which tend to average around £469, are often lower during this time because this is during the off-season. If you are unable to visit United Kingdom during the month of October, then departing from California during the month September is also very affordable. Most momondo users find prices during this month for around £477.

What is the cheapest day to depart on your flight to United Kingdom?

The cheapest day to depart from California to United Kingdom is on a Monday. Travellers who choose to depart for United Kingdom on a Monday will often find tickets for as low as £526. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from California to United Kingdom for around £597.

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

The cheapest time of day to fly to United Kingdom is in the afternoon when flights can be purchased for as low as £531. Try not to purchase tickets at midday because they tend to be around £697. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest California to United Kingdom flight route?

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

How far in advance should I book a flight to United Kingdom?

You are more likely to see cheaper flights to United Kingdom from California when booking weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around £584 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United Kingdom from California for as low as £530 on momondo.

What cabin class options are available on California to United Kingdom flights?

There are 4 cabin classes available to choose from on California to United Kingdom 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 California to United Kingdom flights?

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

Cheap California to United Kingdom flight deals and tips

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

Best price found

£123

Fastest flight time

10h 15m

Direct flights

Every day

Airports in United Kingdom

2 airports
The best one-way flight to United Kingdom from California in the past 72 hours is £123. The best return flight deal from California to United Kingdom found on momondo in the last 72 hours is £197.
The fastest flight from California to United Kingdom takes 10h 15m
Direct flights go from California to United Kingdom every day.
There are 2 airports near United Kingdom: London Heathrow (LHR), London Gatwick (LGW)
Search flight deals

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

    Prices for flights from California to United Kingdom refresh daily.

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

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

    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 California to United Kingdom.

  • What documentation or ID do you need to fly to United Kingdom?

    The required travel and health documents for your United Kingdom 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 United Kingdom. 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 California to United Kingdom?

Best airlines flying from California to United Kingdom

Compare and see reviews for airlines that fly from California to United Kingdom with momondo
Airline
Rating
Free Cancellation
Price
Scandinavian AirlinesPriceFrom £306Free CancellationRating
7.4
1,463 reviews
Search Scandinavian Airlines flights
LufthansaPriceFrom £321Free CancellationRating
6.8
7,289 reviews
Search Lufthansa flights
KLMPriceFrom £367Free CancellationRating
7.8
1,381 reviews
Search KLM flights
Norse Atlantic UKPriceFrom £375Free CancellationRating
7.2
47 reviews
Search Norse Atlantic UK flights
British AirwaysPriceFrom £392Free CancellationRating
6.6
7,245 reviews
Search British Airways flights
TAP AIR PORTUGALPriceFrom £394Free CancellationRating
7.1
1,942 reviews
Search TAP AIR PORTUGAL flights
Air FrancePriceFrom £396Free CancellationRating
7.4
1,465 reviews
Search Air France flights
Virgin AtlanticPriceFrom £400Free CancellationRating
7.4
657 reviews
Search Virgin Atlantic flights
FinnairPriceFrom £423Free CancellationRating
7.6
1,319 reviews
Search Finnair flights
United AirlinesPriceFrom £428Free CancellationRating
7.4
8,917 reviews
Search United Airlines flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from California to United Kingdom. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for California to United Kingdom flights to just show those with flexible booking policies.

How can momondo help me find flights from California to United Kingdom?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from California to United Kingdom.

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

Yes. momondo can track prices for California to United Kingdom flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Find better results for your trip to the United Kingdom

Popular Cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo
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