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Cheap flights from California to the United Kingdom from £271

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 8/1. 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

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TAP AIR PORTUGAL Logo
16:35 - 09:50
SFO
-
LGW
33h 15m1 stop
TAP AIR PORTUGAL Logo
10:40 - 15:35
LGW
-
SFO
35h 55m1 stop
£447TAP AIR PORTUGAL
Sat, 7 Mar - Sun, 22 Mar
Multiple Airlines Logo
16:40 - 19:30
SFO
-
STN
18h 50m2 stops
Multiple Airlines Logo
11:55 - 14:35
STN
-
SFO
34h 40m2 stops
£447Multiple Airlines
Sun, 15 Feb - Sun, 1 Mar
Multiple Airlines Logo
08:10 - 06:55
SFO
-
LHR
14h 45m1 stop
Multiple Airlines Logo
08:40 - 16:15
LHR
-
SFO
15h 35m1 stop
£447Multiple Airlines
Wed, 29 Apr - Thu, 7 May
Austrian Airlines Logo
08:20 - 06:40
SFO
-
LHR
14h 20m1 stop
Austrian Airlines Logo
07:25 - 19:09
LHR
-
SFO
19h 44m1 stop
£448Austrian Airlines
Wed, 31 Dec - Fri, 9 Jan
SWISS Logo
19:25 - 17:05
SFO
-
LCY
13h 40m1 stop
SWISS Logo
09:15 - 16:30
LCY
-
SFO
15h 15m1 stop
£449SWISS
Mon, 19 Jan - Mon, 26 Jan
SWISS Logo
19:25 - 17:50
SFO
-
LGW
14h 25m1 stop
SWISS Logo
18:40 - 16:30
LGW
-
SFO
29h 50m1 stop
£449SWISS
Mon, 19 Jan - Mon, 26 Jan
Scandinavian Airlines Logo
16:40 - 16:25
SFO
-
LHR
15h 45m2 stops
Scandinavian Airlines Logo
17:30 - 14:35
LHR
-
SFO
53h 05m2 stops
£449Scandinavian Airlines
Thu, 22 Jan - Tue, 3 Feb
Lufthansa Logo
13:35 - 11:15
SFO
-
LHR
13h 40m1 stop
Lufthansa Logo
06:55 - 14:35
LHR
-
SFO
15h 40m1 stop
£451Lufthansa
Wed, 4 Feb - Tue, 5 May
Scandinavian Airlines Logo
16:40 - 21:20
SFO
-
LHR
20h 40m2 stops
Scandinavian Airlines Logo
21:05 - 14:35
LHR
-
SFO
49h 30m2 stops
£452Scandinavian Airlines
Thu, 15 Jan - Tue, 3 Feb
Lufthansa Logo
11:53 - 09:40
LAS
-
LHR
13h 47m1 stop
Lufthansa Logo
11:35 - 17:11
LHR
-
LAS
13h 36m1 stop
£455Lufthansa
Wed, 4 Feb - Wed, 11 Feb

Scandinavian Airlines flights from California to United Kingdom

Our best Scandinavian Airlines deals on California to United Kingdom flight tickets
Scandinavian Airlines
18 Jan
SFO16:40San Francisco
18h 10m
2 stops
LHR18:50London Heathrow
23 Jan
LHR21:05London Heathrow
25h 30m
2 stops
SFO14:35San Francisco
£448
Find similar
Scandinavian Airlines
22 Jan
SFO16:40San Francisco
15h 45m
2 stops
LHR16:25London Heathrow
3 Feb
LHR17:30London Heathrow
53h 05m
2 stops
SFO14:35San Francisco
£449
Find similar
Scandinavian Airlines
15 Jan
SFO16:40San Francisco
20h 40m
2 stops
LHR21:20London Heathrow
3 Feb
LHR21:05London Heathrow
49h 30m
2 stops
SFO14:35San Francisco
£452
Find similar

Lufthansa flights from California to United Kingdom

Our best Lufthansa deals on California to United Kingdom flight tickets
Lufthansa
29 Dec
SFO12:50San Francisco
10h 35m
LHR07:25London Heathrow
13 Jan
LHR11:10London Heathrow
16h 25m
1 stop
SFO19:35San Francisco
£450
Find similar
Lufthansa
4 Feb
SFO07:00San Francisco
15h 20m
1 stop
LHR06:20London Heathrow
5 May
LHR10:50London Heathrow
16h 10m
1 stop
SFO19:00San Francisco
£451
Find similar
Lufthansa
29 Dec
SFO07:25San Francisco
22h 05m
1 stop
LHR13:30London Heathrow
13 Jan
LHR11:10London Heathrow
16h 25m
1 stop
SFO19:35San Francisco
£451
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 22 December 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

Sat 7/3

16:35-09:50

1 stop33h 15m

London Gatwick

Sun 22/3

10:40-15:35

1 stop35h 55m

£447

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Sun 15/2

16:40-19:30

2 stops18h 50m

London Stansted

Sun 1/3

11:55-14:35

2 stops34h 40m

£447

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 29/4

08:10-06:55

1 stop14h 45m

London Heathrow

Thu 7/5

08:40-16:15

1 stop15h 35m

£447

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 31/12

08:20-06:40

1 stop14h 20m

London Heathrow

Fri 9/1

07:25-19:09

1 stop19h 44m

£448

San FranciscoLondon

SFO - LCY

SFOLCY

San Francisco

Mon 19/1

19:25-17:05

1 stop13h 40m

London City

Mon 26/1

09:15-16:30

1 stop15h 15m

£449

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

Mon 19/1

19:25-17:50

1 stop14h 25m

London Gatwick

Mon 26/1

18:40-16:30

1 stop29h 50m

£449

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Thu 22/1

16:40-16:25

2 stops15h 45m

London Heathrow

Tue 3/2

17:30-14:35

2 stops53h 05m

£449

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 4/2

13:35-11:15

1 stop13h 40m

London Heathrow

Tue 5/5

06:55-14:35

1 stop15h 40m

£451

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Thu 15/1

16:40-21:20

2 stops20h 40m

London Heathrow

Tue 3/2

21:05-14:35

2 stops49h 30m

£452

Las VegasLondon

LAS - LHR

LASLHR

Las Vegas Harry Reid Intl

Wed 4/2

11:53-09:40

1 stop13h 47m

London Heathrow

Wed 11/2

11:35-17:11

1 stop13h 36m

£455

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 September. Flight prices, which tend to average around £443, 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 September, then departing from California during the month October is also very affordable. Most momondo users find prices during this month for around £445.

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 £491. 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 £578.

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 £514. Try not to purchase tickets at midday because they tend to be around £645. 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 San Francisco to London Heathrow 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 £578 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 £533 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?

You could potentially save up to 39% on your flight if you consider stops on a California to United Kingdom flight.

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

£288

Fastest flight time

2h 34m

Direct flights

Every day

Airports in United Kingdom

1,286 airports
The best one-way flight to United Kingdom from California in the past 72 hours is £288. The best return flight deal from California to United Kingdom found on momondo in the last 72 hours is £464.
The fastest flight from California to United Kingdom takes 2h 34m
Direct flights go from California to United Kingdom every day.
There are 1,286 airports in United Kingdom. From California there are direct flights to London Heathrow (LHR).
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
TAP AIR PORTUGALPriceFrom £316Free CancellationRating
7.2
2,096 reviews
Search TAP AIR PORTUGAL flights
LufthansaPriceFrom £320Free CancellationRating
6.8
7,646 reviews
Search Lufthansa flights
Scandinavian AirlinesPriceFrom £357Free CancellationRating
7.4
1,617 reviews
Search Scandinavian Airlines flights
KLMPriceFrom £366Free CancellationRating
7.7
1,432 reviews
Search KLM flights
Virgin AtlanticPriceFrom £369Free CancellationRating
7.5
676 reviews
Search Virgin Atlantic flights
Aer LingusPriceFrom £377Free CancellationRating
7.2
1,410 reviews
Search Aer Lingus flights
British AirwaysPriceFrom £388Free CancellationRating
6.7
7,604 reviews
Search British Airways flights
Air FrancePriceFrom £394Free CancellationRating
7.4
1,511 reviews
Search Air France flights
United AirlinesPriceFrom £397Free CancellationRating
7.4
9,102 reviews
Search United Airlines flights
FinnairPriceFrom £406Free CancellationRating
7.6
1,339 reviews
Search Finnair 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.

An easier way to manage your United Kingdom trip

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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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