How long does it take to fly to London?

Flight times from California to London vary, but if you’re flying out of San Francisco and flying into London Heathrow Airport (one of the most popular routes), then the duration is 10h 10m on average. Another popular route from California to London is flying from Los Angeles to London Heathrow Airport, which will take roughly 10h 25m. Keep in mind that layovers or delays could extend your travel time.

Which airlines fly to London?

Virgin Atlantic, British Airways and Iberia are the top three most popular airlines that fly to London from California according to our data. Virgin Atlantic is the first choice among our users, with 41% of people opting to fly with this airline when travelling to London. Keep in mind that there are 14 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

How many flights depart from California to London on average per week?

As of August 2025, there are 729 flights per week flying from California to London. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.

What is the cheapest airline that flies from California to London?

TAP AIR PORTUGAL and Norse Atlantic UK are the most popular carriers operating from California to London

How many flights depart from California to London on average per day?

104 flights are operational daily from California to London as of August 2025. The most popular departure time for this route is 16:00, with 56% of flights per day taking off in the afternoon.

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

Prices for flights from California to London refresh daily.

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

As of August 2025, there are 14 operators available to choose from for flights from California to London.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from California to London.

What documentation or ID do you need to fly to London?

The travel and health documents required for your trip to London can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

£123 Cheap Flights from California to London in 2025

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Find the cheapest flights from California to London

Round-trip

One-way

Last minute

Direct

Cheap return flights

19:25 - 17:50SFO-LGW

14h 25m1 stop

18:40 - 16:30LGW-SFO

29h 50m1 stop

£197SWISS

Find Deal

Mon, 1 Dec - Mon, 8 Dec

16:25 - 10:50LAX-LGW

10h 25mdirect

10:55 - 14:10LGW-LAX

11h 15mdirect

£293Norse Atlantic UK

Find Deal

Sat, 6 Sep - Fri, 26 Sep

16:30 - 10:55LAX-LGW

10h 25mdirect

10:55 - 14:10LGW-LAX

11h 15mdirect

£297Norse Atlantic UK

Find Deal

Wed, 17 Sep - Wed, 24 Sep

16:35 - 21:35SFO-LHR

21h 00m1 stop

06:00 - 14:45LHR-SFO

16h 45m1 stop

£316TAP AIR PORTUGAL

Find Deal

Mon, 3 Nov - Sat, 22 Nov

17:45 - 21:35LAX-LHR

20h 50m1 stop

06:00 - 15:00LHR-LAX

17h 00m1 stop

£318TAP AIR PORTUGAL

Find Deal

Tue, 28 Oct - Tue, 4 Nov

16:40 - 16:00SFO-LHR

15h 20m1 stop

13:55 - 14:35LHR-SFO

32h 40m2 stops

£326Scandinavian Airlines

Find Deal

Fri, 14 Nov - Sun, 16 Nov

20:15 - 18:55LAX-LHR

14h 40m1 stop

12:00 - 18:25LHR-LAX

14h 25m1 stop

£337Aer Lingus

Find Deal

Sun, 5 Oct - Tue, 21 Oct

16:40 - 09:45LAX-LGW

33h 05m1 stop

10:55 - 14:10LGW-LAX

11h 15mdirect

£343

Find Deal

Sat, 27 Sep - Wed, 1 Oct

20:15 - 18:55LAX-LHR

14h 40m1 stop

12:00 - 18:25LHR-LAX

14h 25m1 stop

£346Aer Lingus

Find Deal

Tue, 19 Aug - Thu, 4 Sep

16:40 - 09:45LAX-LGW

33h 05m1 stop

10:55 - 14:10LGW-LAX

11h 15mdirect

£346

Find Deal

Sun, 28 Sep - Wed, 1 Oct

Aer Lingus flights from California to London

Our best Aer Lingus deals on California to London flight tickets

Aer Lingus

5 Oct

LAX20:15Los Angeles

14h 40m

1 stop

LHR18:55London Heathrow

21 Oct

LHR12:00London Heathrow

14h 25m

1 stop

LAX18:25Los Angeles

£337

Find similar

Aer Lingus

19 Aug

LAX20:15Los Angeles

14h 40m

1 stop

LHR18:55London Heathrow

4 Sept

LHR12:00London Heathrow

14h 25m

1 stop

LAX18:25Los Angeles

£346

Find similar

Aer Lingus

12 Nov

LAX20:15Los Angeles

15h 35m

1 stop

LHR19:50London Heathrow

19 Nov

LHR09:50London Heathrow

16h 40m

1 stop

LAX18:30Los Angeles

£348

Find similar

SWISS flights from California to London

Our best SWISS deals on California to London flight tickets

SWISS

1 Dec

SFO19:25San Francisco

14h 25m

1 stop

LGW17:50London Gatwick

8 Dec

LGW18:40London Gatwick

29h 50m

1 stop

SFO16:30San Francisco

£197

Find similar

SWISS

16 Sept

LAX11:25Los Angeles

21h 00m

2 stops

LHR16:25London Heathrow

7 Oct

LHR17:15London Heathrow

31h 15m

2 stops

LAX16:30Los Angeles

£308

Find similar

SWISS

1 Oct

SFO19:30San Francisco

14h 25m

1 stop

LGW17:55London Gatwick

15 Oct

LGW18:35London Gatwick

29h 35m

1 stop

SFO16:10San Francisco

£363

Find similar

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

Mon 1/12

19:25-17:50

1 stop14h 25m

London Gatwick

Mon 8/12

18:40-16:30

1 stop29h 50m

£197

Los AngelesLondon

LAX - LGW

LAXLGW

Los Angeles

Sat 6/9

16:25-10:50

Nonstop10h 25m

London Gatwick

Fri 26/9

10:55-14:10

Nonstop11h 15m

£293

Los AngelesLondon

LAX - LGW

LAXLGW

Los Angeles

Wed 17/9

16:30-10:55

Nonstop10h 25m

London Gatwick

Wed 24/9

10:55-14:10

Nonstop11h 15m

£297

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 3/11

16:35-21:35

1 stop21h 00m

London Heathrow

Sat 22/11

06:00-14:45

1 stop16h 45m

£316

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Tue 28/10

17:45-21:35

1 stop20h 50m

London Heathrow

Tue 4/11

06:00-15:00

1 stop17h 00m

£318

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Fri 14/11

16:40-16:00

1 stop15h 20m

London Heathrow

Sun 16/11

13:55-14:35

2 stops32h 40m

£326

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Sun 5/10

20:15-18:55

1 stop14h 40m

London Heathrow

Tue 21/10

12:00-18:25

1 stop14h 25m

£337

Los AngelesLondon

LAX - LGW

LAXLGW

Los Angeles

Sat 27/9

16:40-09:45

1 stop33h 05m

London Gatwick

Wed 1/10

10:55-14:10

Nonstop11h 15m

£343

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Tue 19/8

20:15-18:55

1 stop14h 40m

London Heathrow

Thu 4/9

12:00-18:25

1 stop14h 25m

£346

Los AngelesLondon

LAX - LGW

LAXLGW

Los Angeles

Sun 28/9

16:40-09:45

1 stop33h 05m

London Gatwick

Wed 1/10

10:55-14:10

Nonstop11h 15m

£346

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from California to London

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

Prices

Airlines

Other information

What is the cheapest month to fly to London?

The cheapest month to fly to London from California is in October. Flight prices, which tend to average around £470, are often lower during this time because this is during the off-season. The month of September is another great option to travel to London, with average flight prices from California averaging around £479.

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

Our data shows that Monday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £528. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from California to London for around £599.

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

The cheapest time of day to fly to London is in the afternoon when flights can be purchased for as low as £529. Flights at midday are often more expensive, with an average ticket price of £699.

What is the cheapest California to London flight route?

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

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

You are more likely to see cheaper flights to London from California when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £586 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from California for as low as £531 on momondo.

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

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

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

Cheap California to London flight deals and tips

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

Best price found	£123
Fastest flight time	10h 20m
Direct flights	Every day
Airports in London	2 airports

The best one-way flight to London from California in the past 72 hours is £123. The best return flight deal from California to London found on momondo in the last 72 hours is £197.

The fastest flight from California to London takes 10h 20m

Direct flights go from California to London every day.

There are 2 airports near London: London Heathrow (LHR), London Gatwick (LGW)

Search flight deals

When did momondo last update prices for flights from California to London?
Prices for flights from California to London refresh daily.
How many operators does momondo search for flights from California to London?
As of August 2025, there are 14 operators available to choose from for flights from California to London.
How old do you have to be to fly from California to London?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from California to London.
What documentation or ID do you need to fly to London?
The travel and health documents required for your trip to London can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from California to London?
momondo data reveals that the most frequently booked plane model on the route from California to London is Boeing 787-9 Dreamliner, representing 23.17% of all bookings. The subsequent popular models are Boeing 777-300ER at 13.81%, Airbus A380-800 at 13.37%, and Boeing 777 at 12.58%.

Best airlines flying from California to London

Compare and see reviews for airlines that fly from California to London with momondo

Airline	Rating	Free Cancellation	Price
Scandinavian Airlines	PriceFrom £307	Free Cancellation	Rating 7.4 1,462 reviews	Search Scandinavian Airlines flights
Lufthansa	PriceFrom £322	Free Cancellation	Rating 6.8 7,287 reviews	Search Lufthansa flights
KLM	PriceFrom £368	Free Cancellation	Rating 7.8 1,381 reviews	Search KLM flights
Norse Atlantic UK	PriceFrom £376	Free Cancellation	Rating 7.2 47 reviews	Search Norse Atlantic UK flights
British Airways	PriceFrom £393	Free Cancellation	Rating 6.6 7,237 reviews	Search British Airways flights
TAP AIR PORTUGAL	PriceFrom £395	Free Cancellation	Rating 7.1 1,942 reviews	Search TAP AIR PORTUGAL flights
Air France	PriceFrom £397	Free Cancellation	Rating 7.5 1,466 reviews	Search Air France flights
Virgin Atlantic	PriceFrom £401	Free Cancellation	Rating 7.4 657 reviews	Search Virgin Atlantic flights
Finnair	PriceFrom £424	Free Cancellation	Rating 7.6 1,319 reviews	Search Finnair flights
United Airlines	PriceFrom £429	Free Cancellation	Rating 7.4 8,916 reviews	Search United Airlines flights

Eastbourne

Milton Keynes

Luton

Slough

Maidstone

Southend-on-Sea

Canterbury

Gatwick

Ipswich

Ilford

Guildford

Colchester

Dartford

Hounslow

Worthing

Dover

Chelmsford

Hayes

Winchester

Bedford

Why use momondo?

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

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

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

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

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

momondo provides multiple filters to help you find the best flight to London from California. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for California to London 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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Cheap flights from California to London 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 London 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.

Big names, great deals

Big names, great deals

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Aer Lingus flights from California to London

Our best Aer Lingus deals on California to London flight tickets

SWISS flights from California to London

Our best SWISS deals on California to London flight tickets

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How to get the cheapest flight ticket from California to London

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 London?

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

Our data shows that Monday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £528. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from California to London for around £599.

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

The cheapest time of day to fly to London is in the afternoon when flights can be purchased for as low as £529. Flights at midday are often more expensive, with an average ticket price of £699.

What is the cheapest California to London flight route?

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

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

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

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

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

What is the cheapest airline that flies from California to London?

TAP AIR PORTUGAL and Norse Atlantic UK are the most popular carriers operating from California to London

Which airlines fly to London?

How many flights depart from California to London on average per day?

104 flights are operational daily from California to London as of August 2025. The most popular departure time for this route is 16:00, with 56% of flights per day taking off in the afternoon.

How many flights depart from California to London on average per week?

As of August 2025, there are 729 flights per week flying from California to London. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.

How long does it take to fly to London?

Cheap California to London flight deals and tips

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

Best price found

Fastest flight time

Direct flights

Airports in London

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

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

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

What documentation or ID do you need to fly to London?

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

Best airlines flying from California to London

Compare and see reviews for airlines that fly from California to London with momondo

Travelling to a place near London?

Why use momondo?

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

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

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

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

An easier way to manage your London 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London