How long does it take to fly to London Heathrow Airport?

If you’re flying from a popular airport in California, such as San Francisco or Los Angeles, and flying into London Heathrow Airport, then you can expect flight times to average 10h 15m and 10h 20m, respectively.

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

As of February 2026, there are 619 flights per week flying from California to London Heathrow Airport. The most common day of the week flights depart is Mon, with 16% of flights taking off on this day.

Which airlines fly to London Heathrow Airport?

Virgin Atlantic, British Airways and United Airlines are the top three most popular airlines that fly to London Heathrow Airport from California according to our data. Virgin Atlantic is the first choice among our users, with 44% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 13 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

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

United Airlines, Air Canada, and Delta are the most popular carriers operating from California to London Heathrow

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

88 flights are operational daily from California to London Heathrow Airport as of February 2026. The most popular departure time for this route is 17:00, with 56% of flights per day taking off in the afternoon.

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

As of February 2026, there are 13 operators available to choose from for flights from California to London Heathrow Airport.

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

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 Heathrow Airport.

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

The travel and health documents required for your trip to London Heathrow Airport 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 Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

£160 Cheap Flights from California to London Heathrow Airport in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from California to London

Round-trip

One-way

Last minute

Direct

Cheap return flights

Enter your travel dates to find the best prices.

09:16 - 09:40

RNO

LHR

16h 24m

1 stop

08:40 - 15:14

LHR

RNO

38h 34m

2 stops

£393United Airlines

Wed, 13 May - Fri, 15 May

05:30 - 10:00

RNO

LHR

20h 30m

2 stops

08:40 - 15:14

LHR

RNO

38h 34m

2 stops

£396United Airlines

Wed, 13 May - Fri, 15 May

05:55 - 07:50

OAK

LHR

17h 55m

2 stops

20:25 - 16:12

LHR

OAK

27h 47m

2 stops

£397Virgin Atlantic

Mon, 16 Feb - Tue, 3 Mar

05:55 - 10:00

OAK

LHR

20h 05m

1 stop

10:45 - 23:51

LHR

OAK

21h 06m

1 stop

£413Virgin Atlantic

Mon, 16 Feb - Tue, 3 Mar

17:30 - 15:50

LAX

LHR

14h 20m

1 stop

07:40 - 16:15

LHR

LAX

15h 35m

1 stop

£435Lufthansa

Wed, 4 Mar - Tue, 10 Mar

19:10 - 17:50

LAX

LHR

14h 40m

1 stop

09:00 - 17:35

LHR

LAX

15h 35m

1 stop

£435SWISS

Wed, 4 Mar - Wed, 11 Mar

16:40 - 19:55

SFO

LHR

19h 15m

2 stops

19:30 - 15:35

LHR

SFO

27h 05m

1 stop

£435Scandinavian Airlines

Sat, 7 Mar - Sun, 15 Mar

19:25 - 17:50

SFO

LHR

14h 25m

1 stop

09:00 - 17:30

LHR

SFO

15h 30m

1 stop

£436SWISS

Tue, 24 Feb - Thu, 19 Mar

19:30 - 17:40

LAX

LHR

14h 10m

1 stop

21:05 - 17:00

LHR

LAX

27h 55m

2 stops

£436Scandinavian Airlines

Wed, 18 Feb - Tue, 3 Mar

22:40 - 21:00

SFO

LHR

15h 20m

1 stop

07:40 - 20:35

LHR

SFO

19h 55m

1 stop

£437Lufthansa

Sun, 15 Mar - Mon, 23 Mar

United Airlines flights from California to London Heathrow Airport

Our best United Airlines deals on California to London Heathrow Airport flight tickets

United Airlines

13 May

RNO09:16Reno

16h 24m

1 stop

LHR09:40London Heathrow

15 May

LHR08:40London Heathrow

38h 34m

2 stops

RNO15:14Reno

£393

United Airlines

13 May

RNO05:30Reno

20h 30m

2 stops

LHR10:00London Heathrow

15 May

LHR08:40London Heathrow

38h 34m

2 stops

RNO15:14Reno

£396

United Airlines

5 Mar

LAX19:00Los Angeles

10h 30m

LHR13:30London Heathrow

16 Mar

LHR07:40London Heathrow

15h 35m

1 stop

LAX16:15Los Angeles

£451

JetBlue flights from California to London Heathrow Airport

Our best JetBlue deals on California to London Heathrow Airport flight tickets

JetBlue

18 Feb

SAN20:34San Diego

26h 21m

1 stop

LHR06:55London Heathrow

23 Feb

LHR09:20London Heathrow

18h 04m

1 stop

SAN19:24San Diego

£475

JetBlue

18 Feb

SAN20:34San Diego

26h 21m

1 stop

LHR06:55London Heathrow

23 Feb

LHR09:20London Heathrow

37h 18m

1 stop

SAN14:38San Diego

£477

JetBlue

18 Feb

SAN20:34San Diego

26h 21m

1 stop

LHR06:55London Heathrow

23 Feb

LHR09:20London Heathrow

33h 12m

1 stop

SAN10:32San Diego

£478

momondo Fare Finder

Use the filters below to find and compare flights from California to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

RenoLondon

RNO - LHR

RNOLHR

Reno

Wed 13/5

09:16-09:40

1 stop16h 24m

London Heathrow

Fri 15/5

08:40-15:14

2 stops38h 34m

£393

RenoLondon

RNO - LHR

RNOLHR

Reno

Wed 13/5

05:30-10:00

2 stops20h 30m

London Heathrow

Fri 15/5

08:40-15:14

2 stops38h 34m

£396

OaklandLondon

OAK - LHR

OAKLHR

Oakland

Mon 16/2

05:55-07:50

2 stops17h 55m

London Heathrow

Tue 3/3

20:25-16:12

2 stops27h 47m

£397

OaklandLondon

OAK - LHR

OAKLHR

Oakland

Mon 16/2

05:55-10:00

1 stop20h 05m

London Heathrow

Tue 3/3

10:45-23:51

1 stop21h 06m

£413

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Wed 4/3

17:30-15:50

1 stop14h 20m

London Heathrow

Tue 10/3

07:40-16:15

1 stop15h 35m

£435

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Wed 4/3

19:10-17:50

1 stop14h 40m

London Heathrow

Wed 11/3

09:00-17:35

1 stop15h 35m

£435

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sat 7/3

16:40-19:55

2 stops19h 15m

London Heathrow

Sun 15/3

19:30-15:35

1 stop27h 05m

£435

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Tue 24/2

19:25-17:50

1 stop14h 25m

London Heathrow

Thu 19/3

09:00-17:30

1 stop15h 30m

£436

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Wed 18/2

19:30-17:40

1 stop14h 10m

London Heathrow

Tue 3/3

21:05-17:00

2 stops27h 55m

£436

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 15/3

22:40-21:00

1 stop15h 20m

London Heathrow

Mon 23/3

07:40-20:35

1 stop19h 55m

£437

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 Heathrow Airport

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 Heathrow Airport?

In general, October is the cheapest month to fly from California to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £480. The month of September is another great option to travel to London Heathrow Airport, with average flight prices from California averaging around £481.

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

On average, the least expensive day to fly to London Heathrow Airport from California is on a Monday. momondo users have found tickets for Monday departures for as low as £495. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Saturday is £589.

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

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the afternoon. momondo users have found flights departing from California to London Heathrow Airport in the afternoon for as low as £529. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying at midday when prices are £630 on average. Flights to London Heathrow Airport from California at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest California to London Heathrow flight route?

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

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

You are more likely to see cheaper flights to London Heathrow Airport from California when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £561 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from California for as low as £518 on momondo.

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

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

You could potentially save up to 34% on your flight if you consider stops on a California to London Heathrow Airport flight.

Cheap California to London Heathrow Airport flight deals and tips

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

Best price found	£262
Fastest flight time	9h 50m
Direct flights	Every day

The best one-way flight to London Heathrow Airport from California in the past 72 hours is £262. The best return flight deal from California to London Heathrow Airport found on momondo in the last 72 hours is £470.

The fastest flight from California to London Heathrow Airport takes 9h 50m

Direct flights go from California to London Heathrow Airport every day.

Search flight deals

When did momondo last update prices for flights from California to London Heathrow Airport?
Prices for flights from California to London Heathrow Airport refresh daily.
How many operators does momondo search for flights from California to London Heathrow Airport?
As of February 2026, there are 13 operators available to choose from for flights from California to London Heathrow Airport.
How old do you have to be to fly from California to London Heathrow Airport?
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 Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The travel and health documents required for your trip to London Heathrow Airport 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 Heathrow Airport. 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 Heathrow Airport?
Based on momondo bookings for flights between California and London Heathrow Airport, the leading plane model is Boeing 787-9 Dreamliner, making up 19.19% of the total bookings. Other popular models include Boeing 777 with 16.98%, Boeing 777-300ER with 16.84%, and Airbus A380-800 with 13.67%.

Best airlines flying from California to London Heathrow Airport

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

Airline	Rating	Free Cancellation	Price
TAP AIR PORTUGAL	PriceFrom £309	Free Cancellation	Rating 7.1 2,134 reviews	Search TAP AIR PORTUGAL flights
KLM	PriceFrom £357	Free Cancellation	Rating 7.7 1,449 reviews	Search KLM flights
Lufthansa	PriceFrom £361	Free Cancellation	Rating 6.8 7,761 reviews	Search Lufthansa flights
Virgin Atlantic	PriceFrom £361	Free Cancellation	Rating 7.5 678 reviews	Search Virgin Atlantic flights
Aer Lingus	PriceFrom £369	Free Cancellation	Rating 7.2 1,445 reviews	Search Aer Lingus flights
British Airways	PriceFrom £379	Free Cancellation	Rating 6.7 7,716 reviews	Search British Airways flights
Air France	PriceFrom £386	Free Cancellation	Rating 7.4 1,532 reviews	Search Air France flights
United Airlines	PriceFrom £388	Free Cancellation	Rating 7.4 9,235 reviews	Search United Airlines flights
Finnair	PriceFrom £396	Free Cancellation	Rating 7.6 1,357 reviews	Search Finnair flights
Iberia	PriceFrom £417	Free Cancellation	Rating 7.0 3,104 reviews	Search Iberia flights

Eastbourne

Milton Keynes

Luton

Gatwick

Maidstone

Slough

Northampton

Stratford-upon-Avon

Swindon

Southend-on-Sea

Canterbury

Ipswich

Ilford

Poole

Guildford

Chelmsford

Hayes

Dover

Swanage

Folkestone

Why use momondo?

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

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 California to London for you.

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

Flights from California to London 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 California to London?

Once you have performed a search for California to London 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 California to London right now. Can momondo alert me if prices change?

If you are not ready to book a flight from California to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

An easier way to manage your London Heathrow Airport 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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Sat 7/3

Sat 14/3

Email me momondo's favourite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London

Popular cities

Other flights from California

Other flights to London

Airlines

Cabin classes

Complete your trip

Feeling lucky

Popular Cities in the United Kingdom

Flights to London Gatwick Airportfrom £37

Flights to London Stansted Airportfrom £31

Flights to London City Airportfrom £138

Flights to London Luton Airportfrom £31

Flights to London Southend Airportfrom £121

Flights to Belfast Intl Airportfrom £29

Flights to Glasgow Intl Airportfrom £30

Flights to Belfast City Airportfrom £33

Flights to Glasgow Prestwick Airportfrom £110

Flights to Lerwick Sumburgh Airport

Cheap flights from California to London from £160

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 3/5. 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

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from California to London

Cheap return flights

Cheap one-way flights

Cheap last-minute flights

Cheap direct flights

United Airlines flights from California to London Heathrow Airport

Our best United Airlines deals on California to London Heathrow Airport flight tickets

JetBlue flights from California to London Heathrow Airport

Our best JetBlue deals on California to London Heathrow Airport flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from California to London Heathrow Airport that are best for you.

See travel insights to London from

How to get the cheapest flight ticket from California to London Heathrow Airport

What is the cheapest month to fly to London Heathrow Airport?

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

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

What is the cheapest California to London Heathrow flight route?

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

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

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

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

You could potentially save up to 34% on your flight if you consider stops on a California to London Heathrow Airport flight.

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

United Airlines, Air Canada, and Delta are the most popular carriers operating from California to London Heathrow

Which airlines fly to London Heathrow Airport?

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

88 flights are operational daily from California to London Heathrow Airport as of February 2026. The most popular departure time for this route is 17:00, with 56% of flights per day taking off in the afternoon.

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

As of February 2026, there are 619 flights per week flying from California to London Heathrow Airport. The most common day of the week flights depart is Mon, with 16% of flights taking off on this day.

How long does it take to fly to London Heathrow Airport?

If you’re flying from a popular airport in California, such as San Francisco or Los Angeles, and flying into London Heathrow Airport, then you can expect flight times to average 10h 15m and 10h 20m, respectively.

Cheap California to London Heathrow Airport flight deals and tips

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

Best price found

Fastest flight time

Direct flights

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

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

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

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

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

Best airlines flying from California to London Heathrow Airport

Compare and see reviews for airlines that fly from California to London Heathrow Airport 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 Heathrow Airport 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 London

Popular Cities in the United Kingdom

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

California flight routes

According to popular flight searches on momondo this year

London Heathrow Airport flight routes

According to popular flight searches on momondo this year

Fly your favourite airline to London

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to London

List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

Complete your trip to London

Explore popular destinations other users love

According to popular flight searches on momondo this year