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

On average, it takes 10h 15m to fly from California to London Heathrow Airport if you fly out of San Francisco (the most popular airport in California) and into London Heathrow Airport (the most popular airport in London Heathrow Airport). If you’re flying out of Los Angeles and into London Heathrow Airport, then the flight time is around 10h 20m.

What airlines fly to London Heathrow Airport?

British Airways, United Airlines and Virgin Atlantic are the top three most popular airlines that fly to London Heathrow Airport from California according to our data. British Airways is the first choice among our users, with 41% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 21 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

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

As of March 2026, 89 flights take off from California and land in London Heathrow Airport each day. The most common flight departure time for this route is 6:00PM, with 74% of daily flights taking off in the evening.

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

As of March 2026, there are 628 flights per week flying from California to London Heathrow Airport. The most common day of the week flights depart is Tue, with 14% of flights taking off on this day.

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

United Airlines, TAP AIR PORTUGAL, and WestJet are the most popular carriers operating from California to London Heathrow

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

There are 21 operators available for flights from California to London Heathrow Airport as of March 2026.

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.

$304 Cheap Flights from California to London Heathrow Airport in 2026

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize 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 round-trip flights

Enter your travel dates to find the best prices.

7:55 pm - 10:55 pm

SFO

LHR

19h 00m

1 stop

6:00 am - 4:50 pm

LHR

SFO

18h 50m

1 stop

$629TAP AIR PORTUGAL

jue., abr. 23 - vie., may. 1

7:10 pm - 9:35 pm

LAX

LHR

18h 25m

2 stops

10:20 am - 4:50 pm

LHR

LAX

14h 30m

1 stop

$632Scandinavian Airlines

lun., sep. 14 - mar., sep. 22

7:10 pm - 6:30 pm

LAX

LHR

15h 20m

1 stop

7:30 pm - 4:50 pm

LHR

LAX

29h 20m

1 stop

$633Scandinavian Airlines

dom., abr. 26 - dom., may. 3

6:00 pm - 3:00 pm

SJC

LHR

13h 00m

1 stop

11:15 am - 9:45 pm

LHR

SJC

18h 30m

1 stop

$738Virgin Atlantic

mié., abr. 22 - mar., abr. 28

1:00 pm - 5:40 pm

SMF

LHR

20h 40m

2 stops

7:25 am - 10:55 pm

LHR

SMF

23h 30m

2 stops

$770Lufthansa

vie., ago. 21 - dom., ago. 23

2:12 pm - 8:40 pm

SMF

LHR

22h 28m

2 stops

8:25 pm - 5:34 pm

LHR

SMF

29h 09m

2 stops

$771Lufthansa

vie., ago. 21 - dom., ago. 23

7:05 pm - 12:05 pm

LAS

LHR

33h 00m

1 stop

1:55 pm - 12:55 pm

LHR

LAS

31h 00m

1 stop

$787WestJet

lun., abr. 20 - lun., abr. 27

11:30 am - 10:15 am

SJC

LHR

14h 45m

1 stop

9:55 am - 4:15 pm

LHR

SJC

14h 20m

1 stop

$793Virgin Atlantic

dom., jul. 12 - dom., sep. 27

7:00 am - 6:30 am

SAN

LHR

15h 30m

1 stop

7:25 am - 3:25 pm

LHR

SAN

16h 00m

1 stop

$794Multiple Airlines

mié., sep. 9 - mié., sep. 16

7:05 pm - 12:05 pm

LAS

LHR

33h 00m

1 stop

1:55 pm - 12:44 am

LHR

LAS

18h 49m

2 stops

$811Multiple Airlines

lun., abr. 20 - lun., abr. 27

TAP AIR PORTUGAL flights from California to London Heathrow Airport

Our best TAP AIR PORTUGAL deals on California to London Heathrow Airport flight tickets

TAP AIR PORTUGAL

Apr 23

SFO7:55 pmSan Francisco

19h 00m

1 stop

LHR10:55 pmLondon Heathrow

May 1

LHR6:00 amLondon Heathrow

18h 50m

1 stop

SFO4:50 pmSan Francisco

$629

TAP AIR PORTUGAL

Apr 9

SFO7:55 pmSan Francisco

30h 25m

1 stop

LHR10:20 amLondon Heathrow

Apr 17

LHR8:00 amLondon Heathrow

16h 50m

1 stop

SFO4:50 pmSan Francisco

$634

TAP AIR PORTUGAL

Apr 14

LAX4:45 pmLos Angeles Los Angeles

36h 00m

1 stop

LHR12:45 pmLondon Heathrow

Apr 30

LHR4:35 pmLondon Heathrow

30h 00m

1 stop

LAX2:35 pmLos Angeles Los Angeles

$635

Scandinavian Airlines flights from California to London Heathrow Airport

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

Scandinavian Airlines

Sep 13

SFO4:45 pmSan Francisco

20h 55m

1 stop

LHR9:40 pmLondon Heathrow

Sep 29

LHR7:50 pmLondon Heathrow

26h 50m

2 stops

SFO2:40 pmSan Francisco

$636

Scandinavian Airlines

Sep 13

SFO4:45 pmSan Francisco

20h 50m

2 stops

LHR9:35 pmLondon Heathrow

Sep 29

LHR7:50 pmLondon Heathrow

26h 50m

2 stops

SFO2:40 pmSan Francisco

$637

Scandinavian Airlines

Apr 26

LAX7:10 pmLos Angeles Los Angeles

14h 30m

1 stop

LHR5:40 pmLondon Heathrow

May 4

LHR6:40 amLondon Heathrow

18h 10m

1 stop

LAX4:50 pmLos Angeles Los Angeles

$638

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

Cheapest round-trip

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

jue. 4/23

7:55 pm-10:55 pm

1 stop19h 00m

London Heathrow

vie. 5/1

6:00 am-4:50 pm

1 stop18h 50m

$629

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles Los Angeles

lun. 9/14

7:10 pm-9:35 pm

2 stops18h 25m

London Heathrow

mar. 9/22

10:20 am-4:50 pm

1 stop14h 30m

$632

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles Los Angeles

dom. 4/26

7:10 pm-6:30 pm

1 stop15h 20m

London Heathrow

dom. 5/3

7:30 pm-4:50 pm

1 stop29h 20m

$633

San JoseLondon

SJC - LHR

SJCLHR

San Jose

mié. 4/22

6:00 pm-3:00 pm

1 stop13h 00m

London Heathrow

mar. 4/28

11:15 am-9:45 pm

1 stop18h 30m

$738

SacramentoLondon

SMF - LHR

SMFLHR

Sacramento Intl

vie. 8/21

1:00 pm-5:40 pm

2 stops20h 40m

London Heathrow

dom. 8/23

7:25 am-10:55 pm

2 stops23h 30m

$770

SacramentoLondon

SMF - LHR

SMFLHR

Sacramento Intl

vie. 8/21

2:12 pm-8:40 pm

2 stops22h 28m

London Heathrow

dom. 8/23

8:25 pm-5:34 pm

2 stops29h 09m

$771

Las VegasLondon

LAS - LHR

LASLHR

Las Vegas Harry Reid Intl

lun. 4/20

7:05 pm-12:05 pm

1 stop33h 00m

London Heathrow

lun. 4/27

1:55 pm-12:55 pm

1 stop31h 00m

$787

Quickest round-trip

San JoseLondon

SJC - LHR

SJCLHR

San Jose

dom. 7/12

11:30 am-10:15 am

1 stop14h 45m

London Heathrow

dom. 9/27

9:55 am-4:15 pm

1 stop14h 20m

$793

San DiegoLondon

SAN - LHR

SANLHR

San Diego

mié. 9/9

7:00 am-6:30 am

1 stop15h 30m

London Heathrow

mié. 9/16

7:25 am-3:25 pm

1 stop16h 00m

$794

Las VegasLondon

LAS - LHR

LASLHR

Las Vegas Harry Reid Intl

lun. 4/20

7:05 pm-12:05 pm

1 stop33h 00m

London Heathrow

lun. 4/27

1:55 pm-12:44 am

2 stops18h 49m

$811

Flights are sorted by cheapest round-trip 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?

The month of September is, on average, the cheapest month to fly to London Heathrow Airport from California, with most prices found around $637. If you’re not able to fly to London Heathrow Airport in September, then October is your next best option. Flight prices from California to London Heathrow Airport during October average around $650.

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

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $754. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $851.

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 at noon. momondo users have found flights departing from California to London Heathrow Airport at noon for as low as $744. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive with an average ticket price of $802.

What is the cheapest California to London Heathrow flight route?

Fly from Los Angeles 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 $766 when searching weeks out. 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 $709 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 18% 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	$382
Fastest flight time	9h 55m
Direct flights	Every day

The best one-way flight to London Heathrow Airport from California in the past 72 hours is $382. The best round-trip flight deal from California to London Heathrow Airport found on momondo in the last 72 hours is $749.

The fastest flight from California to London Heathrow Airport takes 9h 55m

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?
There are 21 operators available for flights from California to London Heathrow Airport as of March 2026.
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 22.12% of the total bookings. Other popular models include Airbus A350-1000 with 16.86%, Boeing 777 with 16.44%, and Boeing 777-300ER with 14.41%.

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
JetBlue	PriceFrom $151	Free Cancellation	Rating 7.2 2,909 reviews	Search JetBlue flights
Brussels Airlines	PriceFrom $291	Free Cancellation	Rating 7.2 393 reviews	Search Brussels Airlines flights
SWISS	PriceFrom $300	Free Cancellation	Rating 7.5 1,902 reviews	Search SWISS flights
TAP AIR PORTUGAL	PriceFrom $373	Free Cancellation	Rating 7.1 2,172 reviews	Search TAP AIR PORTUGAL flights
Norse Atlantic UK	PriceFrom $463	Free Cancellation	Rating 7.3 53 reviews	Search Norse Atlantic UK flights
Aer Lingus	PriceFrom $474	Free Cancellation	Rating 7.2 1,481 reviews	Search Aer Lingus flights
Scandinavian Airlines	PriceFrom $480	Free Cancellation	Rating 7.3 1,721 reviews	Search Scandinavian Airlines flights
Austrian Airlines	PriceFrom $484	Free Cancellation	Rating 7.6 902 reviews	Search Austrian Airlines flights
Finnair	PriceFrom $486	Free Cancellation	Rating 7.7 1,374 reviews	Search Finnair flights
Alaska Airlines	PriceFrom $494	Free Cancellation	Rating 7.9 12,095 reviews	Search Alaska Airlines flights

Gatwick

Hounslow

Milton Keynes

Luton

Dover

Slough

Crawley

Stratford-upon-Avon

Wembley

Hayes

Dartford

Croydon

Harrow

Watford

Brentwood

Guildford

Stansted

Cobham

Folkestone

Romford

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?

Yes. momondo enables you to select and highlight flights to London from California with this policy.

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

Once all potential California to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from California and alert you when they change.

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organize 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

mar. 4/21

mar. 4/28

Email me momondo's favorite 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 $424

Flights to London City Airportfrom $617

Flights to London Stansted Airportfrom $436

Flights to London Luton Airportfrom $444

Flights to Glasgow Intl Airportfrom $524

Flights to Belfast Intl Airport

Flights to London Southend Airportfrom $723

Flights to Belfast City Airportfrom $711

Cheap flights from California to London from $304

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 8/2. 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 and deals

Big names and 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 round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

TAP AIR PORTUGAL flights from California to London Heathrow Airport

Our best TAP AIR PORTUGAL deals on California to London Heathrow Airport flight tickets

Scandinavian Airlines flights from California to London Heathrow Airport

Our best Scandinavian Airlines 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?

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?

Can stopping save me money on California to London Heathrow Airport flights?

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

What airlines fly to London Heathrow Airport?

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

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

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

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

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

Traveling to a place near London?

Why use momondo?

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organize 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 favorite 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