How long is the flight from London Heathrow Airport to California?

For as low as £419, United Airlines can have you in California from London Heathrow Airport in 18h 23m. London Heathrow Airport and California are separated by a distance of 5438 mi. This flight may include one or multiple stops.

What are the cheapest airlines to fly from London Heathrow Airport to California one-way?

One-way options have recently been found by users for as low as £169 on WestJet. Other airlines that offer cheap prices include TAP AIR PORTUGAL from £294 and Virgin Atlantic from £298 one-way.

In terms of precipitation, rainfall in California ranges from 0.0 - 87.0 inches per month. February is typically the wettest month, when rainfall can reach 87.0 mm. July is typically the driest time to visit California when rainfall is around 0.0 mm.

If weather is an important factor for your trip to California, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 14.0 C).

What are the most popular routes from London Heathrow Airport to California?

When deciding which route to take from London Heathrow Airport to California consider London Heathrow - Los Angeles Los Angeles, London Heathrow - Las Vegas Harry Reid Intl or London Heathrow - San Francisco as they are the most popular.

What are the cheapest flights from London Heathrow Airport to California?

Looking for the cheapest flight from London Heathrow Airport to California? While on average our users pay £2,315, our data indicates the cheapest price to be £324. The most popular route (London Heathrow - Los Angeles Los Angeles), is priced around £310.

What are the most reliable airlines from London Heathrow Airport to California?

Before booking your flight to California from London Heathrow Airport, check out the most reliable airlines to get you to your destination on time: SriLankan Airlines (95%), Malaysia Airlines (92%), Fiji Airways( 89%).

What are the most popular airlines that fly from London Heathrow Airport to California?

Virgin Atlantic, British Airways and Lufthansa are the most popular airlines when flying from London Heathrow Airport to California.

Can I find deals for flights from Heathrow to California that include hotel bookings?

Yes. In addition to deals on Heathrow to California flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Heathrow to California?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to California.

Can I find deals for business class flights from Heathrow to California?

Yes. Cheapflights offers flight deals from Heathrow to California by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£346+ Cheap Flights from London Heathrow Airport to California

Cheap flight deals from Heathrow to California

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from Heathrow to California
Explore the most affordable flight options available from Heathrow to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 September 2026.

Wed 14/1008:40 -

2 stops35h 38m

Wed 21/1013:15 -

1 stop16h 05m

Deal found 3/9£373

Thu 15/1008:45 -

2 stops35h 33m

Thu 22/1013:15 -

1 stop16h 05m

Deal found 2/9£374

Wed 25/1109:00 -

2 stops19h 02m

Sun 6/1216:03 -

1 stop31h 22m

Deal found 3/9£377

Fri 23/1008:40 -

2 stops20h 11m

Fri 30/1006:50 -

2 stops16h 50m

Deal found 3/9£377

Wed 4/1109:00 -

2 stops19h 15m

Wed 11/1106:00 -

1 stop17h 40m

Deal found 2/9£378

Fri 23/1008:40 -

2 stops20h 11m

Sun 1/1118:30 -

1 stop31h 10m

Deal found 2/9£378

Wed 16/1206:00 -

2 stops23h 59m

Fri 8/113:56 -

2 stops19h 54m

Deal found 5/9£379

Mon 19/1006:55 -

2 stops40h 27m

Sun 25/1006:00 -

1 stop22h 15m

Deal found 3/9£381

Thu 5/1106:35 -

2 stops35h 25m

Mon 9/1116:05 -

1 stop33h 35m

Deal found 3/9£381

Thu 15/1007:30 -

2 stops21h 01m

Tue 20/1011:10 -

2 stops17h 50m

Deal found 4/9£382

Mon 21/907:30 -

2 stops19h 17m

Thu 1/1021:00 -

1 stop26h 15m

Deal found 3/9£382

Mon 19/1007:30 -

2 stops20h 18m

Mon 26/1009:39 -

2 stops20h 51m

Deal found 3/9£382

Best flights from Heathrow to California
Discover carefully curated flight deals from Heathrow to California that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 7 September 2026.

Fri 23/1008:40 -

2 stops20h 11m

Sun 1/1118:30 -

1 stop31h 10m

Deal found 2/9£378

Tue 22/911:15 -

2 stops18h 23m

Sat 26/913:04 -

2 stops34h 11m

Deal found 7/9£419

Tue 27/1012:20 -

1 stop17h 10m

Thu 24/1211:40 -

1 stop16h 00m

Deal found 3/9£422

Thu 15/1017:00 -

1 stop26h 25m

Mon 19/1007:02 -

1 stop24h 03m

Deal found 6/9£428

Thu 1/1008:20 -

Nonstop11h 25m

Tue 6/1009:00 -

1 stop16h 05m

Deal found 6/9£445

Sat 10/1014:30 -

1 stop15h 38m

Sat 17/1012:57 -

1 stop16h 18m

Deal found 5/9£476

Thu 24/910:50 -

2 stops32h 03m

Wed 7/1014:41 -

1 stop15h 44m

Deal found 6/9£478

Mon 21/907:00 -

2 stops17h 15m

Mon 28/919:35 -

2 stops17h 55m

Deal found 7/9£504

Wed 7/1006:40 -

3 stops23h 28m

Mon 19/1011:41 -

2 stops25h 59m

Deal found 6/9£592

Mon 19/1006:55 -

2 stops18h 41m

Sun 25/1013:35 -

1 stop14h 40m

Deal found 2/9£382

Sun 1/1106:00 -

3 stops36h 31m

Mon 16/1111:41 -

2 stops25h 54m

Deal found 6/9£809

Mon 19/1007:30 -

2 stops20h 18m

Mon 26/1009:39 -

2 stops20h 51m

Deal found 3/9£382

Fri 2/1006:30 -

2 stops18h 52m

Mon 12/1014:03 -

2 stops15h 47m

Deal found 4/9£423

Wed 7/1010:55 -

1 stop18h 49m

Tue 13/1007:00 -

1 stop43h 00m

Deal found 2/9£423

Thu 28/114:45 -

1 stop31h 11m

Mon 1/207:00 -

1 stop21h 20m

Deal found 6/9£428

Wed 7/1013:05 -

2 stops28h 13m

Thu 15/1013:10 -

2 stops23h 10m

Deal found 5/9£910

Tue 23/216:40 -

1 stop16h 03m

Thu 4/317:25 -

Nonstop10h 25m

Deal found 5/9£456

Wed 11/1109:30 -

2 stops20h 20m

Sun 15/1107:45 -

1 stop15h 40m

Deal found 2/9£382

Sat 10/1010:55 -

1 stop18h 49m

Sat 17/1007:00 -

1 stop19h 00m

Deal found 5/9£423

Wed 30/917:00 -

1 stop14h 37m

Fri 9/1015:59 -

1 stop15h 06m

Deal found 6/9£428

Tue 22/911:30 -

2 stops31h 23m

Wed 7/1014:41 -

1 stop15h 44m

Deal found 6/9£478

Wed 21/1007:30 -

2 stops20h 38m

Wed 28/1011:12 -

1 stop13h 13m

Deal found 6/9£382

Wed 21/1017:00 -

1 stop13h 55m

Wed 28/1019:53 -

1 stop33h 27m

Deal found 6/9£428

Fri 30/1017:30 -

Nonstop11h 10m

Thu 24/1206:00 -

1 stop17h 05m

Deal found 3/9£438

Thu 17/1209:00 -

1 stop15h 35m

Mon 4/119:10 -

1 stop16h 05m

Deal found 6/9£536

Sat 26/916:25 -

1 stop26h 28m

Sat 3/1014:36 -

1 stop31h 44m

Deal found 5/9£508

Tue 26/109:00 -

2 stops21h 08m

Sat 30/111:11 -

1 stop16h 04m

Deal found 4/9£385

Thu 15/1017:00 -

1 stop24h 41m

Mon 19/1006:17 -

1 stop24h 48m

Deal found 1/9£428

Fri 9/1007:05 -

3 stops19h 43m

Sat 17/1006:30 -

2 stops27h 10m

Deal found 4/9£594

Fri 6/1106:20 -

2 stops23h 38m

Fri 13/1105:55 -

1 stop20h 05m

Deal found 5/9£458

Find flight deals from Heathrow to California

Round-trip from	£373
One-way from	£346
Popular in	December
Cheapest in	February
Average price	£450
Good round-trip deal	£456 or less
Good one-way deal	£412 or less

Air Canada
14/10-21/10
3 total stops
51h 43m total
London to California

Search Deals

British Airways
15/12-31/12
Nonstop
11h 30m total
London to California

Search Deals

Highest demand for flights based on searches. 1% potential increase in price (£6 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (£5 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Price to beat on a round-trip flight from London Heathrow to California.

Search Deals

Price to beat on a one-way flight from London Heathrow to California.

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonLos Angeles

LHR London Heathrow - LAX Los Angeles Los Angeles

LHRLAX

London Heathrow

Wed 16/12

11:50-15:20

Nonstop11h 30m

Los Angeles Los Angeles

Wed 31/12

00:00-09:00

Nonstop0h 00m

£346

LondonLos Angeles

LHR London Heathrow - LAX Los Angeles Los Angeles

LHRLAX

London Heathrow

Tue 15/12

16:55-20:15

Nonstop11h 20m

Los Angeles Los Angeles

Wed 31/12

00:00-09:00

Nonstop0h 00m

£346

LondonLos Angeles

LHR London Heathrow - LAX Los Angeles Los Angeles

LHRLAX

London Heathrow

Mon 14/12

16:55-20:15

Nonstop11h 20m

Los Angeles Los Angeles

Wed 31/12

00:00-09:00

Nonstop0h 00m

£346

LondonLos Angeles

LHR London Heathrow - LAX Los Angeles Los Angeles

LHRLAX

London Heathrow

Mon 1/3

07:30-22:36

2 stops23h 06m

Los Angeles Los Angeles

Wed 31/12

00:00-09:00

Nonstop0h 00m

£351

LondonOntario

LHR London Heathrow - ONT Ontario

LHRONT

London Heathrow

Thu 17/12

14:45-23:56

1 stop17h 11m

Ontario

Wed 31/12

00:00-09:00

Nonstop0h 00m

£354

LondonLong Beach

LHR London Heathrow - LGB Long Beach Municipal

LHRLGB

London Heathrow

Fri 22/1

14:45-20:58

1 stop14h 13m

Long Beach Municipal

Wed 31/12

00:00-09:00

Nonstop0h 00m

£354

LondonSanta Ana

LHR London Heathrow - SNA Santa Ana J. Wayne/Orange Cnty

LHRSNA

London Heathrow

Tue 8/12

14:45-18:27

1 stop35h 42m

Santa Ana J. Wayne/Orange Cnty

Wed 31/12

00:00-09:00

Nonstop0h 00m

£358

LondonSanta Ana

LHR London Heathrow - SNA Santa Ana J. Wayne/Orange Cnty

LHRSNA

London Heathrow

Mon 30/11

18:45-08:28

2 stops21h 43m

Santa Ana J. Wayne/Orange Cnty

Wed 31/12

00:00-09:00

Nonstop0h 00m

£359

LondonLong Beach

LHR London Heathrow - LGB Long Beach Municipal

LHRLGB

London Heathrow

Thu 22/10

17:00-20:59

1 stop35h 59m

Long Beach Municipal

Wed 31/12

00:00-09:00

Nonstop0h 00m

£359

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Mon 26/10

17:25-17:30

2 stops55h 05m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£365

Flights are sorted by cheapest return flights first.

Deals found on 6/9

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from Heathrow to California

Have a flexible travel schedule? Discover the best time to fly to California from Heathrow with our price prediction graph.

LHR-SNA

LHR-ONT

LHR-BUR

LHR-LAX

LHR-SFO

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to California

LHR-USCA

LHR-SNA

LHR-ONT

LHR-BUR

LHR-LAX

What is the cheapest month to book a flight from London Heathrow Airport to California?

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to California (average of £454). Flying from London Heathrow Airport to California in December is currently the most expensive (average of £605). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LHR to CA?

When flying from London Heathrow Airport to California, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from London Heathrow Airport to California

The most flights from LHR to USCA are scheduled on a Thursday (57 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (41 on average).

How much does it cost for a return flight from London Heathrow Airport to California?

Airfare is typical for this route at the moment.

London Heathrow Airport to California flights typically cost between £391 and £533 in September.
The cheapest return price found within the last 5 days was £419 on Delta (20 Sept–27 Sept).

How far ahead should I book a flight from London Heathrow Airport to California?

The price you pay for your flight from London Heathrow Airport to California may vary depending on when you book. For the best chance of a lower fare, look to book 22 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing California

Get a feel of what it's like to fly with KLM,United Airlines, andVirgin Atlantic from London Heathrow Airport to California by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

KLM

7.8

Good

1,571 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Kushal,Sept 2026

QRO - ATL

It was a nice one. Crew were friendly and helpful.

KLM

7.8

Good

1,571 reviews

KLM

7.8

Good

1,571 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Kushal,Sept 2026

QRO - ATL

It was a nice one. Crew were friendly and helpful.

United Airlines

7.4

Good

10,173 reviews

KLM

7.8

Good

1,571 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Kushal,Sept 2026

QRO - ATL

It was a nice one. Crew were friendly and helpful.

Virgin Atlantic

7.4

Good

694 reviews

KLM

7.8

Good

1,571 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Kushal,Sept 2026

QRO - ATL

It was a nice one. Crew were friendly and helpful.

Lufthansa

6.8

Okay

8,221 reviews

KLM

7.8

Good

1,571 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Kushal,Sept 2026

QRO - ATL

It was a nice one. Crew were friendly and helpful.

British Airways

6.7

Okay

8,209 reviews

KLM

7.8

Good

1,571 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Kushal,Sept 2026

QRO - ATL

It was a nice one. Crew were friendly and helpful.

Related info for your journey

How long is the flight from London Heathrow Airport to California?
For as low as £419, United Airlines can have you in California from London Heathrow Airport in 18h 23m. London Heathrow Airport and California are separated by a distance of 5438 mi. This flight may include one or multiple stops.
What are the cheapest airlines to fly from London Heathrow Airport to California one-way?
One-way options have recently been found by users for as low as £169 on WestJet. Other airlines that offer cheap prices include TAP AIR PORTUGAL from £294 and Virgin Atlantic from £298 one-way.
What are the most popular routes from London Heathrow Airport to California?
When deciding which route to take from London Heathrow Airport to California consider London Heathrow - Los Angeles Los Angeles, London Heathrow - Las Vegas Harry Reid Intl or London Heathrow - San Francisco as they are the most popular.
What are the most reliable airlines from London Heathrow Airport to California?
Before booking your flight to California from London Heathrow Airport, check out the most reliable airlines to get you to your destination on time: SriLankan Airlines (95%), Malaysia Airlines (92%), Fiji Airways( 89%).
What are the cheapest flights from London Heathrow Airport to California?
Looking for the cheapest flight from London Heathrow Airport to California? While on average our users pay £2,315, our data indicates the cheapest price to be £324. The most popular route (London Heathrow - Los Angeles Los Angeles), is priced around £310.
Can I find deals for flights from Heathrow to California that include hotel bookings?
Yes. In addition to deals on Heathrow to California flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Heathrow to California?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to California.
Can I find deals for business class flights from Heathrow to California?
Yes. Cheapflights offers flight deals from Heathrow to California by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from London Heathrow Airport to California?
Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to California (average of £454). Flying from London Heathrow Airport to California in December is currently the most expensive (average of £605). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Complete your trip

Direct flights to United States

Flights by cabin class

Other flight options

Popular flights

Top destinations

Alternative routes for Heathrow to California

Heathrow to John F Kennedy Intl flights

Heathrow to Newark flights

Gatwick to John F Kennedy Intl flights

Gatwick to Newark flights

Heathrow to LaGuardia flights

London City to John F Kennedy Intl flights

Stansted to John F Kennedy Intl flights

Heathrow to Orlando flights

Gatwick to LaGuardia flights

Heathrow to Miami flights

Luton to John F Kennedy Intl flights

London City to Newark flights

Luton to Newark flights

Stansted to Newark flights

Heathrow to Los Angeles flights

Gatwick to Orlando flights

Heathrow to Las Vegas flights

Heathrow to San Francisco flights

Heathrow to Dallas/Fort Worth flights

Heathrow to O'Hare Intl flights

Gatwick to Miami flights

Stansted to Orlando flights

Heathrow to Boston flights

London City to Miami flights

Stansted to Miami flights

Gatwick to Los Angeles flights

Heathrow to Hobby flights

London City to Orlando flights

Heathrow to Dulles Intl flights

London City to Los Angeles flights

Heathrow to Seattle flights

Stansted to Los Angeles flights

Heathrow to Atlanta flights

Heathrow to Baltimore flights

Luton to Miami flights

Heathrow to George Bush Intcntl flights

Heathrow to Tampa flights

Gatwick to Fort Lauderdale flights

Gatwick to O'Hare Intl flights

Gatwick to San Francisco flights

Heathrow to Ontario flights

Heathrow to Nashville flights

Stansted to LaGuardia flights

Gatwick to Las Vegas flights

London City to San Francisco flights

Luton to Orlando flights

London City to O'Hare Intl flights

Stansted to O'Hare Intl flights

Stansted to San Francisco flights

Heathrow to Sky Harbor Intl flights

Top 10 airlines flying from Heathrow to California

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest£274	Average£628	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
United Airlines	Cheapest£302	Average£549	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Brussels Airlines	Cheapest£332	Average£500	FlexibilityNo cancel fee	On-timeN/A	Search Brussels Airlines flights
Virgin Atlantic	Cheapest£337	Average£577	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
TAP AIR PORTUGAL	Cheapest£344	Average£473	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
SWISS	Cheapest£344	Average£509	FlexibilityNo cancel fee	On-time79%	Search SWISS flights
Aer Lingus	Cheapest£345	Average£700	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Austrian Airlines	Cheapest£350	Average£497	FlexibilityNo cancel fee	On-time78%	Search Austrian Airlines flights
British Airways	Cheapest£358	Average£614	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
KLM	Cheapest£360	Average£679	FlexibilityNo cancel fee	On-time75%	Search KLM flights

Fly with Cheapflights

How does Cheapflights help users find flights from Heathrow to California?

Cheapflights helps you search for flights from Heathrow to California via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to California?

Cheapflights simply makes it quick and affordable to book flights from Heathrow to California by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Heathrow to California with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Heathrow to California, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Heathrow to California become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to California from Heathrow today and book when prices fit your budget.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from London Heathrow Airport to California from £346

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/12. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to California

Cheapest flights from Heathrow to CaliforniaExplore the most affordable flight options available from Heathrow to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 September 2026.

Explore the most affordable flight options available from Heathrow to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 September 2026.

Best flights from Heathrow to CaliforniaDiscover carefully curated flight deals from Heathrow to California that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 7 September 2026.

Discover carefully curated flight deals from Heathrow to California that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 7 September 2026.

Direct flights from Heathrow to CaliforniaExplore direct flight options from Heathrow to California based on user searches, and compare prices and availability for your desired travel dates. Data last updated 7 September 2026.

Explore direct flight options from Heathrow to California based on user searches, and compare prices and availability for your desired travel dates. Data last updated 7 September 2026.

Last-minute flights from Heathrow to CaliforniaDiscover last-minute flight deals from Heathrow to California. Data last updated 7 September 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to California. Data last updated 7 September 2026 and is based on user searches.

One-way flights from Heathrow to CaliforniaSearch for one-way flight options from Heathrow to California. Find affordable one-way fares based on user searches. Data last updated 7 September 2026.

Search for one-way flight options from Heathrow to California. Find affordable one-way fares based on user searches. Data last updated 7 September 2026.

Find flight deals from Heathrow to California

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

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

Best time to book a flight from Heathrow to California

Have a flexible travel schedule? Discover the best time to fly to California from Heathrow with our price prediction graph.

Cheapflights Insights

What is the cheapest month to book a flight from London Heathrow Airport to California?

What is the cheapest time of day to fly from LHR to CA?

Find hourly flight availability from Heathrow to California. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 7 September 2026.

When flying from London Heathrow Airport to California, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from London Heathrow Airport to California

The most flights from LHR to USCA are scheduled on a Thursday (57 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (41 on average).

How much does it cost for a return flight from London Heathrow Airport to California?

Airfare is typical for this route at the moment.

London Heathrow Airport to California flights typically cost between £391 and £533 in September.The cheapest return price found within the last 5 days was £419 on Delta (20 Sept–27 Sept).

How far ahead should I book a flight from London Heathrow Airport to California?

The price you pay for your flight from London Heathrow Airport to California may vary depending on when you book. For the best chance of a lower fare, look to book 22 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing California

Get a feel of what it's like to fly with KLM,United Airlines, andVirgin Atlantic from London Heathrow Airport to California by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

How long is the flight from London Heathrow Airport to California?

What are the cheapest airlines to fly from London Heathrow Airport to California one-way?

What are the most popular routes from London Heathrow Airport to California?

What are the most reliable airlines from London Heathrow Airport to California?

What are the cheapest flights from London Heathrow Airport to California?

Can I find deals for flights from Heathrow to California that include hotel bookings?

How can I find direct flights from Heathrow to California?

Can I find deals for business class flights from Heathrow to California?

What is the cheapest month to book a flight from London Heathrow Airport to California?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Heathrow to California

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to California by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to United States

Book a non-stop flight to one of these other cities located in United States.

Search flights from Heathrow to California by cabin class

Find flights from Heathrow to California, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Heathrow and California flights

Browse other Heathrow and California flight options. Last updated on 7 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Heathrow to California flights

Consider these flights travelling from Heathrow to California.

Top 10 airlines flying from Heathrow to California

Fly with Cheapflights

How does Cheapflights help users find flights from Heathrow to California?

Why should you use Cheapflights to find cheap flight tickets from Heathrow to California?

Can Cheapflights find flights from Heathrow to California with no change fees?

Can Cheapflights notify me if prices for flights from Heathrow to California become cheaper?

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Heathrow to California
Explore the most affordable flight options available from Heathrow to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 September 2026.

Best flights from Heathrow to California
Discover carefully curated flight deals from Heathrow to California that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 7 September 2026.

Direct flights from Heathrow to California
Explore direct flight options from Heathrow to California based on user searches, and compare prices and availability for your desired travel dates. Data last updated 7 September 2026.

Last-minute flights from Heathrow to California
Discover last-minute flight deals from Heathrow to California. Data last updated 7 September 2026 and is based on user searches.

One-way flights from Heathrow to California
Search for one-way flight options from Heathrow to California. Find affordable one-way fares based on user searches. Data last updated 7 September 2026.

London Heathrow Airport to California flights typically cost between £391 and £533 in September.
The cheapest return price found within the last 5 days was £419 on Delta (20 Sept–27 Sept).