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

The cheapest airline one-way is TAP AIR PORTUGAL, with whom users have recently found tickets for as low as £227. However, be on the lookout for offers from Vueling and Iberia, as they are both options that can get you from California to London Heathrow Airport for a low price.

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

Most travelers choose Los Angeles - London Heathrow, San Francisco - London Heathrow or San Diego - London Heathrow when deciding on the best route from California to London Heathrow Airport.

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

Looking for the cheapest flight from California to London Heathrow Airport? While on average our users pay £2,219, our data indicates the cheapest price to be £322. The most popular route (Los Angeles - London Heathrow), is priced around £369.

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

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from California to London Heathrow Airport on time: Air Canada (83%), Austrian Airlines (83%), United Airlines (83%).

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

Before booking your flight from California to London Heathrow Airport check out the most popular airlines for this route: American Airlines, Air France or Finnair.

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

Travelers have found it’s best to book a flight 56 days in advance to save up to 44% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 56 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from California to London Heathrow Airport 1-2 weeks in advance for as low as £548, or £732 for flights within the next 24 hours.

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

October is one of the best times of the year to fly to London Heathrow Airport from California. Prices for October average £561 per person but you can even find prices for as low as £332. The most expensive prices can be found in the month of December. Opting for a October flight can save you 29% on your journey compared to booking in December

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

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

How can I find direct flights from California to Heathrow?

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

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

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

£212+ Flights from California to London Heathrow Airport

Cheap flight deals from California to Heathrow

Round-trip from	£445
One-way from	£212
Popular in	December
Cheapest in	October
Average price	£507
Good round-trip deal	£494 or less
Good one-way deal	£309 or less

Aer Lingus
9/10-14/10
2 total stops
29h 05m total
California to London

Search Deals

12/10
1 total stop
16h 25m total
California to London

Search Deals

Highest demand for flights based on searches. 6% potential increase in price (£27 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

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

Search Deals

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

Search Deals

Find flight deals from California to Heathrow

Cheapest flights from California to Heathrow
Explore the most affordable flight options available from California to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 April 2025.

Thu 9/1020:15LAX - LHR

1 stop14h 40mAer Lingus

Tue 14/1012:00LHR - LAX

1 stop14h 25mAer Lingus

Deal found 17/4£445

Tue 13/521:55LAX - LHR

1 stop13h 50mBritish Airways

Wed 21/514:20LHR - LAX

Nonstop11h 15mBritish Airways

Deal found 17/4£446

Fri 16/520:05LAX - LHR

Nonstop10h 30mVirgin Atlantic

Mon 16/609:55LHR - LAX

Nonstop11h 20mVirgin Atlantic

Deal found 18/4£449

Mon 22/919:30LAX - LHR

1 stop14h 10mScandinavian Airlines

Wed 1/1019:30LHR - LAX

1 stop28h 50mScandinavian Airlines

Deal found 17/4£450

Thu 15/515:30LAX - LHR

Nonstop10h 30mDelta

Mon 9/606:15LHR - LAX

1 stop14h 50mDelta

Deal found 17/4£452

Fri 2/523:40LAX - LHR

2 stops28h 15mMultiple Airlines

Wed 14/515:05LHR - LAX

1 stop36h 00mMultiple Airlines

Deal found 17/4£454

Wed 14/513:30LAX - LHR

1 stop13h 30mAmerican Airlines

Sat 24/516:55LHR - LAX

Nonstop11h 20mAmerican Airlines

Deal found 18/4£459

Sun 12/1019:40SFO - LHR

2 stops17h 55mScandinavian Airlines

Sun 19/1019:50LHR - SFO

2 stops28h 40mScandinavian Airlines

Deal found 17/4£473

Tue 29/419:30SFO - LHR

Nonstop10h 25mBritish Airways

Sun 4/510:45LHR - SFO

Nonstop11h 05mBritish Airways

Deal found 17/4£474

Sun 20/407:00SFO - LHR

2 stops20h 50mMultiple Airlines

Thu 30/1006:00LHR - SFO

1 stop18h 25mMultiple Airlines

Deal found 17/4£475

Thu 24/419:35LAX - LHR

1 stop14h 15mSWISS

Sat 10/506:00LHR - LAX

1 stop18h 30mSWISS

Deal found 17/4£476

Tue 6/512:35SJC - LHR

1 stop13h 05mLufthansa

Tue 13/507:25LHR - SJC

2 stops22h 00mLufthansa

Deal found 18/4£476

Best flights from California to Heathrow
Discover carefully curated flight deals from California to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 April 2025.

Thu 9/1020:15LAX - LHR

1 stop14h 40mAer Lingus

Tue 14/1012:00LHR - LAX

1 stop14h 25mAer Lingus

Deal found 17/4£445

Tue 13/521:55LAX - LHR

1 stop13h 50mBritish Airways

Sun 18/514:20LHR - LAX

Nonstop11h 15mBritish Airways

Deal found 17/4£446

Fri 16/520:05LAX - LHR

Nonstop10h 30mVirgin Atlantic

Mon 16/609:55LHR - LAX

Nonstop11h 20mVirgin Atlantic

Deal found 18/4£449

Mon 22/919:30LAX - LHR

1 stop14h 10mScandinavian Airlines

Wed 1/1019:30LHR - LAX

1 stop28h 50mScandinavian Airlines

Deal found 17/4£450

Thu 15/515:30LAX - LHR

Nonstop10h 30mDelta

Mon 9/606:15LHR - LAX

1 stop14h 50mDelta

Deal found 17/4£452

Fri 2/523:40LAX - LHR

2 stops28h 15mMultiple Airlines

Wed 14/515:05LHR - LAX

1 stop36h 00mMultiple Airlines

Deal found 17/4£454

Wed 14/513:30LAX - LHR

1 stop13h 30mAmerican Airlines

Sat 24/516:55LHR - LAX

Nonstop11h 20mAmerican Airlines

Deal found 18/4£459

Sun 18/516:50LAX - LHR

1 stop13h 00mKLM

Sat 14/608:40LHR - LAX

1 stop14h 10mKLM

Deal found 17/4£476

Tue 6/508:30SJC - LHR

2 stops19h 15mLufthansa

Tue 13/506:55LHR - SJC

2 stops22h 30mLufthansa

Deal found 18/4£476

Wed 7/519:30SFO - LHR

1 stop14h 20mSWISS

Wed 21/508:40LHR - SFO

1 stop15h 30mSWISS

Deal found 17/4£476

Tue 22/720:10SFO - LHR

1 stop15h 55mVueling

Mon 22/920:50LHR - SFO

1 stop29h 20mVueling

Deal found 17/4£478

Thu 25/908:43ONT - LHR

1 stop16h 17mIberia

Wed 22/1020:00LHR - ONT

2 stops36h 02mIberia

Deal found 17/4£481

Direct flights from California to Heathrow
Explore direct flight options from California to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 18 April 2025.

Wed 14/513:25LAX - LHR

Nonstop10h 35mBritish Airways

Wed 28/516:55LHR - LAX

Nonstop11h 20mBritish Airways

Deal found 18/4£446

Fri 16/520:05LAX - LHR

Nonstop10h 30mVirgin Atlantic

Mon 16/609:55LHR - LAX

Nonstop11h 20mVirgin Atlantic

Deal found 18/4£449

Sat 17/522:50LAX - LHR

Nonstop10h 25mDelta

Tue 27/517:30LHR - LAX

Nonstop11h 15mDelta

Deal found 18/4£458

Tue 29/419:30SFO - LHR

Nonstop10h 25mBritish Airways

Sun 4/510:45LHR - SFO

Nonstop11h 05mBritish Airways

Deal found 17/4£474

Tue 6/521:20SFO - LHR

Nonstop10h 20mVirgin Atlantic

Wed 14/511:15LHR - SFO

Nonstop11h 00mVirgin Atlantic

Deal found 16/4£479

Mon 8/919:20SFO - LHR

Nonstop10h 25mIberia

Tue 23/914:15LHR - SFO

Nonstop11h 10mIberia

Deal found 16/4£487

Wed 1/1020:05LAX - LHR

Nonstop10h 30mFinnair

Fri 10/1014:45LHR - LAX

Nonstop11h 20mFinnair

Deal found 16/4£495

Wed 30/720:05LAX - LHR

Nonstop10h 30mAmerican Airlines

Sun 10/814:20LHR - LAX

Nonstop11h 15mAmerican Airlines

Deal found 18/4£507

Sun 24/816:05SFO - LHR

Nonstop10h 20mDelta

Wed 10/916:25LHR - SFO

Nonstop11h 05mDelta

Deal found 16/4£507

Wed 27/816:40SAN - LHR

Nonstop10h 45mBritish Airways

Tue 16/911:30LHR - SAN

Nonstop11h 20mBritish Airways

Deal found 17/4£515

Wed 24/919:50SAN - LHR

Nonstop10h 30mIberia

Wed 22/1014:55LHR - SAN

Nonstop11h 05mIberia

Deal found 17/4£516

Wed 1/1022:05LAS - LHR

Nonstop10h 00mIberia

Thu 9/1017:15LHR - LAS

Nonstop10h 40mIberia

Deal found 18/4£523

Last-minute flights from California to Heathrow
Discover last-minute flight deals from California to Heathrow. Data last updated 18 April 2025 and is based on user searches.

Sun 20/418:25SFO - LHR

1 stop13h 15mVirgin Atlantic

Tue 6/506:30LHR - SFO

1 stop13h 15mVirgin Atlantic

Deal found 17/4£475

Wed 23/415:55SFO - LHR

Nonstop10h 30mUnited Airlines

Tue 6/508:45LHR - SFO

1 stop15h 25mUnited Airlines

Deal found 18/4£495

Thu 24/419:35LAX - LHR

1 stop14h 15mSWISS

Fri 9/506:00LHR - LAX

1 stop18h 30mSWISS

Deal found 17/4£461

Thu 24/419:35LAX - LHR

1 stop14h 15mSWISS

Sat 10/506:00LHR - LAX

1 stop18h 30mSWISS

Deal found 17/4£476

Sun 27/419:30SFO - LHR

1 stop14h 20mSWISS

Thu 8/508:40LHR - SFO

1 stop15h 30mSWISS

Deal found 17/4£476

Sun 27/418:20SFO - LHR

1 stop19h 20mScandinavian Airlines

Tue 6/506:40LHR - SFO

1 stop17h 50mScandinavian Airlines

Deal found 17/4£490

Sun 27/421:25LAX - LHR

Nonstop10h 40mFinnair

Sun 4/516:55LHR - LAX

Nonstop11h 20mFinnair

Deal found 17/4£498

Mon 28/419:45LAX - LHR

1 stop34h 30mMultiple Airlines

Sun 15/615:05LHR - LAX

1 stop34h 25mMultiple Airlines

Deal found 18/4£452

Mon 28/417:45SFO - LHR

1 stop17h 10mAer Lingus

Wed 7/507:40LHR - SFO

1 stop16h 15mAer Lingus

Deal found 17/4£481

Mon 28/416:05SFO - LHR

Nonstop10h 20mVirgin Atlantic

Tue 13/506:30LHR - SFO

1 stop13h 15mVirgin Atlantic

Deal found 17/4£483

Mon 28/408:30SFO - LHR

1 stop14h 05mMultiple Airlines

Wed 7/508:40LHR - SFO

1 stop15h 30mMultiple Airlines

Deal found 17/4£486

Mon 28/406:00OAK - LHR

1 stop19h 50mVirgin Atlantic

Tue 13/506:15LHR - OAK

2 stops18h 00mVirgin Atlantic

Deal found 17/4£495

One-way flights from California to Heathrow
Search for one-way flight options from California to Heathrow. Find affordable one-way fares based on user searches. Data last updated 18 April 2025.

Sun 12/1021:25LAX - LHR

1 stop16h 25mMultiple Airlines

Deal found 17/4£212

Tue 23/916:40LAX - LHR

1 stop18h 10mTAP AIR PORTUGAL

Deal found 17/4£227

Mon 21/710:45LAS - LHR

2 stops27h 05mMultiple Airlines

Deal found 16/4£229

Wed 15/1015:20LAX - LHR

1 stop20h 45mVueling

Deal found 17/4£233

Mon 28/414:02SJC - LHR

2 stops40h 13mMultiple Airlines

Deal found 17/4£271

Mon 5/512:10SJC - LHR

1 stop18h 15mIberia

Deal found 17/4£273

Tue 15/719:48OAK - LHR

3 stops35h 47mMultiple Airlines

Deal found 17/4£280

Mon 26/519:30LAX - LHR

1 stop15h 00mScandinavian Airlines

Deal found 18/4£289

Tue 6/518:45LAX - LHR

1 stop14h 20mFinnair

Deal found 17/4£290

Tue 23/913:00ONT - LHR

1 stop12h 50mVirgin Atlantic

Deal found 17/4£292

Tue 23/910:15SNA - LHR

1 stop15h 35mVirgin Atlantic

Deal found 17/4£292

Sat 10/523:15SFO - LHR

2 stops28h 40mMultiple Airlines

Deal found 16/4£294

Cheapflights 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

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Thu 9/10

20:15-18:55

1 stop14h 40m

London Heathrow

Tue 14/10

12:00-18:25

1 stop14h 25m

£445

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Tue 13/5

21:55-19:45

1 stop13h 50m

London Heathrow

Sun 18/5

14:20-17:35

Nonstop11h 15m

£446

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Fri 16/5

20:05-14:35

Nonstop10h 30m

London Heathrow

Mon 16/6

09:55-13:15

Nonstop11h 20m

£449

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Mon 22/9

19:30-17:40

1 stop14h 10m

London Heathrow

Wed 1/10

19:30-16:20

1 stop28h 50m

£450

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Thu 15/5

15:30-10:00

Nonstop10h 30m

London Heathrow

Mon 9/6

06:15-13:05

1 stop14h 50m

£452

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Fri 2/5

23:40-11:55

2 stops28h 15m

London Heathrow

Wed 14/5

15:05-19:05

1 stop36h 00m

£454

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Wed 14/5

13:30-11:00

1 stop13h 30m

London Heathrow

Sat 24/5

16:55-20:15

Nonstop11h 20m

£459

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 12/10

19:40-21:35

2 stops17h 55m

London Heathrow

Sun 19/10

19:50-16:30

2 stops28h 40m

£473

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Tue 29/4

19:30-13:55

Nonstop10h 25m

London Heathrow

Sun 4/5

10:45-13:50

Nonstop11h 05m

£474

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Tue 6/5

08:15-06:30

1 stop14h 15m

London Heathrow

Tue 13/5

08:45-16:10

1 stop15h 25m

£476

Flights are sorted by cheapest return flights first.

Deals found on 17/4

Showing 1-10 of 60 results

...

Best time to book a flight from California to Heathrow

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

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 California to London Heathrow Airport

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

Currently, January is the cheapest month in which you can book a flight from California to London Heathrow Airport (average of £112). Flying from California to London Heathrow Airport in August is currently the most expensive (average of £164). 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 CA to LHR?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from California to London Heathrow Airport as you normally would.

Weekly flight availability from California to London Heathrow Airport

The most flights from USCA to LHR are scheduled on a Monday (58 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (44 on average).

Rainfall in Heathrow by month

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

If weather is an important factor for your trip to London Heathrow Airport, 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Heathrow

To help decide which airline to fly from California to London, see what other customers have to say about Delta, Alaska Airlines and KLM. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,917 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very Good

7,917 reviews

Delta

8.0

Very Good

7,917 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Alaska Airlines

8.0

Very Good

9,887 reviews

Delta

8.0

Very Good

7,917 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,329 reviews

Delta

8.0

Very Good

7,917 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair

7.6

Good

1,269 reviews

Delta

8.0

Very Good

7,917 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Austrian Airlines

7.6

Good

775 reviews

Delta

8.0

Very Good

7,917 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What are the cheapest airlines to fly from California to London Heathrow Airport one-way?
The cheapest airline one-way is TAP AIR PORTUGAL, with whom users have recently found tickets for as low as £227. However, be on the lookout for offers from Vueling and Iberia, as they are both options that can get you from California to London Heathrow Airport for a low price.
What are the most popular routes from California to London Heathrow Airport?
Most travelers choose Los Angeles - London Heathrow, San Francisco - London Heathrow or San Diego - London Heathrow when deciding on the best route from California to London Heathrow Airport.
What are the most reliable airlines from California to London Heathrow Airport?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from California to London Heathrow Airport on time: Air Canada (83%), Austrian Airlines (83%), United Airlines (83%).
What are the cheapest flights from California to London Heathrow Airport?
Looking for the cheapest flight from California to London Heathrow Airport? While on average our users pay £2,219, our data indicates the cheapest price to be £322. The most popular route (Los Angeles - London Heathrow), is priced around £369.
Can I find deals for flights from California to Heathrow that include hotel bookings?
Yes. In addition to deals on California to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from California to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from California to Heathrow.
Can I find deals for business class flights from California to Heathrow?
Yes. Cheapflights offers flight deals from California to Heathrow 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 California to London Heathrow Airport?
Currently, January is the cheapest month in which you can book a flight from California to London Heathrow Airport (average of £112). Flying from California to London Heathrow Airport in August is currently the most expensive (average of £164). 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

Hounslow

Deal

Milton Keynes

Gatwick

Luton

Slough

Croydon

Eastbourne

Wembley

Northampton

Hayes

Crawley

Southend-on-Sea

Maidstone

Swindon

Ipswich

Southall

Ilford

Winchester

Folkestone

Browse thousands of different options on Cheapflights for your next trip

Top 10 airlines flying from California to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
Scandinavian Airlines	Cheapest£308	Average£452	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
Finnair	Cheapest£370	Average£653	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Air France	Cheapest£386	Average£531	FlexibilityNo cancel fee	On-time77%	Search Air France flights
KLM	Cheapest£388	Average£537	FlexibilityNo cancel fee	On-time75%	Search KLM flights
TAP AIR PORTUGAL	Cheapest£396	Average£412	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Lufthansa	Cheapest£424	Average£697	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Virgin Atlantic	Cheapest£427	Average£614	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Iberia	Cheapest£433	Average£549	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
British Airways	Cheapest£436	Average£660	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Air Canada	Cheapest£440	Average£620	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights

Fly with Cheapflights

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Heathrow from California today with Cheapflights!

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from California to Heathrow.

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

Yes! Cheapflights helps users easily find flights from California to Heathrow with no change fees.

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

Of course! You can now track prices for flights from California to Heathrow and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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Cheap flights from California to London Heathrow Airport from £212

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from California to Heathrow

Keep the following information in mind while searching for California to Heathrow flight deals. Data was last updated 18 April 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from California to Heathrow

Cheapest flights from California to HeathrowExplore the most affordable flight options available from California to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 April 2025.

Explore the most affordable flight options available from California to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 April 2025.

Cheapflights Fare Finder

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

Best time to book a flight from California to Heathrow

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

Cheapflights Insights

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

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

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

Find hourly flight availability from California to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 April 2025.

Weekly flight availability from California to London Heathrow Airport

Explore weekly flight availability from California to Heathrow. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 18 April 2025.

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

Reviews of airlines servicing Heathrow

Related info for your journey

Find useful and relevant information for your journey from California to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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

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

How can I find direct flights from California to Heathrow?

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

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

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Alternative routes for California to Heathrow

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Top 10 airlines flying from California to Heathrow

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Cheapest flights from California to Heathrow
Explore the most affordable flight options available from California to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 April 2025.