Find flights
Deals
When to book
FAQs

Cheap flights from California to London Heathrow Airport from £165

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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — LHR
7 12月 — 14 12月1
1 adult
1 adult, Economy, 0 bags

Find flight deals from California to Heathrow

Enter your travel dates to find the best prices.

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 7 11月 2025.

週日 9/1106:15SMF - LHR
1 stop16h 50mVirgin Atlantic
週二 25/1114:45LHR - SMF
1 stop17h 05mVirgin Atlantic
Deal found 6/11£429
週三 3/1211:47LAS - LHR
1 stop12h 58mKLM
週四 11/1208:40LHR - LAS
1 stop13h 35mKLM
Deal found 6/11£438
週三 3/1220:55LAS - LHR
Nonstop9h 55mBritish Airways
週二 9/1216:05LHR - LAS
Nonstop10h 45mBritish Airways
Deal found 6/11£439
週三 5/1120:45LAS - LHR
Nonstop9h 55mDelta
週四 13/1108:40LHR - LAS
1 stop13h 35mDelta
Deal found 5/11£440
週四 4/1216:00SJC - LHR
2 stops29h 55mLufthansa
週四 11/1206:35LHR - SJC
2 stops19h 16mLufthansa
Deal found 5/11£441
週三 3/1211:47LAS - LHR
1 stop12h 58mKLM
週二 9/1208:40LHR - LAS
1 stop13h 35mKLM
Deal found 7/11£442
週二 18/1115:50LAS - LHR
1 stop13h 00mVirgin Atlantic
週二 9/1208:40LHR - LAS
1 stop13h 35mVirgin Atlantic
Deal found 5/11£443
週四 4/1206:35SJC - LHR
1 stop15h 50mVirgin Atlantic
週四 11/1208:55LHR - SJC
1 stop19h 46mVirgin Atlantic
Deal found 5/11£444
週三 3/1220:45LAS - LHR
Nonstop9h 55mAir France
週二 9/1216:00LHR - LAS
Nonstop10h 50mAir France
Deal found 6/11£444
週三 3/1220:55LAS - LHR
Nonstop9h 55mBritish Airways
週四 11/1216:05LHR - LAS
Nonstop10h 45mBritish Airways
Deal found 5/11£444
週三 3/1211:47LAS - LHR
1 stop12h 58mKLM
週六 13/1208:40LHR - LAS
1 stop13h 35mKLM
Deal found 5/11£445
週一 24/1106:00SFO - LHR
2 stops17h 50mDelta
週四 4/1206:30LHR - SFO
1 stop13h 20mDelta
Deal found 7/11£446

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 7 11月 2025.

Round-trip from

£421

One-way from

£165

Popular in

December

Cheapest in

September

Average price

£584

Good round-trip deal

£488 or less

Good one-way deal

£299 or less
Iberia
  • Iberia
  • 13/1-31/1
  • 2 total stops
  • 37h 59m total
  • California to London
Search Deals
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 3/2
  • 1 total stop
  • 20h 50m total
  • California to London
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£58 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£16 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 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

Cheapflights Fare Finder

 
Customise your flight search to find flights from California to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 7 11月 2025.
Use the filters below to find and compare flights from California to London Heathrow Airport that are best for you.

Fly from

California

Fly to

Heathrow

Route

Depart

Return

Price

Las VegasLondon

LAS - LHR

LASLHR

Las Vegas Harry Reid Intl

週二 2/12

20:55-14:50

Nonstop9h 55m

London Heathrow

週三 10/12

16:05-18:50

Nonstop10h 45m

£444

Las VegasLondon

LAS - LHR

LASLHR

Las Vegas Harry Reid Intl

週二 30/12

00:35-07:50

1 stop23h 15m

London Heathrow

週五 16/1

16:00-18:50

Nonstop10h 50m

£448

Las VegasLondon

LAS - LHR

LASLHR

Las Vegas Harry Reid Intl

週四 27/11

13:49-21:40

2 stops23h 51m

London Heathrow

週三 10/12

06:40-22:14

2 stops23h 34m

£449

San JoseLondon

SJC - LHR

SJCLHR

San Jose

週三 10/12

11:40-10:30

1 stop14h 50m

London Heathrow

週三 24/12

12:20-19:56

1 stop15h 36m

£455

San JoseLondon

SJC - LHR

SJCLHR

San Jose

週二 18/11

12:50-11:40

1 stop14h 50m

London Heathrow

週二 2/12

11:05-20:36

1 stop17h 31m

£455

OaklandLondon

OAK - LHR

OAKLHR

Oakland

週三 26/11

12:28-10:00

1 stop13h 32m

London Heathrow

週二 9/12

10:45-00:08

1 stop21h 23m

£455

OaklandLondon

OAK - LHR

OAKLHR

Oakland

週三 10/12

12:30-10:00

1 stop13h 30m

London Heathrow

週三 24/12

10:45-22:47

1 stop20h 02m

£455

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

週六 7/2

07:45-09:20

2 stops17h 35m

London Heathrow

週五 20/2

07:05-17:00

2 stops17h 55m

£456

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

週三 11/2

16:02-18:30

2 stops18h 28m

London Heathrow

週二 24/2

06:40-23:16

2 stops24h 36m

£456

Las VegasLondon

LAS - LHR

LASLHR

Las Vegas Harry Reid Intl

週三 4/2

13:20-21:40

2 stops24h 20m

London Heathrow

週一 9/2

06:40-20:55

2 stops22h 15m

£456

Flights are sorted by cheapest return flights first.

Deals found on 5/11

Showing 1-10 of 60 results
1
2
3
...
6

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 £334). Flying from California to London Heathrow Airport in June is currently the most expensive (average of £535). 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?

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 7 11月 2025.

A simple way to save on the total cost of your ticket is to fly from California to London Heathrow Airport in the afternoon. If you’re flexible enough to do this you can expect to save up to 11% on your trip compared to booking a flight in the morning.

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

Use this chart to determine the cheapest time to fly return from California to Heathrow. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their California to London Heathrow Airport flight should consider departing on Wednesday evenings when fares are most often at their lowest. Friday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 7 11月 2025.

The most flights from USCA to LHR are scheduled on a Tuesday (52 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (50 on average).

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

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.

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

    For as low as £444, British Airways can have you in London Heathrow Airport from California in 9h 55m. Airlines will cover a distance of 5213 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as £200. However, be on the lookout for offers from JetBlue and Finnair, 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 France (93%), Delta (93%), Virgin Atlantic (93%).

  • 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 £1,337, our data indicates the cheapest price to be £295. The most popular route (Los Angeles - London Heathrow), is priced around £322.

  • 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 £334). Flying from California to London Heathrow Airport in June is currently the most expensive (average of £535). 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Slough
Gatwick
Hounslow
Northampton
Luton
Ilford
Wembley
Deal
Hayes
Colchester
Watford
Winchester
Swindon
Crawley
Brentford
Romford
Chichester
Ipswich

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 California to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Heathrow flights
Newark to Heathrow flights
John F Kennedy Intl to Gatwick flights
Boston to Heathrow flights
Newark to Gatwick flights
LaGuardia to Heathrow flights
John F Kennedy Intl to London City flights
Dulles Intl to Heathrow flights
LaGuardia to Gatwick flights
John F Kennedy Intl to Stansted flights
Los Angeles to Heathrow flights
San Francisco to Heathrow flights
Newark to London City flights
O'Hare Intl to Heathrow flights
Baltimore to Heathrow flights
Dallas/Fort Worth to Heathrow flights
Newark to Stansted flights
Seattle to Heathrow flights
Newark to Luton flights
Miami to Heathrow flights
Boston to Gatwick flights
Dulles Intl to Gatwick flights
Boston to London City flights
Atlanta to Heathrow flights
Reagan-National to Heathrow flights
Dulles Intl to London City flights
Los Angeles to Gatwick flights
Baltimore to Gatwick flights
Boston to Stansted flights
Reagan-National to Gatwick flights
San Francisco to Gatwick flights
Denver to Heathrow flights
Philadelphia to Heathrow flights
Hobby to Heathrow flights
Los Angeles to London City flights
Orlando to Heathrow flights
Boston to Luton flights
O'Hare Intl to Gatwick flights
Minneapolis to Heathrow flights
Dallas/Fort Worth to Gatwick flights
O'Hare Intl to London City flights
San Francisco to London City flights
Charlotte to Heathrow flights
Raleigh to Heathrow flights
Tampa to Heathrow flights
Dulles Intl to Luton flights
Seattle to Gatwick flights

Top 10 airlines flying from California to Heathrow

Discover the top 10 airlines that operate flights from California to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 7 11月 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest£311Average£478FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£323Average£584FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
KLMCheapest£374Average£518FlexibilityNo cancel feeOn-time75%
Search KLM flights
LufthansaCheapest£377Average£546FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Virgin AtlanticCheapest£378Average£658FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Aer LingusCheapest£386Average£506FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
British AirwaysCheapest£396Average£619FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Air FranceCheapest£403Average£550FlexibilityNo cancel feeOn-time77%
Search Air France flights
United AirlinesCheapest£406Average£680FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
FinnairCheapest£414Average£618FlexibilityNo cancel feeOn-time76%
Search Finnair flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

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.