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Cheap flights from California to London Heathrow Airport from £159

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 28/4. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — LHR
27 Feb — 6 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap 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 28 January 2026.

Mon 2/317:30
LAX
-
LHR
1 stop14h 20m
Multiple Airlines
Fri 13/309:00
LHR
-
LAX
1 stop15h 35m
Multiple Airlines
Deal found 27/1£432
Tue 17/221:25
SFO
-
LHR
1 stop14h 10m
Multiple Airlines
Tue 24/209:00
LHR
-
SFO
1 stop15h 30m
Multiple Airlines
Deal found 27/1£432
Sun 1/319:10
LAX
-
LHR
1 stop14h 40m
SWISS
Wed 18/309:00
LHR
-
LAX
1 stop15h 35m
SWISS
Deal found 27/1£433
Tue 10/219:25
SFO
-
LHR
1 stop14h 25m
SWISS
Fri 20/209:00
LHR
-
SFO
1 stop15h 30m
SWISS
Deal found 27/1£433
Mon 23/219:30
LAX
-
LHR
1 stop14h 10m
Scandinavian Airlines
Mon 2/321:05
LHR
-
LAX
2 stops27h 55m
Scandinavian Airlines
Deal found 27/1£434
Sun 15/216:40
SFO
-
LHR
2 stops18h 10m
Scandinavian Airlines
Sun 1/319:30
LHR
-
SFO
1 stop27h 05m
Scandinavian Airlines
Deal found 26/1£434
Mon 23/214:10
LAX
-
LHR
1 stop13h 40m
Multiple Airlines
Sun 8/307:40
LHR
-
LAX
1 stop15h 35m
Multiple Airlines
Deal found 26/1£435
Mon 27/416:45
SFO
-
LHR
1 stop16h 55m
Scandinavian Airlines
Mon 4/521:05
LHR
-
SFO
2 stops25h 35m
Scandinavian Airlines
Deal found 26/1£435
Thu 5/316:35
LAX
-
LHR
Nonstop10h 20m
Virgin Atlantic
Mon 16/320:25
LHR
-
LAX
1 stop23h 20m
Virgin Atlantic
Deal found 26/1£435
Sun 15/216:40
SFO
-
LHR
1 stop17h 00m
Scandinavian Airlines
Wed 18/219:30
LHR
-
SFO
1 stop27h 05m
Scandinavian Airlines
Deal found 27/1£435
Tue 24/219:30
LAX
-
LHR
2 stops17h 50m
Scandinavian Airlines
Tue 3/321:05
LHR
-
LAX
2 stops27h 55m
Scandinavian Airlines
Deal found 27/1£436
Mon 16/216:40
SFO
-
LHR
1 stop15h 20m
Scandinavian Airlines
Thu 19/315:35
LHR
-
SFO
2 stops31h 00m
Scandinavian Airlines
Deal found 26/1£436

Find flight deals from California to Heathrow

Keep the following information in mind while searching for California to Heathrow flight deals. Data was last updated 28 January 2026.

Round-trip from

£432

One-way from

£159

Popular in

December

Cheapest in

September

Average price

£537

Good round-trip deal

£485 or less

Good one-way deal

£275 or less
SWISS
  • SWISS
  • 2/3-13/3
  • 2 total stops
  • 29h 55m total
  • California to London
Search Deals
United Airlines
  • United Airlines
  • 27/4
  • 1 total stop
  • 16h 20m total
  • California to London
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£60 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
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 28 January 2026.
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

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Thu 26/2

19:00-13:30

Nonstop10h 30m

London Heathrow

Wed 4/3

06:35-15:15

1 stop16h 40m

£448

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Thu 5/3

17:25-12:00

Nonstop10h 35m

London Heathrow

Tue 10/3

06:35-15:50

1 stop16h 15m

£448

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Tue 17/2

17:25-12:00

Nonstop10h 35m

London Heathrow

Tue 3/3

09:00-16:30

1 stop15h 30m

£448

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Mon 2/3

16:35-10:55

Nonstop10h 20m

London Heathrow

Mon 9/3

06:30-12:45

1 stop13h 15m

£451

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Fri 20/3

14:30-11:20

1 stop13h 50m

London Heathrow

Tue 31/3

07:25-14:35

1 stop15h 10m

£454

Santa AnaLondon

SNA - LHR

SNALHR

Santa Ana J. Wayne/Orange Cnty

Thu 5/3

12:25-11:50

1 stop15h 25m

London Heathrow

Mon 9/3

07:40-20:50

2 stops20h 10m

£456

Las VegasLondon

LAS - LHR

LASLHR

Las Vegas Harry Reid Intl

Wed 11/3

05:30-06:30

2 stops18h 00m

London Heathrow

Wed 18/3

06:50-20:39

2 stops20h 49m

£459

Las VegasLondon

LAS - LHR

LASLHR

Las Vegas Harry Reid Intl

Wed 6/5

22:00-15:55

Nonstop9h 55m

London Heathrow

Wed 13/5

11:45-18:35

1 stop14h 50m

£460

SacramentoLondon

SMF - LHR

SMFLHR

Sacramento Intl

Thu 26/2

11:15-10:55

1 stop15h 40m

London Heathrow

Mon 9/3

08:40-20:33

2 stops18h 53m

£462

OaklandLondon

OAK - LHR

OAKLHR

Oakland

Tue 10/2

05:55-10:00

1 stop20h 05m

London Heathrow

Tue 17/2

17:50-16:12

2 stops30h 22m

£462

Flights are sorted by cheapest return flights first.

Deals found on 27/1

Showing 1-10 of 60 results
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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, December is the cheapest month in which you can book a flight from California to London Heathrow Airport (average of £341). Flying from California to London Heathrow Airport in June is currently the most expensive (average of £509). 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 28 January 2026.

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 17% on your trip compared to booking a flight at midday.

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 9 March 2025.

Travellers seeking maximum savings on their California to London Heathrow Airport flight should consider departing on Sunday at midday when fares are most often at their lowest. Monday at midday 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 28 January 2026.

The most flights from USCA to LHR are scheduled on a Monday (43 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (27 on average).

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 £451, United Airlines can have you in London Heathrow Airport from California in 10h 20m. Airlines will cover a distance of 5439 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 TAP AIR PORTUGAL, with whom users have recently found tickets for as low as £118. However, be on the lookout for offers from Scandinavian Airlines 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 (93%), Austrian Airlines (93%), United Airlines (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 £1,114, our data indicates the cheapest price to be £250. The most popular route (Los Angeles - London Heathrow), is priced around £274.

  • 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, December is the cheapest month in which you can book a flight from California to London Heathrow Airport (average of £341). Flying from California to London Heathrow Airport in June is currently the most expensive (average of £509). 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
Luton
Croydon
Wembley
Northampton
Gatwick
Slough
Hounslow
Ilford
Brentford
Hayes
Watford
Colchester
Guildford
Swindon
Chelmsford
Bedford
Crawley
Kingston upon Thames
Eastbourne

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for California to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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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 28 January 2026.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest£308Average£557FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
KLMCheapest£356Average£522FlexibilityNo cancel feeOn-time75%
Search KLM flights
LufthansaCheapest£360Average£499FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Virgin AtlanticCheapest£360Average£528FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Aer LingusCheapest£367Average£498FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
British AirwaysCheapest£378Average£574FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Air FranceCheapest£384Average£567FlexibilityNo cancel feeOn-time77%
Search Air France flights
United AirlinesCheapest£387Average£550FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
FinnairCheapest£395Average£671FlexibilityNo cancel feeOn-time76%
Search Finnair flights
IberiaCheapest£415Average£480FlexibilityNo cancel feeOn-time77%
Search Iberia 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.

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