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Cheap flights from California to London Heathrow Airport from £201

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 4/10. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — LHR
21 Jul — 28 Jul1
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 21 June 2026.

Mon 21/912:44
BUR
-
LHR
1 stop12h 56m
United Airlines
Wed 23/908:40
LHR
-
BUR
2 stops19h 28m
United Airlines
Deal found 20/6£560
Sun 8/1120:00
BUR
-
LHR
1 stop31h 15m
United Airlines
Wed 11/1109:00
LHR
-
BUR
2 stops21h 08m
United Airlines
Deal found 16/6£561
Thu 1/1017:45
SJC
-
LHR
1 stop13h 50m
Virgin Atlantic
Tue 24/1120:25
LHR
-
SJC
2 stops32h 33m
Virgin Atlantic
Deal found 18/6£582
Sun 9/818:12
SJC
-
LHR
1 stop15h 23m
Virgin Atlantic
Sun 27/906:15
LHR
-
SJC
2 stops21h 55m
Virgin Atlantic
Deal found 18/6£594
Tue 10/1116:07
SNA
-
LHR
1 stop35h 08m
United Airlines
Fri 13/1106:35
LHR
-
SNA
2 stops20h 09m
United Airlines
Deal found 18/6£605
Mon 26/1012:25
SNA
-
LHR
1 stop16h 25m
Multiple Airlines
Mon 9/1108:20
LHR
-
SNA
1 stop15h 36m
Multiple Airlines
Deal found 17/6£617
Tue 20/1013:15
SNA
-
LHR
1 stop16h 05m
Multiple Airlines
Wed 28/1013:50
LHR
-
SNA
1 stop15h 01m
Multiple Airlines
Deal found 20/6£618
Wed 30/911:34
SNA
-
LHR
1 stop15h 16m
British Airways
Wed 7/1011:00
LHR
-
SNA
1 stop18h 51m
British Airways
Deal found 20/6£621
Wed 30/907:00
SNA
-
LHR
2 stops15h 30m
Multiple Airlines
Wed 7/1012:55
LHR
-
SNA
1 stop16h 56m
Multiple Airlines
Deal found 20/6£623
Tue 17/1110:47
ONT
-
LHR
1 stop17h 13m
Multiple Airlines
Tue 15/1214:45
LHR
-
ONT
1 stop17h 10m
Multiple Airlines
Deal found 19/6£624
Sun 4/1013:05
ONT
-
LHR
1 stop13h 25m
British Airways
Sat 31/1010:15
LHR
-
ONT
1 stop15h 42m
British Airways
Deal found 19/6£625
Tue 10/1106:00
ONT
-
LHR
1 stop22h 20m
Multiple Airlines
Mon 7/1214:45
LHR
-
ONT
1 stop15h 34m
Multiple Airlines
Deal found 17/6£625

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 21 June 2026.

Round-trip from

£560

One-way from

£201

Popular in

June

Cheapest in

September

Average price

£833

Good round-trip deal

£811 or less

Good one-way deal

£324 or less
United Airlines
  • United Airlines
  • 21/9-23/9
  • 3 total stops
  • 32h 24m total
  • California to London
Search Deals
4/10
  • 4/10
  • 3 total stops
  • 33h 16m total
  • California to London
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£102 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£17 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 21 June 2026.
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 return flight

BurbankLondon

BUR - LHR

BURLHR

Burbank Bob Hope

Mon 21/9

12:44-09:40

1 stop12h 56m

London Heathrow

Wed 23/9

08:40-20:08

2 stops19h 28m

£560

BurbankLondon

BUR - LHR

BURLHR

Burbank Bob Hope

Sun 8/11

20:00-11:15

1 stop31h 15m

London Heathrow

Wed 11/11

09:00-22:08

2 stops21h 08m

£561

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Wed 4/11

12:00-12:20

1 stop16h 20m

London Heathrow

Tue 17/11

14:45-22:54

1 stop16h 09m

£662

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Wed 14/10

14:14-15:05

1 stop16h 51m

London Heathrow

Wed 28/10

14:45-23:42

1 stop15h 57m

£662

BurbankLondon

BUR - LHR

BURLHR

Burbank Bob Hope

Sun 8/11

07:00-12:20

1 stop21h 20m

London Heathrow

Wed 11/11

14:45-21:57

1 stop15h 12m

£662

BurbankLondon

BUR - LHR

BURLHR

Burbank Bob Hope

Sun 8/11

13:07-09:40

1 stop12h 33m

London Heathrow

Fri 13/11

07:30-17:25

2 stops17h 55m

£662

BurbankLondon

BUR - LHR

BURLHR

Burbank Bob Hope

Mon 21/9

17:34-15:05

1 stop13h 31m

London Heathrow

Wed 23/9

17:00-10:12

1 stop25h 12m

£665

OaklandLondon

OAK - LHR

OAKLHR

Oakland

Wed 12/8

06:00-10:00

1 stop20h 00m

London Heathrow

Thu 27/8

10:55-23:56

1 stop21h 01m

£674

BurbankLondon

BUR - LHR

BURLHR

Burbank Bob Hope

Mon 24/8

14:00-13:15

1 stop15h 15m

London Heathrow

Thu 10/9

06:30-21:51

2 stops23h 21m

£675

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Wed 16/9

13:18-09:40

1 stop12h 22m

London Heathrow

Tue 22/9

13:00-20:01

1 stop15h 01m

£676

Flights are sorted by cheapest return flights first.

Deals found on 18/6

Showing 1-10 of 60 resultsSorted by cheapest first
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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, February is the cheapest month in which you can book a flight from California to London Heathrow Airport (average of £489). Flying from California to London Heathrow Airport in June is currently the most expensive (average of £1,019). 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 21 June 2026.

A simple way to save on the total cost of your ticket is to fly from California to London Heathrow Airport in the morning. 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 evening.

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 21 June 2026.

The most flights from USCA to LHR are scheduled on a Monday (54 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (48 on average).

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

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

The price you pay for your flight from California to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 34 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 13 June 2026.

Travellers seeking maximum savings on their California to London Heathrow Airport flight should consider departing on Tuesday 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.

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 £560, United Airlines can have you in London Heathrow Airport from California in 12h 56m. Airlines will cover a distance of 5423 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 £122. However, be on the lookout for offers from United Airlines and British Airways, 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 Los Angeles - London Heathrow, San Francisco - London Heathrow or Ontario - 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: KLM (92%), Air France (92%), Delta (92%).

  • 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 £1,510, our data indicates the cheapest price to be £275. The most popular route (Los Angeles Los Angeles - London Heathrow), is priced around £521.

  • 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, February is the cheapest month in which you can book a flight from California to London Heathrow Airport (average of £489). Flying from California to London Heathrow Airport in June is currently the most expensive (average of £1,019). 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
Hounslow
Milton Keynes
Wembley
Luton
Gatwick
Croydon
Slough
Ilford
Hayes
Brentford
Colchester
Northampton
Kingston upon Thames
Swindon
Eastbourne
Watford
Poole
Guildford
Romford
Ipswich

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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Los Angeles to London City flights
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San Francisco to Stansted flights
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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 21 June 2026.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest£240Average£485FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Virgin AtlanticCheapest£374Average£582FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
KLMCheapest£375Average£711FlexibilityNo cancel feeOn-time75%
Search KLM flights
LufthansaCheapest£377Average£482FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Aer LingusCheapest£381Average£499FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
FinnairCheapest£387Average£696FlexibilityNo cancel feeOn-time76%
Search Finnair flights
British AirwaysCheapest£392Average£699FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£393Average£772FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air FranceCheapest£557Average£1,001FlexibilityNo cancel feeOn-time77%
Search Air France flights
American AirlinesCheapest£558Average£855FlexibilityNo cancel feeOn-time71%
Search American Airlines 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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