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$210+ Cheap flights from California to Heathrow (LHR)

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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — LHR
Jul 14 — Jul 211
Tue 7/14
Tue 7/21
1 adult, Economy
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Cheap 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 June 14, 2026.

This United Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/88:00 pm
BUR
-
LHR
1 stop31h 15m
United Airlines
Wed 11/119:00 am
LHR
-
BUR
2 stops21h 08m
United Airlines
Deal found 6/12$742
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:00 am
ONT
-
LHR
2 stops19h 50m
United Airlines
Thu 11/199:30 am
LHR
-
ONT
2 stops19h 51m
United Airlines
Deal found 6/8$754
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/96:30 pm
BUR
-
LHR
2 stops18h 50m
United Airlines
Wed 11/119:30 am
LHR
-
BUR
2 stops20h 38m
United Airlines
Deal found 6/8$754
This eDestinos deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/15:45 pm
SJC
-
LHR
1 stop13h 50m
Virgin Atlantic
Tue 11/246:30 am
LHR
-
SJC
2 stops20h 22m
Virgin Atlantic
Deal found 6/10$778
This SWISS deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/279:10 pm
LAS
-
LHR
2 stops16h 35m
SWISS
Tue 9/298:05 pm
LHR
-
LAS
1 stop27h 45m
SWISS
Deal found 6/12$793
This eDestinos deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/235:00 pm
LAS
-
LHR
1 stop12h 05m
Virgin Atlantic
Tue 9/88:40 am
LHR
-
LAS
1 stop17h 55m
Virgin Atlantic
Deal found 6/12$795
This Air Canada deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2012:10 pm
LAS
-
LHR
2 stops18h 30m
Multiple Airlines
Thu 10/228:30 am
LHR
-
LAS
2 stops21h 53m
Multiple Airlines
Deal found 6/11$799
This Gotogate deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:50 am
LAS
-
LHR
1 stop22h 30m
Multiple Airlines
Thu 11/129:50 am
LHR
-
LAS
1 stop16h 00m
Multiple Airlines
Deal found 6/9$821
This Travelocity deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/162:22 pm
ONT
-
LHR
1 stop16h 03m
Multiple Airlines
Tue 10/1311:30 am
LHR
-
ONT
2 stops19h 36m
Multiple Airlines
Deal found 6/10$822
This Travelocity deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/91:05 pm
ONT
-
LHR
1 stop13h 25m
British Airways
Fri 9/1112:55 pm
LHR
-
ONT
1 stop15h 14m
British Airways
Deal found 6/10$825
This Expedia deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/174:47 pm
ONT
-
LHR
1 stop12h 28m
British Airways
Thu 11/193:00 pm
LHR
-
ONT
1 stop15h 23m
British Airways
Deal found 6/8$828
This Cheapflightsfares deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/812:45 pm
SJC
-
LHR
2 stops21h 00m
Lufthansa
Thu 12/106:35 am
LHR
-
SJC
2 stops22h 36m
Lufthansa
Deal found 6/9$829

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 June 14, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$742
(United Airlines)

One-way from

$210
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$1,061

Good round-trip deal

$950 or less

Good one-way deal

$393 or less
Provider with most accurate pricing for Los Angeles-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-London (LON) flights.
Search Deals
From California to London Heathrow
Search Deals
One-way flight from California to London Heathrow
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($162 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT 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

 
Customize 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 2,558,603 searches. Data last updated June 14, 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 round-trip

BurbankLondon

BUR - LHR

BURLHR

Burbank Bob Hope

Mon 11/9

6:30 pm-9:20 pm

2 stops18h 50m

London Heathrow

Wed 11/11

9:30 am-10:08 pm

2 stops20h 38m

$754

San JoseLondon

SJC - LHR

SJCLHR

San Jose

Mon 8/3

6:30 am-6:45 am

1 stop16h 15m

London Heathrow

Wed 8/19

6:55 am-5:31 pm

2 stops18h 36m

$856

San JoseLondon

SJC - LHR

SJCLHR

San Jose

Wed 9/30

1:40 pm-1:05 pm

2 stops15h 25m

London Heathrow

Fri 10/9

6:30 am-4:57 pm

2 stops18h 27m

$869

BurbankLondon

BUR - LHR

BURLHR

Burbank Bob Hope

Tue 11/24

9:50 am-10:45 am

2 stops16h 55m

London Heathrow

Thu 12/3

8:25 pm-4:18 pm

2 stops27h 53m

$874

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Mon 9/14

3:14 pm-3:05 pm

1 stop15h 51m

London Heathrow

Thu 9/24

5:00 pm-11:24 pm

1 stop14h 24m

$876

OaklandLondon

OAK - LHR

OAKLHR

Oakland

Mon 11/16

1:46 pm-12:20 pm

1 stop14h 34m

London Heathrow

Thu 11/19

2:45 pm-10:39 pm

1 stop15h 54m

$876

San JoseLondon

SJC - LHR

SJCLHR

San Jose

Mon 11/30

9:00 am-9:40 am

1 stop16h 40m

London Heathrow

Fri 1/15

7:30 am-9:11 pm

2 stops21h 41m

$876

OaklandLondon

OAK - LHR

OAKLHR

Oakland

Tue 10/13

12:20 pm-3:05 pm

1 stop18h 45m

London Heathrow

Wed 10/28

2:45 pm-10:55 pm

1 stop15h 10m

$876

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Sun 12/6

6:02 am-7:30 am

1 stop17h 28m

London Heathrow

Thu 12/10

9:30 am-9:21 pm

2 stops19h 51m

$877

BurbankLondon

BUR - LHR

BURLHR

Burbank Bob Hope

Sun 11/8

2:15 pm-12:20 pm

1 stop14h 05m

London Heathrow

Wed 11/11

2:45 pm-9:57 pm

1 stop15h 12m

$877

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

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 round-trip 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 $647). Flying from California to London Heathrow Airport in June is currently the most expensive (average of $1,345). 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 June 14, 2026.

It’s optimal to fly from California to London Heathrow Airport at noon. By choosing this option you can save up to 19% on the cost of your flight, compared to a flight in the morning.

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 June 14, 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 (50 on average).

How much does it cost to fly round-trip from California to London Heathrow Airport?

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

To ensure you get the cheapest price possible for a flight from California to London Heathrow Airport, you should look to book at least 34 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Use this chart to determine the cheapest time to fly round-trip from California to Heathrow. Price data was last updated on October 19, 2025.

Travelers seeking maximum savings on their California to London Heathrow Airport flight should consider departing on Wednesday at noon when fares are most often at their lowest. Saturday evenings 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?

    Airlines like United Airlines, Delta, and KLM fly from California to London Heathrow Airport in about 15h 25m. The time it takes to get you to your destination can typically vary by up to 20h 10m. There are 5352 mi between California and London Heathrow Airport. This flight may include one or multiple stops.

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

    $139 is the cheapest one-way deal found within the past few days, from Norse Atlantic UK. You may also be able to find cheap deals on TAP AIR PORTUGAL and JetBlue, with prices starting from $168 and $179, respectively.

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

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

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

    The top 3 most reliable airlines when flying from California to London Heathrow Airport are KLM (90%), Air France (90%) and Delta (90%).

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

    Looking at all options, your cheapest flight can be booked for $353. While the most popular route (Los Angeles - London Heathrow) can be booked for $606 on average, our data indicates $2,730 when flying from California to London Heathrow Airport.

  • 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 vacation 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 $647). Flying from California to London Heathrow Airport in June is currently the most expensive (average of $1,345). 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

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Ilford
Dorking
Hounslow
Winchester
Croydon
Gatwick
Southend-on-Sea
Wembley
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Northampton
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Slough

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.

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 2,558,603 searches. Data last updated June 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$151Average$958FlexibilityNo cancel feeOn-time62%
Brussels AirlinesCheapest$291Average$1,140FlexibilityNo cancel feeOn-timeN/A
Norse Atlantic UKCheapest$389Average$746FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$426Average$553FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$475Average$729FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$485Average$804FlexibilityNo cancel feeOn-time76%
IberiaCheapest$487Average$748FlexibilityNo cancel feeOn-time77%
Alaska AirlinesCheapest$494Average$965FlexibilityNo cancel feeOn-time75%
SWISSCheapest$513Average$688FlexibilityNo cancel feeOn-time79%
DeltaCheapest$514Average$892FlexibilityNo cancel feeOn-timeN/A

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