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$329+ 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 9/28. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — LHR
May 28 — Jun 41
Thu 5/28
Thu 6/4
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 April 28, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/114:45 pm
SFO
-
LHR
1 stop15h 15m
Scandinavian Airlines
Fri 5/159:05 pm
LHR
-
SFO
2 stops25h 35m
Scandinavian Airlines
Deal found 4/25$719
This CrystalTravel deal was found by Cheapflights users on 4/26. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/275:40 pm
SFO
-
LHR
1 stop17h 00m
Scandinavian Airlines
Tue 11/176:40 am
LHR
-
SFO
1 stop15h 55m
Scandinavian Airlines
Deal found 4/26$722
This CrystalTravel deal was found by Cheapflights users on 4/25. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/285:40 pm
SFO
-
LHR
1 stop15h 20m
Scandinavian Airlines
Fri 11/66:40 am
LHR
-
SFO
1 stop15h 55m
Scandinavian Airlines
Deal found 4/25$723
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/74:45 pm
SFO
-
LHR
1 stop16h 55m
Scandinavian Airlines
Mon 10/126:40 am
LHR
-
SFO
1 stop16h 00m
Scandinavian Airlines
Deal found 4/23$724
This Kiwi.com deal was found by Cheapflights users on 4/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/74:45 pm
SFO
-
LHR
1 stop15h 15m
Scandinavian Airlines
Thu 9/176:40 am
LHR
-
SFO
1 stop16h 00m
Scandinavian Airlines
Deal found 4/26$725
This Kiwi.com deal was found by Cheapflights users on 4/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/154:45 pm
SFO
-
LHR
1 stop16h 55m
Scandinavian Airlines
Tue 10/136:40 am
LHR
-
SFO
1 stop16h 00m
Scandinavian Airlines
Deal found 4/24$726
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/174:45 pm
SFO
-
LHR
1 stop15h 15m
Scandinavian Airlines
Mon 8/246:40 am
LHR
-
SFO
1 stop16h 00m
Scandinavian Airlines
Deal found 4/23$727
This CrystalTravel deal was found by Cheapflights users on 4/27. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/285:40 pm
SFO
-
LHR
1 stop15h 20m
Scandinavian Airlines
Tue 11/106:40 am
LHR
-
SFO
1 stop15h 55m
Scandinavian Airlines
Deal found 4/27$728
This Cheapflightsfares deal was found by Cheapflights users on 4/27. 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.
Mon 5/114:45 pm
SFO
-
LHR
1 stop16h 55m
Scandinavian Airlines
Thu 5/216:40 am
LHR
-
SFO
1 stop16h 00m
Scandinavian Airlines
Deal found 4/27$729
This Cheapflightsfares deal was found by Cheapflights users on 4/24. 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.
Mon 5/114:45 pm
SFO
-
LHR
1 stop16h 55m
Scandinavian Airlines
Tue 5/196:40 am
LHR
-
SFO
1 stop16h 00m
Scandinavian Airlines
Deal found 4/24$730
This Cheapflightsfares deal was found by Cheapflights users on 4/23. 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.
Sun 5/104:45 pm
SFO
-
LHR
1 stop15h 15m
Scandinavian Airlines
Fri 5/159:05 pm
LHR
-
SFO
2 stops25h 35m
Scandinavian Airlines
Deal found 4/23$737
This Cheapflightsfares deal was found by Cheapflights users on 4/27. 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 11/104:40 pm
SFO
-
LHR
1 stop17h 50m
Scandinavian Airlines
Tue 12/16:40 am
LHR
-
SFO
1 stop15h 55m
Scandinavian Airlines
Deal found 4/27$740

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 April 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$719
(Kiwi.com)

One-way from

$405
(Mytrip)

Popular in

December

Cheapest in

September

Average price

$759

Good round-trip deal

$945 or less

Good one-way deal

$443 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. 13% potential increase in price ($108 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 April 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 April 28, 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

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 9/27

1:00 pm-7:25 am

Nonstop10h 25m

London Heathrow

Tue 10/6

7:25 am-2:30 pm

1 stop15h 05m

$852

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 5/11

5:55 pm-12:15 pm

Nonstop10h 20m

London Heathrow

Thu 5/21

6:30 am-11:45 am

1 stop13h 15m

$852

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Tue 9/22

5:55 pm-12:15 pm

Nonstop10h 20m

London Heathrow

Thu 10/8

6:30 am-11:45 am

1 stop13h 15m

$852

San JoseLondon

SJC - LHR

SJCLHR

San Jose

Tue 9/8

11:30 am-3:00 pm

1 stop19h 30m

London Heathrow

Wed 9/16

6:30 am-4:16 pm

2 stops17h 46m

$867

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Wed 9/2

10:00 am-10:20 am

2 stops16h 20m

London Heathrow

Tue 9/8

6:30 am-11:50 am

1 stop13h 20m

$872

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Tue 9/22

7:00 am-5:40 pm

2 stops26h 40m

London Heathrow

Tue 9/29

7:05 am-11:43 pm

3 stops24h 38m

$874

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Wed 9/2

11:05 am-3:35 pm

1 stop20h 30m

London Heathrow

Wed 9/16

8:40 am-6:54 pm

2 stops18h 14m

$878

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Wed 9/16

10:00 am-10:20 am

2 stops16h 20m

London Heathrow

Tue 9/22

6:30 am-4:08 pm

2 stops17h 38m

$882

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Wed 9/23

4:45 pm-11:30 am

Nonstop10h 45m

London Heathrow

Thu 10/1

11:35 am-2:55 pm

Nonstop11h 20m

$891

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 9/30

1:35 pm-10:00 am

1 stop12h 25m

London Heathrow

Sun 10/4

11:30 am-6:00 pm

1 stop14h 30m

$894

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

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

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 14 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 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 $644). Flying from California to London Heathrow Airport in December is currently the most expensive (average of $1,034). 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 April 28, 2026.

It’s optimal to fly from California to London Heathrow Airport at noon. By choosing this option you can save up to 15% on the cost of your flight, compared to 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 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 mornings when fares are most often at their lowest. Thursday mornings 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 April 28, 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 (44 on average).

How much does it cost to fly round-trip 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?

    Airlines like Virgin Atlantic, Lufthansa, and United Airlines fly from California to London Heathrow Airport in about 10h 25m. The time it takes to get you to your destination can typically vary by up to 20h 40m. There are 5350 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?

    $136 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 Ontario - 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 Air Canada (90%), Austrian Airlines (90%) and United Airlines (90%).

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

    Looking at all options, your cheapest flight can be booked for $366. While the most popular route (Los Angeles - London Heathrow) can be booked for $712 on average, our data indicates $2,756 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 $644). Flying from California to London Heathrow Airport in December is currently the most expensive (average of $1,034). 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
Hounslow
Winchester
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Northampton
Borehamwood
Broadway
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 April 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$151Average$965FlexibilityNo cancel feeOn-time62%
Brussels AirlinesCheapest$291Average$858FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$336Average$670FlexibilityNo cancel feeOn-time79%
TAP AIR PORTUGALCheapest$426Average$549FlexibilityNo cancel feeOn-timeN/A
Norse Atlantic UKCheapest$454Average$692FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$474Average$704FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$485Average$785FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$494Average$722FlexibilityNo cancel feeOn-time77%
Alaska AirlinesCheapest$494Average$765FlexibilityNo cancel feeOn-time75%
DeltaCheapest$513Average$848FlexibilityNo cancel feeOn-timeN/A

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