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$222+ 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 7/28. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — LHR
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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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 June 12, 2025.

Round-trip from

$573
(Delta)

One-way from

$222
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$836

Good round-trip deal

$661 or less

Good one-way deal

$443 or less
From California to London Heathrow
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One-way flight from California to London Heathrow
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Highest demand for flights based on searches. 9% potential increase in price ($75 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from California to London Heathrow.
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Price to beat on a one-way flight from California to London Heathrow.
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Find 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 12, 2025.

This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/911:15 amSJC - LHR
1 stop22h 00mDelta
Tue 7/226:15 amLHR - SJC
2 stops17h 48mDelta
Deal found 6/10$573
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/1412:30 pmOAK - LHR
1 stop13h 20mKLM
Tue 8/126:30 amLHR - OAK
2 stops17h 46mKLM
Deal found 6/10$574
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/136:00 amOAK - LHR
2 stops24h 15mDelta
Tue 8/126:30 amLHR - OAK
2 stops17h 46mDelta
Deal found 6/10$579
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/152:32 pmSJC - LHR
1 stop15h 43mKLM
Tue 8/1212:25 pmLHR - SJC
1 stop16h 10mKLM
Deal found 6/10$582
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/315:10 amLAX - LHR
2 stops22h 40mAir Canada
Sun 9/75:40 pmLHR - LAX
2 stops31h 28mAir Canada
Deal found 6/12$594
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/136:24 pmSJC - LHR
2 stops33h 26mAir Canada
Wed 8/139:30 amLHR - SJC
2 stops35h 52mAir Canada
Deal found 6/10$594
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/168:05 amLAX - LHR
1 stop14h 25mUnited Airlines
Tue 8/121:05 pmLHR - LAX
Nonstop11h 05mUnited Airlines
Deal found 6/11$595
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/231:05 pmSJC - LHR
1 stop14h 30mUnited Airlines
Tue 8/57:25 amLHR - SJC
2 stops21h 37mUnited Airlines
Deal found 6/10$601
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/268:20 pmLAX - LHR
Nonstop10h 40mBritish Airways
Fri 11/73:05 pmLHR - LAX
Nonstop11h 20mBritish Airways
Deal found 6/12$602
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/24:50 pmLAX - LHR
1 stop13h 00mKLM
Mon 9/86:30 amLHR - LAX
1 stop13h 20mKLM
Deal found 6/11$607
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/810:10 amLAX - LHR
1 stop16h 50mDelta
Tue 7/2912:25 pmLHR - LAX
1 stop15h 58mDelta
Deal found 6/12$609
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/151:15 pmONT - LHR
1 stop12h 35mDelta
Wed 7/305:25 pmLHR - ONT
1 stop25h 00mDelta
Deal found 6/12$609

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 12, 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

San JoseLondon

SJC - LHR

SJCLHR

San Jose

Wed 7/9

11:15 am-5:15 pm

1 stop22h 00m

London Heathrow

Tue 7/22

6:15 am-4:03 pm

2 stops17h 48m

$573

OaklandLondon

OAK - LHR

OAKLHR

Oakland

Mon 7/14

12:30 pm-9:50 am

1 stop13h 20m

London Heathrow

Tue 8/12

6:30 am-4:16 pm

2 stops17h 46m

$574

OaklandLondon

OAK - LHR

OAKLHR

Oakland

Sun 7/13

6:00 am-2:15 pm

2 stops24h 15m

London Heathrow

Tue 8/12

6:30 am-4:16 pm

2 stops17h 46m

$579

San JoseLondon

SJC - LHR

SJCLHR

San Jose

Tue 7/15

2:32 pm-2:15 pm

1 stop15h 43m

London Heathrow

Tue 8/12

12:25 pm-8:35 pm

1 stop16h 10m

$582

San JoseLondon

SJC - LHR

SJCLHR

San Jose

Sat 7/12

6:24 pm-9:40 am

1 stop31h 16m

London Heathrow

Tue 8/12

11:25 am-5:18 pm

1 stop13h 53m

$587

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Sun 8/31

5:10 am-11:50 am

2 stops22h 40m

London Heathrow

Tue 9/9

5:40 pm-12:58 pm

2 stops27h 18m

$594

San JoseLondon

SJC - LHR

SJCLHR

San Jose

Sun 7/13

6:24 pm-11:50 am

2 stops33h 26m

London Heathrow

Wed 8/13

9:30 am-1:22 pm

2 stops35h 52m

$594

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Wed 7/16

8:05 am-6:30 am

1 stop14h 25m

London Heathrow

Tue 8/12

1:05 pm-4:10 pm

Nonstop11h 05m

$595

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Sun 7/20

3:30 pm-10:00 am

Nonstop10h 30m

London Heathrow

Thu 7/31

10:55 am-11:51 pm

1 stop20h 56m

$600

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Sat 8/2

4:50 pm-1:50 pm

1 stop13h 00m

London Heathrow

Mon 9/8

6:30 am-11:50 am

1 stop13h 20m

$607

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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 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, November is the cheapest month in which you can book a flight from California to London Heathrow Airport (average of $661). Flying from California to London Heathrow Airport in June is currently the most expensive (average of $1,108). 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 12, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from California to London Heathrow Airport as you normally would.

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 12, 2025.

The most flights from USCA to LHR are scheduled on a Monday (58 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (43 on average).

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated June 12, 2025.
Peruse reviews from past customers who have flown with Delta, Alaska Airlines and KLM from California to London to help guide your decision. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Alaska Airlines
8.0
Very good
10,000 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Austrian Airlines
7.6
Good
802 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Finnair
7.6
Good
1,290 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

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

    $233 is the cheapest one-way deal found within the past few days, from TAP AIR PORTUGAL. You may also be able to find cheap deals on WestJet and Iberia, with prices starting from $307 and $337, 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 Air Canada (83%), Austrian Airlines (83%) and United Airlines (83%).

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

    Looking at all options, your cheapest flight can be booked for $391. While the most popular route (Los Angeles - London Heathrow) can be booked for $433 on average our data indicates $3,330 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, November is the cheapest month in which you can book a flight from California to London Heathrow Airport (average of $661). Flying from California to London Heathrow Airport in June is currently the most expensive (average of $1,108). 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 California?

Book flights to California if you plan to visit one of these locations
Hayes
Hounslow
Thornton Heath
Luton
Canterbury
Harrow
Dover
Stratford-upon-Avon
Gatwick
Orpington
Watford
Northampton
Croydon
Folkestone
Borehamwood
Broadway
Sutton
Aylesbury
Chelmsford
Brentwood

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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 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$272Average$933FlexibilityNo cancel feeOn-time60%
Scandinavian AirlinesCheapest$332Average$651FlexibilityNo cancel feeOn-time77%
SWISSCheapest$336Average$713FlexibilityNo cancel feeOn-time79%
Air FranceCheapest$430Average$646FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$449Average$993FlexibilityNo cancel feeOn-time76%
Virgin AtlanticCheapest$454Average$867FlexibilityNo cancel feeOn-time72%
Norse Atlantic UKCheapest$463Average$725FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$465Average$695FlexibilityNo cancel feeOn-time76%
KLMCheapest$486Average$844FlexibilityNo cancel feeOn-time75%
TAP AIR PORTUGALCheapest$487Average$634FlexibilityNo cancel feeOn-timeN/A

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