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$367+ Cheap flights from California to the United Kingdom

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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — LHR
Jan 30 — Feb 61
Fri 1/30
Fri 2/6
1 adult, Economy
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Cheap flight deals from California to United Kingdom

Cheapest flights from California to United Kingdom
Explore the most affordable flight options available from California to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 31, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/31. 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 12/314:10 pmSFO - LHR
1 stop13h 20mMultiple Airlines
Fri 1/99:10 amLHR - SFO
1 stop17h 03mMultiple Airlines
Deal found 12/31$605
This Cheapflightsfares deal was found by Cheapflights users on 12/29. 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 12/302:40 pmSFO - LHR
1 stop14h 10mLufthansa
Mon 1/268:15 pmLHR - SFO
1 stop26h 35mLufthansa
Deal found 12/29$606
This United Airlines deal was found by Cheapflights users on 12/29. 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 12/3112:50 pmSFO - LHR
Nonstop10h 35mUnited Airlines
Tue 1/1311:10 amLHR - SFO
1 stop16h 25mUnited Airlines
Deal found 12/29$607
This Cheapflightsfares deal was found by Cheapflights users on 12/29. 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.
Wed 12/317:25 pmSFO - LCY
1 stop13h 40mSWISS
Tue 1/139:15 amLCY - SFO
1 stop15h 15mSWISS
Deal found 12/29$608
This United Airlines deal was found by Cheapflights users on 12/30. 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 12/305:25 pmSFO - LHR
Nonstop10h 35mUnited Airlines
Mon 1/261:45 pmLHR - SFO
1 stop34h 45mUnited Airlines
Deal found 12/30$608
This Cheapflightsfares deal was found by Cheapflights users on 12/29. 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.
Wed 12/314:10 pmSFO - LHR
1 stop13h 20mMultiple Airlines
Tue 1/137:00 amLHR - SFO
2 stops17h 30mMultiple Airlines
Deal found 12/29$609
This KAYAK deal was found by Cheapflights users on 12/31. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:25 pmSFO - LGW
1 stop14h 25mSWISS
Tue 1/136:40 pmLGW - SFO
1 stop29h 50mSWISS
Deal found 12/31$613
This Delta deal was found by Cheapflights users on 12/31. 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 12/3011:45 pmSFO - LHR
1 stop22h 40mDelta
Mon 1/128:40 amLHR - SFO
1 stop35h 10mDelta
Deal found 12/31$613
This United Airlines deal was found by Cheapflights users on 12/30. 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 12/306:55 pmSFO - LHR
2 stops17h 40mUnited Airlines
Tue 1/1311:10 amLHR - SFO
1 stop16h 25mUnited Airlines
Deal found 12/30$616
This KAYAK deal was found by Cheapflights users on 12/31. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3111:45 amSFO - LGW
2 stops22h 05mSWISS
Mon 1/126:40 pmLGW - SFO
1 stop29h 50mSWISS
Deal found 12/31$618
This Cheapflightsfares deal was found by Cheapflights users on 12/29. 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 12/299:40 pmSFO - LHR
1 stop15h 20mLufthansa
Fri 1/94:20 pmLHR - SFO
1 stop17h 10mLufthansa
Deal found 12/29$620
This KAYAK deal was found by Cheapflights users on 12/31. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3111:45 amSFO - LHR
2 stops20h 35mSWISS
Mon 1/128:05 pmLHR - SFO
1 stop28h 25mSWISS
Deal found 12/31$621

Find flight deals from California to United Kingdom

Keep the following information in mind while searching for California to United Kingdom flight deals. Data was last updated December 31, 2025.

Most accurate provider

Gotogate
3 stars

Most trusted provider

Gotogate
3 stars

Round-trip from

$603
(Cheapflightsfares)

One-way from

$367
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,076

Good round-trip deal

$597 or less

Good one-way deal

$274 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 United Kingdom
Search Deals
One-way flight from California to United Kingdom
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($115 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from California to United Kingdom.
Search Deals
Price to beat on a one-way flight from California to United Kingdom.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from California to United Kingdom 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 December 31, 2025.
Use the filters below to find and compare flights from California to the United Kingdom that are best for you.

Fly from

California

Fly to

United Kingdom

Route

Depart

Return

Price

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sat 2/7

4:40 pm-4:25 pm

2 stops15h 45m

London Heathrow

Sat 2/14

5:30 pm-2:35 pm

2 stops29h 05m

$605

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

Sat 2/7

4:35 pm-9:50 am

1 stop33h 15m

London Gatwick

Sat 2/21

10:10 am-2:35 pm

2 stops60h 25m

$607

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 1/21

12:50 pm-7:25 am

Nonstop10h 35m

London Heathrow

Thu 1/29

11:10 am-6:55 pm

1 stop15h 45m

$615

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Tue 3/17

6:25 pm-12:00 pm

Nonstop10h 35m

London Heathrow

Tue 3/24

6:35 am-8:35 pm

1 stop21h 00m

$615

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sat 2/28

5:25 pm-12:00 pm

Nonstop10h 35m

London Heathrow

Sat 3/7

6:35 am-2:50 pm

1 stop16h 15m

$615

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Thu 2/19

4:30 pm-10:40 am

Nonstop10h 10m

London Heathrow

Sun 2/22

8:40 am-11:50 am

1 stop35h 10m

$616

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sat 2/7

1:20 pm-10:00 am

1 stop12h 40m

London Heathrow

Sat 2/14

8:40 am-11:50 am

1 stop35h 10m

$621

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Wed 3/4

6:00 am-10:00 am

1 stop20h 00m

London Heathrow

Wed 3/11

6:30 am-5:12 pm

2 stops17h 42m

$631

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Wed 2/11

7:30 am-10:30 am

1 stop19h 00m

London Heathrow

Wed 2/18

6:30 am-10:37 pm

2 stops24h 07m

$631

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Fri 1/23

10:25 am-9:30 am

1 stop15h 05m

London Heathrow

Thu 1/29

7:25 am-8:58 pm

1 stop21h 33m

$640

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/30

Showing 1-10 of 60 results
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Best time to book a flight from California to United Kingdom

Have a flexible travel schedule? Discover the best time to fly to United Kingdom 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 the United Kingdom

What is the cheapest month to book a flight from California to United Kingdom?

Currently, October is the cheapest month in which you can book a flight from California to United Kingdom (average of $226). Flying from California to United Kingdom in June is currently the most expensive (average of $556). 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 GB?

Find hourly flight availability from California to United Kingdom. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 31, 2025.

One of the essential ways to save on airfare from California to United Kingdom is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 17% on airfare.

What is the cheapest day to fly from California to United Kingdom?

Use this chart to determine the cheapest time to fly round-trip from California to United Kingdom. Price data was last updated on December 27, 2025.

Travelers seeking maximum savings on their California to United Kingdom flight should consider departing on Tuesday afternoons 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 United Kingdom

Explore weekly flight availability from California to United Kingdom. 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 December 31, 2025.

The most flights from USCA to GB0 are scheduled on a Monday (52 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (31 on average).

Related info for your journey

Find useful and relevant information for your journey from California to United Kingdom. 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 United Kingdom?

    For as low as $615, TAP AIR PORTUGAL can have you in United Kingdom from California in 10h 35m. There are 5350 mi between California and United Kingdom. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from California to United Kingdom 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.

  • Can I find deals for flights from California to United Kingdom that include hotel bookings?

    Yes. In addition to deals on California to United Kingdom flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from California to United Kingdom?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from California to United Kingdom.

  • Can I find deals for business class flights from California to United Kingdom?

    Yes. Cheapflights offers flight deals from California to United Kingdom 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 United Kingdom?

    Currently, October is the cheapest month in which you can book a flight from California to United Kingdom (average of $226). Flying from California to United Kingdom in June is currently the most expensive (average of $556). 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

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.

Alternative routes for California to United Kingdom

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 United Kingdom

Discover the top 10 airlines that operate flights from California to United Kingdom. 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 December 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$151Average$990FlexibilityNo cancel feeOn-time62%
SWISSCheapest$336Average$789FlexibilityNo cancel feeOn-time79%
Norse Atlantic UKCheapest$357Average$681FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$371Average$568FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$410Average$939FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$423Average$681FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$450Average$934FlexibilityNo cancel feeOn-time76%
Virgin AtlanticCheapest$469Average$935FlexibilityNo cancel feeOn-time72%
Aer LingusCheapest$476Average$866FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$486Average$771FlexibilityNo cancel feeOn-time76%

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