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Cheap flights from California to London from £235

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 23/3. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — LON
11 Apr — 18 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from California to London

Enter your travel dates to find the best prices.

Cheapest flights from California to London
Explore the most affordable flight options available from California to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 March 2026.

Tue 6/1016:45
SFO
-
LHR
2 stops15h 40m
Scandinavian Airlines
Tue 27/1006:40
LHR
-
SFO
1 stop15h 55m
Scandinavian Airlines
Deal found 6/3£450
Tue 5/516:45
LAX
-
LHR
1 stop22h 10m
TAP AIR PORTUGAL
Tue 26/506:00
LHR
-
LAX
1 stop16h 45m
TAP AIR PORTUGAL
Deal found 8/3£451
Mon 23/317:40
SFO
-
LHR
1 stop15h 20m
Scandinavian Airlines
Thu 9/406:40
LHR
-
SFO
1 stop16h 00m
Scandinavian Airlines
Deal found 7/3£451
Thu 22/1019:10
LAX
-
LHR
1 stop14h 30m
Scandinavian Airlines
Thu 5/1110:20
LHR
-
LAX
1 stop14h 40m
Scandinavian Airlines
Deal found 7/3£451
Mon 20/416:45
SFO
-
LHR
2 stops15h 40m
Scandinavian Airlines
Thu 7/506:40
LHR
-
SFO
1 stop16h 00m
Scandinavian Airlines
Deal found 7/3£451
Mon 31/816:30
LAX
-
LGW
Nonstop10h 25m
Norse Atlantic UK
Thu 10/910:20
LGW
-
LAX
Nonstop11h 15m
Norse Atlantic UK
Deal found 7/3£451
Wed 28/1020:30
LAX
-
LHR
2 stops29h 25m
Scandinavian Airlines
Sat 7/1106:40
LHR
-
LAX
2 stops42h 20m
Scandinavian Airlines
Deal found 9/3£452
Sat 18/419:35
SFO
-
LHR
1 stop15h 15m
TAP AIR PORTUGAL
Wed 6/519:50
LHR
-
SFO
1 stop28h 45m
TAP AIR PORTUGAL
Deal found 7/3£452
Sat 18/418:00
LAX
-
LGW
1 stop31h 45m
TAP AIR PORTUGAL
Thu 30/421:20
LGW
-
LAX
2 stops25h 15m
TAP AIR PORTUGAL
Deal found 7/3£452
Mon 14/919:10
LAX
-
LHR
1 stop14h 30m
Scandinavian Airlines
Thu 24/910:20
LHR
-
LAX
1 stop14h 30m
Scandinavian Airlines
Deal found 8/3£453
Mon 20/416:45
SFO
-
STN
2 stops22h 35m
Multiple Airlines
Mon 27/411:10
STN
-
SFO
3 stops35h 30m
Multiple Airlines
Deal found 8/3£453
Mon 9/317:35
SFO
-
LHR
1 stop36h 05m
TAP AIR PORTUGAL
Tue 24/313:40
LHR
-
SFO
1 stop32h 50m
TAP AIR PORTUGAL
Deal found 7/3£453

Find flight deals from California to London

Keep the following information in mind while searching for California to London flight deals. Data was last updated 12 March 2026.

Round-trip from

£450

One-way from

£235

Popular in

December

Cheapest in

September

Average price

£521

Good round-trip deal

£408 or less

Good one-way deal

£153 or less
Scandinavian Airlines
  • Scandinavian Airlines
  • 20/4-5/5
  • 2 total stops
  • 31h 15m total
  • California to London
Search Deals
Lufthansa
  • Lufthansa
  • 23/3
  • Nonstop
  • 10h 30m total
  • California to London
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£63 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£16 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from California to London (LON).
Search Deals
Price to beat on a one-way flight from California to London (LON).
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from California to London 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 12 March 2026.
Use the filters below to find and compare flights from California to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 27/4

16:45-16:25

2 stops15h 40m

London Heathrow

Fri 1/5

21:05-14:40

2 stops25h 35m

£478

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles Los Angeles

Tue 21/4

06:00-09:35

2 stops19h 35m

London Heathrow

Wed 6/5

21:05-16:50

2 stops27h 45m

£509

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 26/4

12:50-07:25

Nonstop10h 35m

London Heathrow

Wed 6/5

07:25-14:30

1 stop15h 05m

£521

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 11/5

17:55-12:15

Nonstop10h 20m

London Heathrow

Thu 21/5

06:15-12:50

1 stop14h 35m

£527

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

Mon 11/5

15:05-16:00

1 stop16h 55m

London Gatwick

Thu 21/5

10:25-18:00

1 stop15h 35m

£530

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 11/5

17:55-12:15

Nonstop10h 20m

London Heathrow

Thu 21/5

12:45-15:45

Nonstop11h 00m

£543

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles Los Angeles

Mon 30/3

15:30-10:10

Nonstop10h 40m

London Heathrow

Wed 8/4

06:55-15:15

1 stop16h 20m

£543

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Tue 24/3

13:50-07:25

Nonstop10h 35m

London Heathrow

Thu 2/4

13:00-16:10

Nonstop11h 10m

£543

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 29/4

17:55-12:15

Nonstop10h 20m

London Heathrow

Thu 28/5

06:30-11:45

1 stop13h 15m

£547

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles Los Angeles

Wed 13/5

15:50-10:15

Nonstop10h 25m

London Heathrow

Thu 21/5

11:30-18:35

1 stop15h 05m

£548

Flights are sorted by cheapest return flights first.

Deals found on 8/3

Showing 1-10 of 60 resultsSorted by cheapest first
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6

Best time to book a flight from California to London

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

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

Currently, October is the cheapest month in which you can book a flight from California to London (average of £165). Flying from California to London in June is currently the most expensive (average of £420). 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 LON?

Find hourly flight availability from California to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 March 2026.

It’s typically best to fly out from California to London in the afternoon. Doing so could potentially save you 23% on the flight price compared to flying at midday, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly return from California to London. Price data was last updated on 21 February 2026.

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

Weekly flight availability from California to London

Explore weekly flight availability from California to London. 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 12 March 2026.

The most flights from USCA to LON are scheduled on a Monday (51 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (51 on average).

Related info for your journey

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

    Departing from California to London will take you 10h 35m. Airlines will cover a distance of 5350 mi. This flight may include one or multiple stops.

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

    One-way options have recently been found by users for as low as £107 on Norse Atlantic UK. Other airlines that offer cheap prices include TAP AIR PORTUGAL from £121 and JetBlue from £237 one-way.

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

    The most popular flight routes from California to London are Los Angeles Los Angeles - London Heathrow, San Francisco - London Heathrow and Los Angeles Los Angeles - London Stansted.

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

    Before booking your flight to London from California, check out the most reliable airlines to get you to your destination on time: Air Canada (85%), Austrian Airlines (85%), United Airlines( 85%).

  • What are the cheapest flights from California to London?

    Looking for the cheapest flight from California to London? While on average our users pay £1,313, our data indicates the cheapest price to be £247. The most popular route (Los Angeles Los Angeles - London Heathrow), is priced around £376.

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

    Yes. In addition to deals on California to London flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from California to London?

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

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

    Yes. Cheapflights offers flight deals from California to London 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?

    Currently, October is the cheapest month in which you can book a flight from California to London (average of £165). Flying from California to London in June is currently the most expensive (average of £420). 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?

Book flights to London if you plan to visit one of these locations
Milton Keynes
Wembley
Croydon
Luton
Hounslow
Slough
Gatwick
Ilford
Hayes
Brentford
Colchester
Guildford
Watford
Kingston upon Thames
Chelmsford
Eastbourne
Ipswich
Bedford
Romford
Southend-on-Sea

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Alternative routes for California to London

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 London

Discover the top 10 airlines that operate flights from California to London. 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 12 March 2026.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest£237Average£479FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
LufthansaCheapest£319Average£511FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Virgin AtlanticCheapest£368Average£537FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
KLMCheapest£370Average£628FlexibilityNo cancel feeOn-time75%
Search KLM flights
Aer LingusCheapest£376Average£494FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
British AirwaysCheapest£386Average£595FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£396Average£562FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
FinnairCheapest£404Average£720FlexibilityNo cancel feeOn-time76%
Search Finnair flights
IberiaCheapest£425Average£549FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Air FranceCheapest£439Average£695FlexibilityNo cancel feeOn-time77%
Search Air France 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 London?

Deals for California to London flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from California to London?

Cheapflights helps you find that perfect flight to London from California by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from California to London with no change fees?

Yes, we can. To see specific flights from California to London with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from California to London become cheaper?

Yes, Cheapflights offers price alerts on California to London flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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