How long is the flight from California to London?

Departing from California to London will take you 20h 50m. 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 £173 on Virgin Atlantic. Other airlines that offer cheap prices include JetBlue from £223 and Iberia from £230 one-way.

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London, 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What are the most popular routes from California to London?

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

What are the cheapest flights from California to London?

Looking for the cheapest flight from California to London? While on average our users pay £1,060, our data indicates the cheapest price to be £243. The most popular route (San Francisco - London Heathrow), is priced around £491.

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: KLM (91%), SAUDIA (91%), Air France( 91%).

What are the most popular airlines that fly from California to London?

When booking a flight from California to London, you may want to consider flying on Virgin Atlantic, British Airways or United Airlines as they are the most popular for this route.

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.

£213+ Cheap Flights from California to London

Cheap flight deals from California to London

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

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 19 October 2026.

Sun 29/1117:20 -

1 stop14h 15m

Sun 6/1208:25 -

1 stop15h 10m

Deal found 15/10£542

Mon 30/1116:35 -

2 stops20h 00m

Fri 11/1216:40 -

1 stop30h 05m

Deal found 16/10£543

Sat 5/1216:35 -

1 stop22h 05m

Tue 15/1208:15 -

1 stop38h 30m

Deal found 19/10£543

Tue 20/1016:20 -

2 stops20h 05m

Tue 10/1116:35 -

1 stop30h 10m

Deal found 15/10£544

Wed 9/1216:35 -

1 stop21h 00m

Tue 15/1218:30 -

1 stop28h 15m

Deal found 16/10£544

Mon 23/1116:35 -

1 stop33h 15m

Tue 8/1221:20 -

2 stops25h 25m

Deal found 15/10£545

Thu 10/1216:45 -

2 stops56h 10m

Mon 14/1206:40 -

2 stops26h 39m

Deal found 18/10£545

Tue 17/1116:45 -

3 stops31h 35m

Wed 25/1111:05 -

2 stops35h 45m

Deal found 14/10£546

Tue 20/1016:20 -

2 stops20h 05m

Tue 3/1116:35 -

1 stop30h 10m

Deal found 19/10£548

Fri 11/1216:45 -

1 stop17h 45m

Fri 18/1206:40 -

1 stop16h 10m

Deal found 16/10£549

Mon 30/1121:20 -

2 stops33h 50m

Mon 7/1216:10 -

2 stops35h 58m

Deal found 16/10£551

Wed 18/1117:20 -

1 stop17h 35m

Wed 2/1208:50 -

1 stop14h 45m

Deal found 14/10£552

Best flights from California to London
Discover carefully curated flight deals from California to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 19 October 2026.

Wed 17/216:35 -

1 stop33h 15m

Wed 24/209:35 -

2 stops62h 30m

Deal found 17/10£581

Mon 16/1116:45 -

2 stops20h 50m

Sun 22/1106:40 -

1 stop16h 10m

Deal found 15/10£583

Fri 22/116:40 -

Nonstop10h 35m

Sun 24/109:00 -

1 stop15h 30m

Deal found 16/10£623

Tue 23/317:40 -

Nonstop10h 15m

Tue 6/406:30 -

1 stop13h 15m

Deal found 14/10£649

Tue 2/311:00 -

2 stops20h 45m

Wed 17/310:00 -

1 stop14h 35m

Deal found 16/10£657

Wed 17/206:00 -

1 stop22h 20m

Fri 26/214:45 -

1 stop15h 54m

Deal found 14/10£659

Mon 23/1121:30 -

1 stop25h 25m

Tue 8/1207:25 -

1 stop20h 54m

Deal found 18/10£659

Wed 3/318:00 -

Nonstop10h 40m

Fri 5/312:45 -

Nonstop11h 25m

Deal found 17/10£688

Mon 23/1112:50 -

Nonstop10h 35m

Tue 8/1220:05 -

1 stop28h 25m

Deal found 14/10£690

Mon 8/313:45 -

1 stop18h 35m

Sat 13/317:20 -

1 stop25h 30m

Deal found 17/10£695

Fri 16/412:55 -

2 stops16h 10m

Mon 26/420:55 -

2 stops27h 42m

Deal found 19/10£707

Mon 23/1111:13 -

1 stop13h 02m

Tue 8/1212:45 -

Nonstop11h 25m

Deal found 17/10£725

Mon 11/119:25 -

2 stops18h 00m

Mon 18/118:40 -

1 stop29h 50m

Deal found 14/10£728

Sun 14/216:45 -

2 stops20h 50m

Sat 27/215:35 -

2 stops31h 15m

Deal found 18/10£599

Mon 23/1116:35 -

2 stops32h 15m

Tue 8/1221:20 -

2 stops25h 25m

Deal found 15/10£624

Mon 1/318:55 -

Nonstop10h 35m

Fri 5/309:00 -

1 stop15h 35m

Deal found 15/10£644

Mon 8/211:36 -

1 stop16h 44m

Wed 17/214:45 -

1 stop15h 54m

Deal found 19/10£660

Mon 1/306:15 -

2 stops18h 45m

Wed 10/311:45 -

2 stops18h 07m

Deal found 17/10£667

Mon 23/1120:55 -

1 stop16h 45m

Tue 8/1207:25 -

1 stop20h 53m

Deal found 15/10£668

Tue 1/1219:30 -

1 stop14h 10m

Fri 4/1219:30 -

1 stop29h 30m

Deal found 16/10£608

Mon 9/1116:35 -

1 stop15h 10m

Wed 11/1109:35 -

2 stops62h 30m

Deal found 16/10£632

Mon 5/412:55 -

1 stop19h 50m

Tue 13/417:50 -

1 stop25h 10m

Deal found 14/10£701

Sun 28/212:50 -

Nonstop10h 35m

Wed 10/309:00 -

1 stop15h 30m

Deal found 15/10£644

Mon 23/1111:34 -

2 stops20h 11m

Tue 8/1210:00 -

2 stops20h 32m

Deal found 17/10£714

Sun 14/210:55 -

1 stop17h 25m

Tue 16/214:45 -

1 stop14h 57m

Deal found 17/10£660

Sun 11/416:52 -

1 stop13h 28m

Sat 17/413:00 -

1 stop13h 24m

Deal found 17/10£732

Fri 13/1108:00 -

2 stops21h 00m

Fri 20/1109:00 -

2 stops19h 36m

Deal found 16/10£743

Wed 7/407:00 -

2 stops18h 35m

Wed 28/421:05 -

2 stops25h 35m

Deal found 16/10£619

Sun 8/1122:05 -

Nonstop10h 25m

Wed 18/1110:55 -

Nonstop11h 15m

Deal found 19/10£751

Fri 19/219:15 -

2 stops29h 05m

Mon 1/321:35 -

2 stops49h 10m

Deal found 18/10£639

Find flight deals from California to London

Round-trip from	£542
One-way from	£213
Popular in	June
Cheapest in	February
Average price	£662
Good round-trip deal	£692 or less
Good one-way deal	£302 or less

29/11-6/12
2 total stops
29h 25m total
California to London

Search Deals

5/12-31/12
2 total stops
35h 07m total
California to London

Search Deals

Highest demand for flights based on searches. 15% potential increase in price (£95 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£14 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San DiegoLondon

SAN San Diego - LHR London Heathrow

SANLHR

San Diego

Wed 11/11

21:40-21:40

1 stop16h 00m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£218

San DiegoLondon

SAN San Diego - LHR London Heathrow

SANLHR

San Diego

Thu 12/11

11:48-09:30

1 stop13h 42m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£223

San DiegoLondon

SAN San Diego - LHR London Heathrow

SANLHR

San Diego

Sat 14/11

21:40-20:55

1 stop15h 15m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£224

Palm SpringsLondon

PSP Palm Springs - LHR London Heathrow

PSPLHR

Palm Springs

Tue 2/3

15:15-12:15

1 stop13h 00m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£242

OntarioLondon

ONT Ontario - LHR London Heathrow

ONTLHR

Ontario

Wed 3/2

14:00-11:15

1 stop13h 15m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£247

OntarioLondon

ONT Ontario - LHR London Heathrow

ONTLHR

Ontario

Wed 13/1

07:00-06:25

1 stop15h 25m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£247

OntarioLondon

ONT Ontario - LHR London Heathrow

ONTLHR

Ontario

Tue 13/4

13:00-12:25

1 stop15h 25m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£247

San DiegoLondon

SAN San Diego - LHR London Heathrow

SANLHR

San Diego

Mon 7/12

21:40-21:40

1 stop16h 00m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£247

FresnoLondon

FAT Fresno Airterminal - LHR London Heathrow

FATLHR

Fresno Airterminal

Wed 10/3

06:20-11:50

2 stops21h 30m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£250

FresnoLondon

FAT Fresno Airterminal - LHR London Heathrow

FATLHR

Fresno Airterminal

Wed 10/3

06:00-10:00

1 stop20h 00m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£250

Flights are sorted by cheapest return flights first.

Deals found on 18/10

Showing 1-10 of 60 resultsSorted by cheapest first

...

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.

SFO-LGW

SFO-LHR

SAN-LHR

PSP-LHR

ONT-LHR

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

USCA-LON

SFO-LGW

SFO-LHR

SAN-LHR

PSP-LHR

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

Currently, February is the cheapest month in which you can book a flight from California to London (average of £513). Flying from California to London in June is currently the most expensive (average of £982). 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?

It’s typically best to fly out from California to London in the morning. Doing so could potentially save you 24% on the flight price compared to flying in the evening, which is usually more expensive.

Weekly flight availability from California to London

The most flights from USCA to LON are scheduled on a Monday (58 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 for a return flight from California to London?

Airfare is typical for this route at the moment.

California to London flights typically cost between £525 and £821 in February.
The cheapest return price found within the last 5 days was £564 on Multiple Airlines (13 Feb–20 Feb).

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

Booking 73 days in advance of your planned departure date is, on average, the best time to get cheap flights from California to London. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Travellers seeking maximum savings on their California to London flight should consider departing on Thursday afternoons when fares are most often at their lowest. Friday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

How long is the flight from California to London?
Departing from California to London will take you 20h 50m. 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 £173 on Virgin Atlantic. Other airlines that offer cheap prices include JetBlue from £223 and Iberia from £230 one-way.
What are the most popular routes from California to London?
The most popular flight routes from California to London are San Francisco - London Heathrow, Los Angeles - London Heathrow and Los Angeles - London Gatwick.
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: KLM (91%), SAUDIA (91%), Air France( 91%).
What are the cheapest flights from California to London?
Looking for the cheapest flight from California to London? While on average our users pay £1,060, our data indicates the cheapest price to be £243. The most popular route (San Francisco - London Heathrow), is priced around £491.
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, February is the cheapest month in which you can book a flight from California to London (average of £513). Flying from California to London in June is currently the most expensive (average of £982). 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.

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Top 10 airlines flying from California to London

Airline	Cheapest	Average	Flexibility	On-time
TAP AIR PORTUGAL	Cheapest£239	Average£482	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Finnair	Cheapest£323	Average£812	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Virgin Atlantic	Cheapest£454	Average£645	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
KLM	Cheapest£458	Average£810	FlexibilityNo cancel fee	On-time75%	Search KLM flights
British Airways	Cheapest£464	Average£797	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
United Airlines	Cheapest£475	Average£875	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
American Airlines	Cheapest£566	Average£906	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Air France	Cheapest£584	Average£994	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Delta	Cheapest£589	Average£1,058	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
Iberia	Cheapest£647	Average£809	FlexibilityNo cancel fee	On-time77%	Search Iberia flights

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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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Cheap flights from California to London from £213

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/12. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from California to London

Cheapest flights from California to LondonExplore 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 19 October 2026.

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 19 October 2026.

Best flights from California to LondonDiscover carefully curated flight deals from California to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 19 October 2026.

Discover carefully curated flight deals from California to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 19 October 2026.

Direct flights from California to LondonExplore direct flight options from California to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 19 October 2026.

Explore direct flight options from California to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 19 October 2026.

Last-minute flights from California to LondonDiscover last-minute flight deals from California to London. Data last updated 19 October 2026 and is based on user searches.

Discover last-minute flight deals from California to London. Data last updated 19 October 2026 and is based on user searches.

One-way flights from California to LondonSearch for one-way flight options from California to London. Find affordable one-way fares based on user searches. Data last updated 19 October 2026.

Search for one-way flight options from California to London. Find affordable one-way fares based on user searches. Data last updated 19 October 2026.

Find flight deals from California to London

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One-way from

Popular in

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Use the filters below to find and compare flights from California to London that are best for you.

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.

Cheapflights Insights

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

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 19 October 2026.

It’s typically best to fly out from California to London in the morning. Doing so could potentially save you 24% on the flight price compared to flying in the evening, which is usually more expensive.

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 19 October 2026.

The most flights from USCA to LON are scheduled on a Monday (58 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 for a return flight from California to London?

Airfare is typical for this route at the moment.

California to London flights typically cost between £525 and £821 in February.The cheapest return price found within the last 5 days was £564 on Multiple Airlines (13 Feb–20 Feb).

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

Booking 73 days in advance of your planned departure date is, on average, the best time to get cheap flights from California to London. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 19 September 2026.

Travellers seeking maximum savings on their California to London flight should consider departing on Thursday afternoons when fares are most often at their lowest. Friday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

How long is the flight from California to London?

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

What are the most popular routes from California to London?

What are the most reliable airlines from California to London?

What are the cheapest flights from California to London?

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

How can I find direct flights from California to London?

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

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

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How does Cheapflights help users find flights from California to London?

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

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

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

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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 19 October 2026.

Best flights from California to London
Discover carefully curated flight deals from California to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 19 October 2026.

Direct flights from California to London
Explore direct flight options from California to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 19 October 2026.

Last-minute flights from California to London
Discover last-minute flight deals from California to London. Data last updated 19 October 2026 and is based on user searches.

One-way flights from California to London
Search for one-way flight options from California to London. Find affordable one-way fares based on user searches. Data last updated 19 October 2026.

California to London flights typically cost between £525 and £821 in February.
The cheapest return price found within the last 5 days was £564 on Multiple Airlines (13 Feb–20 Feb).