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Cheap flights from San Diego to London from £315

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Diego to London departing on 17/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap return flights

Enter your travel dates to find the best prices.
British Airways Logo
18:00 - 12:35SAN-LHR
10h 35mdirect
British Airways Logo
12:50 - 16:10LHR-SAN
11h 20mdirect
£477British Airways
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Thu, 15 Jan - Tue, 20 Jan
Multiple Airlines Logo
12:45 - 11:50SAN-LHR
15h 05m1 stop
Multiple Airlines Logo
19:15 - 15:45LHR-SAN
28h 30m1 stop
£477Multiple Airlines
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Mon, 24 Nov - Tue, 9 Dec
Multiple Airlines Logo
08:00 - 07:50SAN-LHR
15h 50m1 stop
Multiple Airlines Logo
06:30 - 12:05LHR-SAN
13h 35m1 stop
£478Multiple Airlines
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Wed, 18 Feb - Tue, 24 Feb
Scandinavian Airlines Logo
09:59 - 18:30SAN-LHR
24h 31m2 stops
Scandinavian Airlines Logo
06:40 - 23:58LHR-SAN
25h 18m2 stops
£479Scandinavian Airlines
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Wed, 3 Dec - Fri, 12 Dec
Delta Logo
06:15 - 10:00SAN-LHR
19h 45m1 stop
Delta Logo
06:30 - 15:23LHR-SAN
16h 53m2 stops
£480Delta
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Wed, 3 Dec - Fri, 12 Dec
British Airways Logo
13:23 - 10:25SAN-LHR
13h 02m1 stop
British Airways Logo
10:05 - 18:04LHR-SAN
15h 59m1 stop
£481British Airways
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Mon, 1 Dec - Sun, 7 Dec
Delta Logo
06:30 - 06:25SAN-LHR
15h 55m2 stops
Delta Logo
06:30 - 12:05LHR-SAN
13h 35m1 stop
£481Delta
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Tue, 10 Feb - Tue, 24 Feb
Delta Logo
06:15 - 07:05SAN-LHR
16h 50m2 stops
Delta Logo
09:00 - 19:17LHR-SAN
18h 17m2 stops
£482Delta
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Mon, 24 Nov - Tue, 9 Dec
Delta Logo
06:30 - 08:45SAN-LHR
18h 15m2 stops
Delta Logo
06:30 - 19:17LHR-SAN
20h 47m2 stops
£483Delta
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Sun, 23 Nov - Wed, 3 Dec
American Airlines Logo
13:44 - 12:00SAN-LHR
14h 16m1 stop
American Airlines Logo
11:00 - 20:45LHR-SAN
17h 45m1 stop
£484American Airlines
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Sun, 23 Nov - Wed, 3 Dec

American Airlines flights from San Diego to London Heathrow Airport

Our best American Airlines deals on San Diego to London Heathrow Airport flight tickets
American Airlines
23 Nov
SAN13:44San Diego
14h 16m
1 stop
LHR12:00London Heathrow
3 Dec
LHR11:00London Heathrow
17h 45m
1 stop
SAN20:45San Diego
£484
Find similar
American Airlines
24 Nov
SAN18:00San Diego
10h 35m
LHR12:35London Heathrow
9 Dec
LHR12:50London Heathrow
11h 20m
SAN16:10San Diego
£513
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Delta flights from San Diego to London Heathrow Airport

Our best Delta deals on San Diego to London Heathrow Airport flight tickets
Delta
3 Dec
SAN06:15San Diego
19h 45m
1 stop
LHR10:00London Heathrow
12 Dec
LHR06:30London Heathrow
16h 53m
2 stops
SAN15:23San Diego
£480
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Delta
10 Feb
SAN06:30San Diego
15h 55m
2 stops
LHR06:25London Heathrow
24 Feb
LHR06:30London Heathrow
13h 35m
1 stop
SAN12:05San Diego
£481
Find similar
Delta
24 Nov
SAN06:15San Diego
16h 50m
2 stops
LHR07:05London Heathrow
9 Dec
LHR09:00London Heathrow
18h 17m
2 stops
SAN19:17San Diego
£482
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momondo Fare Finder

 
Customise your flight search to find flights from San Diego to London Heathrow Airport 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, momondo users made 279,928 searches. Data last updated 13 November 2025.
Use the filters below to find and compare flights from San Diego to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Thu 15/1

18:00-12:35

Nonstop10h 35m

London Heathrow

Tue 20/1

12:50-16:10

Nonstop11h 20m

£477

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 24/11

12:45-11:50

1 stop15h 05m

London Heathrow

Tue 9/12

19:15-15:45

1 stop28h 30m

£477

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Wed 18/2

08:00-07:50

1 stop15h 50m

London Heathrow

Tue 24/2

06:30-12:05

1 stop13h 35m

£478

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Wed 3/12

09:59-18:30

2 stops24h 31m

London Heathrow

Fri 12/12

06:40-23:58

2 stops25h 18m

£479

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Wed 3/12

06:15-10:00

1 stop19h 45m

London Heathrow

Fri 12/12

06:30-15:23

2 stops16h 53m

£480

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 1/12

13:23-10:25

1 stop13h 02m

London Heathrow

Sun 7/12

10:05-18:04

1 stop15h 59m

£481

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Tue 10/2

06:30-06:25

2 stops15h 55m

London Heathrow

Tue 24/2

06:30-12:05

1 stop13h 35m

£481

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 24/11

06:15-07:05

2 stops16h 50m

London Heathrow

Tue 9/12

09:00-19:17

2 stops18h 17m

£482

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Sun 23/11

06:30-08:45

2 stops18h 15m

London Heathrow

Wed 3/12

06:30-19:17

2 stops20h 47m

£483

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Sun 23/11

13:44-12:00

1 stop14h 16m

London Heathrow

Wed 3/12

11:00-20:45

1 stop17h 45m

£484

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from San Diego to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to London Heathrow Airport?

In general, October is the cheapest month to fly from San Diego to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £555. The month of February is another great option to travel to London Heathrow Airport, with average flight prices from San Diego averaging around £560.

What is the cheapest day to depart on your flight to London Heathrow Airport?

On average, the least expensive day to fly to London Heathrow Airport from San Diego is on a Monday. momondo users have found tickets for Monday departures for as low as £490. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Wednesday is £1,059.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the morning. momondo users have found flights departing from San Diego to London Heathrow Airport in the morning for as low as £607. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are £718 on average. Flights to London Heathrow Airport from San Diego in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest San Diego to London Heathrow flight route?

Fly from San Diego to London Heathrow for the best San Diego - London Heathrow flight prices

How far in advance should I book a flight to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from San Diego when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £684 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from San Diego for as low as £565 on momondo.

What cabin class options are available on San Diego to London Heathrow flights?

There are 3 cabin classes available to choose from on San Diego to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on San Diego to London Heathrow Airport flights?

You could potentially save up to 13% on your flight if you consider stops on a San Diego to London Heathrow Airport flight.

How have San Diego to London Heathrow Airport flight prices changed over time?

As of November 2025, prices for San Diego to London Heathrow Airport flights are approximately 4% more expensive when compared to flights at the same time last year.

When to book flights from San Diego to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from San Diego to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap San Diego to London Heathrow Airport (SAN to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Diego to London Heathrow Airport

Fastest flight time

10h 35m

Direct flights

Every day
The fastest flight from San Diego to London Heathrow Airport takes 10h 35m
Direct flights go from San Diego to London Heathrow Airport every day.
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  • How far is San Diego to London Heathrow by plane?

    San Diego and London Heathrow are 5468.7 mi apart from one another. 10h 35m is a normal flight duration for this route.

  • When did momondo last update prices for flights from San Diego Airport to London Heathrow Airport?

    Prices for flights from San Diego Airport to London Heathrow Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from San Diego Airport to London Heathrow Airport?

  • How old do you have to be to fly from San Diego Airport to London Heathrow Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Diego Airport to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from San Diego to London Heathrow Airport?

  • What is the most popular airline from San Diego to London Heathrow Airport?

Best airlines flying from San Diego to London Heathrow Airport

Compare and see reviews for airlines that fly from San Diego to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom £522Free CancellationRating
6.7
7,515 reviews
Search British Airways flights

  • British Airways Flights From San Diego to London Heathrow Airport

    Across 7 British Airways flights from San Diego to London Heathrow Airport this week, the average price was £766, with the best British Airways deals starting from £522 round-trip. 7,515 users have rated British Airways on momondo, with an average score of 6.7/10.

Travelling to a place near London?

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Why use momondo?

Why should I use momondo to find a flight deal from San Diego to London?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from San Diego to London. momondo saves you time and could save you money on your trip.

Can I find flights from San Diego to London with flexible booking policies on momondo?

Flights from San Diego to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from San Diego to London?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from San Diego to London.

I’m not ready to book a flight from San Diego to London right now. Can momondo alert me if prices change?

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from San Diego and alert you when they change.

An easier way to manage your London Heathrow Airport trip

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