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Cheap flights from San Diego to London from £310

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 30/11. 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

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Scandinavian Airlines Logo
15:32 - 21:20SAN-LHR
22h 48m3 stops
Scandinavian Airlines Logo
07:05 - 00:11LHR-SAN
25h 06m2 stops
£480Scandinavian Airlines
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Tue, 24 Mar - Mon, 6 Apr
Scandinavian Airlines Logo
10:37 - 09:20SAN-LHR
38h 43m2 stops
Scandinavian Airlines Logo
06:40 - 22:47LHR-SAN
24h 07m2 stops
£481Scandinavian Airlines
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Fri, 16 Jan - Thu, 22 Jan
Multiple Airlines Logo
12:45 - 11:50SAN-LHR
15h 05m1 stop
Multiple Airlines Logo
07:40 - 15:45LHR-SAN
16h 05m1 stop
£482Multiple Airlines
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Wed, 25 Feb - Thu, 5 Mar
Multiple Airlines Logo
12:45 - 11:50SAN-LHR
15h 05m1 stop
Multiple Airlines Logo
20:15 - 15:45LHR-SAN
27h 30m1 stop
£483Multiple Airlines
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Sun, 11 Jan - Tue, 27 Jan
British Airways Logo
13:19 - 11:40SAN-LHR
14h 21m1 stop
British Airways Logo
12:35 - 20:23LHR-SAN
15h 48m1 stop
£483British Airways
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Mon, 9 Feb - Mon, 16 Feb
Multiple Airlines Logo
16:00 - 11:50SAN-LHR
35h 50m2 stops
Multiple Airlines Logo
18:40 - 20:49LHR-SAN
34h 09m2 stops
£484Multiple Airlines
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Tue, 6 Jan - Mon, 2 Feb
Finnair Logo
10:51 - 10:00SAN-LHR
15h 09m1 stop
Finnair Logo
12:50 - 16:10LHR-SAN
11h 20mdirect
£485Finnair
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Wed, 18 Feb - Mon, 23 Feb
Multiple Airlines Logo
12:45 - 07:10SAN-LHR
34h 25m2 stops
Multiple Airlines Logo
07:40 - 15:45LHR-SAN
16h 05m1 stop
£486Multiple Airlines
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Sat, 17 Jan - Sun, 25 Jan
Multiple Airlines Logo
16:00 - 17:50SAN-LHR
17h 50m2 stops
Multiple Airlines Logo
08:45 - 15:45LHR-SAN
15h 00m1 stop
£486Multiple Airlines
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Wed, 14 Jan - Wed, 21 Jan
Multiple Airlines Logo
18:05 - 11:50SAN-LHR
34h 45m1 stop
Multiple Airlines Logo
16:40 - 16:45LHR-SAN
31h 05m1 stop
£487Multiple Airlines
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Mon, 9 Mar - Mon, 23 Mar

British Airways flights from San Diego to London Heathrow Airport

Our best British Airways deals on San Diego to London Heathrow Airport flight tickets
British Airways
9 Feb
SAN13:19San Diego
14h 21m
1 stop
LHR11:40London Heathrow
16 Feb
LHR12:35London Heathrow
15h 48m
1 stop
SAN20:23San Diego
£483
Find similar
British Airways
16 Apr
SAN15:17San Diego
12h 58m
1 stop
LHR12:15London Heathrow
30 Apr
LHR11:35London Heathrow
11h 20m
SAN14:55San Diego
£488
Find similar
British Airways
30 Apr
SAN10:49San Diego
13h 16m
1 stop
LHR08:05London Heathrow
15 May
LHR11:35London Heathrow
11h 20m
SAN14:55San Diego
£492
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Finnair flights from San Diego to London Heathrow Airport

Our best Finnair deals on San Diego to London Heathrow Airport flight tickets
Finnair
18 Feb
SAN10:51San Diego
15h 09m
1 stop
LHR10:00London Heathrow
23 Feb
LHR12:50London Heathrow
11h 20m
SAN16:10San Diego
£485
Find similar
Finnair
11 Jan
SAN10:50San Diego
15h 10m
1 stop
LHR10:00London Heathrow
27 Jan
LHR12:50London Heathrow
11h 20m
SAN16:10San Diego
£512
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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 27 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

Tue 24/3

15:32-21:20

3 stops22h 48m

London Heathrow

Mon 6/4

07:05-00:11

2 stops25h 06m

£480

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Fri 16/1

10:37-09:20

2 stops38h 43m

London Heathrow

Thu 22/1

06:40-22:47

2 stops24h 07m

£481

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Wed 25/2

12:45-11:50

1 stop15h 05m

London Heathrow

Thu 5/3

07:40-15:45

1 stop16h 05m

£482

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Sun 11/1

12:45-11:50

1 stop15h 05m

London Heathrow

Tue 27/1

20:15-15:45

1 stop27h 30m

£483

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 9/2

13:19-11:40

1 stop14h 21m

London Heathrow

Mon 16/2

12:35-20:23

1 stop15h 48m

£483

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Tue 6/1

16:00-11:50

2 stops35h 50m

London Heathrow

Mon 2/2

18:40-20:49

2 stops34h 09m

£484

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Wed 18/2

10:51-10:00

1 stop15h 09m

London Heathrow

Mon 23/2

12:50-16:10

Nonstop11h 20m

£485

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Sat 17/1

12:45-07:10

2 stops34h 25m

London Heathrow

Sun 25/1

07:40-15:45

1 stop16h 05m

£486

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Wed 14/1

16:00-17:50

2 stops17h 50m

London Heathrow

Wed 21/1

08:45-15:45

1 stop15h 00m

£486

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 9/3

18:05-11:50

1 stop34h 45m

London Heathrow

Mon 23/3

16:40-16:45

1 stop31h 05m

£487

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 £552. The month of February is another great option to travel to London Heathrow Airport, with average flight prices from San Diego averaging around £556.

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 £487. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Friday is £961.

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 £604. 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 afternoon when prices are £768 on average. Flights to London Heathrow Airport from San Diego in the afternoon 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 £678 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 £562 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 35% 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 1% cheaper 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

Best price found

£366

Fastest flight time

10h 35m

Direct flights

Every day
The best one-way flight to London Heathrow Airport from San Diego in the past 72 hours is £366. The best return flight deal from San Diego to London Heathrow Airport found on momondo in the last 72 hours is £743.
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.
Search flight deals

  • 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 £517Free CancellationRating
6.7
7,539 reviews
Search British Airways flights

  • British Airways Flights From San Diego to London Heathrow Airport

    Across 5 British Airways flights from San Diego to London Heathrow Airport this week, the average price was £782, with the best British Airways deals starting from £517 round-trip. 7,539 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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