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Cheap flights from San Diego to London from $235

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 1/21. 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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Multiple Airlines Logo
6:10 pm - 11:50 amSAN-LHR
33h 40m1 stop
Multiple Airlines Logo
8:15 pm - 3:45 pmLHR-SAN
27h 30m1 stop
$611Multiple Airlines
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Sun, Nov 23 - Wed, Dec 3
British Airways Logo
6:00 pm - 12:35 pmSAN-LHR
10h 35mnonstop
British Airways Logo
12:50 pm - 4:10 pmLHR-SAN
11h 20mnonstop
$612British Airways
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Mon, Nov 24 - Tue, Dec 9
Scandinavian Airlines Logo
10:00 am - 6:30 pmSAN-LHR
24h 30m2 stops
Scandinavian Airlines Logo
6:40 am - 10:55 pmLHR-SAN
24h 15m2 stops
$613Scandinavian Airlines
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Mon, Apr 20 - Tue, Apr 28
American Airlines Logo
6:00 pm - 12:35 pmSAN-LHR
10h 35mnonstop
American Airlines Logo
12:50 pm - 4:10 pmLHR-SAN
11h 20mnonstop
$622American Airlines
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Mon, Nov 24 - Tue, Dec 9
Virgin Atlantic Logo
7:50 am - 7:05 amSAN-LHR
15h 15m1 stop
Virgin Atlantic Logo
8:55 am - 6:18 pmLHR-SAN
17h 23m1 stop
$624Virgin Atlantic
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Mon, Nov 24 - Tue, Dec 9
Virgin Atlantic Logo
8:00 am - 7:50 amSAN-LHR
15h 50m1 stop
Virgin Atlantic Logo
5:50 pm - 12:05 pmLHR-SAN
26h 15m1 stop
$626Virgin Atlantic
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Wed, Feb 18 - Mon, Feb 23
Delta Logo
7:50 am - 7:05 amSAN-LHR
15h 15m1 stop
Delta Logo
10:45 am - 6:12 pmLHR-SAN
15h 27m1 stop
$627Delta
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Mon, Nov 24 - Tue, Dec 9
Delta Logo
6:35 am - 10:55 amSAN-LHR
20h 20m1 stop
Delta Logo
8:55 am - 7:17 pmLHR-SAN
18h 22m2 stops
$628Delta
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Mon, Nov 24 - Tue, Dec 9
United Airlines Logo
6:05 pm - 11:50 amSAN-LHR
34h 45m1 stop
United Airlines Logo
7:25 am - 3:25 pmLHR-SAN
16h 00m1 stop
$649United Airlines
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Mon, Mar 23 - Tue, Mar 31
United Airlines Logo
10:47 pm - 9:20 pmSAN-LHR
14h 33m1 stop
United Airlines Logo
11:10 am - 3:45 pmLHR-SAN
36h 35m1 stop
$655United Airlines
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Sun, Nov 23 - Wed, Dec 3

United Airlines flights from San Diego to London Heathrow Airport

Our best United Airlines deals on San Diego to London Heathrow Airport flight tickets
United Airlines
Mar 23
SAN6:05 pmSan Diego
34h 45m
1 stop
LHR11:50 amLondon Heathrow
Mar 31
LHR7:25 amLondon Heathrow
16h 00m
1 stop
SAN3:25 pmSan Diego
$649
Find similar
United Airlines
Nov 12
SAN12:45 pmSan Diego
15h 05m
1 stop
LHR11:50 amLondon Heathrow
Nov 27
LHR6:35 amLondon Heathrow
21h 30m
2 stops
SAN8:05 pmSan Diego
$650
Find similar
United Airlines
Nov 23
SAN10:47 pmSan Diego
14h 33m
1 stop
LHR9:20 pmLondon Heathrow
Dec 3
LHR11:10 amLondon Heathrow
36h 35m
1 stop
SAN3:45 pmSan Diego
$655
Find similar

Delta flights from San Diego to London Heathrow Airport

Our best Delta deals on San Diego to London Heathrow Airport flight tickets
Delta
Nov 24
SAN7:50 amSan Diego
15h 15m
1 stop
LHR7:05 amLondon Heathrow
Dec 9
LHR10:45 amLondon Heathrow
15h 27m
1 stop
SAN6:12 pmSan Diego
$627
Find similar
Delta
Nov 12
SAN7:18 amSan Diego
17h 27m
1 stop
LHR8:45 amLondon Heathrow
Feb 6
LHR6:20 amLondon Heathrow
18h 18m
2 stops
SAN4:38 pmSan Diego
$628
Find similar
Delta
Nov 19
SAN6:15 amSan Diego
20h 15m
1 stop
LHR10:30 amLondon Heathrow
Nov 26
LHR11:45 amLondon Heathrow
18h 35m
2 stops
SAN10:20 pmSan Diego
$629
Find similar

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated November 8, 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

Sun 11/23

6:10 pm-11:50 am

1 stop33h 40m

London Heathrow

Wed 12/3

8:15 pm-3:45 pm

1 stop27h 30m

$611

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 11/24

6:00 pm-12:35 pm

Nonstop10h 35m

London Heathrow

Tue 12/9

12:50 pm-4:10 pm

Nonstop11h 20m

$612

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 4/20

10:00 am-6:30 pm

2 stops24h 30m

London Heathrow

Tue 4/28

6:40 am-10:55 pm

2 stops24h 15m

$613

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 11/24

6:00 pm-12:35 pm

Nonstop10h 35m

London Heathrow

Tue 12/9

12:50 pm-4:10 pm

Nonstop11h 20m

$622

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 11/24

7:50 am-7:05 am

1 stop15h 15m

London Heathrow

Tue 12/9

8:55 am-6:18 pm

1 stop17h 23m

$624

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Wed 2/18

8:00 am-7:50 am

1 stop15h 50m

London Heathrow

Mon 2/23

5:50 pm-12:05 pm

1 stop26h 15m

$626

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 11/24

7:50 am-7:05 am

1 stop15h 15m

London Heathrow

Tue 12/9

10:45 am-6:12 pm

1 stop15h 27m

$627

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 11/24

6:35 am-10:55 am

1 stop20h 20m

London Heathrow

Tue 12/9

8:55 am-7:17 pm

2 stops18h 22m

$628

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 3/23

6:05 pm-11:50 am

1 stop34h 45m

London Heathrow

Tue 3/31

7:25 am-3:25 pm

1 stop16h 00m

$649

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Sun 11/23

10:47 pm-9:20 pm

1 stop14h 33m

London Heathrow

Wed 12/3

11:10 am-3:45 pm

1 stop36h 35m

$655

Flights are sorted by cheapest round-trip 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?

The month of February is, on average, the cheapest month to fly to London Heathrow Airport from San Diego, with most prices found around $733. If you’re not able to fly to London Heathrow Airport in February, then January is your next best option. Flight prices from San Diego to London Heathrow Airport during January average around $736.

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

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $875. The most expensive day to fly to London Heathrow Airport is Thursday, with ticket prices averaging around $1,011.

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 at noon. momondo users have found flights departing from San Diego to London Heathrow Airport at noon for as low as $908. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the morning are often more expensive with an average ticket price of $963.

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 $898 when searching weeks out. 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 $724 on momondo.

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

There are 4 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 39% 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 round-trip 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

$463

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 $463. The best round-trip flight deal from San Diego to London Heathrow Airport found on momondo in the last 72 hours is $691.
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?

    London Heathrow is 5468.7 mi away from San Diego. Typically, this will take 10h 35m by plane in normal conditions.

  • 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 refresh daily.

  • 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?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Diego Airport to London Heathrow Airport.

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

    The required travel and health documents for your London Heathrow Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Heathrow Airport. We recommend that you seek guidance from your airline or a reliable 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
JetBluePriceFrom $210Free CancellationRating
7.2
2,908 reviews
Search JetBlue flights
DeltaPriceFrom $552Free CancellationRating
7.9
8,003 reviews
Search Delta flights
FinnairPriceFrom $556Free CancellationRating
7.6
1,335 reviews
Search Finnair flights
United AirlinesPriceFrom $567Free CancellationRating
7.4
9,009 reviews
Search United Airlines flights
British AirwaysPriceFrom $577Free CancellationRating
6.7
7,504 reviews
Search British Airways flights
Scandinavian AirlinesPriceFrom $581Free CancellationRating
7.4
1,568 reviews
Search Scandinavian Airlines flights
IberiaPriceFrom $583Free CancellationRating
7.0
3,007 reviews
Search Iberia flights
American AirlinesPriceFrom $594Free CancellationRating
7.2
11,047 reviews
Search American Airlines flights
Virgin AtlanticPriceFrom $620Free CancellationRating
7.5
672 reviews
Search Virgin Atlantic flights
LufthansaPriceFrom $678Free CancellationRating
6.8
7,557 reviews
Search Lufthansa flights

  • Finnair Flights From San Diego to London Heathrow Airport

    Finnair is one of the most popular airlines flying from San Diego to London Heathrow Airport, operating 7 flights/week on average for this route. A good Finnair flight deal for San Diego to London Heathrow Airport starts from $556 round-trip, up to an average price of $827. Our users have rated Finnair at 7.6/10.

  • American Airlines Flights From San Diego to London Heathrow Airport

    $594 is the best American Airlines flight deal from San Diego to London Heathrow Airport found on momondo over the last 72 hours. The average American Airlines ticket price found was closer to $932, however, with flight time and availability significantly affecting the price. American Airlines (7.2/10 from 11,047 user reviews) flies into London Heathrow Airport from San Diego 7 times in an average week so prices can vary.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Milton Keynes
Dover
Luton
Slough
Guildford
Hayes
Dartford
Stratford-upon-Avon
Crawley
Brentwood
Chelmsford
Salisbury
Wembley
Folkestone
Romford
Ilford
Cobham
Swindon

Why use momondo?

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

It is quick and easy to find San Diego to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

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

Yes. momondo enables you to select and highlight flights to London from San Diego with this policy.

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

momondo helps you find the best flight between San Diego and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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 not ready to book a flight from San Diego to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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