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Cheap flights from San Diego to London from $237

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 2/2. 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 round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
7:40 pm - 2:20 pm
SAN
-
LHR
10h 40mnonstop
British Airways Logo
2:30 pm - 5:50 pm
LHR
-
SAN
11h 20mnonstop
$633British Airways
Sun, Apr 26 - Tue, May 5
British Airways Logo
1:19 pm - 10:00 am
SAN
-
LHR
12h 41m1 stop
British Airways Logo
12:50 pm - 4:10 pm
LHR
-
SAN
11h 20mnonstop
$635British Airways
Mon, Jan 26 - Tue, Feb 10
British Airways Logo
1:58 pm - 11:35 am
SAN
-
LHR
13h 37m1 stop
British Airways Logo
12:50 pm - 5:10 pm
LHR
-
SAN
11h 20mnonstop
$636British Airways
Mon, Jan 26 - Fri, Mar 20
British Airways Logo
6:30 am - 6:35 am
SAN
-
LHR
16h 05m1 stop
British Airways Logo
12:50 pm - 5:10 pm
LHR
-
SAN
11h 20mnonstop
$637British Airways
Wed, Mar 4 - Fri, Mar 13
British Airways Logo
1:26 pm - 10:30 am
SAN
-
LHR
13h 04m1 stop
British Airways Logo
3:15 pm - 11:16 pm
LHR
-
SAN
16h 01m1 stop
$638British Airways
Mon, Apr 13 - Fri, Apr 24
Delta Logo
1:29 pm - 10:00 am
SAN
-
LHR
12h 31m1 stop
Delta Logo
9:00 am - 7:08 pm
LHR
-
SAN
18h 08m2 stops
$639Delta
Mon, Jan 26 - Tue, Feb 10
Multiple Airlines Logo
6:30 am - 7:10 am
SAN
-
LHR
16h 40m2 stops
Multiple Airlines Logo
1:00 pm - 12:03 pm
LHR
-
SAN
31h 03m2 stops
$640Multiple Airlines
Tue, Feb 10 - Tue, Feb 24
JetBlue Logo
9:00 pm - 10:00 pm
SAN
-
LHR
17h 00m1 stop
JetBlue Logo
7:45 am - 7:49 pm
LHR
-
SAN
20h 04m1 stop
$641JetBlue
Fri, Jan 30 - Sun, Feb 8
British Airways Logo
3:12 pm - 8:35 am
SAN
-
LHR
33h 23m1 stop
British Airways Logo
7:40 pm - 8:20 pm
LHR
-
SAN
31h 40m2 stops
$642British Airways
Sat, Jan 24 - Tue, Mar 17
Air Canada Logo
12:45 pm - 7:10 am
SAN
-
LHR
34h 25m2 stops
Air Canada Logo
1:00 pm - 12:03 pm
LHR
-
SAN
31h 03m2 stops
$643Air Canada
Mon, Feb 23 - Thu, Mar 5

Air Canada flights from San Diego to London Heathrow Airport

Our best Air Canada deals on San Diego to London Heathrow Airport flight tickets
Air Canada
Jan 13
SAN12:45 pmSan Diego
34h 25m
2 stops
LHR7:10 amLondon Heathrow
Jan 21
LHR1:25 pmLondon Heathrow
30h 38m
2 stops
SAN12:03 pmSan Diego
$638
Air Canada
Feb 10
SAN6:05 pmSan Diego
29h 05m
2 stops
LHR7:10 amLondon Heathrow
Feb 24
LHR1:00 pmLondon Heathrow
31h 03m
2 stops
SAN12:03 pmSan Diego
$640
Air Canada
Feb 23
SAN6:05 pmSan Diego
29h 05m
2 stops
LHR7:10 amLondon Heathrow
Mar 18
LHR1:00 pmLondon Heathrow
30h 03m
2 stops
SAN12:03 pmSan Diego
$643

Delta flights from San Diego to London Heathrow Airport

Our best Delta deals on San Diego to London Heathrow Airport flight tickets
Delta
Jan 26
SAN9:55 amSan Diego
16h 05m
1 stop
LHR10:00 amLondon Heathrow
Feb 10
LHR11:30 amLondon Heathrow
19h 01m
2 stops
SAN10:31 pmSan Diego
$639
Delta
Jan 13
SAN11:08 amSan Diego
16h 32m
1 stop
LHR11:40 amLondon Heathrow
Jan 20
LHR11:30 amLondon Heathrow
19h 01m
2 stops
SAN10:31 pmSan Diego
$640
Delta
Jan 28
SAN6:15 amSan Diego
18h 30m
2 stops
LHR8:45 amLondon Heathrow
Feb 11
LHR11:30 amLondon Heathrow
19h 17m
2 stops
SAN10:47 pmSan Diego
$644

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 January 8, 2026.
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 4/26

7:40 pm-2:20 pm

Nonstop10h 40m

London Heathrow

Tue 5/5

2:30 pm-5:50 pm

Nonstop11h 20m

$633

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 1/26

1:19 pm-10:00 am

1 stop12h 41m

London Heathrow

Tue 2/10

12:50 pm-4:10 pm

Nonstop11h 20m

$635

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 1/26

1:58 pm-11:35 am

1 stop13h 37m

London Heathrow

Fri 3/20

12:50 pm-5:10 pm

Nonstop11h 20m

$636

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Wed 3/4

6:30 am-6:35 am

1 stop16h 05m

London Heathrow

Fri 3/13

12:50 pm-5:10 pm

Nonstop11h 20m

$637

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 4/13

1:26 pm-10:30 am

1 stop13h 04m

London Heathrow

Fri 4/24

3:15 pm-11:16 pm

1 stop16h 01m

$638

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 1/26

1:29 pm-10:00 am

1 stop12h 31m

London Heathrow

Tue 2/10

9:00 am-7:08 pm

2 stops18h 08m

$639

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Tue 2/10

6:30 am-7:10 am

2 stops16h 40m

London Heathrow

Tue 2/24

1:00 pm-12:03 pm

2 stops31h 03m

$640

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Fri 1/30

9:00 pm-10:00 pm

1 stop17h 00m

London Heathrow

Sun 2/8

7:45 am-7:49 pm

1 stop20h 04m

$641

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Sat 1/24

3:12 pm-8:35 am

1 stop33h 23m

London Heathrow

Tue 3/17

7:40 pm-8:20 pm

2 stops31h 40m

$642

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 2/23

12:45 pm-7:10 am

2 stops34h 25m

London Heathrow

Thu 3/5

1:00 pm-12:03 pm

2 stops31h 03m

$643

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 typical price of a round-trip flight between San Diego and London Heathrow Airport?

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

The month of October is, on average, the cheapest month to fly to London Heathrow Airport from San Diego, with most prices found around $720. If you’re not able to fly to London Heathrow Airport in October, then November is your next best option. Flight prices from San Diego to London Heathrow Airport during November average around $724.

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 $844. The most expensive day to fly to London Heathrow Airport is Thursday, with ticket prices averaging around $954.

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 afternoon. momondo users have found flights departing from San Diego to London Heathrow Airport in the afternoon for as low as $874. 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 evening are often more expensive with an average ticket price of $936.

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 $893 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 $759 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 3% 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 January 2026, prices for San Diego to London Heathrow Airport flights are approximately 41% 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

$370

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 $370. The best round-trip flight deal from San Diego to London Heathrow Airport found on momondo in the last 72 hours is $602.
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 $181Free CancellationRating
7.2
2,891 reviews
Search JetBlue flights
DeltaPriceFrom $552Free CancellationRating
7.9
8,032 reviews
Search Delta flights
FinnairPriceFrom $556Free CancellationRating
7.6
1,346 reviews
Search Finnair flights
United AirlinesPriceFrom $567Free CancellationRating
7.4
9,142 reviews
Search United Airlines flights
British AirwaysPriceFrom $575Free CancellationRating
6.7
7,659 reviews
Search British Airways flights
Scandinavian AirlinesPriceFrom $578Free CancellationRating
7.3
1,637 reviews
Search Scandinavian Airlines flights
IberiaPriceFrom $589Free CancellationRating
7.0
3,079 reviews
Search Iberia flights
American AirlinesPriceFrom $593Free CancellationRating
7.2
11,097 reviews
Search American Airlines flights
Virgin AtlanticPriceFrom $620Free CancellationRating
7.5
678 reviews
Search Virgin Atlantic flights
LufthansaPriceFrom $620Free CancellationRating
6.8
7,698 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

    $593 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 11,095 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
Luton
Hounslow
Milton Keynes
Dover
Slough
Guildford
Hayes
Crawley
Dartford
Stratford-upon-Avon
Brentwood
Salisbury
Watford
Wembley
Cobham
Folkestone
Romford
Richmond
Uxbridge

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.

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