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Cheap flights from San Diego to London from $229

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 3/18. 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

Scandinavian Airlines Logo
3:59 pm - 5:40 pmSAN-LHR
18h 41m2 stops
Scandinavian Airlines Logo
6:40 am - 10:55 pmLHR-SAN
24h 15m2 stops
$558Scandinavian Airlines
Find Deal
Mon, Oct 27 - Mon, Nov 10
Scandinavian Airlines Logo
9:59 am - 5:40 pmSAN-LHR
23h 41m2 stops
Scandinavian Airlines Logo
6:40 am - 11:47 pmLHR-SAN
25h 07m2 stops
$583Scandinavian Airlines
Find Deal
Wed, Nov 12 - Thu, Nov 20
Scandinavian Airlines Logo
10:00 am - 5:40 pmSAN-LHR
23h 40m2 stops
Scandinavian Airlines Logo
6:40 am - 10:55 pmLHR-SAN
24h 15m2 stops
$584Scandinavian Airlines
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Thu, Feb 5 - Thu, Feb 12
Multiple Airlines Logo
12:45 pm - 11:50 amSAN-LHR
15h 05m1 stop
Multiple Airlines Logo
8:45 am - 3:45 pmLHR-SAN
15h 00m1 stop
$590Multiple Airlines
Find Deal
Wed, Nov 5 - Wed, Nov 12
Multiple Airlines Logo
12:45 pm - 11:50 amSAN-LHR
15h 05m1 stop
Multiple Airlines Logo
9:00 am - 10:20 pmLHR-SAN
21h 20m2 stops
$592Multiple Airlines
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Wed, Nov 5 - Wed, Nov 12
British Airways Logo
7:00 pm - 12:35 pmSAN-LHR
10h 35mnonstop
British Airways Logo
12:50 pm - 4:10 pmLHR-SAN
11h 20mnonstop
$624British Airways
Find Deal
Mon, Oct 27 - Mon, Nov 10
British Airways Logo
7:00 pm - 12:35 pmSAN-LHR
10h 35mnonstop
British Airways Logo
12:50 pm - 4:10 pmLHR-SAN
11h 20mnonstop
$625British Airways
Find Deal
Mon, Oct 27 - Mon, Nov 10
United Airlines Logo
8:00 am - 7:40 amSAN-LHR
15h 40m1 stop
United Airlines Logo
11:25 am - 5:18 pmLHR-SAN
13h 53m1 stop
$640United Airlines
Find Deal
Mon, Oct 6 - Wed, Oct 22
United Airlines Logo
11:15 am - 9:40 amSAN-LHR
14h 25m1 stop
United Airlines Logo
4:15 pm - 10:44 pmLHR-SAN
14h 29m1 stop
$643United Airlines
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Mon, Oct 6 - Wed, Oct 22
Lufthansa Logo
5:15 pm - 3:40 pmSAN-LHR
14h 25m1 stop
Lufthansa Logo
7:40 am - 3:45 pmLHR-SAN
16h 05m1 stop
$650Lufthansa
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Tue, Oct 21 - Tue, Nov 4

Scandinavian Airlines flights from San Diego to London Heathrow Airport

Our best Scandinavian Airlines deals on San Diego to London Heathrow Airport flight tickets
Scandinavian Airlines
Oct 27
SAN3:59 pmSan Diego
18h 41m
2 stops
LHR5:40 pmLondon Heathrow
Nov 10
LHR6:40 amLondon Heathrow
24h 15m
2 stops
SAN10:55 pmSan Diego
$558
Find similar
Scandinavian Airlines
Nov 12
SAN9:59 amSan Diego
23h 41m
2 stops
LHR5:40 pmLondon Heathrow
Nov 20
LHR6:40 amLondon Heathrow
25h 07m
2 stops
SAN11:47 pmSan Diego
$583
Find similar
Scandinavian Airlines
Feb 5
SAN10:00 amSan Diego
23h 40m
2 stops
LHR5:40 pmLondon Heathrow
Feb 12
LHR6:40 amLondon Heathrow
24h 15m
2 stops
SAN10:55 pmSan Diego
$584
Find similar

Lufthansa flights from San Diego to London Heathrow Airport

Our best Lufthansa deals on San Diego to London Heathrow Airport flight tickets
Lufthansa
Oct 21
SAN5:15 pmSan Diego
14h 25m
1 stop
LHR3:40 pmLondon Heathrow
Nov 4
LHR7:40 amLondon Heathrow
16h 05m
1 stop
SAN3:45 pmSan Diego
$650
Find similar
Lufthansa
Oct 6
SAN5:15 pmSan Diego
15h 50m
1 stop
LHR5:05 pmLondon Heathrow
Oct 13
LHR8:25 pmLondon Heathrow
31h 27m
2 stops
SAN7:52 pmSan Diego
$722
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 September 22, 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

Mon 10/27

3:59 pm-5:40 pm

2 stops18h 41m

London Heathrow

Mon 11/10

6:40 am-10:55 pm

2 stops24h 15m

$558

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Wed 11/12

9:59 am-5:40 pm

2 stops23h 41m

London Heathrow

Thu 11/20

6:40 am-11:47 pm

2 stops25h 07m

$583

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Thu 2/5

10:00 am-5:40 pm

2 stops23h 40m

London Heathrow

Thu 2/12

6:40 am-10:55 pm

2 stops24h 15m

$584

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Wed 11/5

12:45 pm-11:50 am

1 stop15h 05m

London Heathrow

Wed 11/12

8:45 am-3:45 pm

1 stop15h 00m

$590

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Wed 11/5

12:45 pm-11:50 am

1 stop15h 05m

London Heathrow

Wed 11/12

9:00 am-10:20 pm

2 stops21h 20m

$592

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 10/27

7:00 pm-12:35 pm

Nonstop10h 35m

London Heathrow

Mon 11/10

12:50 pm-4:10 pm

Nonstop11h 20m

$624

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 10/27

7:00 pm-12:35 pm

Nonstop10h 35m

London Heathrow

Mon 11/10

12:50 pm-4:10 pm

Nonstop11h 20m

$625

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 10/6

8:00 am-7:40 am

1 stop15h 40m

London Heathrow

Wed 10/22

11:25 am-5:18 pm

1 stop13h 53m

$640

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 10/6

11:15 am-9:40 am

1 stop14h 25m

London Heathrow

Wed 10/22

4:15 pm-10:44 pm

1 stop14h 29m

$643

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Tue 10/21

5:15 pm-3:40 pm

1 stop14h 25m

London Heathrow

Tue 11/4

7:40 am-3:45 pm

1 stop16h 05m

$650

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 October is, on average, the cheapest month to fly to London Heathrow Airport from San Diego, with most prices found around $731. If you’re not able to fly to London Heathrow Airport in October, then February is your next best option. Flight prices from San Diego to London Heathrow Airport during February average around $733.

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 $881. The most expensive day to fly to London Heathrow Airport is Thursday, with ticket prices averaging around $1,010.

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 afternoon are often more expensive with an average ticket price of $973.

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 $744 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.

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

As of September 2025, prices for San Diego to London Heathrow Airport flights are approximately 25% 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 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

$450

Fastest flight time

10h 30m

Direct flights

Every day
The best one-way flight to London Heathrow Airport from San Diego in the past 72 hours is $450. The best round-trip flight deal from San Diego to London Heathrow Airport found on momondo in the last 72 hours is $682.
The fastest flight from San Diego to London Heathrow Airport takes 10h 30m
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
2,912 reviews
Search JetBlue flights
DeltaPriceFrom $552Free CancellationRating
7.9
7,971 reviews
Search Delta flights
United AirlinesPriceFrom $569Free CancellationRating
7.4
8,922 reviews
Search United Airlines flights
KLMPriceFrom $580Free CancellationRating
7.8
1,387 reviews
Search KLM flights
British AirwaysPriceFrom $587Free CancellationRating
6.7
7,386 reviews
Search British Airways flights
IberiaPriceFrom $588Free CancellationRating
7.0
2,938 reviews
Search Iberia flights
LufthansaPriceFrom $590Free CancellationRating
6.8
7,421 reviews
Search Lufthansa flights
American AirlinesPriceFrom $593Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
FinnairPriceFrom $595Free CancellationRating
7.6
1,326 reviews
Search Finnair flights
Virgin AtlanticPriceFrom $620Free CancellationRating
7.4
664 reviews
Search Virgin Atlantic 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 5 flights/week on average for this route. A good Finnair flight deal for San Diego to London Heathrow Airport starts from $595 round-trip, up to an average price of $738. 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 $914, however, with flight time and availability significantly affecting the price. American Airlines (7.2/10 from 10,000 user reviews) flies into London Heathrow Airport from San Diego 13 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
Hounslow
Gatwick
Luton
Dover
Milton Keynes
Slough
Guildford
Hayes
Dartford
Stansted
Crawley
Chelmsford
Brentwood
Salisbury
Ilford
Folkestone
Colchester
Romford
Swindon
Stratford-upon-Avon

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

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