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Cheap flights from San Diego to London Heathrow Airport from $340

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 Heathrow Airport departing on 4/28. 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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0 bags

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Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from San Diego to London.
Iberia Logo
7:50 pm - 2:20 pmSAN-LHR
10h 30mnonstop
Iberia Logo
2:55 pm - 6:00 pmLHR-SAN
11h 05mnonstop
$566Iberia
Find Deal
Wed, Sep 24 - Wed, Oct 22
Iberia Logo
3:30 pm - 2:25 pmSAN-LHR
14h 55m1 stop
Iberia Logo
2:55 pm - 6:00 pmLHR-SAN
11h 05mnonstop
$570Iberia
Find Deal
Wed, Sep 24 - Wed, Oct 22
British Airways Logo
7:50 pm - 2:20 pmSAN-LHR
10h 30mnonstop
British Airways Logo
11:30 am - 2:50 pmLHR-SAN
11h 20mnonstop
$597British Airways
Find Deal
Wed, Jul 30 - Wed, Aug 20
British Airways Logo
2:50 pm - 12:15 pmSAN-LHR
13h 25m1 stop
British Airways Logo
11:30 am - 2:50 pmLHR-SAN
11h 20mnonstop
$601British Airways
Find Deal
Tue, Aug 5 - Wed, Aug 20
United Airlines Logo
4:05 pm - 12:20 pmSAN-LHR
12h 15m1 stop
United Airlines Logo
7:25 am - 3:25 pmLHR-SAN
16h 00m1 stop
$611United Airlines
Find Deal
Wed, Apr 30 - Tue, May 6
United Airlines Logo
8:45 am - 9:40 amSAN-LHR
16h 55m1 stop
United Airlines Logo
2:05 pm - 1:46 pmLHR-SAN
31h 41m2 stops
$613United Airlines
Find Deal
Wed, Apr 23 - Wed, May 7
Delta Logo
1:30 pm - 1:10 pmSAN-LHR
15h 40m2 stops
Delta Logo
6:30 am - 12:00 pmLHR-SAN
13h 30m1 stop
$624Delta
Find Deal
Mon, May 5 - Thu, May 22
Delta Logo
11:02 am - 10:00 amSAN-LHR
14h 58m1 stop
Delta Logo
8:40 am - 6:51 pmLHR-SAN
18h 11m2 stops
$629Delta
Find Deal
Wed, Apr 30 - Wed, May 7
Lufthansa Logo
5:15 pm - 3:40 pmSAN-LHR
14h 25m1 stop
Lufthansa Logo
7:25 am - 3:25 pmLHR-SAN
16h 00m1 stop
$678Lufthansa
Find Deal
Wed, Apr 16 - Mon, Apr 21
Lufthansa Logo
5:15 pm - 6:25 pmSAN-LHR
17h 10m1 stop
Lufthansa Logo
6:30 am - 3:25 pmLHR-SAN
16h 55m2 stops
$722Lufthansa
Find Deal
Wed, Apr 16 - Sun, Apr 27

Iberia flights from San Diego to London Heathrow Airport

Our best Iberia deals on San Diego to London Heathrow Airport flight tickets
Iberia
Sep 24
SAN7:50 pmSan Diego
10h 30m
LHR2:20 pmLondon Heathrow
Oct 22
LHR2:55 pmLondon Heathrow
11h 05m
SAN6:00 pmSan Diego
Iberia
Sep 24
SAN3:30 pmSan Diego
14h 55m
1 stop
LHR2:25 pmLondon Heathrow
Oct 22
LHR2:55 pmLondon Heathrow
11h 05m
SAN6:00 pmSan Diego
Iberia
Sep 22
SAN1:12 pmSan Diego
15h 03m
1 stop
LHR12:15 pmLondon Heathrow
Sep 30
LHR12:15 pmLondon Heathrow
15h 04m
1 stop
SAN7:19 pmSan Diego

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
Jul 30
SAN7:50 pmSan Diego
10h 30m
LHR2:20 pmLondon Heathrow
Aug 20
LHR11:30 amLondon Heathrow
11h 20m
SAN2:50 pmSan Diego
British Airways
Aug 5
SAN2:50 pmSan Diego
13h 25m
1 stop
LHR12:15 pmLondon Heathrow
Aug 20
LHR11:30 amLondon Heathrow
11h 20m
SAN2:50 pmSan Diego
British Airways
May 5
SAN4:40 pmSan Diego
10h 45m
LHR11:25 amLondon Heathrow
May 21
LHR11:30 amLondon Heathrow
11h 20m
SAN2:50 pmSan Diego

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 January is, on average, the cheapest month to fly to London Heathrow Airport from San Diego, with most prices found around $719. If you’re not able to fly to London Heathrow Airport in January, then February is your next best option. Flight prices from San Diego to London Heathrow Airport during February 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 $922. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $1,116.

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 $997.

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 7 weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $909 when searching 7 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 $814 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 April 2025, prices for San Diego to London Heathrow Airport flights are approximately 26% 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

$340

Fastest flight time

10h 30m

Direct flights

Mon, Tue, Thu, Fri, Sat and Sun
The best one-way flight to London Heathrow Airport from San Diego in the past 72 hours is $340. The best round-trip flight deal from San Diego to London Heathrow Airport found on momondo in the last 72 hours is $566.
The fastest flight from San Diego to London Heathrow Airport takes 10h 30m
Direct flights go from San Diego to London Heathrow Airport on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. Airlines offering direct flights are: Finnair, Aer Lingus and Iberia.

  • 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 30m 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
KLMPriceFrom $580Free CancellationRating
7.8
1,323 reviews
Search KLM flights
LufthansaPriceFrom $590Free CancellationRating
6.7
6,963 reviews
Search Lufthansa flights
FinnairPriceFrom $595Free CancellationRating
7.6
1,267 reviews
Search Finnair flights
JetBluePriceFrom $597Free CancellationRating
7.3
2,922 reviews
Search JetBlue flights
IberiaPriceFrom $603Free CancellationRating
7.0
2,655 reviews
Search Iberia flights
Virgin AtlanticPriceFrom $641Free CancellationRating
7.4
636 reviews
Search Virgin Atlantic flights
American AirlinesPriceFrom $646Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
British AirwaysPriceFrom $650Free CancellationRating
6.6
6,715 reviews
Search British Airways flights
United AirlinesPriceFrom $653Free CancellationRating
7.4
8,615 reviews
Search United Airlines flights
DeltaPriceFrom $678Free CancellationRating
8.0
7,898 reviews
Search Delta flights
  • Alaska Airlines Flights From San Diego to London Heathrow Airport

    Alaska Airlines is one of the most popular airlines flying from San Diego to London Heathrow Airport, operating 13 flights/week on average for this route. A good Alaska Airlines flight deal for San Diego to London Heathrow Airport starts from $828 round-trip, up to an average price of $951. Our users have rated Alaska Airlines at 8.0/10.

  • Finnair Flights From San Diego to London Heathrow Airport

    $595 is the best Finnair flight deal from San Diego to London Heathrow Airport found on momondo over the last 72 hours. The average Finnair ticket price found was closer to $692, however, with flight time and availability significantly affecting the price. Finnair (7.6/10 from 1,267 user reviews) flies into London Heathrow Airport from San Diego 6 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
Croydon
Luton
Guildford
Hayes
Slough
Dartford
Stansted
Ilford
Salisbury
Swindon
Dover
Canterbury
Colchester
Milton Keynes
Horley
Wembley
Chelmsford
Eastbourne

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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