Cheap flights from San Diego to London from £182

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 20/9. 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

British Airways Logo
12:43 - 10:00SAN-LHR
13h 17m1 stop
British Airways Logo
12:50 - 16:10LHR-SAN
11h 20mdirect
£416British Airways
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So, 23 Nov - Mi, 3 Dez
Iberia Logo
06:22 - 08:05SAN-LHR
17h 43m1 stop
Iberia Logo
12:15 - 19:27LHR-SAN
15h 12m1 stop
£417Iberia
Find Deal
So, 14 Sep - Fr, 3 Okt
British Airways Logo
10:04 - 09:00SAN-LHR
14h 56m1 stop
British Airways Logo
14:55 - 18:00LHR-SAN
11h 05mdirect
£417British Airways
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Mo, 1 Sep - Mi, 10 Sep
Delta Logo
07:00 - 07:15SAN-LHR
16h 15m1 stop
Delta Logo
06:15 - 16:00LHR-SAN
17h 45m2 stops
£418Delta
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So, 14 Sep - Mi, 1 Okt
Delta Logo
06:30 - 10:15SAN-LHR
19h 45m1 stop
Delta Logo
06:15 - 16:00LHR-SAN
17h 45m2 stops
£419Delta
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Mo, 8 Sep - Mi, 17 Sep
British Airways Logo
16:40 - 12:50SAN-LHR
12h 10m1 stop
British Airways Logo
10:30 - 17:58LHR-SAN
15h 28m1 stop
£420British Airways
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So, 21 Sep - Do, 9 Okt
Virgin Atlantic Logo
19:46 - 17:15SAN-LHR
13h 29m1 stop
Virgin Atlantic Logo
12:25 - 20:33LHR-SAN
16h 08m1 stop
£426Virgin Atlantic
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So, 21 Sep - So, 28 Sep
 Logo
19:46 - 17:15SAN-LHR
13h 29m1 stop
 Logo
09:00 - 19:06LHR-SAN
18h 06m2 stops
So, 14 Sep - Mi, 1 Okt
 Logo
19:46 - 17:15SAN-LHR
13h 29m1 stop
 Logo
09:00 - 19:06LHR-SAN
18h 06m2 stops
So, 14 Sep - Mi, 1 Okt
Virgin Atlantic Logo
07:00 - 06:25SAN-LHR
15h 25m1 stop
Virgin Atlantic Logo
18:35 - 12:00LHR-SAN
25h 25m1 stop
£449Virgin Atlantic
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So, 14 Sep - Sa, 20 Sep

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
23 Nov
SAN12:43San Diego
13h 17m
1 stop
LHR10:00London Heathrow
3 Dec
LHR12:50London Heathrow
11h 20m
SAN16:10San Diego
British Airways
1 Sept
SAN10:04San Diego
16h 46m
1 stop
LHR10:50London Heathrow
11 Sept
LHR14:55London Heathrow
11h 05m
SAN18:00San Diego
British Airways
1 Sept
SAN10:04San Diego
14h 56m
1 stop
LHR09:00London Heathrow
10 Sept
LHR14:55London Heathrow
11h 05m
SAN18:00San Diego

Delta flights from San Diego to London Heathrow Airport

Our best Delta deals on San Diego to London Heathrow Airport flight tickets
Delta
14 Sept
SAN07:00San Diego
16h 15m
1 stop
LHR07:15London Heathrow
1 Oct
LHR06:15London Heathrow
17h 45m
2 stops
SAN16:00San Diego
Delta
2 Sept
SAN10:00San Diego
16h 15m
1 stop
LHR10:15London Heathrow
26 Sept
LHR09:00London Heathrow
18h 06m
2 stops
SAN19:06San Diego
Delta
31 Aug
SAN22:05San Diego
24h 40m
1 stop
LHR06:45London Heathrow
9 Sept
LHR06:30London Heathrow
13h 30m
1 stop
SAN12:00San Diego

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 22 August 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

So 23/11

12:43-10:00

1 stop13h 17m

London Heathrow

Mi 3/12

12:50-16:10

Nonstop11h 20m

£416

San DiegoLondon

SAN - LHR

SANLHR

San Diego

So 14/9

06:22-08:05

1 stop17h 43m

London Heathrow

Fr 3/10

12:15-19:27

1 stop15h 12m

£417

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mo 1/9

10:04-09:00

1 stop14h 56m

London Heathrow

Mi 10/9

14:55-18:00

Nonstop11h 05m

£417

San DiegoLondon

SAN - LHR

SANLHR

San Diego

So 14/9

07:00-07:15

1 stop16h 15m

London Heathrow

Mi 1/10

06:15-16:00

2 stops17h 45m

£418

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mo 8/9

06:30-10:15

1 stop19h 45m

London Heathrow

Mi 17/9

06:15-16:00

2 stops17h 45m

£419

San DiegoLondon

SAN - LHR

SANLHR

San Diego

So 21/9

16:40-12:50

1 stop12h 10m

London Heathrow

Do 9/10

10:30-17:58

1 stop15h 28m

£420

San DiegoLondon

SAN - LHR

SANLHR

San Diego

So 21/9

19:46-17:15

1 stop13h 29m

London Heathrow

So 28/9

12:25-20:33

1 stop16h 08m

£426

San DiegoLondon

SAN - LHR

SANLHR

San Diego

So 14/9

19:46-17:15

1 stop13h 29m

London Heathrow

Mi 1/10

09:00-19:06

2 stops18h 06m

£431

San DiegoLondon

SAN - LHR

SANLHR

San Diego

So 14/9

19:46-17:15

1 stop13h 29m

London Heathrow

Mi 1/10

09:00-19:06

2 stops18h 06m

£431

San DiegoLondon

SAN - LHR

SANLHR

San Diego

So 14/9

07:00-06:25

1 stop15h 25m

London Heathrow

Sa 20/9

18:35-12:00

1 stop25h 25m

£449

Flights are sorted by cheapest return 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?

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 £540. The month of February is another great option to travel to London Heathrow Airport, with average flight prices from San Diego averaging around £545.

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 £528. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Wednesday is £1,080.

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 £593. 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 £721 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 £673 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 £555 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 13% 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 August 2025, prices for San Diego to London Heathrow Airport flights are approximately 37% 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

£322

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 £322. The best return flight deal from San Diego to London Heathrow Airport found on momondo in the last 72 hours is £620.
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. There are no airlines offering direct flights..
  • How far is San Diego to London Heathrow by plane?

    San Diego and London Heathrow are 5468.7 mi apart from one another. 10h 30m 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 £520Free CancellationRating
6.7
7,292 reviews
Search British Airways flights
  • British Airways Flights From San Diego to London Heathrow Airport

    Across 12 British Airways flights from San Diego to London Heathrow Airport this week, the average price was £972, with the best British Airways deals starting from £698 round-trip. 7,292 users have rated British Airways on momondo, with an average score of 6.7/10.

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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.

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Mi 27/8
Mi 3/9

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