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Cheap flights from San Diego to London from £166

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 28/1. 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

Enter your travel dates to find the best prices.
Air Canada Logo
12:45 - 13:20
SAN
-
LHR
16h 35m
1 stop
Air Canada Logo
08:40 - 20:43
LHR
-
SAN
20h 03m
2 stops
£472Air Canada
Wed, 29 Apr - Fri, 8 May
Delta Logo
06:30 - 08:05
SAN
-
LHR
17h 35m
2 stops
Delta Logo
06:30 - 12:05
LHR
-
SAN
13h 35m
1 stop
£474Delta
Sun, 8 Feb - Tue, 24 Feb
British Airways Logo
13:19 - 10:00
SAN
-
LHR
12h 41m
1 stop
British Airways Logo
17:25 - 20:41
LHR
-
SAN
35h 16m
2 stops
£474British Airways
Tue, 3 Feb - Mon, 9 Feb
British Airways Logo
19:40 - 14:20
SAN
-
LHR
10h 40mdirect
British Airways Logo
14:30 - 17:50
LHR
-
SAN
11h 20mdirect
£475British Airways
Tue, 28 Apr - Tue, 5 May
Lufthansa Logo
18:22 - 19:40
SAN
-
LHR
17h 18m
2 stops
Lufthansa Logo
15:00 - 20:50
LHR
-
SAN
13h 50m
1 stop
£476Lufthansa
Tue, 28 Apr - Thu, 14 May
United Airlines Logo
18:00 - 20:35
SAN
-
LHR
18h 35m
2 stops
United Airlines Logo
11:35 - 22:35
LHR
-
SAN
19h 00m
1 stop
£477United Airlines
Sat, 31 Jan - Thu, 12 Feb
Delta Logo
07:30 - 10:30
SAN
-
LHR
20h 00m
1 stop
Delta Logo
06:30 - 18:22
LHR
-
SAN
19h 52m
2 stops
£477Delta
Sun, 22 Mar - Tue, 31 Mar
JetBlue Logo
21:00 - 20:45
SAN
-
LHR
15h 45m
1 stop
JetBlue Logo
08:05 - 20:00
LHR
-
SAN
19h 55m
1 stop
£478JetBlue
Thu, 5 Feb - Mon, 23 Feb
British Airways Logo
14:16 - 12:10
SAN
-
LHR
13h 54m
1 stop
British Airways Logo
11:35 - 14:55
LHR
-
SAN
11h 20mdirect
£479British Airways
Tue, 28 Apr - Tue, 5 May
Delta Logo
06:15 - 08:45
SAN
-
LHR
18h 30m
2 stops
Delta Logo
11:30 - 22:47
LHR
-
SAN
19h 17m
2 stops
£480Delta
Wed, 28 Jan - Wed, 11 Feb

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
3 Feb
SAN13:19San Diego
12h 41m
1 stop
LHR10:00London Heathrow
9 Feb
LHR17:25London Heathrow
35h 16m
2 stops
SAN20:41San Diego
£474
British Airways
28 Apr
SAN19:40San Diego
10h 40m
LHR14:20London Heathrow
5 May
LHR14:30London Heathrow
11h 20m
SAN17:50San Diego
£475
British Airways
28 Apr
SAN14:16San Diego
13h 54m
1 stop
LHR12:10London Heathrow
5 May
LHR11:35London Heathrow
11h 20m
SAN14:55San Diego
£479

Lufthansa flights from San Diego to London Heathrow Airport

Our best Lufthansa deals on San Diego to London Heathrow Airport flight tickets
Lufthansa
25 Jan
SAN11:08San Diego
20h 42m
2 stops
LHR15:50London Heathrow
2 Feb
LHR20:15London Heathrow
29h 13m
2 stops
SAN17:28San Diego
£474
Lufthansa
28 Apr
SAN18:22San Diego
17h 18m
2 stops
LHR19:40London Heathrow
14 May
LHR15:00London Heathrow
13h 50m
1 stop
SAN20:50San Diego
£476
Lufthansa
5 Mar
SAN17:35San Diego
14h 15m
1 stop
LHR15:50London Heathrow
19 Mar
LHR08:45London Heathrow
15h 00m
1 stop
SAN16:45San Diego
£487

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 16 January 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

Wed 29/4

12:45-13:20

1 stop16h 35m

London Heathrow

Fri 8/5

08:40-20:43

2 stops20h 03m

£472

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Sun 8/2

06:30-08:05

2 stops17h 35m

London Heathrow

Tue 24/2

06:30-12:05

1 stop13h 35m

£474

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Tue 3/2

13:19-10:00

1 stop12h 41m

London Heathrow

Mon 9/2

17:25-20:41

2 stops35h 16m

£474

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Tue 28/4

19:40-14:20

Nonstop10h 40m

London Heathrow

Tue 5/5

14:30-17:50

Nonstop11h 20m

£475

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Tue 28/4

18:22-19:40

2 stops17h 18m

London Heathrow

Thu 14/5

15:00-20:50

1 stop13h 50m

£476

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Sat 31/1

18:00-20:35

2 stops18h 35m

London Heathrow

Thu 12/2

11:35-22:35

1 stop19h 00m

£477

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Sun 22/3

07:30-10:30

1 stop20h 00m

London Heathrow

Tue 31/3

06:30-18:22

2 stops19h 52m

£477

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Thu 5/2

21:00-20:45

1 stop15h 45m

London Heathrow

Mon 23/2

08:05-20:00

1 stop19h 55m

£478

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Tue 28/4

14:16-12:10

1 stop13h 54m

London Heathrow

Tue 5/5

11:35-14:55

Nonstop11h 20m

£479

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Wed 28/1

06:15-08:45

2 stops18h 30m

London Heathrow

Wed 11/2

11:30-22:47

2 stops19h 17m

£480

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 £535. The month of November is another great option to travel to London Heathrow Airport, with average flight prices from San Diego averaging around £540.

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 £480. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Friday is £906.

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 £686. 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 evening when prices are £697 on average. Flights to London Heathrow Airport from San Diego in the evening 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 £666 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 £570 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?

No. A direct flight is the cheapest option for a flight between San Diego to London Heathrow Airport.

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 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

£376

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 £376. The best return flight deal from San Diego to London Heathrow Airport found on momondo in the last 72 hours is £583.
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?

    San Diego and London Heathrow are 5468.7 mi apart from one another. 10h 35m 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 £509Free CancellationRating
6.7
7,680 reviews
Search British Airways flights

  • British Airways Flights From San Diego to London Heathrow Airport

    Across 5 British Airways flights from San Diego to London Heathrow Airport this week, the average price was £697, with the best British Airways deals starting from £509 round-trip. 7,680 users have rated British Airways on momondo, with an average score of 6.7/10.

Travelling to a place near London?

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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.

An easier way to manage your London Heathrow Airport trip

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