SAN - LHR

£314 Find Cheap Flights from San Diego to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Diego to Heathrow departing on 13/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Diego to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Diego to London, as well as popular online travel agencies
Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest return fare
£621
Typical prices: £617-£449
Virgin Atlantic
Tue 6/10Tue 27/10
SAN - LHR • 1 stop
Cheapest direct flights
£628
Typical prices: £605-£471
British Airways
Tue 29/9Tue 13/10
SAN - LHR • Direct
Advice from real travellers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Finnair's Economy Comfort offers extra legroom.
British Airways' premium economy adds 18 cm legroom.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Virgin Atlantic
Cheapest • from £621 (return)
British Airways
Best reviews • 6.7 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
Every day
You can fly direct with British Airways. Average duration is 10h 42m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
When to book
2 weeks
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 21% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 20% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Heathrow!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from San Diego to Heathrow (SAN-LHR)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from San Diego to Heathrow that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from San Diego to Heathrow

Tue, 6 Oct - Tue, 27 Oct
Virgin Atlantic Logo
13:30 - 11:00
SAN
-
LHR
13h 30m
1 stop
Virgin Atlantic Logo
06:30 - 13:05
LHR
-
SAN
13h 35m
1 stop
£621Virgin Atlantic
Tue, 29 Sep - Tue, 13 Oct
British Airways Logo
19:40 - 14:20
SAN
-
LHR
10h 40mdirect
British Airways Logo
11:35 - 14:55
LHR
-
SAN
11h 20mdirect
£628British Airways
Tue, 29 Sep - Tue, 13 Oct
British Airways Logo
15:04 - 12:15
SAN
-
LHR
13h 11m
1 stop
British Airways Logo
14:30 - 17:50
LHR
-
SAN
11h 20mdirect
£629British Airways
Wed, 19 Aug - Fri, 4 Sep
British Airways Logo
19:40 - 14:20
SAN
-
LHR
10h 40mdirect
British Airways Logo
14:30 - 17:50
LHR
-
SAN
11h 20mdirect
£632British Airways
Tue, 29 Sep - Tue, 13 Oct
British Airways Logo
11:30 - 09:05
SAN
-
LHR
13h 35m
1 stop
British Airways Logo
16:25 - 23:51
LHR
-
SAN
15h 26m
1 stop
£633British Airways
Tue, 6 Oct - Tue, 27 Oct
Scandinavian Airlines Logo
11:05 - 17:40
SAN
-
LHR
22h 35m
2 stops
Scandinavian Airlines Logo
06:40 - 23:45
LHR
-
SAN
24h 05m
2 stops
£633Scandinavian Airlines
Wed, 2 Sep - Wed, 16 Sep
Virgin Atlantic Logo
10:00 - 10:15
SAN
-
LHR
16h 15m
1 stop
Virgin Atlantic Logo
20:55 - 11:50
LHR
-
SAN
22h 55m
1 stop
£634Virgin Atlantic
Fri, 9 Oct - Fri, 23 Oct
Scandinavian Airlines Logo
07:00 - 13:35
SAN
-
LHR
22h 35m
2 stops
Scandinavian Airlines Logo
07:05 - 23:45
LHR
-
SAN
24h 40m
2 stops
£636Scandinavian Airlines
Mon, 14 Sep - Thu, 15 Oct
British Airways Logo
16:45 - 11:30
SAN
-
LHR
10h 45mdirect
British Airways Logo
14:30 - 17:50
LHR
-
SAN
11h 20mdirect
£637British Airways
Tue, 22 Sep - Tue, 29 Sep
KLM Logo
14:00 - 13:15
SAN
-
LHR
15h 15m
1 stop
KLM Logo
06:30 - 11:50
LHR
-
SAN
13h 20m
1 stop
£638KLM
Booking Insights

KAYAK’s insights & trends for San Diego to Heathrow flights

Get data-powered insights and trends into flights from San Diego to Heathrow to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from San Diego to London Heathrow Airport?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from San Diego to London Heathrow Airport departing in October.

What’s the cheapest day of the week to fly from San Diego to London Heathrow Airport?

The average price of all round-trip flights from San Diego to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from San Diego to London Heathrow Airport, look for departures on Mondays and avoid leaving on a Friday, as it's usually the priciest day. When flying back from London Heathrow Airport, Tuesday is the cheapest day to fly and Saturday is the most expensive.

What is the cheapest month to fly from San Diego to London Heathrow Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Diego to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from San Diego to London Heathrow Airport is September, where tickets cost £539 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is £1,044 and £870 respectively.

Can I save money by flying with a stopover from San Diego to London Heathrow Airport?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of £661, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from San Diego to London Heathrow Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Diego to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from San Diego to London Heathrow Airport, you should book around 2 weeks before departure, which saves you about 21% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Find deals
Expert advice

Expert advice for your flight from San Diego to Heathrow

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on Finnair

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Marisa Garcia

Marisa Garcia

Expert on Iberia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialising in airline interiors and regulations. 10 years ago, she pivoted to journalism. She shares her insights in leading aviation, travel and business publications and on her site, FlightChic.

Read more
Duncan Madden

Duncan Madden

Expert on British Airways

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Read more

Good to know - Cheap tickets from San Diego to London Heathrow Airport

Low seasonFebruary
Cheapest flight£314
Best time to beat the crowds (16% less expensive on average)
Most popular time to fly (55% more expensive on average)
Flight from San Diego to London Heathrow Airport

When to book flights from San Diego to Heathrow

Are your dates flexible? Find out the best times to travel from San Diego to Heathrow based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking San Diego to London Heathrow Airport flights

  • What is the cheapest flight from San Diego to London Heathrow Airport?

    In the last 3 days, the lowest price for a flight from San Diego to London Heathrow Airport was £314 for a one-way ticket and £621 for a return.

  • Which airlines offer Wi-Fi service onboard planes from San Diego to London Heathrow Airport?

    All the following airlines offer inflight Wi-Fi service on the San Diego to London Heathrow Airport flight route: British Airways, Finnair, Iberia, Lufthansa, United Airlines, American Airlines, and Vueling.

  • Which aircraft models fly most regularly from San Diego to London Heathrow Airport?

    The Boeing 777 is the aircraft model that flies most regularly on the San Diego to London Heathrow Airport flight route.

  • Which airline alliances offer flights from San Diego to London Heathrow Airport?

    oneworld is the only airline alliance operating flights between San Diego and London Heathrow Airport.

  • On which days can I fly direct from San Diego to London Heathrow Airport?

    There are direct flights from San Diego to London Heathrow Airport on a daily basis.

  • How does KAYAK find such low prices on flights from San Diego to London Heathrow Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Diego to London Heathrow Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Diego to London Heathrow Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from San Diego is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Diego to London Heathrow Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London Heathrow Airport with an airline and back to San Diego with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Diego to London Heathrow Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London Heathrow Airport from San Diego up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from San Diego to London Heathrow Airport

  • Looking for a cheap flight from London Heathrow Airport to San Diego? 25% of our users found flights on this route for London Heathrow Airport or less round-trip.

Prefer to fly direct from San Diego to London Heathrow Airport?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from San Diego to London Heathrow.
Find which airlines fly direct from San Diego Airport to London Heathrow Airport, which days they fly and book direct flights.

Direct departures

San Diego to London Heathrow

Monday

British Airways

British Airways

Tuesday

British Airways

British Airways

Wednesday

British Airways

British Airways

Thursday

British Airways

British Airways

Friday

British Airways

British Airways

Saturday

British Airways

British Airways

Sunday

British Airways

British Airways

See more direct flights

Direct returns

London Heathrow to San Diego

Monday

British Airways

British Airways

Tuesday

British Airways

British Airways

Wednesday

British Airways

British Airways

Thursday

British Airways

British Airways

Friday

British Airways

British Airways

Saturday

British Airways

British Airways

Sunday

British Airways

British Airways

See more direct flights

Reviews of the top airline flying from San Diego to Heathrow

 
See real verified KAYAK customer reviews for airlines flying from San Diego to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Diego to Heathrow? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.7
British AirwaysOverall score based on 7937 reviews
6.8Comfort
6.9Boarding
6.4Entertainment
7.7Crew
6.4Food
Airline reviews

Boarding was orderly, pilot and flight attendants were nice, entertainment options were good, and low sodium meals were quite tasty.

10.0 ExcellentAnonymous, Apr 2026
SFO - LHR
Read more British Airways reviews

Boarding was orderly, pilot and flight attendants were nice, entertainment options were good, and low sodium meals were quite tasty.

The whole experience was excellent, O can say out from Miami the best airline to travel with for any European destination. Since the ground staff to the inflight crew attention was great, service on board 10 of 10. Finally the 380 is very confortable and nice to travel.

All crew except 1 were excellent. When I asked assistance with business class seat conversion to a bed (not being familiar as never used before but have numerous times with other airlines) crew member helped very reluctantly. I should have told her that business class seat conversion is totally different in each airline such as Delta, New Zealand Air and United. Sorry it was my 1st time with America Airlines. Now I know, I won't bother asking assistance in future.

The seats in Premier Economy were very comfortable. The food was better than average. The way British Airways handled our seating was atrocious.

Flight delayed, connection was not at gate listed and so missed, staff were rude at Heathrow, phone tree stupid and difficult, took me 21 actual hours to reach my destination. Almost lost my hotel reservation after walking in a strange city alone after midnight because they would not put me up in a hotel at sfo or heathrow. I will never fly BA again and will tell all people and Instagram followers never to fly BA.

Overall ok. Best part has always been the sundae dessert.

I’ve never been on a trans-Atlantic (or Pacific) flight where the seats don’t recline—not even a little. I asked my seat mate when BA starting doing this and he said “Oh, a few years ago.” I couldn’t sleep, with my head falling forward waking me continuously, and came off the plane incredibly stiff. I booked a Premium Economy seat to get a more comfortable seat, which was worse than most basic Economy seats I’ve ever booked.

Wish the food and overall service was better. They treat Business class passengers same as economy

They had us seating down for one hour just waiting on the plane

Flying with BA is always a good experience—even in economy class. It is better if in business and first class. Timely, breeze through security and timely connections

Everything you need to know for your flight from San Diego to Heathrow

Information on your arrival and departure airports

San Diego (SAN)
Heathrow (LHR)