SAN - LHR

£289 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 8/1. 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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Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest return fare
£476
Typical prices: £518-£674
Lufthansa
Tue 7/4Thu 23/4
SAN - LHR • 1 stop
Cheapest direct flights
£491
Typical prices: £505-£681
British Airways
Tue 3/2Fri 13/2
SAN - LHR • Direct
Our travellers' advice
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
When to book
2 weeks
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 18% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 19% price drop
April
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, 7 Apr - Thu, 23 Apr
Lufthansa Logo
12:37 - 09:40
SAN
-
LHR
13h 03m1 stop
Lufthansa Logo
07:25 - 15:25
LHR
-
SAN
16h 00m1 stop
£476Lufthansa
Tue, 28 Apr - Tue, 5 May
Lufthansa Logo
12:10 - 11:35
SAN
-
LHR
15h 25m1 stop
Lufthansa Logo
07:25 - 15:25
LHR
-
SAN
16h 00m1 stop
£477Lufthansa
Sun, 11 Jan - Fri, 23 Jan
JetBlue Logo
21:00 - 20:45
SAN
-
LHR
15h 45m1 stop
JetBlue Logo
08:05 - 19:50
LHR
-
SAN
19h 45m1 stop
£478JetBlue
Wed, 22 Apr - Wed, 29 Apr
Lufthansa Logo
16:26 - 14:10
SAN
-
LHR
13h 44m1 stop
Lufthansa Logo
07:25 - 15:25
LHR
-
SAN
16h 00m1 stop
£478Lufthansa
Mon, 12 Jan - Tue, 27 Jan
Multiple Airlines Logo
18:05 - 07:10
SAN
-
LHR
29h 05m2 stops
Multiple Airlines Logo
11:10 - 15:45
LHR
-
SAN
36h 35m1 stop
£479Multiple Airlines
Mon, 16 Feb - Mon, 23 Feb
Lufthansa Logo
11:05 - 13:30
SAN
-
LHR
18h 25m1 stop
Lufthansa Logo
20:15 - 18:48
LHR
-
SAN
30h 33m2 stops
£480Lufthansa
Mon, 23 Feb - Wed, 4 Mar
Lufthansa Logo
12:55 - 09:40
SAN
-
LHR
12h 45m1 stop
Lufthansa Logo
07:30 - 20:51
LHR
-
SAN
21h 21m2 stops
£481Lufthansa
Mon, 12 Jan - Tue, 27 Jan
Multiple Airlines Logo
18:05 - 11:50
SAN
-
LHR
33h 45m1 stop
Multiple Airlines Logo
11:10 - 15:45
LHR
-
SAN
36h 35m1 stop
£481Multiple Airlines
Mon, 12 Jan - Tue, 27 Jan
JetBlue Logo
21:15 - 21:40
SAN
-
LHR
16h 25m1 stop
JetBlue Logo
12:20 - 14:18
LHR
-
SAN
33h 58m1 stop
£482JetBlue
Tue, 10 Mar - Mon, 16 Mar
Multiple Airlines Logo
12:45 - 11:50
SAN
-
LHR
16h 05m1 stop
Multiple Airlines Logo
19:15 - 16:45
LHR
-
SAN
28h 30m1 stop
£483Multiple Airlines
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 April.

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 Sunday 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 October, where tickets cost £537 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is £1,035 and £896 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.

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 2 stops stopover the cheapest option at £699 on average.

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 18% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 7 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.
Airlines
Finnair

Finnair's Economy Comfort offers extra legroom for a small fee, enhancing long-haul comfort.


Finnair's A350 features lower cabin altitude and higher humidity, improving passenger comfort on long flights.

Read more about FinnairBy Gabriel Leigh
Iberia

Iberia's business class offers all-aisle access and private suites on A350-900 for restful long-haul flights.


Iberia's Premium Economy provides wider seats, adjustable headrests, and USB power outlets for long-haul comfort.

Read more about IberiaBy Marisa Garcia
British Airways

British Airways' premium economy offers 18 cm extra legroom, enhancing comfort on long-haul flights.


BA's Executive Club loyalty programme offers Avios points, enhancing value for frequent flyers.

Read more about British AirwaysBy Duncan Madden
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on Finnair

Gabriel Leigh

Gabriel Leigh

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 Garcia

Marisa Garcia

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 Madden

Duncan Madden

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£289
Best time to beat the crowds (18% less expensive on average)
Most popular time to fly and prices are also 13% lower 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 £289 for a one-way ticket and £476 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: American Airlines, Iberia, United Airlines, Vueling, SWISS, and Lufthansa.

  • 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 £361 or less one-way.

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 7575 reviews
6.7Comfort
7.6Crew
6.9Boarding
6.4Food
6.4Entertainment
Airline reviews

Check in was was and the agent was very friendly and helpful The lounge was nice...boarding was straight from the lounge Everything worked at our seats, and video entertainment was good ..food was mediocre

8.0 ExcellentAnonymous, Dec 2025
SFO - LHR
Read more British Airways reviews

Check in was was and the agent was very friendly and helpful The lounge was nice...boarding was straight from the lounge Everything worked at our seats, and video entertainment was good ..food was mediocre

The flight was excellent in World Travellor plus. Well worth the extra money. Boarding at Phoenix was the usual poorly organized event. Very stressful.

Although business class, the seating was really cramped. The food was so so.

Smooth trip no turbulence which is always a bonus for me lol! In cattle class so an element of being a bit squished (but not as bad as other shorter haul airlines) smaller plane than the one we flew out on and entertainment system wasn’t as modern but still definitely passed the time. Lovely crew x

Flying on the Boeing 787 from Seattle to London was everything that I expected. Every thing was great.

Seat pitch is not enough to eat comfortably. When seat in front is reclined, your screen comes closer to your face. Ryanair seats are actually more comfortable.

The leg from Portland to Heathrow was great for a business class ticket. The BA leg from Heathrow to Lisbon was terrible. Basically coach seating with an empty seat between you and next passenger. Absolutely no leg room. Should not have been charged for business class and it was a 3 hour flight.

The flat beds. Other than that, the place was not clean.

Moved me away from my family and refused to fix it.

I have always been pleased with their service. Would not change a thing

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)