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Cheap Flights from London to San Diego

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Compare London Heathrow to San Diego International flight deals

Find the cheapest month or even day of the year to fly to San Diego International

Book the best San Diego International fare with no extra fees

Flight deals from London Heathrow to San Diego International

Looking for a cheap last-minute deal or the best return flight from London Heathrow to San Diego International? Find the lowest prices on one-way and return tickets right here.
San Diego.$842 per passenger.Departing Mon, 1 Dec, returning Fri, 12 Dec.Return flight with Virgin Atlantic.Outbound indirect flight with Virgin Atlantic, departs from London Heathrow on Mon, 1 Dec, arriving in San Diego International.Inbound indirect flight with Virgin Atlantic, departs from San Diego International on Fri, 12 Dec, arriving in London Heathrow.Price includes taxes and charges.From $842, select.
San Diego.$842 per passenger.Departing Thu, 8 May, returning Tue, 13 May.Return flight with Delta.Outbound indirect flight with Delta, departs from London Heathrow on Thu, 8 May, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Tue, 13 May, arriving in London Heathrow.Price includes taxes and charges.From $842, select.
San Diego.$844 per passenger.Departing Sat, 22 Nov, returning Sat, 6 Dec.Return flight with British Airways.Outbound indirect flight with British Airways, departs from London Heathrow on Sat, 22 Nov, arriving in San Diego International.Inbound indirect flight with British Airways, departs from San Diego International on Sat, 6 Dec, arriving in London Heathrow.Price includes taxes and charges.From $844, select.
San Diego.$879 per passenger.Departing Fri, 19 Sep, returning Fri, 26 Sep.Return flight with KLM.Outbound indirect flight with KLM, departs from London Heathrow on Fri, 19 Sep, arriving in San Diego International.Inbound indirect flight with KLM, departs from San Diego International on Fri, 26 Sep, arriving in London Heathrow.Price includes taxes and charges.From $879, select.
San Diego.$925 per passenger.Departing Fri, 6 Mar, returning Sat, 21 Mar.Return flight with Virgin Atlantic.Outbound indirect flight with Virgin Atlantic, departs from London Heathrow on Fri, 6 Mar, arriving in San Diego International.Inbound indirect flight with Virgin Atlantic, departs from San Diego International on Sat, 21 Mar, arriving in London Heathrow.Price includes taxes and charges.From $925, select.
San Diego.$925 per passenger.Departing Wed, 5 Nov, returning Wed, 12 Nov.Return flight with Virgin Atlantic.Outbound indirect flight with Virgin Atlantic, departs from London Heathrow on Wed, 5 Nov, arriving in San Diego International.Inbound indirect flight with Virgin Atlantic, departs from San Diego International on Wed, 12 Nov, arriving in London Heathrow.Price includes taxes and charges.From $925, select.
San Diego.$925 per passenger.Departing Fri, 13 Feb, returning Sat, 21 Mar.Return flight with Virgin Atlantic.Outbound indirect flight with Virgin Atlantic, departs from London Heathrow on Fri, 13 Feb, arriving in San Diego International.Inbound indirect flight with Virgin Atlantic, departs from San Diego International on Sat, 21 Mar, arriving in London Heathrow.Price includes taxes and charges.From $925, select.
San Diego.$925 per passenger.Departing Tue, 26 Aug, returning Thu, 11 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from London Heathrow on Tue, 26 Aug, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Thu, 11 Sep, arriving in London Heathrow.Price includes taxes and charges.From $925, select.

Find the cheapest month to fly from London Heathrow to San Diego International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London Heathrow to San Diego International flights are currently cheapest in May.
Apr
Find prices
May
from $842
Jun
from $956
Jul
from $1,073
Aug
from $1,416
Sep
from $879
Oct
from $998
Nov
from $925
Dec
from $842
Jan
from $967
Feb
from $965
Mar
from $925

Direct flights from London Heathrow to San Diego International

London Heathrow to San Diego International: Alternative routes

Compare routes from London Heathrow to San Diego below. You may find an airport to fly into that's cheaper, faster, or easier than San Diego International.

London to San Diego: Flight information

The things to know before you go.
Cheapest flight found$842
Cheapest month to flyDecember
Average flight time11 hrs, 13 mins
Most popular airlineAlaska Airlines
Average flights per week65

Finding cheap flights from London Heathrow to San Diego International: Frequently asked questions

The best price we found for a return flight from London Heathrow to San Diego International is $842. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
11 hours and 13 minutes is the average flight time from London Heathrow to San Diego International.
Alaska Airlines, American Airlines and British Airways fly direct from London Heathrow to San Diego International.
As of April 2025, there are 65 flights per week flying from London Heathrow to San Diego International.
The cheapest month to fly from London Heathrow to San Diego International is usually April 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from London Heathrow Airport to San Diego International Airport on Monday, 1 December 2025.
Yes – the average flight time is 11 hours and 13 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Diego International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Diego is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Virgin Atlantic and British Airways offer the cheapest flight tickets to San Diego International.

Travelling from London Heathrow Airport (LHR) to San Diego International Airport (SAN): what you need to know

  • Around 11 hours 10 minutes is how long you'll be travelling on a direct flight from London Heathrow Airport to San Diego International Airport.

  • San Diego's timezone is UTC-7, making San Diego seven hours behind London.

  • Flights from LHR to SAN start at 12:15 — the first with British Airways. The latest departure is at 15:30 with British Airways. Overall, you can choose from 17 weekly London Heathrow Airport to San Diego International Airport flights.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for stress-free travel. Be at the airport with enough time to board your LHR to SAN flight.

  • Flying during a peak month such as July? Major public holidays and other popular seasons can mean longer queues at airport checkpoints. Play it safe and get there up to four hours ahead of an international flight and two hours before domestic departures.

  • British Airways offers direct flights from London Heathrow Airport to San Diego International Airport. Book with this popular carrier, then get ready to discover the sights in San Diego — and maybe even more of United States if you have time.

  • The airline most travellers prefer to fly with on this route is British Airways.

  • With 68.97% of its services landing on schedule, British Airways is the most punctual carrier offering LHR to SAN flights.

  • We make it a cinch to book a flight with a stopover. To see your options for tickets from London Heathrow Airport to San Diego International Airport, uncheck 'Direct flights only.' Then, choose a flight offering a stop long enough to explore your chosen city. Popular stopovers between LHR and SAN include:

    • Harry Reid Airport (formerly McCarran Airport)

    • Denver International Airport

    • Phoenix Sky Harbour International Airport

How to find the cheapest flights from London Heathrow Airport (LHR) to San Diego International Airport (SAN)

  • Right now, $587 is the lowest price we've found for a one-way London Heathrow Airport to San Diego International Airport flight. The best price for a return ticket is $842. Keep in mind that fares could change due to demand when booking.

  • Book six months before your departure date. After looking at the numbers on our calendar, this is how far you'll want to book ahead to secure cheap tickets from LHR to SAN.

  • May is the cheapest month for flights from London Heathrow Airport to San Diego International Airport. If you want to travel during a different time of year, the 'Whole month' tool will show you the lowest prices for every month.

  • Save time searching for cheap flights from LHR to SAN by creating a Price Alert. You'll receive an email or notification on the app when a new low fare is offered.

  • Tailor your flights with filters. Pick your preferred departure and arrival times, total journey duration and airlines. You can also sort the results by 'Fastest,' 'Best' or 'Cheapest' flights from London Heathrow Airport to San Diego International Airport.

Handy information about London Heathrow Airport (LHR)

  • When it comes to the on-time performance of London Heathrow Airport, 68.18% of flights stick to their scheduled arrival time.

  • Central London to London Heathrow Airport is around 31 kilometres. Depending on traffic, it'll take you about 55 minutes to get there if you're ride-sharing, catching a cab or driving.

  • The journey when using public transport typically takes 1 hour.

  • Looking for a convenient hotel close to LHR? If you're boarding an early flight from London Heathrow Airport to San Diego International Airport, these stays will have you moments from your departure lounge:

Arriving at San Diego International Airport (SAN)

Getting from San Diego International Airport (SAN) to central San Diego

  • The address for SAN is Airport Drive.

  • San Diego International Airport is approximately 5 kilometres from the centre of San Diego. The drive time takes about 10 minutes.

  • Travelling to the centre on public transport will take you around 20 minutes.

When to fly to San Diego International Airport (SAN)

  • The quietest month for a flight from London Heathrow Airport to San Diego International Airport is May, while July is the busiest. Pick the best time to visit San Diego based on whether you prefer a more relaxed vibe or a faster pace.

  • The warmest month in San Diego is August, with temperatures ranging between 17ºC (63ºF) and 28ºC (82ºF). Lock in your flights from London Heathrow Airport to San Diego International Airport in this month if this is the kind of weather you like.

  • If you like cooler conditions, look for a cheap ticket from LHR to SAN in February. Temperatures average between 7ºC (45ºF) and 23ºC (73ºF) then.

Explore more of United States

  • San Diego is always a good idea, but there are so many other parts of United States you should also see. Around 177 kilometres north-west of San Diego, a trip to Los Angeles will keep your itinerary busy. Start with popular sights like Griffith Observatory, The Broad and La Brea Tar Pits & Museum.

  • Around 483 kilometres east of San Diego, Phoenix is another favourite stop in United States. Experience this destination's highlights firsthand at Desert Botanical Garden, Heard Museum and Papago Park.

Plan the rest of your trip from London to San Diego

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.