Skyscanner

Cheap flight tickets from London Heathrow to San Diego

Travellers and cabin class

Compare London Heathrow to San Diego flight deals

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

Book the best San Diego fare with no extra fees

Flight deals from London Heathrow to San Diego

Looking for a cheap last-minute deal or the best return flight from London Heathrow to San Diego? Find the lowest prices on one-way and return tickets right here.
San Diego.RM2,159 per passenger.Departing Tue, 6 Jan, returning Tue, 13 Jan.Return flight with Brussels Airlines.Outbound indirect flight with Brussels Airlines, departs from London Heathrow on Tue, 6 Jan, arriving in San Diego International.Inbound indirect flight with Brussels Airlines, departs from San Diego International on Tue, 13 Jan, arriving in London Heathrow.Price includes taxes and charges.From RM2,159, select.
San Diego.RM2,360 per passenger.Departing Thu, 18 Sep, returning Sun, 28 Sep.Return flight with United.Outbound indirect flight with United, departs from London Heathrow on Thu, 18 Sep, arriving in San Diego International.Inbound indirect flight with United, departs from San Diego International on Sun, 28 Sep, arriving in London Heathrow.Price includes taxes and charges.From RM2,360, select.
San Diego.RM2,367 per passenger.Departing Sun, 16 Nov, returning Sat, 6 Dec.Return flight with Lufthansa and Austrian Airlines.Outbound indirect flight with Lufthansa, departs from London Heathrow on Sun, 16 Nov, arriving in San Diego International.Inbound indirect flight with Austrian Airlines, departs from San Diego International on Sat, 6 Dec, arriving in London Heathrow.Price includes taxes and charges.From RM2,367, select.
San Diego.RM2,367 per passenger.Departing Wed, 11 Feb, returning Fri, 27 Feb.Return flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from London Heathrow on Wed, 11 Feb, arriving in San Diego International.Inbound indirect flight with Lufthansa, departs from San Diego International on Fri, 27 Feb, arriving in London Heathrow.Price includes taxes and charges.From RM2,367, select.
San Diego.RM2,367 per passenger.Departing Wed, 12 Nov, returning Sun, 16 Nov.Return flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from London Heathrow on Wed, 12 Nov, arriving in San Diego International.Inbound indirect flight with Lufthansa, departs from San Diego International on Sun, 16 Nov, arriving in London Heathrow.Price includes taxes and charges.From RM2,367, select.
San Diego.RM2,367 per passenger.Departing Thu, 5 Mar, returning Sun, 8 Mar.Return flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from London Heathrow on Thu, 5 Mar, arriving in San Diego International.Inbound indirect flight with Lufthansa, departs from San Diego International on Sun, 8 Mar, arriving in London Heathrow.Price includes taxes and charges.From RM2,367, select.
San Diego.RM2,367 per passenger.Departing Mon, 22 Sep, returning Wed, 1 Oct.Return flight with Lufthansa and Austrian Airlines.Outbound indirect flight with Lufthansa, departs from London Heathrow on Mon, 22 Sep, arriving in San Diego International.Inbound indirect flight with Austrian Airlines, departs from San Diego International on Wed, 1 Oct, arriving in London Heathrow.Price includes taxes and charges.From RM2,367, select.
San Diego.RM2,375 per passenger.Departing Fri, 31 Oct, returning Mon, 3 Nov.Return flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from London Heathrow on Fri, 31 Oct, arriving in San Diego International.Inbound indirect flight with Lufthansa, departs from San Diego International on Mon, 3 Nov, arriving in London Heathrow.Price includes taxes and charges.From RM2,375, select.

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

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 flights are currently cheapest in January.
May
from RM7,493
Jun
from RM2,566
Jul
from RM2,919
Aug
from RM3,727
Sep
from RM2,360
Oct
from RM2,576
Nov
from RM2,367
Dec
from RM2,377
Jan
from RM2,159
Feb
from RM2,367
Mar
from RM2,367
Apr
from RM2,605

Direct flights from London Heathrow to San Diego

Alternative London Heathrow to San Diego routes

Looking for the cheapest, fastest or easiest route from London Heathrow to San Diego? You could fly into the following airports instead.

London to San Diego: Flight information

The things to know before you go.
Cheapest flight foundRM2,159
Cheapest month to flyJanuary
Average flight time11 hrs, 13 mins
Most popular airlineAlaska Airlines
Average flights per week62

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

There are 2 airports in San Diego: San Diego International and McClellan-Palomar.
The best price we found for a return flight from London Heathrow to San Diego is RM2,159. 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.
Alaska Airlines, American Airlines and British Airways fly direct from London Heathrow to San Diego.
As of May 2025, there are 61 flights per week flying from London Heathrow to San Diego.
The cheapest month to fly from London Heathrow to San Diego is usually May 2025.
If you're flying from London Heathrow Airport, the cheapest airport near San Diego is San Diego International – which is 4.1 km away from the centre of San Diego. We've found flights into this airport from RM2,159.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from London Heathrow Airport to San Diego on Tuesday, 6 January 2026.
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 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.
In May, the average temperature is usually around 17°C. August is typically the warmest month in San Diego, when it usually averages around 28°C. You can expect the least rain in June. The coldest month is December, with temperatures averaging 10°C. The rainiest month is February.
Currently, Brussels Airlines and Iberia offer the cheapest flight tickets to San Diego.

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

  • Expect to be travelling for 10 hours 35 minutes. That's the average journey time for a direct flight from London Heathrow Airport to San Diego.

  • London Heathrow Airport is located in London. Based in the UTC-7 timezone, San Diego is seven hours behind London.

  • The busiest route is from London Heathrow Airport (LHR) to San Diego International Airport (SAN). There are ten weekly services between these two airports. British Airways offers a 11:30 departure between LHR and SAN.

  • Leave enough time to get on your LHR to San Diego flight. It's generally best to arrive two hours before international departures and an hour ahead for domestic flights.

  • Planning to travel during a peak period like public or school holidays? Expect longer lines at check-in and security. To give yourself peace of mind, arrive up to four hours before international flights and two hours ahead of domestic departures.

  • You can book a direct London Heathrow Airport to San Diego ticket. Start your trip at LHR and end it at San Diego International Airport (SAN).

  • Check out the deals with British Airways. This airline operates direct flights from London Heathrow Airport to San Diego.

  • Stopovers are the ideal opportunity to break up your journey and maybe even explore a different city. When browsing for flight tickets from LHR to San Diego, deselect the 'Direct flights only' box to see where you can visit along the way. Popular options include:

    • Denver International Airport (DEN)

    • Phoenix Sky Harbour International Airport (PHX)

    • Harry Reid Airport (formerly McCarran Airport) (LAS)

  • Located around 26 kilometres from central London, LHR can be reached in about 55 minutes by car, depending on traffic. Travelling on public transport will take roughly 1 hour.

  • Searching for a hotel near LHR? If you're boarding an early flight from London Heathrow Airport to San Diego, these stays will put you moments from your departure gate:

  • Of the departures from London Heathrow Airport, 68.18% land on time at their destination.

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

  • RM1,638 is currently the best price for a one-way London Heathrow Airport to San Diego flight. Return flight tickets start at RM2,159. These prices can change based on demand.

  • Book one month before you travel. Research on pricing trends suggests this is the ideal window for finding cheap flights from LHR to San Diego.

  • Plan your trip for May. That's the best month for scoring an epic deal on London Heathrow Airport to San Diego tickets. If you have flexibility with your dates, use the 'Whole month' tool to find the cheapest price across each month.

  • Stay on top of deals for cheap flights from LHR to San Diego by creating a Price Alert. You'll get an email or notification on the app when a new discounted fare appears.

  • Save on your flight from London Heathrow Airport to San Diego with the help of our filters. Select your ideal duration, departure time and airlines, then sort the results by 'Cheapest' to see the best deals.

Airports in San Diego

San Diego International Airport (SAN)

  • San Diego International Airport (SAN) is around 5 kilometres from the centre of San Diego. If you're getting a cab or a ride-share, the drive takes about 10 minutes.

  • Getting to the centre on public transport takes about 20 minutes.

  • If you're coming in on a late flight from London Heathrow Airport to San Diego, nothing beats the convenience of staying near the terminal. Pick up your bags from the carousel and then be showered and snoozing soon after at one of these accommodation options near SAN:

  • Say yes to new adventures by picking up a San Diego International Airport rental car. Grab a set of wheels from Thrifty, Dollar or Budget and explore beyond San Diego's usual tourist stops.

  • To lock in the lowest price, book your vehicle from San Diego International Airport around two weeks in advance of your flight from LHR to San Diego.

  • You'll find SAN at N Harbour Dr.

McClellan-Palomar Airport (CLD)

  • After your flight from London Heathrow Airport to San Diego has arrived, you can get to the city centre in around 40 minutes by car. Central San Diego is roughly 56 kilometres from McClellan-Palomar Airport (CLD).

  • You can expect the journey to take roughly 2 hours 15 minutes on public transport.

  • Hang the 'Do not disturb' sign on your door and unwind at a hotel close to CLD. Here are a few options where you can put your feet up after your LHR to San Diego flight:

  • The quickest way to get to where you're going is with a McClellan-Palomar Airport rental car. Collect your wheels from Budget, Hertz or Avis and make a speedy getaway.

  • Get the vehicle you actually want, not just what's available, by securing your ride from CLD before your arrival. You can also avoid paying more than you need to, especially during busy airport times.

Best time to go to San Diego

  • Carefully consider your trip dates before booking your flight from London Heathrow Airport to San Diego. The city buzzes in peak season, but rates are typically higher and top attractions can be crowded. Go to San Diego in the off-season if you want a quieter vibe.

  • The warmest month in San Diego is August, with temperatures ranging between 17ºC (63ºF) and 28ºC (82ºF). Lock in your London Heathrow Airport to San Diego flight ticket then if that's your ideal forecast.

  • If you want cooler conditions, search for a cheap ticket from LHR to San Diego in February when temperatures average between 7ºC (45ºF) and 23ºC (73ºF).

More about San Diego

  • Start your San Diego trip right by choosing the ideal place to stay. As soon as you've booked your flight from London Heathrow Airport to San Diego, explore our range of accommodation options including:

  • USS Midway Museum and San Diego Zoo are just a couple of the leading attractions to add to your San Diego to-do list. Continue your sightseeing adventures at SeaWorld San Diego.

Explore more of United States

  • San Diego has loads to offer, but there are so many other corners of United States just waiting to be discovered. About 177 kilometres north-west of San Diego, a visit to Los Angeles will keep you on the move. Don't miss top attractions like Griffith Observatory, The Broad and La Brea Tar Pits & Museum.

  • If there's time to check out another major stop in United States, consider Phoenix, roughly 483 kilometres east of San Diego. Desert Botanical Garden, Heard Museum and Papago Park are the start of reasons to visit.

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.