Cheap Flights from London Heathrow to San Diego

Compare London Heathrow to San Diego flight deals

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

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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.R 7,003 per passenger.Departing Wed, 28 May.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from London Heathrow on Wed, 28 May, arriving in San Diego International.Price includes taxes and charges.From R 7,003, select.

San Diego.R 7,016 per passenger.Departing Sat, 7 Jun.One-way flight with Vueling Airlines.Outbound indirect flight with Vueling Airlines, departs from London Heathrow on Sat, 7 Jun, arriving in San Diego International.Price includes taxes and charges.From R 7,016, select.

San Diego.R 7,111 per passenger.Departing Thu, 21 Aug.One-way flight with Scandinavian Airlines.Outbound indirect flight with Scandinavian Airlines, departs from London Heathrow on Thu, 21 Aug, arriving in San Diego International.Price includes taxes and charges.From R 7,111, select.

San Diego.R 7,913 per passenger.Departing Sat, 26 Apr.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from London Heathrow on Sat, 26 Apr, arriving in San Diego International.Price includes taxes and charges.From R 7,913, select.

San Diego.R 8,509 per passenger.Departing Wed, 3 Dec.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from London Heathrow on Wed, 3 Dec, arriving in San Diego International.Price includes taxes and charges.From R 8,509, select.

San Diego.R 8,766 per passenger.Departing Mon, 17 Nov.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from London Heathrow on Mon, 17 Nov, arriving in San Diego International.Price includes taxes and charges.From R 8,766, select.

San Diego.R 8,850 per passenger.Departing Mon, 31 Mar.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from London Heathrow on Mon, 31 Mar, arriving in San Diego International.Price includes taxes and charges.From R 8,850, select.

San Diego.R 8,850 per passenger.Departing Tue, 1 Jul.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from London Heathrow on Tue, 1 Jul, arriving in San Diego International.Price includes taxes and charges.From R 8,850, 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 May.

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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 found	R 7,016
Cheapest month to fly	May
Average flight time	11 hrs, 13 mins
Most popular airline	Alaska Airlines
Average flights per week	68

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

How many airports are there in San Diego?

There are 2 airports in San Diego: San Diego International and McClellan-Palomar.

How much are return flights from London Heathrow to San Diego?

The best price we found for a return flight from London Heathrow to San Diego is R 10,610. 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.

How long does it take to fly from London Heathrow to San Diego?

11 hours and 13 minutes is the average flight time from London Heathrow to San Diego.

Which airlines fly direct from London Heathrow to San Diego?

Alaska Airlines, American Airlines and British Airways fly direct from London Heathrow to San Diego.

How many flights are there a week from London Heathrow to San Diego?

As of March 2025, there are 68 flights per week flying from London Heathrow to San Diego.

When is the cheapest time to fly from London Heathrow to San Diego?

The cheapest month to fly from London Heathrow to San Diego is usually March 2025.

Which is the cheapest airport to fly into in San Diego?

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 R 10,610.

Which upcoming date is cheapest to fly from London Heathrow Airport to San Diego on?

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, 13 May 2025.

Can I get a direct flight from London Heathrow Airport to San Diego?

Yes – the average flight time is 11 hours and 13 minutes.

How can I get the best flight deal from London Heathrow Airport to San Diego?

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.

When is the best time to book flights to San Diego?

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.

What’s the weather like in San Diego?

In March, the average temperature is usually around 14°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.

Which is the cheapest airline to fly from London Heathrow Airport to San Diego with?

Currently, Air Canada and Iberia offer the cheapest flight tickets to San Diego.

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

Book a direct flight from London Heathrow Airport to San Diego and you'll be in the air for around 10 hours 24 minutes.
San Diego is 7 hours behind London, where London Heathrow Airport is located. San Diego operates on the UTC-7 timezone.
With 17 flights a week between the two airports, London Heathrow Airport (LHR) to San Diego International Airport (SAN) is the busiest route. British Airways operates the earliest flight at 12:15. If you'd like to get more out of your day before flying, the last departure from LHR to SAN is with British Airways at 15:30.
For a smooth journey, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This will give you plenty of time to board your flight from LHR to San Diego.
During popular months like July, it's wise to get to the airport well in advance. Plan to arrive two hours before a domestic departure and four hours ahead of international flights whenever you're travelling during high season in general.
Direct flights from London Heathrow Airport (LHR) to San Diego are available for booking. San Diego International Airport (SAN) is where you'll be touching down.
British Airways is a well-known airline that offers direct flights from London Heathrow Airport to San Diego.
A stopover is the perfect opportunity to break up your journey — and maybe even explore a different city. When searching for flights from LHR to San Diego, deselect the 'Direct flights only' box to see where you can stop along the way. Here are some popular options to consider:
- Phoenix Sky Harbour International Airport (PHX)
- Denver International Airport (DEN)
- Harry Reid Airport (formerly McCarran Airport) Airport (LAS)
You'll need an ETA for United States if you have a passport from United Kingdom and are visiting for tourism purposes. Travel documentation and visa requirements can be subject to change. So before booking your cheap ticket from London Heathrow Airport to San Diego, check with your airline and your destination country's local consulate or embassy for the latest information.
LHR is around 31 kilometres from central London. If you're driving, catching a cab or ride-sharing from the centre, it'll take 57 minutes or so to get there, depending on traffic. If you're taking public transport, expect the journey time to be around 1 hour and 1 minute.
After a relaxed start to your break? Stay near LHR. Whether you're taking an early flight from London Heathrow Airport to San Diego or want to avoid feeling rushed, these hotels are the answer:

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

R 7,016 is the lowest price we've found for a one-way ticket from London Heathrow Airport to San Diego. For a return flight on this route, the best price is R 10,610. Depending on the availability when you book, these fares may change.
Get cheap tickets from LHR to San Diego by booking at least 9 months ahead. Based on our research, that's the sweet spot for landing a bargain.
May is the cheapest month for tickets from London Heathrow Airport to San Diego. If you want to travel at a different time of year, the 'Whole month' tool will show you the lowest prices across every month.
Snapping up a cheap ticket from LHR to San Diego is a piece of cake with Price Alerts. Simply create one of these automatic alerts and we'll notify you when the price has dropped.
Take advantage of the filters to find your ideal trip. To see the 'Cheapest,' 'Best' or 'Fastest' flights from London Heathrow Airport to San Diego, use the 'Sort by' tool. You can also filter results by airline, departure and arrival times, and number of stops.

Airports in San Diego

San Diego International Airport (SAN)

San Diego International Airport (SAN) is around 5 kilometres from central San Diego. With your own car rental or if you take a cab, the drive is around 9 minutes.
It'll take around 20 minutes to get there using public transport.
If you have a late flight from London Heathrow Airport to San Diego, few things beat the convenience of staying near the terminal. Pick up your bags from the carousel and then be showered and sleeping not long after at one of these accommodation options near SAN:

McClellan-Palomar Airport (CLD)

McClellan-Palomar Airport (CLD) is roughly 56 kilometres from central San Diego. Once you've disembarked your flight from London Heathrow Airport to San Diego, it'll take you around 39 minutes to get to the heart of the city in a cab or ride-share.
You can also travel using public transport, which will take around 2 hours and 14 minutes.
After your flight from LHR to San Diego, tuck yourself in at a hotel close to CLD. These are some comfortable accommodation options that'll help you sink into relaxation mode:

Best time to go to San Diego

It's time to work out your travel dates for your flight from London Heathrow Airport to San Diego. July is the busiest month for a trip to San Diego. If you want a more peaceful vibe, go in May.
Before locking in your flight from London Heathrow Airport to San Diego, think about the type of weather you enjoy. August is the warmest month in San Diego, with temperatures ranging from 17ºC to 28ºC.
Look for cheap flights from LHR to San Diego in February if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between 7ºC and 23ºC on average.

More about San Diego

Start your San Diego trip off on the right foot by choosing the perfect place to stay. As soon as you've booked your flight from London Heathrow Airport to San Diego, explore our range of hotels including:
All great holidays should include a little sightseeing. San Diego Zoo, USS Midway Museum and SeaWorld San Diego are essential stops on your San Diego itinerary.

Complete your San Diego trip with a car rental

We use the same magic that helped you find your cheap flight from London Heathrow Airport to San Diego to track down amazing deals on car rentals. Search for your ride in seconds and compare offers in one place. Plus you'll find all the info on car rentals in San Diego, from the most popular car type to the best time to book.