Cheap Flights from London Heathrow to San Diego

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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 Airport to San Diego? If you want to travel next month, return fares start from R 14,337. Find the lowest prices on one-way and return tickets right here.

San Diego.R 7,521 per passenger.Departing Sat, 19 Sep.One-way flight with Vueling Airlines.Outbound indirect flight with Vueling Airlines, departs from London Heathrow on Sat, 19 Sep, arriving in San Diego International.Price includes taxes and charges.From R 7,521, select.

San Diego.R 7,680 per passenger.Departing Tue, 25 Aug.One-way flight with Aer Lingus.Outbound indirect flight with Aer Lingus, departs from London Heathrow on Tue, 25 Aug, arriving in San Diego International.Price includes taxes and charges.From R 7,680, select.

San Diego.R 8,377 per passenger.Departing Tue, 3 Nov.One-way flight with Vueling Airlines.Outbound indirect flight with Vueling Airlines, departs from London Heathrow on Tue, 3 Nov, arriving in San Diego International.Price includes taxes and charges.From R 8,377, select.

San Diego.R 8,408 per passenger.Departing Tue, 13 Oct.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Heathrow on Tue, 13 Oct, arriving in San Diego International.Price includes taxes and charges.From R 8,408, select.

San Diego.R 8,733 per passenger.Departing Wed, 3 Mar.One-way flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from London Heathrow on Wed, 3 Mar, arriving in San Diego International.Price includes taxes and charges.From R 8,733, select.

San Diego.R 8,733 per passenger.Departing Mon, 1 Feb.One-way flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from London Heathrow on Mon, 1 Feb, arriving in San Diego International.Price includes taxes and charges.From R 8,733, select.

San Diego.R 8,738 per passenger.Departing Tue, 12 Jan.One-way flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from London Heathrow on Tue, 12 Jan, arriving in San Diego International.Price includes taxes and charges.From R 8,738, select.

San Diego.R 8,746 per passenger.Departing Tue, 8 Dec.One-way flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from London Heathrow on Tue, 8 Dec, arriving in San Diego International.Price includes taxes and charges.From R 8,746, select.

San Diego.R 8,841 per passenger.Departing Tue, 20 Apr.One-way flight with United.Outbound indirect flight with United, departs from London Heathrow on Tue, 20 Apr, arriving in San Diego International.Price includes taxes and charges.From R 8,841, select.

San Diego.R 8,983 per passenger.Departing Tue, 11 May.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departs from London Heathrow on Tue, 11 May, arriving in San Diego International.Price includes taxes and charges.From R 8,983, select.

San Diego.R 9,165 per passenger.Departing Tue, 10 Nov.One-way flight with British Airways.Outbound direct flight with British Airways departs from London Heathrow on Tue, 10 Nov, arriving in San Diego International.Price includes taxes and charges.From R 9,165, select.

San Diego.R 9,185 per passenger.Departing Wed, 9 Dec.One-way flight with British Airways.Outbound direct flight with British Airways departs from London Heathrow on Wed, 9 Dec, arriving in San Diego International.Price includes taxes and charges.From R 9,185, select.

San Diego.R 9,194 per passenger.Departing Wed, 9 Sep.One-way flight with British Airways.Outbound direct flight with British Airways departs from London Heathrow on Wed, 9 Sep, arriving in San Diego International.Price includes taxes and charges.From R 9,194, select.

San Diego.R 9,201 per passenger.Departing Wed, 28 Oct.One-way flight with British Airways.Outbound direct flight with British Airways departs from London Heathrow on Wed, 28 Oct, arriving in San Diego International.Price includes taxes and charges.From R 9,201, select.

San Diego.R 9,317 per passenger.Departing Tue, 12 Jan.One-way flight with British Airways.Outbound direct flight with British Airways departs from London Heathrow on Tue, 12 Jan, arriving in San Diego International.Price includes taxes and charges.From R 9,317, select.

San Diego.R 9,335 per passenger.Departing Tue, 2 Feb.One-way flight with British Airways.Outbound direct flight with British Airways departs from London Heathrow on Tue, 2 Feb, arriving in San Diego International.Price includes taxes and charges.From R 9,335, 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 September.

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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.

San Diego International

4km from central San Diego

ClosestCheapest

from R 7,521

Search flights

McClellan-Palomar

48km from central San Diego

from R 11,572

Search flights

London to San Diego: Flight information

The things to know before you go.

Cheapest flight found	R 7,521
Cheapest month to fly	September
Average flight time	11 hrs, 23 mins
Most popular airline	Alaska Airlines
Average flights per week	57

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 11,729. 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 23 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 July 2026, there are 57 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 September.

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 11,729.

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 Saturday, 5 September 2026.

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

Yes – the average flight time is 11 hours and 23 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 July, the average temperature is usually around 22°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, Scandinavian Airlines and British Airways 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 an average of 10 hours 40 minutes.
London Heathrow Airport is located in London. Following the UTC-8 timezone, San Diego is eight hours behind London.
The most popular route is from London Heathrow Airport (LHR) to San Diego International Airport (SAN). Take your pick of 11 services every week between these two airports. If you'd like to head off as soon as possible, the earliest flight from LHR to SAN is the 11:30 British Airways service. If you prefer to leave later in the day, the final departure is at 14:55 with British Airways.
Give yourself plenty of time to catch your LHR to San Diego flight. As a rule of thumb, arrive at least two hours before international departures and an hour ahead for domestic flights.
During popular months such as July, it's a good idea to get to the airport even earlier. Arrive two hours before domestic departures and four hours ahead of an international flight when you fly during high season in general.
Start your journey at LHR and travel nonstop to San Diego International Airport (SAN). That's where you can expect to land when searching for London Heathrow Airport to San Diego tickets.
Look out for promotions from British Airways. This airline has direct flights from London Heathrow Airport to San Diego.
Stopovers are the perfect opportunity to break up your trip and maybe even tick off a new city. When searching for plane tickets from LHR to San Diego, deselect the 'Direct flights only' box to see where you can visit along the way. Top options include:
- Denver International Airport (DEN)
- Phoenix Sky Harbour International Airport (PHX)
- Las Vegas Harry Reid International Airport (LAS)
The journey from central London to LHR takes about 25 minutes on public transport. If you ride-share, drive or get a taxi, you'll cover the 26 kilometres in 45 minutes or so, depending on traffic conditions.
Want a hassle-free start to your travels? Stay near LHR. Whether you're taking an early flight from London Heathrow Airport to San Diego or just don't like being rushed, these hotels are just the thing:
Of the flights that depart from London Heathrow Airport, 78% touch down on time at their destination.

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

The best price we've found for a one-way London Heathrow Airport to San Diego flight is R 7,521. The cheapest price for a return flight is R 11,729. Keep in mind fares may change due to demand at the time of booking.
Don't leave things to the last minute. You're more likely to land cheap flights from LHR to San Diego if you book early. Airlines often offer some great early bird deals.
The 'Whole month' search tool will show you the cheapest tickets from London Heathrow Airport to San Diego throughout the entire month. It's a good way to find a bargain if your travel plans are flexible.
Save time looking 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.
Find an affordable flight from London Heathrow Airport to San Diego with the help of our filters. Select your ideal departure time, duration and airlines, then sort the results by 'Cheapest' to see the best deals.

Airports in San Diego

San Diego International Airport (SAN)

The distance from San Diego International Airport (SAN) to central San Diego is roughly 5 kilometres. It'll take you about 15 minutes to get to the centre driving.
If you're using public transport, expect a journey time of around 25 minutes.
If you have a late flight from London Heathrow Airport to San Diego, few things beat the convenience of staying close to the terminal. Collect your bags from the carousel and then be showered and resting not long after at one of these accommodation options near SAN:
To get the best deal, reserve your ride 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)

McClellan-Palomar Airport (CLD) is about 48 kilometres from central San Diego. Explore your options for heading into town after your flight from London Heathrow Airport to San Diego has landed.
You'll find some great places ready to welcome you near CLD. Settle in and get cosy after your LHR to San Diego flight at one of these well-located options:
In general, the sooner you book, the more you save and the better your options. Secure your ride from CLD as soon as you know your dates.

Best time to go to San Diego

It's time to pick your trip dates for your flight from London Heathrow Airport to San Diego. July is the busiest month to travel to San Diego. If you want a more relaxed vibe, go in December.
Book a London Heathrow Airport to San Diego plane ticket with a departure in August if you want to experience the city during its warmest month. Expect temperatures to range from 16ºC (61ºF) to 27ºC (81ºF).
Search for cheap tickets from LHR to San Diego in February if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between 8ºC (46ºF) and 22ºC (72ºF) on average.

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, check out our selection of hotels including:
San Diego Balboa Park and San Diego Zoo are just a couple of the major attractions to add to your San Diego to-do list. Keep the adventure rolling by checking out USS Midway Museum.

Explore more of the United States

Los Angeles is just one of the many cities in the United States waiting to be explored once you've seen San Diego. Around 177 kilometres away to the northwest, its best attractions include Hollywood Sign, Universal Studios Hollywood and Hollywood Bowl.
Around 483 kilometres east of San Diego, Phoenix is another favourite stop in the United States. No visit is complete without checking out Camelback Mountain, Yayoi Kusama Fireflies Infinity Mirror Room and Heard Museum.