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594 € Cheap Flights from London Stansted to San Diego

Compare London Stansted 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 Stansted to San Diego

Looking for a cheap last-minute deal or the best return flight from London Stansted to San Diego? Find the lowest prices on one-way and return tickets right here.
San Diego.594 € per passenger.Departing Fri, 16 Jan, returning Sun, 25 Jan.Return flight with Ryanair and Frontier Airlines.Outbound indirect flight with Ryanair, departs from London Stansted on Fri, 16 Jan, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Sun, 25 Jan, arriving in London Stansted.Price includes taxes and charges.From 594 €, select.
San Diego.622 € per passenger.Departing Tue, 10 Feb, returning Tue, 24 Feb.Return flight with Ryanair and Frontier Airlines.Outbound indirect flight with Ryanair, departs from London Stansted on Tue, 10 Feb, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Tue, 24 Feb, arriving in London Stansted.Price includes taxes and charges.From 622 €, select.
San Diego.628 € per passenger.Departing Fri, 23 Jan, returning Sun, 1 Feb.Return flight with Ryanair and Frontier Airlines.Outbound indirect flight with Ryanair, departs from London Stansted on Fri, 23 Jan, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Sun, 1 Feb, arriving in London Stansted.Price includes taxes and charges.From 628 €, select.
San Diego.644 € per passenger.Departing Fri, 27 Feb, returning Fri, 6 Mar.Return flight with Ryanair and Frontier Airlines.Outbound indirect flight with Ryanair, departs from London Stansted on Fri, 27 Feb, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Fri, 6 Mar, arriving in London Stansted.Price includes taxes and charges.From 644 €, select.
San Diego.654 € per passenger.Departing Tue, 31 Mar, returning Mon, 6 Apr.Return flight with Ryanair and Frontier Airlines.Outbound indirect flight with Ryanair, departs from London Stansted on Tue, 31 Mar, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Mon, 6 Apr, arriving in London Stansted.Price includes taxes and charges.From 654 €, select.
San Diego.661 € per passenger.Departing Sat, 14 Mar, returning Mon, 23 Mar.Return flight with Ryanair and Frontier Airlines.Outbound indirect flight with Ryanair, departs from London Stansted on Sat, 14 Mar, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Mon, 23 Mar, arriving in London Stansted.Price includes taxes and charges.From 661 €, select.
San Diego.699 € per passenger.Departing Wed, 13 May, returning Wed, 20 May.Return flight with Ryanair and Finnair.Outbound indirect flight with Ryanair, departs from London Stansted on Wed, 13 May, arriving in San Diego International.Inbound indirect flight with Finnair, departs from San Diego International on Wed, 20 May, arriving in London Stansted.Price includes taxes and charges.From 699 €, select.
San Diego.703 € per passenger.Departing Sat, 28 Feb, returning Sat, 4 Apr.Return flight with Ryanair and Frontier Airlines.Outbound indirect flight with Ryanair, departs from London Stansted on Sat, 28 Feb, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Sat, 4 Apr, arriving in London Stansted.Price includes taxes and charges.From 703 €, select.

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

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London Stansted to San Diego flights are currently cheapest in January.
Dec
Find prices
Jan
from 594 €
Feb
from 622 €
Mar
from 661 €
Apr
from 711 €
May
from 699 €
Jun
from 807 €
Jul
from 938 €
Aug
from 965 €
Sep
from 813 €
Oct
from 958 €
Nov
from 1.115 €

Alternative London Stansted to San Diego routes

Looking for the cheapest, fastest or easiest route from London Stansted 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 found594 €
Cheapest month to flyJanuary

Finding cheap flights from London Stansted 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 Stansted to San Diego is 594 €. 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.
Currently, there are no airlines that fly direct from London Stansted to San Diego. But we found flights with one or more stops from 594 €.
As of December 2025, there are no flights flying from London Stansted to San Diego.
The cheapest month to fly from London Stansted to San Diego is usually January.
If you're flying from London Stansted 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 594 €.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from London Stansted Airport to San Diego on Friday, 16 January 2026.
No airlines currently offer direct flights between London Stansted Airport and San Diego. Most routes have one or more stops.
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 December, the average temperature is usually around 13°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, Ryanair offers the cheapest flight tickets to San Diego.

Travelling from Stansted Airport (STN) to San Diego: what you need to know

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

  • Give yourself plenty of time to get on your STN to San Diego flight. As a rule of thumb, arrive at least two hours before international departures and an hour ahead for domestic flights.

  • If you're travelling during a bank holiday or another peak period, give yourself more time. A good general rule is two hours ahead of domestic flights and up to four hours before international departures. Check-in and security lines will be longer.

  • The journey from central London to STN takes about 1 hour 25 minutes on public transport. If you ride-share, drive or get a cab, you'll cover the 48 kilometres in 1 hour or so, depending on traffic.

  • Looking for a hotel near STN? If you've booked an early flight from Stansted Airport to San Diego, these accommodation options will put you moments from check-in:

  • 64.73% of flights departing from Stansted Airport touch down at their destination on time.

How to find the cheapest flights from Stansted Airport (STN) to San Diego

  • 318 € is the lowest price we've found for a one-way Stansted Airport to San Diego flight. A return ticket right now is 594 €. Depending on how early you book and the availability, these fares can change.

  • To find cheap flights from STN to San Diego, book early. Airlines tend to offer lower prices when flights first go on sale.

  • The 'Whole month' search tool will show you the cheapest tickets from Stansted Airport to San Diego throughout the month. It's a great way to snap up a bargain if your trip dates aren't set in stone.

  • Cut down on the time spent looking for cheap flights from STN to San Diego by setting up a Price Alert. You'll get an email or push notification on the app when a lower fare pops up.

  • Choose your preferred departure and arrival times, airlines and number of stops with our filters. Then, sort the results for your flight from Stansted Airport to San Diego by 'Fastest,' 'Best' or 'Cheapest.'

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 around 10 minutes to get to the centre driving.

  • Travelling on public transport takes around 20 minutes.

  • Consider staying in a hotel close to SAN if you have a late flight from Stansted Airport to San Diego. Settle into one of these options and skip the long transfer:

  • Grab a San Diego International Airport rental car and explore San Diego and beyond with your own wheels. Thrifty, Dollar and Budget are top providers you can book with here.

  • Secure the lowest price by booking your ride from San Diego International Airport around two weeks before your flight from STN to San Diego.

  • SAN is located at N Harbour Dr.

McClellan-Palomar Airport (CLD)

  • McClellan-Palomar Airport (CLD) is roughly 56 kilometres from the centre of San Diego. Once you've hopped off your flight from Stansted Airport to San Diego, it'll take you around 40 minutes to reach the heart of the city in a cab or ride-share.

  • If you're catching public transport, it'll take about 2 hours 15 minutes.

  • There are some great places to park your luggage (and yourself) near CLD. Unwind and get cosy after your STN to San Diego flight at any of these well-located options:

  • The fastest way to reach your destination is with a McClellan-Palomar Airport rental car. Collect your wheels from Budget, Hertz or Avis and set off in the blink of an eye.

  • Usually, the earlier you book, the better the deals and selection of vehicles. Lock in your ride from CLD as soon as you know your dates.

Best time to go to San Diego

  • Carefully consider your dates before booking your flight from Stansted Airport to San Diego. The city buzzes in peak season, but hotel prices are usually higher and attractions can get busy. Go to San Diego in the off-season if you want a quieter vibe.

  • When booking your Stansted Airport to San Diego plane ticket, think about what kind of weather works for you. August is the warmest month in San Diego, with temperatures ranging from 17ºC (63ºF) to 28ºC (82ºF).

  • February has average temperatures of between 7ºC (45ºF) and 23ºC (73ºF). Look for a cheap ticket from STN to San Diego around that time if you want to travel in cooler conditions.

More about San Diego

Explore more of United States

  • San Diego has its own special appeal, but there are so many other corners of United States just waiting to be explored. About 177 kilometres north-west of San Diego, a trip to Los Angeles will keep your itinerary busy. Check out popular attractions like Griffith Observatory, The Broad and La Brea Tar Pits & Museum.

  • Phoenix is another well-known destination in United States and is around 483 kilometres east of San Diego. No journey is complete without dropping by 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.