Cheap flights from San Diego to London

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      Compare San Diego to London flight deals

      Find the cheapest month or even day of the year to fly to London

      Book the best London fare with no extra fees

      Flight deals from San Diego to London

      Looking for a cheap last-minute deal or the best round-trip flight from San Diego to London? Find the lowest prices on one-way and round-trip tickets right here.

      Find the cheapest month to fly from San Diego to London

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like San Diego to London flights are currently cheapest in November.

      Direct flights from San Diego to London

      Alternative San Diego to London routes

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

      San Diego to London: Flight information

      The things to know before you go.
      Cheapest flight found$580
      Cheapest month to flyNovember
      Average flight time10 hrs, 32 mins
      Most popular airlineAlaska Airlines
      Average flights per week62

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

      There are 6 airports in London: London City, London Heathrow, London Gatwick, London Luton, London Stansted, and London Southend.
      The best price we found for a round-trip flight from San Diego to London is $580. 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.
      10 hours and 32 minutes is the average flight time from San Diego to London.
      Alaska Airlines, American Airlines and British Airways fly direct from San Diego to London.
      There are 62 flights per week flying from San Diego to London, as of April 2025.
      The cheapest month to fly from San Diego to London is usually April 2025.
      If you're flying from San Diego, the cheapest airport near London is London Heathrow – which is 22.9 km away from the center of London. We've found flights to this airport from $580.
      After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from San Diego to London on Tuesday, November 4, 2025.
      Yes – the average flight time is 10 hours and 32 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 London 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 London is around 40 days in advance, so don’t leave your flight to the last minute.
      In April, the average temperature is usually around 9°C. August is typically the warmest month in London, when it usually averages around 22°C. You can expect the least rain in March. The coldest month is January, with temperatures averaging 1°C. The rainiest month is October.
      The cheapest airline that flies to London is Iberia.

      Flying from San Diego to London: what you need to know

      • San Diego International Airport (SAN) is San Diego's main airport. Explore your options for reserving a flight from San Diego to London leaving from here.

      • Land at London Heathrow Airport (LHR), London Gatwick Airport (LGW) or Stansted Airport (STN). You can also disembark at London Luton Airport (LTN) and London City Airport (LCY) in London.

      • 10 hours 24 minutes is the average duration of a direct flight from San Diego to London. Following the UTC+0 timezone, London is 7 hours ahead of San Diego.

      • The most popular route for flights from San Diego to London is from San Diego International Airport (SAN) to London Heathrow Airport (LHR). You can select from 16 weekly services between these two airports. If you'd like to head off as soon as possible, the earliest flight from SAN to LHR is the 17:15 British Airways service. If you prefer traveling later, the final departure is at 20:40 with British Airways.

      • Give yourself plenty of time to make your flight from San Diego to London. As a rule of thumb, arrive two hours before international departures and an hour ahead for domestic flights.

      • You can expect longer lines during popular months like July and other peak seasons. Arriving up to four hours ahead of an international flight and two hours for domestic departures is a smart move.

      • You don't need a visa for United Kingdom if you hold a passport from United States and are traveling for tourism purposes. Travel documentation and visa requirements can change. So before locking in your cheap flights from San Diego to London, be sure to check with your airline and your destination country's local embassy or consulate for the most up-to-date information.

      Flying from San Diego

      San Diego International Airport (SAN)

      • You can reserve a direct flight from San Diego to London jetting off from San Diego International Airport (SAN). Start your trip at SAN and end it at London Heathrow Airport (LHR).

      • You can get away on a direct flight from San Diego to London with British Airways. This leading airline operates services from SAN.

      • Consider adding a stopover to potentially save on your flight from San Diego to London. Simply deselect 'Direct flights only' when searching for departures from San Diego International Airport. Break up the journey at one of these airports:

        • Los Angeles International Airport (LAX)

        • Denver International Airport (DEN)

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

      • Located around 5 kilometers from the center of San Diego, SAN can be reached in approximately 9 minutes by car (depending on traffic). The journey by public transport is roughly 20 minutes.

      • Searching for a handy hotel close to San Diego International Airport? If you're catching an early flight from San Diego to London, these stays will have you sleeping moments from your departure gate:

      Arriving in London

      London Heathrow Airport (LHR)

      • London Heathrow Airport (LHR) to central London takes around 57 minutes by car. It's approximately 31 kilometers away.

      • If you're traveling on public transport, expect a journey of roughly 1 hour and 1 minute.

      • Reserve a hotel near LHR if you're taking a late flight from San Diego to London. Check in to one of these options and skip the long transfer:

      London Gatwick Airport (LGW)

      • London Gatwick Airport (LGW) is around 80 kilometers from the center of London. Once you've hopped off your flight from San Diego to London, allow for a drive time of approximately 1 hour and 19 minutes to get to the heart of the city.

      • The journey will take approximately 1 hour and 26 minutes on public transport.

      • After your flight from San Diego to London, tuck yourself in at a hotel near LGW. These are some comfortable options that'll help you slip into relaxation mode:

      How to find the cheapest flights from San Diego to London

      • The lowest price we've seen for a one-way ticket from San Diego to London is $259. For a return flight on this route, the best price is $580. Depending on when and how early you book, these fares may change.

      • Book 9 months before you want to travel. After looking at the numbers on our calendar, this is how far you should book ahead to find cheap tickets from San Diego to London.

      • Organize your trip for May. That's the cheapest month for tickets from San Diego to London. If you're flexible with your travel dates, use the 'Whole month' tool to find the cheapest price across each month.

      • Sign into your online account or use the app to create a Price Alert. You'll be notified right away if there's a cheaper deal on this route. It's easy to do, and it'll save you time searching for cheap tickets from San Diego to London every day.

      • Tailor your trip using filters. Select your preferred arrival and departure times, total journey duration and airlines. You can also sort results by 'Cheapest,' 'Fastest' or 'Best' flights from San Diego to London.

      Best time to go to London

      • February is the quietest month for flights from San Diego to London, while July is the busiest. Work out the best time to go to London based on whether you like a lively atmosphere or a more laid-back vibe.

      • Book your flight from San Diego to London for July if you'd like to explore the city during its warmest month. You can expect temperatures in London to range from 11ºC to 26ºC.

      • For cooler conditions, search for a cheap ticket from San Diego to London in January when temperatures average between 0ºC and 9ºC.

      More about London

      • When it comes to searching for somewhere to lay your head, you'll find the most popular stays in London right here. Browse these hotels as soon as you've booked your flight from San Diego to London:

      • There are so many things to see and do in this city it can be hard to work out where to begin. Big Ben, The British Museum and Buckingham Palace are top attractions which should feature on any good London itinerary.

      Complete your London trip with a car rental

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

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