Cheap Flights from San Diego to London

Compare San Diego to London flight deals

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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.

London.$508 per passenger.Departing Tue, Sep 30, returning Wed, Oct 8.Round-trip flight with Air Canada and Lufthansa.Outbound indirect flight with Air Canada, departing from San Diego International on Tue, Sep 30, arriving in London Heathrow.Inbound indirect flight with Lufthansa, departing from London Heathrow on Wed, Oct 8, arriving in San Diego International.Price includes taxes and charges.From $508, select.

London.$533 per passenger.Departing Wed, Oct 29, returning Mon, Nov 17.Round-trip flight with Lufthansa and SWISS.Outbound indirect flight with Lufthansa, departing from San Diego International on Wed, Oct 29, arriving in London Heathrow.Inbound indirect flight with SWISS, departing from London Heathrow on Mon, Nov 17, arriving in San Diego International.Price includes taxes and charges.From $533, select.

London.$538 per passenger.Departing Wed, Oct 15, returning Thu, Oct 30.Round-trip flight with Air Canada and Lufthansa.Outbound indirect flight with Air Canada, departing from San Diego International on Wed, Oct 15, arriving in London Heathrow.Inbound indirect flight with Lufthansa, departing from London Heathrow on Thu, Oct 30, arriving in San Diego International.Price includes taxes and charges.From $538, select.

London.$546 per passenger.Departing Wed, Nov 12, returning Mon, Nov 17.Round-trip flight with SWISS.Outbound indirect flight with SWISS, departing from San Diego International on Wed, Nov 12, arriving in London Heathrow.Inbound indirect flight with SWISS, departing from London Heathrow on Mon, Nov 17, arriving in San Diego International.Price includes taxes and charges.From $546, select.

London.$547 per passenger.Departing Tue, Dec 9, returning Tue, Dec 16.Round-trip flight with Lufthansa.Outbound indirect flight with Lufthansa, departing from San Diego International on Tue, Dec 9, arriving in London Heathrow.Inbound indirect flight with Lufthansa, departing from London Heathrow on Tue, Dec 16, arriving in San Diego International.Price includes taxes and charges.From $547, select.

London.$549 per passenger.Departing Mon, Mar 23, returning Tue, Mar 31.Round-trip flight with Air Canada and Lufthansa.Outbound indirect flight with Air Canada, departing from San Diego International on Mon, Mar 23, arriving in London Heathrow.Inbound indirect flight with Lufthansa, departing from London Heathrow on Tue, Mar 31, arriving in San Diego International.Price includes taxes and charges.From $549, select.

London.$556 per passenger.Departing Tue, Dec 2, returning Fri, Dec 12.Round-trip flight with American Airlines.Outbound direct flight with American Airlines departing from San Diego International on Tue, Dec 2, arriving in London Heathrow.Inbound direct flight with American Airlines departing from London Heathrow on Fri, Dec 12, arriving in San Diego International.Price includes taxes and charges.From $556, select.

London.$556 per passenger.Departing Mon, Oct 6, returning Wed, Oct 22.Round-trip flight with American Airlines.Outbound direct flight with American Airlines departing from San Diego International on Mon, Oct 6, arriving in London Heathrow.Inbound direct flight with American Airlines departing from London Heathrow on Wed, Oct 22, arriving in San Diego International.Price includes taxes and charges.From $556, select.

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 October.

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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	$505
Cheapest month to fly	September
Average flight time	10 hrs, 37 mins
Most popular airline	Alaska Airlines
Average flights per week	42

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

How many airports are there in London?

There are 6 airports in London: London City, London Heathrow, London Gatwick, London Luton, London Stansted, and London Southend.

How much are round-trip flights from San Diego to London?

The best price we found for a round-trip flight from San Diego to London is $508. 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 San Diego to London?

10 hours and 37 minutes is the average flight time from San Diego to London.

Which airlines fly direct from San Diego to London?

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

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

There are 42 flights per week flying from San Diego to London, as of September 2025.

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

The cheapest month to fly from San Diego to London is usually September.

What's the cheapest airport to fly to in London?

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 $508.

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

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from San Diego to London on Tuesday, September 30, 2025.

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

Yes – the average flight time is 10 hours and 37 minutes.

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

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.

When is the best time to book flights to London?

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.

What’s the weather like in London?

In September, the average temperature is usually around 15°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.

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

The cheapest airline that flies to London is Air Canada, and the cheapest airline that flies to London Heathrow Airport is British Airways.

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

Planning your vacation starts with figuring out where you'll leave from in San Diego. San Diego International Airport (SAN) is the city's main airport, so explore your options for booking a flight from San Diego to London jetting off from here.
London has a number of airports you can jet into. Make your landing at London Heathrow Airport (LHR), London Gatwick Airport (LGW) or Stansted Airport (STN). Alternatively, touch down at London Luton Airport (LTN) or London City Airport (LCY).
The average time for a direct San Diego to London flight is 10 hours 35 minutes.
London is seven hours ahead of San Diego and is in the UTC+0 timezone.
San Diego International Airport (SAN) to London Heathrow Airport (LHR) is the most traveled route between these two cities. There are ten flights a week to pick from. If you prefer a later start to the day, the last flight from San Diego to London is with British Airways at 20:40. Choose the first SAN to LHR departure operated by British Airways at 17:15 to fit in more activities on your first day in London.
To ensure you board your San Diego to London flight, allow plenty of time to check in and drop off your luggage. Turning up two hours ahead of international departures and one hour before domestic flights is the general rule to follow.
Popular months like July or high seasons such as spring break and Thanksgiving will mean longer queues at security and check-in. If you're traveling then, play it safe and head to the airport even earlier. Arriving two hours before a domestic flight and four hours ahead of international departures is a smart move.

How to find the cheapest flights from San Diego to London

Currently, $190 is the lowest price we've seen for a one-way ticket from San Diego to London. The cheapest price for a return flight is $508. Remember fares can change due to demand at the time of booking.
Score cheap San Diego to London flights by booking two months ahead. Based on our research, that's the ideal time for finding the biggest deals.
May is the best month for picking up an amazing deal on a plane ticket from San Diego to London. If you're looking to travel at a different time of year, the 'Whole month' tool will show you the lowest prices for every month.
Save time searching for cheap flights from San Diego to London by creating a Price Alert. We'll send you an email or notification through the app when a lower fare becomes available.
Tailor your flights using filters. Pick your departure and arrival times, total journey duration and airlines. You can also sort the results by 'Fastest,' 'Best' or 'Cheapest' San Diego to London flights.

Flying from San Diego

San Diego International Airport (SAN)

You can get 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).
British Airways is a well-known carrier that offers direct San Diego to London plane tickets from SAN.
A stopover is the perfect opportunity to break up your trip — and possibly even visit a new city. When browsing San Diego to London flights departing from San Diego International Airport, uncheck the 'Direct flights only' box to see where you can visit along the way. Here are some options to consider:
- Harry Reid Airport (formerly McCarran Airport) (LAS)
- Denver International Airport (DEN)
- Los Angeles International Airport (LAX)
Located around 3 kilometers from central San Diego, SAN can be reached in about 10 minutes by car (depending on traffic). The journey by public transport will take roughly 20 minutes.
Want an easy start to your vacation? Stay near San Diego International Airport. Whether you're taking an early flight from San Diego to London or want to avoid feeling rushed, these hotels have you covered:
Of the flights that depart from San Diego International Airport, 71.38% land on time at their destination.
You'll find SAN at N Harbor Dr.

Arriving in London

London Heathrow Airport (LHR)

The distance from London Heathrow Airport (LHR) to central London is approximately 26 kilometers. It takes around 55 minutes to get to the center driving.
Getting to the center by public transport will take you roughly 1 hour.
Reserve a hotel close to LHR if you're coming in on a late flight from San Diego to London. Select one of these accommodation options and avoid the hassle of a long transfer:
Pick up a London Heathrow Airport rental car and discover London and beyond with your own wheels. Surprice, U-Save and Green Motion are well-known companies you can book with here.
To get the best deal, reserve your vehicle from London Heathrow Airport about one week ahead of your San Diego to London flight.

London Gatwick Airport (LGW)

London Gatwick Airport (LGW) is around 40 kilometers from central London. After your flight from San Diego to London, it takes approximately 1 hour 20 minutes to reach the heart of the city in a cab or ride-share.
Public transport will get you there in about 30 minutes.
There are some great places to lay your head close to LGW. Kick back after your San Diego to London flight at any of these perfectly located options:
Green Motion, U-Save and Drivalia make collecting a London Gatwick Airport rental car quick and easy. These companies are located in or around the terminal and will have you behind the wheel before you know it.
Score the best price by reserving your ride from LGW three weeks in advance. You'll also have access to a greater selection of vehicles.

Stansted Airport (STN)

Stansted Airport (STN) is roughly 48 kilometers from central London. It takes about 1 hour to reach the city center in a ride-share or cab once you've hopped off your flight from San Diego to London.
The journey will take roughly 1 hour 25 minutes by public transport.
If you don't want to make the trip to the center, find a hotel near STN. Get settled at one of these stays after your San Diego to London flight:
Start your journey without stressing about how to get to your next stop with a Stansted Airport rental car. Find your perfect set of wheels with reliable suppliers here like Green Motion, Drivalia and Europcar.
If you're after a specific type of vehicle, book your ride from STN about four weeks ahead of your flight from San Diego to London. This gives you a higher chance of getting your preferred car, on top of a better deal.

Best time to go to London

It's time to work out your trip dates for your flight from San Diego to London. July is the busiest month to visit London. If you want a more relaxed vibe, go in February.
The warmest month in London is July, with temperatures ranging between 11ºC (52ºF) and 26ºC (79ºF). Book your San Diego to London ticket then if that's your ideal forecast.
Look for cheap flights from San Diego to London in January if you'd rather travel when it's cooler. Temperatures are at their lowest then, ranging between 0ºC (32ºF) and 9ºC (48ºF) on average.

More about London

When it comes to searching for somewhere to lay your head, you'll find the best places to stay in London right here. Check out these options once you've locked in your flight from San Diego to London:
Big Ben and The British Museum are just the start of the popular attractions to add to your London must-do list. Keep the momentum going by heading to Buckingham Palace.

Explore more of United Kingdom

Birmingham is just one of the many places in United Kingdom waiting to be explored once you've seen London. Around 161 kilometers to the north-west, its top attractions include Cadbury World, The Library of Birmingham and National Sea Life Centre.
Bristol is another essential stop in United Kingdom and is around 177 kilometers west of London. No trip is complete without experiencing Clifton Suspension Bridge, Cabot Tower and Brandon Hill Nature Park.