Cheap flights from London to San Diego from $297
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to San Diego departing on 9/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from London to San Diego
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to San Diego?
If you are unable to visit San Diego during the month of March, then departing from London during the month February is also very affordable. Most momondo users find prices during this month for around $652.
What is the cheapest day to depart on your flight to San Diego?
The cheapest day to depart from London to San Diego is on a Wednesday. Travelers who choose to depart for San Diego on a Wednesday will often find tickets for as low as $703. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $844. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.
What is the cheapest time of day to depart on your flight to San Diego?
The cheapest time of day to fly to San Diego is in the afternoon when flights can be purchased for as low as $727. Flights at noon are often more expensive with an average ticket price of $803.
What is the cheapest London to San Diego flight route?
Fly from London Heathrow to San Diego for the best London - San Diego flight prices
How far in advance should I book a flight to San Diego?
You are more likely to see cheaper flights to San Diego from London when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $764 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from London for as low as $660 on momondo.
What cabin class options are available on London to San Diego flights?
There are 3 cabin classes available to choose from on London to San Diego flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on London to San Diego flights?
You could potentially save up to 5% on your flight if you consider stops on a London to San Diego flight.
How have London to San Diego flight prices changed over time?
As of July 2025, prices for London to San Diego flights are approximately 0% more expensive when compared to flights at the same time last year.
How many flights depart from London to San Diego on average per day?
The number of flights available between London and San Diego is 7 per day as of July 2025. The most frequent departure time is 2:00PM, with 61% of daily flights leaving in the afternoon.
How many flights depart from London to San Diego on average per week?
As of July 2025, 55 flights take off from London and land in San Diego each week. The most common flight departure day for this route is Mon, with 16% of weekly flights taking off on this day.
When to book flights from London to San Diego
Cheap London to San Diego (LON to SAN) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London to San Diego
How far is London to San Diego by plane?
London and San Diego are 5478.3 mi apart from one another. Flights usually cover this in 11h 05m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from London to San Diego Airport?
Prices for flights from London to San Diego Airport are refreshed on a daily basis.
How many operators does momondo search for flights from London to San Diego Airport?
There are 4 operators available for flights from London to San Diego Airport as of July 2025.
How old do you have to be to fly from London to San Diego Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to San Diego Airport.
What documentation or ID do you need to fly to San Diego Airport?
The travel and health documents you'll need for your trip to San Diego Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Diego Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London to San Diego?
momondo data reveals that the most frequently booked plane model on the route from London to San Diego is Boeing 787-8 Dreamliner, representing 48.91% of all bookings. The subsequent popular models are Boeing 777-300ER at 25.52%, Boeing 777-300 at 9.21%, and Boeing 777 at 7.86%.
What is the most popular airline from London to San Diego?
Based on momondo bookings for flights between London and San Diego, the leading airline is British Airways, making up 48% of the total bookings. Other popular airlines include American Airlines with 23%, Iberia with 13%, and Delta with 8%.
Best airlines flying from London to San Diego
Compare and see reviews for airlines that fly from London to San Diego with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $533 | Free Cancellation | Rating 7.4 8,844 reviews | |||
| PriceFrom $569 | Free Cancellation | Rating 6.6 7,096 reviews | |||
| PriceFrom $579 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $599 | Free Cancellation | Rating 7.0 2,820 reviews |
American Airlines Flights From London to San Diego
American Airlines operates around 12 flights from London to San Diego every week. The average price of these flights found in the last 72 hours has been $780, but momondo users have found American Airlines deals from London to San Diego from as low as $579 round-trip. American Airlines has been scored 7.2/10 in 10,000 reviews.
Iberia Flights From London to San Diego
Another popular option for London to San Diego flights is Iberia (7.0/10, 2,818 ratings). Iberia flies from London to San Diego around 6 times per week, with deals starting from $599 round-trip and rising to an average price of around $780.
Traveling to a place near San Diego?
Book flights to San Diego if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from London to San Diego?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Diego from London.
Can I find flights from London to San Diego with flexible booking policies on momondo?
Flights from London to San Diego with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from London to San Diego?
Once all potential London to San Diego flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from London to San Diego right now. Can momondo alert me if prices change?
If you are simply researching potential flights to San Diego, momondo offers a useful price alert feature which will track prices for flights to San Diego from London and alert you when they change.