Cheap flights from London Heathrow Airport to San Diego from $429
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 Heathrow Airport to San Diego departing on 8/24. 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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SWISS flights from London Heathrow Airport to San Diego
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British Airways flights from London Heathrow Airport to San Diego
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How to get the cheapest flight ticket from London Heathrow Airport 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 January, then departing from London Heathrow Airport during the month February is also very affordable. Most momondo users find prices during this month for around $658.
What is the cheapest day to depart on your flight to San Diego?
The cheapest day to depart from London Heathrow Airport 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 $699. 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 Heathrow to San Diego flight route?
Fly from London Heathrow to San Diego for the best London Heathrow - 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 Heathrow Airport 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 Heathrow Airport for as low as $660 on momondo.
What cabin class options are available on London Heathrow to San Diego flights?
There are 3 cabin classes available to choose from on London Heathrow 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 Heathrow Airport to San Diego flights?
No. A direct flight is the cheapest option for a flight between London Heathrow Airport to San Diego.
How have London Heathrow Airport to San Diego flight prices changed over time?
As of June 2025, prices for London Heathrow Airport to San Diego flights are approximately 20% more expensive when compared to flights at the same time last year.
What is the cheapest airline that flies from London Heathrow to San Diego?
Aer Lingus, British Airways, and Lufthansa are the most popular carriers operating from London Heathrow to San Diego
What airlines fly to San Diego?
British Airways, American Airlines and United Airlines are the top three most popular airlines that fly to San Diego from London Heathrow Airport according to our data. British Airways is the first choice among our users, with 54% of people opting to fly with this airline when traveling to San Diego. Keep in mind that there are 4 different airlines that fly to San Diego on a routine basis, so you have a few additional options to choose from.
How many flights depart from London Heathrow Airport to San Diego on average per day?
As of June 2025, 7 flights take off from London Heathrow Airport and land in San Diego each day. The most common flight departure time for this route is 2:00PM, with 61% of daily flights taking off in the afternoon.
How many flights depart from London Heathrow Airport to San Diego on average per week?
53 flights are operational weekly from London Heathrow Airport to San Diego as of June 2025. The most popular departure day for this route is Fri, with 19% of flights per week taking off on this day.
When to book flights from London Heathrow Airport to San Diego
Cheap London Heathrow Airport to San Diego (LHR to SAN) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to San Diego
How far is London Heathrow to San Diego by plane?
A flight from London Heathrow to San Diego will travel around 5468.7 mi. A reasonable flight in good conditions will take 11h 05m.
When did momondo last update prices for flights from London Heathrow Airport to San Diego Airport?
Prices for flights from London Heathrow Airport to San Diego Airport are updated daily.
How many operators does momondo search for flights from London Heathrow Airport to San Diego Airport?
As of June 2025, there are 4 operators available to choose from for flights from London Heathrow Airport to San Diego Airport.
How old do you have to be to fly from London Heathrow Airport to San Diego Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to San Diego Airport.
What documentation or ID do you need to fly to San Diego Airport?
The necessary travel and health documents for your San Diego Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London Heathrow Airport to San Diego?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from London Heathrow Airport to San Diego is Boeing 787-8 Dreamliner (50.13% of total bookings). The next most popular plane models are Boeing 777-300ER (24.83%), Boeing 777-300 (8.49%), and Airbus A350-1000 (6.84%).
What is the most popular airline from London Heathrow Airport to San Diego?
Based on momondo bookings for flights between London Heathrow Airport and San Diego, the leading airline is British Airways, making up 60% of the total bookings. Other popular airlines include American Airlines with 20%, Iberia with 13%, and United Airlines with 7%.
Best airlines flying from London Heathrow Airport to San Diego
Compare and see reviews for airlines that fly from London Heathrow Airport to San Diego with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $523 | Free Cancellation | Rating 7.4 8,852 reviews | |||
| PriceFrom $553 | Free Cancellation | Rating 6.6 7,081 reviews | |||
| PriceFrom $576 | Free Cancellation | Rating 7.0 2,811 reviews | |||
| PriceFrom $579 | Free Cancellation | Rating 7.2 10,000 reviews |
American Airlines Flights From London Heathrow Airport to San Diego
American Airlines is one of the most popular airlines flying from London Heathrow Airport to San Diego, operating 13 flights/week on average for this route. A good American Airlines flight deal for London Heathrow Airport to San Diego starts from $579 round-trip, up to an average price of $745. Our users have rated American Airlines at 7.2/10.
British Airways Flights From London Heathrow Airport to San Diego
Across 7,081 British Airways reviews on momondo, the average score is 6.6/10. British Airways flies from London Heathrow Airport to San Diego about 14 times each week, with ticket deals ranging from $553 to $729. Price data is based on momondo searches in the last 72 hours.
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?
momondo does allow users to show only those flights to San Diego from London which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from London to San Diego?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Diego from London.
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 not ready to book a flight from London to San Diego now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Diego and let you know when they change.