Cheap Flights from London (LHR) to San Diego (SDM)

Popular airlines from Heathrow Airport (LHR) to San Diego, CA (SDM-Brown Field Municipal)

Alternative airports near San Diego

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to San Diego Intl. SAN. Cheapest and Closest option available. Average driving time to city center is 5 minutes. Flights from $748
SAN
San Diego Intl.
CheapestClosest
Average driving time to city center5 min
Flights from $748
Flights from London (LHR) to San Diego (SDM)
Origin airport
Heathrow
Destination airport
Brown Field Municipal
Distance
5475 mi

London to San Diego Flights

The cheapest times to fly from London to San Diego

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from London to San Diego are during the month of . You can find some of the cheapest flights from London to San Diego with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from London to San Diego

Sunday is one of the best days to book for cheap flights from London to San Diego: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from London to San Diego

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from London to San Diego in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap London to San Diego flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your London to San Diego airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Heathrow Airport (LHR) to San Diego, CA (SDM-Brown Field Municipal) cost?
Grab a cheap one-way flight or cheap return flight from Heathrow Airport (LHR) to San Diego, CA (SDM-Brown Field Municipal) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Heathrow Airport (LHR) to San Diego, CA (SDM-Brown Field Municipal)?
Flying in can help you save, as it's the cheapest month for flights between LHR and SDM. You'll typically find the lowest fares during off-peak months.
What is the cheapest airline that flies from Heathrow Airport (LHR) to San Diego, CA (SDM-Brown Field Municipal)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest LHR to SDM flight.
How many flights per day from Heathrow Airport (LHR) to San Diego, CA (SDM-Brown Field Municipal)?
You'll need to take a flight with a layover when traveling from Heathrow Airport (LHR) to San Diego, CA (SDM-Brown Field Municipal). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from LHR to SDM?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change based on a number of factors, including the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Heathrow Airport (LHR) to San Diego, CA (SDM-Brown Field Municipal)?
To touch down at San Diego, CA (SDM-Brown Field Municipal) without delays, opt for a flight that leaves from Heathrow Airport (LHR) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for San Diego County from Heathrow Airport (LHR)?
If you're boarding a direct flight from Heathrow Airport (LHR) to San Diego County, San Diego Intl. Airport (SAN) is the only airport you can touch down at.
Is it cheaper to buy a plane ticket from Heathrow Airport (LHR) to San Diego, CA (SDM-Brown Field Municipal) last-minute?
Booking your flight from LHR to SDM right before your journey is usually more expensive. However, if there's some wiggle room with your itinerary, you could score a cheap last-minute fare.
Is it cheaper to book a LHR to SDM flight and hotel package?
You'll typically save money by booking a LHR to SDM flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. Once you've selected your ideal accommodations and flights, consider adding extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Heathrow Airport (LHR) to San Diego, CA (SDM-Brown Field Municipal)?
In most instances, you can reschedule or cancel your LHR to SDM flight. However, additional fees may apply, especially if you booked over 24 hours ago. Double-check your itinerary for the airline's fees and rules on flight changes, or if you'd like more information, head to our Customer Service portal.

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*Available to One Key members.