£421 Find Cheap Flights from London Heathrow Airport to San Diego – Compare and Save

These are the earliest and latest flight times available from London Heathrow Airport to San Diego:

• Earliest: departs at 12:45 and lands at 00:10
• Latest: departs at 12:45 and lands at 00:10.

The flight takes about 11h 25m.

Four cabin classes are available on flights from London Heathrow Airport to San Diego:

• Economy class
• Premium Economy Class
• Business Class
• First Class

Prices vary by airline.

A direct flight from London Heathrow Airport to San Diego takes 11h 25m, covering 5,469 miles.

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Return flights from London Heathrow Airport to San Diego range from £611 to £887, with an average of £717 over the past 12 months. Anything below £611 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 19% above the £717 route average. Book 18 weeks before departure for the lowest fares.

On this route, stopover flights are cheaper than direct options on average. Stopover fares average £431 return via Houston George Bush Intcntl (IAH), compared with £750 for direct.

British Airways is the only airline operating London Heathrow Airport to San Diego flights. 84% of its flights are on time.

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge £42–£75 for the first checked bag in Economy. Premium fares and elite status bookings typically include a free checked bag.

The Boeing 777 family is used most often on this route, operated mainly by British Airways and American Airlines. Other aircraft seen on the route include Boeing 777-300ER variants.

Afternoon is the busiest departure period on London Heathrow Airport to San Diego flights, with 100% leaving in that window. Morning departures account for 0%, Evening flights for 0%, and Night flights for 0%.

One-way fares from London Heathrow Airport to San Diego are currently lower than usual. Average one-way flight prices are about £435, which is 24% below the typical average for this route.

San Diego Airport (SAN) hosts 5 major car hire companies, with daily rates starting from around £11 for economy cars. Top options include:

• Dollar
• Payless
• Europcar
• Thrifty
• Fox

Flights from London Heathrow Airport to San Diego usually depart from London Heathrow (LHR) and arrive at San Diego (SAN).

Morning flights have the fewest delays on this route, while afternoon departures tend to have the most.

A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the London Heathrow Airport to San Diego route, 16% of flights were delayed in the past three months, with delays averaging 2h 22m.

One-stop flights from London Heathrow Airport to San Diego most commonly connect through:

• Denver Intl (DEN) – 27% of one-stop connections
• New York John F Kennedy Intl (JFK) – 27% of one-stop connections
• Seattle/Tacoma Intl (SEA) – 17% of one-stop connections
• Amsterdam Schiphol (AMS) – 5% of one-stop connections

Yes. Flexible dates can save you up to 18% on flights from London Heathrow Airport to San Diego. Tuesday is the cheapest departure day at £673 return on average, while Sunday is the most expensive at £813, a difference of £140.

KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

Only British Airways operates flights between London Heathrow Airport and San Diego.

Flying via Amsterdam Schiphol (AMS) gives the shortest average 1-stop total travel time of 13h 10m, compared to 13h 21m via Denver Intl (DEN) and 13h 43m via Phoenix Sky Harbor Intl (PHX).

San Diego is 7 hours behind London Heathrow Airport (Pacific Time vs British Time). Plan for the time shift when scheduling connections or first-day activities.

Some of the most popular sights in San Diego are San Diego Convention Center, La Jolla Cove, and Hyatt Regency Mission Bay Spa and Marina. These are among the most viewed places in San Diego on KAYAK.

Among airlines operating London Heathrow Airport to San Diego flights:

• British Airways: offers free seat selection
• American Airlines: offers free seat selection
• Iberia: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• British Airways: a cabin bag and a checked bag in Economy class
• American Airlines: a cabin bag and a checked bag in Economy class
• Iberia: a cabin bag and a checked bag in Economy class

Baggage allowance can vary by ticket type, cabin class, route, and airline, so always check the fare details before booking.