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| CHEAPEST MONTH TO FLY TO SAN DIEGO FROM LONDON HEATHROW AIRPORT | January | 18% cheaper | Flying from London Heathrow Airport to San Diego costs on average just £467 in January |
| MOST EXPENSIVE MONTH TO FLY TO SAN DIEGO FROM LONDON HEATHROW AIRPORT | July | 35% more expensive | It costs about £760 for flights to San Diego from London Heathrow Airport in July |
| MOST POPULAR MONTH TO FLY TO SAN DIEGO FROM LONDON HEATHROW AIRPORT | July | 273% more users visited | More momondo users searched in flights to San Diego from London Heathrow Airport in July than any other month |
Best One-Way Price | £213 |
|---|---|
Best Round-Trip Price | £356 |
Fastest flight time | 20h 50m |
Popular in | August |
If your plan is to spend time at Mission Beach while visiting San Diego, momondo recommends you plan your trip for August when the temperatures are typically higher and the chance of rain is low. For those looking to visit another beach nearby, La Jolla Cove is a great option in the San Diego area.
We recommend purchasing flights from United Kingdom to San Diego 79 days ahead of your departure date because this is when momondo users tend to see the best flight rates. On average, our users have found flights to San Diego for £569. Keep in mind that you might also find cheap flights to San Diego outside of this time window. In fact, momondo users recently found flights from United Kingdom to San Diego for £441.
Finding an alternative and possibly cheaper destination airport near San Diego is possible. If you are planning a flight to San Diego, consider booking flights to San Diego Carlsbad-Palomar Airport (29 mi from San Diego city centre), Santa Ana J. Wayne/Orange Cnty Airport (78 mi from San Diego city centre), Palm Springs Airport (86 mi from San Diego city centre), Long Beach Municipal Airport (95 mi from San Diego city centre) or Ontario Airport (96 mi from San Diego city centre).
The cheapest airport near San Diego is typically Palm Springs Airport, with an average price of £122/person. These prices vary based on where travellers are coming from. It is suggested that travellers looking to save money try momondo’s Airport-to-Airport Pricing Tool.
Prices for flights to San Diego Airport are refreshed on a daily basis.
As of July 2025, there are 17 operators available to choose from for flights to San Diego Airport.
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel 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.
We help find the flight that best suits your needs; momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight for you.
Flights 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.
Once all potential 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.
If you are not ready to book a flight to San Diego now, use our insights above to find helpful tips or alternatively set up a price alert; this is where momondo will track prices on flights to San Diego and let you know when they change.