£252 Cheap flights to San Diego
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to San Diego departing on 29/8. 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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San Diego flights insights and trends
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What is the cheapest month to fly to San Diego?
If you don’t want to visit San Diego in March, then you should wait until February to fly from United Kingdom, when ticket prices are also cheap, with an average price of £474.
What is the absolute cheapest flight to San Diego?
In the past two weeks, users have booked deals to San Diego for £51/person, which is 69% cheaper than the average flight to San Diego. To find the cheapest price to San Diego from your area, use momondo’s Airport-to-Airport Pricing Tool.
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What is the cheapest day to depart on your flight to San Diego?
The cheapest day to depart from United Kingdom to San Diego is on a Friday when prices can be found for as low as £539. Flights from United Kingdom to San Diego on a Sunday will generally be more expensive and average around £600. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to San Diego?
In the morning is the cheapest time of day to fly from United Kingdom to San Diego when you can find flight prices for as low as £536. Flying to San Diego in the morning is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the afternoon because they tend to be around £600. Of course, these prices can vary depending on the time of year and what airport you fly to.
Cheapest flights to San Diego
Find the cheapest flights to San Diego from your nearest city or airport
| 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 £461 in January |
| MOST EXPENSIVE MONTH TO FLY TO SAN DIEGO FROM LONDON HEATHROW AIRPORT | July | 35% more expensive | It costs about £752 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 |
Cheap San Diego flight deals and tips
Summary info about San Diego flight prices, duration and airlines
Best One-Way Price | £252 |
|---|---|
Best Round-Trip Price | £429 |
Fastest flight time | 20h 42m |
Popular in | August |
Frequently asked questions about flying to San Diego
When is the best time to plan a beach trip to San Diego?
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.
How far in advance should I book a flight to San Diego?
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 £563. 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 £436.
Is there an alternative airport near San Diego?
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).
Is there a cheaper alternative to flying into San Diego?
The cheapest airport near San Diego is typically Palm Springs Airport, with an average price of £120/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.
When did momondo last update prices for flights to San Diego Airport?
Prices for flights to San Diego Airport are refreshed on a daily basis.
How many operators does momondo search for flights to San Diego Airport?
As of July 2025, there are 17 operators available to choose from for flights to San Diego Airport.
How old do you have to be to fly 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.
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.
Travelling 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 to San Diego?
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.
Can I find flights to San Diego with flexible booking policies on momondo?
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.
How can momondo help me find flights to San Diego?
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.
I’m not ready to book a flight to San Diego right now. Can momondo alert me if prices change?
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.
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Popular Flights to San Diego
Popular routes according to searches in the past day on momondo
Cheapest flight routes to San Diego
These routes have the cheapest flights to San Diego found by momondo users in United Kingdom
| Departing | Destination | Best Time | Best Price |
|---|---|---|---|
| London | San Diego | 11h 05m | £431 |
| Glasgow | San Diego | 14h 00m | £538 |
| Edinburgh | San Diego | 15h 25m | £541 |
| Manchester | San Diego | 14h 43m | £548 |
| Aberdeen | San Diego | 20h 04m | £565 |
| Birmingham | San Diego | 34h 01m | £613 |
| Newcastle upon Tyne | San Diego | 26h 25m | £760 |
| Bristol | San Diego | 26h 25m | £832 |
| Cardiff | San Diego | 19h 25m | £841 |
| Norwich | San Diego | 17h 21m | £877 |
| Leeds | San Diego | 35h 14m | £1,011 |