Cheap Flights from Belfast to San Diego

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Find the cheapest month or even day of the year to fly to San Diego

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Flight deals from Belfast to San Diego

Looking for a cheap last-minute deal or the best return flight from Belfast to San Diego? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Belfast to San Diego

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Belfast to San Diego flights are currently cheapest in September.

Alternative Belfast to San Diego routes

Looking for the cheapest, fastest or easiest route from Belfast to San Diego? You could fly into the following airports instead.

Belfast to San Diego: Flight information

The things to know before you go.
Cheapest flight foundR 6,947
Cheapest month to flySeptember

Finding cheap flights from Belfast to San Diego: Frequently asked questions

There are 2 airports in San Diego: San Diego International and McClellan-Palomar.
The best price we found for a return flight from Belfast to San Diego is R 13,198. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Belfast to San Diego. But we found flights with one or more stops from R 13,198.
As of July 2025, there are no flights flying from Belfast to San Diego.
The cheapest month to fly from Belfast to San Diego is usually October.
If you're flying from Belfast, the cheapest airport near San Diego is San Diego International – which is 4.1 km away from the centre of San Diego. We've found flights into this airport from R 13,198.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Belfast to San Diego on Wednesday, 29 October 2025.
No airlines currently offer direct flights between Belfast and San Diego. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Diego but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Diego is around 40 days in advance, so don’t leave your flight to the last minute.
In July, the average temperature is usually around 22°C. August is typically the warmest month in San Diego, when it usually averages around 28°C. You can expect the least rain in June. The coldest month is December, with temperatures averaging 10°C. The rainiest month is February.
The cheapest airline that flies to San Diego is British Airways .

Travelling from Belfast to San Diego: what you need to know

  • Get your holiday planning started by considering the departure point for your flight from Belfast to San Diego. Belfast International Airport (BFS) and George Best Belfast City Airport (BHD) are the main airports in Belfast.

  • San Diego International Airport (SAN) is where you'll be landing in San Diego.

  • San Diego is seven hours behind Belfast and follows the UTC-7 timezone.

  • Give yourself plenty of time to make your Belfast to San Diego flight. As a general rule, turn up two hours before international departures and an hour ahead for domestic flights.

  • You can expect bigger queues during popular months such as August. Arriving up to four hours ahead of international flights and two hours for a domestic departure is a wise move.

How to find the cheapest flights from Belfast to San Diego

  • To find cheap Belfast to San Diego flights, book as early as possible. Airlines usually offer their most competitively priced fares when tickets first go on sale.

  • The 'Whole month' tool will show you the cheapest plane tickets from Belfast to San Diego across the month. It's a good way to find a bargain if your trip dates aren't set in stone.

  • Never miss a deal on cheap flights from Belfast to San Diego by setting up a Price Alert. We'll send you an email or push notification on the app when fares go down.

  • Tailor your travel plans using filters. Select your preferred arrival and departure times, total journey duration and airlines. You can also sort your results by 'Best,' 'Fastest' or 'Cheapest' Belfast to San Diego flights.

Flying from Belfast

Belfast International Airport (BFS)

  • Stopovers offer a great opportunity to visit a new place or just take a break during your trip. When searching for a Belfast to San Diego flight, uncheck 'Direct flights only' to explore all potential stops. Charles de Gaulle Airport (CDG) is one option if you're leaving from Belfast International Airport.

  • BFS is about 19 kilometres from central Belfast. If you're driving, ride-sharing or catching a cab from the centre, it'll take you 30 minutes or so to get there, depending on traffic conditions. If you're using public transport, expect the travel time to be around 2 hours.

  • Want a leisurely start to your journey? Stay near Belfast International Airport. Whether you've booked an early flight from Belfast to San Diego or want to avoid feeling rushed, these hotels have you covered:

  • 67.55% of flights departing from Belfast International Airport arrive at their destination on schedule.

George Best Belfast City Airport (BHD)

  • Think about adding a stop at London Heathrow Airport (LHR). It's a major stopover on a Belfast to San Diego flight departing George Best Belfast City Airport. Use a longer layover to get out and explore, or take advantage of a short break to browse the airport stores.

  • You can reach BHD from central Belfast in about 10 minutes by car (depending on traffic). The journey on public transport takes roughly 20 minutes to cover the 5 kilometres or so.

  • Get a head start on your holiday with an extra night away from home. Before catching your flight from Belfast to San Diego, take it easy in one of these hotels close to George Best Belfast City Airport:

  • George Best Belfast City Airport has an on-time performance of 68.3%. This figure gives an insight into how often flights that depart from this airport land at their destination on schedule.

Arriving in San Diego

San Diego International Airport (SAN)

  • San Diego International Airport (SAN) to central San Diego takes around 10 minutes to reach by car. The centre is roughly 3 kilometres away.

  • It usually takes 20 minutes to get there on public transport.

  • If you're arriving on a late flight from Belfast to San Diego, nothing beats the convenience of staying near the terminal. Grab your bags from the carousel and then be showered and snoozing soon after at one of these accommodation options near SAN:

  • Pick up a San Diego International Airport rental car and explore San Diego and beyond with your own wheels. Thrifty, Dollar and Budget are top outlets to choose from here.

  • To secure the lowest price, reserve your vehicle from San Diego International Airport around two weeks ahead of your Belfast to San Diego flight.

  • The address for SAN is N Harbour Dr.

McClellan-Palomar Airport (CLD)

  • McClellan-Palomar Airport (CLD) is about 48 kilometres from the centre of San Diego. Once you've disembarked your flight from Belfast to San Diego, it takes approximately 40 minutes to reach the heart of the city in a cab or ride-share.

  • Public transport will get you there in about 2 hours 15 minutes.

  • Budget, Hertz and Avis make picking up a McClellan-Palomar Airport rental car easy and quick. These reliable suppliers are located around or in the terminal and will have you ready to go in a flash.

  • Usually, the sooner you book, the better the prices and vehicle selection. Reserve your ride from CLD once your travel dates are set.

Best time to go to San Diego

  • It's time to choose your dates for your flight from Belfast to San Diego. July is the busiest month for a trip to San Diego. If you like a more relaxed vibe, go in May.

  • The warmest month in San Diego is August, with temperatures ranging between 17ºC (63ºF) and 28ºC (82ºF). Lock in your Belfast to San Diego ticket then if that's your idea of comfortable weather.

  • February sees average temperatures of between 7ºC (45ºF) and 23ºC (73ºF). Search for cheap flights from Belfast to San Diego around that time if you want to travel in cooler conditions.

More about San Diego

  • Once you've booked your flight from Belfast to San Diego, take your pick from prime hotels that put you close to the action. Make one of these accommodation options your base for exploring San Diego:

  • There are so many things to see and do in this city it can be tricky to work out where to begin. San Diego Zoo, USS Midway Museum and SeaWorld San Diego are popular attractions which should feature on any good San Diego itinerary.

Explore more of United States

  • San Diego has loads to offer, but there are so many other corners of United States waiting to be explored. About 177 kilometres north-west of San Diego, a visit to Los Angeles will keep you busy. Start with attractions like Griffith Observatory, The Broad and La Brea Tar Pits & Museum.

  • Around 483 kilometres east of San Diego, Phoenix is another essential stop in United States. Get a taste of what this destination has to offer at Desert Botanical Garden, Heard Museum and Papago Park.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.