753 € Belfast (BELF) to San Diego (SANA) Cheap Flights

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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? If you want to travel next month, return fares start from 902 €. Find the lowest prices on one-way and return tickets right here.

San Diego.753 € per passenger.Departing Sat, 26 Sep, returning Sat, 3 Oct.Return flight with Ryanair and Frontier Airlines.Outbound indirect flight with Ryanair, departs from Belfast International on Sat, 26 Sep, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Sat, 3 Oct, arriving in Belfast International.Price includes taxes and charges.From 753 €, select.

San Diego.756 € per passenger.Departing Mon, 21 Sep, returning Mon, 28 Sep.Return flight with easyJet and Frontier Airlines.Outbound indirect flight with easyJet, departs from Belfast International on Mon, 21 Sep, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Mon, 28 Sep, arriving in Belfast International.Price includes taxes and charges.From 756 €, select.

San Diego.804 € per passenger.Departing Mon, 12 Oct, returning Sun, 18 Oct.Return flight with easyJet and KLM.Outbound indirect flight with easyJet, departs from Belfast International on Mon, 12 Oct, arriving in San Diego International.Inbound indirect flight with KLM, departs from San Diego International on Sun, 18 Oct, arriving in Belfast International.Price includes taxes and charges.From 804 €, select.

San Diego.829 € per passenger.Departing Wed, 3 Feb, returning Wed, 10 Feb.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Belfast City on Wed, 3 Feb, arriving in San Diego International.Inbound indirect flight with British Airways, departs from San Diego International on Wed, 10 Feb, arriving in Belfast City.Price includes taxes and charges.From 829 €, select.

San Diego.832 € per passenger.Departing Mon, 7 Dec, returning Mon, 14 Dec.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Belfast City on Mon, 7 Dec, arriving in San Diego International.Inbound indirect flight with British Airways, departs from San Diego International on Mon, 14 Dec, arriving in Belfast City.Price includes taxes and charges.From 832 €, select.

San Diego.835 € per passenger.Departing Fri, 23 Oct, returning Sun, 1 Nov.Return flight with easyJet and Alaska Airlines.Outbound indirect flight with easyJet, departs from Belfast International on Fri, 23 Oct, arriving in San Diego International.Inbound indirect flight with Alaska Airlines, departs from San Diego International on Sun, 1 Nov, arriving in Belfast International.Price includes taxes and charges.From 835 €, select.

San Diego.848 € per passenger.Departing Wed, 5 May, returning Wed, 19 May.Return flight with Delta.Outbound indirect flight with Delta, departs from Belfast City on Wed, 5 May, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Wed, 19 May, arriving in Belfast City.Price includes taxes and charges.From 848 €, select.

San Diego.864 € per passenger.Departing Mon, 4 Jan, returning Sun, 28 Feb.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Belfast City on Mon, 4 Jan, arriving in San Diego International.Inbound indirect flight with British Airways, departs from San Diego International on Sun, 28 Feb, arriving in Belfast City.Price includes taxes and charges.From 864 €, select.

San Diego.888 € per passenger.Departing Wed, 2 Dec, returning Mon, 4 Jan.Return flight with easyJet and KLM.Outbound indirect flight with easyJet, departs from Belfast International on Wed, 2 Dec, arriving in San Diego International.Inbound indirect flight with KLM, departs from San Diego International on Mon, 4 Jan, arriving in Belfast International.Price includes taxes and charges.From 888 €, select.

San Diego.902 € per passenger.Departing Mon, 17 Aug, returning Mon, 24 Aug.Return flight with easyJet and Alaska Airlines.Outbound indirect flight with easyJet, departs from Belfast International on Mon, 17 Aug, arriving in San Diego International.Inbound indirect flight with Alaska Airlines, departs from San Diego International on Mon, 24 Aug, arriving in Belfast International.Price includes taxes and charges.From 902 €, select.

San Diego.943 € per passenger.Departing Thu, 25 Mar, returning Sun, 4 Apr.Return flight with easyJet and Air France.Outbound indirect flight with easyJet, departs from Belfast International on Thu, 25 Mar, arriving in San Diego International.Inbound indirect flight with Air France, departs from San Diego International on Sun, 4 Apr, arriving in Belfast International.Price includes taxes and charges.From 943 €, select.

San Diego.973 € per passenger.Departing Wed, 22 Jul, returning Sun, 26 Jul.Return flight with easyJet and jetBlue.Outbound indirect flight with easyJet, departs from Belfast International on Wed, 22 Jul, arriving in San Diego International.Inbound indirect flight with jetBlue, departs from San Diego International on Sun, 26 Jul, arriving in Belfast International.Price includes taxes and charges.From 973 €, select.

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.

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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.

San Diego International

4km from central San Diego

ClosestCheapest

from 753 €

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McClellan-Palomar

48km from central San Diego

Search flights

Belfast to San Diego: Flight information

The things to know before you go.

Cheapest flight found	753 €
Cheapest month to fly	September

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

How many airports are there in San Diego?

There are 2 airports in San Diego: San Diego International and McClellan-Palomar.

How much are return flights from Belfast to San Diego?

The best price we found for a return flight from Belfast to San Diego is 753 €. 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.

Which airlines fly direct from Belfast to San Diego?

Currently, there are no airlines that fly direct from Belfast to San Diego. But we found flights with one or more stops from 753 €.

How many flights are there a week from Belfast to San Diego?

As of July 2026, there are no flights flying from Belfast to San Diego.

When is the cheapest time to fly from Belfast to San Diego?

The cheapest month to fly from Belfast to San Diego is usually September.

Which is the cheapest airport to fly into in San Diego?

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 753 €.

Which upcoming date is cheapest to fly from Belfast to San Diego on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Belfast to San Diego on Saturday, 26 September 2026.

Can I get a direct flight from Belfast to San Diego?

No airlines currently offer direct flights between Belfast and San Diego. Most routes have one or more stops.

How can I get the best flight deal from Belfast to San Diego?

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.

When is the best time to book flights to San Diego?

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.

What’s the weather like in San Diego?

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.

Which is the cheapest airline to fly from Belfast to San Diego with?

The cheapest airline that flies to San Diego is Ryanair .

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

Get your holiday planning started by considering where you'll catch your flight from Belfast to San Diego. Belfast International Airport (BFS) and George Best Belfast City Airport (BHD) are Belfast's main airports.
San Diego International Airport (SAN) is where you'll be arriving in San Diego.
San Diego's timezone is UTC-7, which makes San Diego seven hours behind Belfast.
Give yourself enough time to make your Belfast to San Diego flight. A good rule of thumb is to arrive two hours before international departures and an hour ahead for domestic flights.
You can expect longer queues in popular months like August. Arriving up to four hours ahead of an international flight and two hours for a domestic departure is a good idea.

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)

Finding a stopover on your Belfast to San Diego flight is easy. Whether you'd like to potentially save on your fare or explore a new city, just deselect 'Direct flights only' to check out your options. A key stop when taking off from Belfast International Airport is Charles de Gaulle Airport (CDG).
BFS is around 19 kilometres from central Belfast. If you're ride-sharing, driving or catching a cab from the centre, it'll take 30 minutes or so to get there, depending on the traffic. If you're taking public transport, expect the travel time to be around 2 hours.
After a leisurely start to your break? Stay near Belfast International Airport. Whether you have an early flight from Belfast to San Diego or just don't want to be rushed, these hotels are just the thing:
Of all flights leaving Belfast International Airport, 67.55% touch down on time at their destination.

George Best Belfast City Airport (BHD)

Break up your Belfast to San Diego flight with a stop at London Heathrow Airport (LHR). One of the main stopovers between George Best Belfast City Airport and San Diego, it's the perfect opportunity to recharge before the next leg of your journey.
BHD is around 5 kilometres from central Belfast. It'll take 10 minutes or so to get to the airport driving from the city centre. Public transport takes roughly 20 minutes.
You're going on holiday, so why not enjoy an additional night away? Think about checking in to one of these accommodation options near George Best Belfast City Airport the day before your flight from Belfast to San Diego:
George Best Belfast City Airport has an on-time performance of 68%. This figure gives an insight into how frequently flights that depart from this airport make it to their destination on time.

Arriving in San Diego

San Diego International Airport (SAN)

San Diego International Airport (SAN) is approximately 5 kilometres from central San Diego. If you're catching a cab or a ride-share, the drive will take around 10 minutes.
If you're using public transport, expect a journey time of roughly 20 minutes.
If you're coming in on a late flight from Belfast to San Diego, nothing beats the convenience of staying close to the terminal. Grab your suitcases from the carousel and then be showered and resting not long after at one of these hotels near SAN:
Pick up a San Diego International Airport rental car and discover San Diego and beyond with your own wheels. Thrifty, Dollar and Budget are popular providers to choose from here.
To lock in the lowest price, reserve your vehicle from San Diego International Airport about two weeks in advance of your Belfast to San Diego flight.
The street address for SAN is N Harbour Dr.

McClellan-Palomar Airport (CLD)

Central San Diego is approximately 48 kilometres from McClellan-Palomar Airport (CLD). After your flight from Belfast to San Diego has hit the runway and you've made your way out of the airport, expect a drive of around 40 minutes.
The journey will take roughly 2 hours 15 minutes on public transport.
Forget about public transport timetables or waiting forever for a cab. Pick up a McClellan-Palomar Airport rental car and blaze your own trail. Check out the rates and availability from Budget, Hertz and Avis.
Generally speaking, the earlier you book, the better the deals and selection of vehicles. Secure 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

Start your San Diego trip off on the right foot by choosing the ideal place to stay. As soon as you've booked your flight from Belfast to San Diego, browse our selection of hotels including:
All great adventures should include a little sightseeing. San Diego Zoo, USS Midway Museum and SeaWorld San Diego are must-do's during your San Diego adventure.

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.