Cheap Flights from Belfast to San Diego International from $1,617

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Flight deals from Belfast to San Diego International

Looking for a cheap last-minute deal or the best return flight from Belfast to San Diego International Airport? If you want to travel next month, return fares start from $2,265. Find the lowest prices on one-way and return tickets right here.

San Diego.$1,617 per passenger.Departing Mon, 14 Sep, returning Thu, 17 Sep.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Belfast City on Mon, 14 Sep, arriving in San Diego International.Inbound indirect flight with British Airways, departs from San Diego International on Thu, 17 Sep, arriving in Belfast City.Price includes taxes and charges.From $1,617, select.

San Diego.$1,719 per passenger.Departing Wed, 2 Dec, returning Tue, 15 Dec.Return flight with Delta.Outbound indirect flight with Delta, departs from Belfast City on Wed, 2 Dec, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Tue, 15 Dec, arriving in Belfast City.Price includes taxes and charges.From $1,719, select.

San Diego.$1,727 per passenger.Departing Thu, 1 Oct, returning Thu, 8 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from Belfast City on Thu, 1 Oct, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Thu, 8 Oct, arriving in Belfast City.Price includes taxes and charges.From $1,727, select.

San Diego.$1,755 per passenger.Departing Thu, 5 Nov, returning Sun, 15 Nov.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Belfast City on Thu, 5 Nov, arriving in San Diego International.Inbound indirect flight with British Airways, departs from San Diego International on Sun, 15 Nov, arriving in Belfast City.Price includes taxes and charges.From $1,755, select.

San Diego.$2,232 per passenger.Departing Mon, 20 Jul, returning Tue, 28 Jul.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Belfast City on Mon, 20 Jul, arriving in San Diego International.Inbound indirect flight with British Airways, departs from San Diego International on Tue, 28 Jul, arriving in Belfast City.Price includes taxes and charges.From $2,232, select.

San Diego.$2,265 per passenger.Departing Thu, 11 Jun, returning Wed, 17 Jun.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Belfast City on Thu, 11 Jun, arriving in San Diego International.Inbound indirect flight with British Airways, departs from San Diego International on Wed, 17 Jun, arriving in Belfast City.Price includes taxes and charges.From $2,265, select.

San Diego.$2,555 per passenger.Departing Sat, 25 Jul, returning Sat, 1 Aug.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Belfast City on Sat, 25 Jul, arriving in San Diego International.Inbound indirect flight with British Airways, departs from San Diego International on Sat, 1 Aug, arriving in Belfast City.Price includes taxes and charges.From $2,555, select.

San Diego.$2,637 per passenger.Departing Wed, 20 May, returning Sun, 24 May.Return flight with Delta.Outbound indirect flight with Delta, departs from Belfast City on Wed, 20 May, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Sun, 24 May, arriving in Belfast City.Price includes taxes and charges.From $2,637, select.

San Diego.$2,670 per passenger.Departing Mon, 3 Aug, returning Mon, 10 Aug.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Belfast City on Mon, 3 Aug, arriving in San Diego International.Inbound indirect flight with British Airways, departs from San Diego International on Mon, 10 Aug, arriving in Belfast City.Price includes taxes and charges.From $2,670, select.

Find the cheapest month to fly from Belfast to San Diego International

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

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Belfast to San Diego International: Alternative routes

Compare routes from Belfast to San Diego below. You may find an airport to fly into that's cheaper, faster, or easier than San Diego International.

San Diego International

4km from central San Diego

ClosestCheapest

from $1,617

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McClellan-Palomar

48km from central San Diego

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Belfast to San Diego: Flight information

The things to know before you go.

Cheapest flight found	$1,617
Cheapest month to fly	September

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

How much are return flights from Belfast to San Diego International?

The best price we found for a return flight from Belfast to San Diego International is $1,617. 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 International?

Currently, there are no airlines that fly direct from Belfast to San Diego International. But we found flights with one stop from $1,617.

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

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

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

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

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

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Belfast to San Diego International Airport on Monday, 14 September 2026.

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

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

How can I find the best flight deal to San Diego International?

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 International 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.

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

The cheapest airline that flies to San Diego International is British Airways .

Travelling from Belfast to San Diego International Airport (SAN): What you need to know

The timezone in San Diego is UTC-8, which is eight hours behind Belfast. San Diego International Airport is located in San Diego.
Arrive at the airport on time so you don't miss your flight from Belfast to SAN. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid the mad dash to your gate.
You'll want to head there even earlier during popular months like June. Aim for two hours before a domestic departure and four hours ahead of international flights. After checking in, you can use any extra time to grab something to eat or simply relax.

Airports in Belfast

Belfast International Airport (BFS)

Whether you're eager to explore another city along the way or just take a break, we make it a breeze to book a flight with a stopover. To check out your options leaving from Belfast International Airport (BFS), deselect 'Direct flights only.' Paris Charles de Gaulle Airport (CDG) is a stop you can make when searching for cheap flights from Belfast to SAN.
BFS is around 19 kilometres from central Belfast. If you're catching a taxi, ride-sharing or driving from the centre, it'll take 25 minutes or so to get there, depending on the traffic. If you're using public transport, expect the journey time to be around 45 minutes.
Searching for a comfortable hotel near Belfast International Airport? If you're catching an early flight from Belfast to San Diego International Airport, these accommodation options will have you sleeping just around the corner from the terminal:
Of all flights leaving Belfast International Airport, 68% land on schedule at their destination.

George Best Belfast City Airport (BHD)

Fit a stopover into your itinerary at London Heathrow Airport (LHR). It's a key transfer point for flights from Belfast to San Diego International Airport (SAN) leaving George Best Belfast City Airport.
You can arrive at BHD from central Belfast in approximately 15 minutes by car, depending on traffic conditions. The journey on public transport will take roughly 25 minutes to cover the 5 kilometres or so.
Want to treat yourself to an extra night away before your Belfast to SAN flight? Unwind in a hotel near George Best Belfast City Airport before your adventure officially begins. Here's where you can stay:
George Best Belfast City Airport has an on-time performance of 69%. This figure provides insight into how often flights that take off from this airport reach their destination on time.

About San Diego International Airport (SAN)

Have a late flight from Belfast to San Diego International Airport? Don't let it leave you bleary-eyed. Check in to one of these hotels near SAN and get cosy, quick:
Pick up a San Diego International Airport rental car and discover San Diego and beyond with your own wheels. Thrifty, Dollar and Budget are top providers to choose from here.
Lock in the best possible rate by reserving your vehicle around two weeks ahead of your Belfast to San Diego International Airport flight.
You'll find SAN at N Harbour Dr.

Getting from San Diego International Airport (SAN) to central San Diego

From San Diego International Airport, central San Diego is around 5 kilometres away. It takes about 15 minutes to get to the city centre by car.
It typically takes 25 minutes if you're travelling on public transport.

How to find the cheapest flights from Belfast to San Diego International Airport (SAN)

Right now, $1,019 is the best price we've found for a one-way ticket from Belfast to San Diego International Airport. The cheapest price for a return flight is $1,617. Keep in mind fares may change due to demand at the time of booking.
Don't leave everything to the last moment. You're more likely to find cheap flights from Belfast to SAN if you book ahead. Airlines often offer some amazing early bird deals.
The 'Whole month' tool will show you the cheapest Belfast to San Diego International Airport tickets throughout the entire month. It's a great way to snap up a bargain if your dates aren't set in stone.
There's no need to check every day to find out if fares have dropped when you create a Price Alert. We'll let you know the moment a better deal is available on plane tickets from Belfast to SAN.
Filters make it easier to snap up a deal on your flight from Belfast to San Diego International Airport. Choose the airlines, flight times and number of stops that look good to you. Then sort the results by 'Cheapest' to find the best price quickly.

The best time to fly from Belfast to San Diego International Airport (SAN)

May is the busiest month for flights from Belfast to San Diego International Airport (SAN). Visit San Diego in September for a more laid-back experience.
Book a Belfast to SAN plane ticket departing in August if you're eager to visit the city during its warmest month. You can expect temperatures in San Diego to range from 17ºC to 28ºC.
Look for cheap tickets from Belfast to San Diego International Airport in February if you'd rather travel when it's cooler. Temperatures are at their lowest then, ranging between 7ºC and 23ºC.

More about San Diego

When it comes to looking for somewhere to rest your head, you'll find the best places to stay in San Diego right here. Explore these hotels after locking in your flight from Belfast to San Diego International Airport:
You'll find plenty of things to do in San Diego when you're ready to get out and sightsee. Make your way to San Diego Zoo followed by San Diego Balboa Park and USS Midway Museum.

Explore more of the United States

Los Angeles is just one of the many cities in the United States waiting to be discovered after you've seen San Diego. Around 177 kilometres away to the northwest, its top attractions include Hollywood Sign, Universal Studios Hollywood and Hollywood Bowl.
Long Beach is another favourite destination in the United States and is around 145 kilometres northwest of San Diego. No journey is complete without experiencing The Queen Mary, Museum of Latin American Art (MOLAA) and Long Beach Convention and Entertainment Centre.