Cheap flights from Belfast International to Dublin

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Compare Belfast International to Dublin flight deals

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Flight deals from Belfast International to Dublin

Looking for a cheap last-minute deal or the best round-trip flight from Belfast International to Dublin? Find the lowest prices on one-way and round-trip tickets right here.

Find the cheapest month to fly from Belfast International to Dublin

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

Belfast International to Dublin: Alternative routes

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

Belfast to Dublin: Flight information

The things to know before you go.
Cheapest flight foundC$200
Cheapest month to flySeptember

Finding cheap flights from Belfast International to Dublin: Frequently asked questions

The best price we found for a round-trip flight from Belfast International to Dublin is C$200. 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 International to Dublin. But we found flights with one or more stops from C$200.
There are no flights flying from Belfast International to Dublin, as of April 2025.
The cheapest month to fly from Belfast International to Dublin is usually April 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Belfast International Airport to Dublin Airport on Monday, September 22, 2025.
No airlines currently offer direct flights between Belfast International Airport and Dublin Airport. 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 Dublin 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 Dublin is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Ryanair offers the cheapest flight tickets to Dublin.

Travelling from Belfast International Airport (BFS) to Dublin Airport (DUB): what you need to know

  • Belfast and Dublin follow the same timezone, UTC+0.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are travel rules to live by. Get to the airport on time to catch your BFS to DUB flight.

  • During popular months such as August, it's best to get to the airport earlier. Plan to arrive two hours before domestic departures and four hours ahead for international flights when you travel during a peak period in general.

  • If you want to break up your flight, just uncheck 'Direct flights only' when searching for your ticket from Belfast International Airport to Dublin Airport. Here are the most popular stopovers between BFS and DUB:

    • Glasgow International Airport

    • Newcastle International Airport

    • Birmingham International Airport

How to find the cheapest flights from Belfast International Airport (BFS) to Dublin Airport (DUB)

  • C$82 is the lowest price for a one-way Belfast International Airport to Dublin Airport flight. Return flights start from C$200. These prices can change depending on demand and availability.

  • Don't wait until the last minute. You're more likely to get cheap tickets from BFS to DUB if you book in advance. Airlines often offer some fantastic early bird discounts.

  • The 'Whole month' tool shows you the cheapest flights from Belfast International Airport to Dublin Airport across the entire month. It's a good way to find a bargain if your dates aren't set in stone.

  • Picking up cheap flights from BFS to DUB is easy with Price Alerts. All you need to do is create one of these automatic alerts and we'll notify you when a new discounted fare appears.

  • Secure the right flight for you with the help of the filters. To see the 'Cheapest,' 'Best' or 'Fastest' flights from Belfast International Airport to Dublin Airport, use the 'Sort by' tool. You can also filter by departure and arrival times, airline, and journey duration.

Handy information about Belfast International Airport (BFS)

  • 67.55% of flights that depart Belfast International Airport land at their destination on time.

  • Central Belfast to Belfast International Airport is around 32 kilometres. Depending on traffic, it'll take about 30 minutes to get there if you're driving, ride-sharing or catching a cab.

  • You can expect a journey time of roughly 2 hours on public transport.

  • Get your trip off to a leisurely start by staying near BFS. Whether you've booked an early flight from Belfast International Airport to Dublin Airport or want to avoid feeling rushed, these hotels have you covered:

Arriving at Dublin Airport (DUB)

Getting from Dublin Airport (DUB) to central Dublin

  • From Dublin Airport, Dublin is approximately 21 kilometres away. It takes around 30 minutes to get to the centre driving.

  • If you're travelling by public transport, expect a journey of roughly 2 hours 10 minutes.

When to fly to Dublin Airport (DUB)

  • August is the busiest month for flights from Belfast International Airport to Dublin Airport. To avoid the crowds, go to Dublin in January.

  • Lock in your flight from Belfast International Airport to Dublin Airport for July if you'd like to go to Dublin during its warmest month. You can expect temperatures of between 10ºC (50ºF) and 20ºC (68ºF).

  • January sees average temperatures of between 1ºC (34ºF) and 9ºC (48ºF). Look for cheap tickets from BFS to DUB sometime around then if you like travelling in cooler conditions.

Explore more of Ireland

  • Dublin is easy to fall in love with, but there are so many other corners of Ireland waiting to be discovered. About 225 kilometres south-west of Dublin, a trip to Cork will keep you on the go. Don't miss top attractions like Blarney Castle, Fota Wildlife Park and Titanic Experience Cobh.

  • Around 10 kilometres south-west of Dublin, Tallaght is another essential stop in Ireland. Experience this destination's highlights firsthand at Church of the Incarnation, Fettercairn, 3 stuffed bears and Johnson & Perrott Fleet.

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