$45 Flights from Belfast (BELF) to Dublin (DUB)

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Flight deals from Belfast to Dublin Airport

Looking for a cheap last-minute deal or the best round-trip flight from Belfast to Dublin Airport? If you want to travel next month, round-trip fares start from $93. Find the lowest prices on one-way and round-trip tickets right here.

Find the cheapest month to fly from Belfast to Dublin

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

Belfast to Dublin: Alternative routes

Compare routes from Belfast 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 found$45
Cheapest month to flyMarch

Finding cheap flights from Belfast to Dublin: Frequently asked questions

The best price we found for a round-trip flight from Belfast to Dublin is $93. 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 Dublin. But we found flights with one stop from $93.
There are no flights flying from Belfast to Dublin, as of March 2026.
The cheapest month to fly from Belfast to Dublin is usually April.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Belfast to Dublin Airport on Tuesday, April 28, 2026.
No airlines currently offer direct flights between Belfast 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.
The cheapest airline that flies to Dublin is Ryanair.

Traveling from Belfast to Dublin Airport (DUB): What you need to know

  • Dublin Airport is located in Dublin. The city's timezone is UTC+0, which is the same as Belfast.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for stress-free travel. Show up at the airport on time to board your flight from Belfast to DUB.

  • You can expect longer queues during popular months like September and other peak periods. Arriving up to four hours ahead of international flights and two hours for a domestic departure will help ensure a smooth travel experience.

Airports in Belfast

Belfast International Airport (BFS)

  • A stopover is the perfect opportunity to take a travel break and perhaps even explore a different city. When searching for cheap flights from Belfast to DUB departing from Belfast International Airport (BFS), deselect the 'Direct flights only' box to find out where you can stop along the way. Top options include:

    • Birmingham Airport (BHX)

    • Glasgow Airport (GLA)

    • Newcastle International Airport (NCL)

  • BFS is about 12 miles from central Belfast. If you're driving, catching a cab or ride-sharing from the center, it'll take you 25 minutes or so to get there, depending on traffic. If you're taking public transport, expect the journey time to be around 45 minutes.

  • Want a stress-free start to your trip? Stay near Belfast International Airport. Whether you're catching an early flight from Belfast to Dublin Airport or prefer not to feel hurried, these hotels offer the perfect solution:

  • Belfast International Airport has an excellent on-time record, so you're unlikely to face delays. Departures from BFS land on schedule 82% of the time.

George Best Belfast City Airport (BHD)

  • Turn your flight into part of the adventure with a stopover on your flight from Belfast to Dublin Airport. Here's where you can connect between George Best Belfast City Airport and DUB:

    • Manchester Airport (MAN)

    • Edinburgh Airport (EDI)

    • Birmingham Airport (BHX)

  • BHD is around 3 miles from central Belfast. It takes 15 minutes or so to get to the airport in a car from the city center. Public transport takes approximately 25 minutes.

  • Got an early start? Think about staying at one of these accommodation options near George Best Belfast City Airport the day before your Belfast to DUB flight:

  • George Best Belfast City Airport is known for its commitment to punctuality. 80% of flights departing here arrive right on target.

About Dublin Airport (DUB)

Getting from Dublin Airport (DUB) to central Dublin

  • Central Dublin is around 7 miles from Dublin Airport and takes about 25 minutes to reach by car. See what your options are for making the trip into the city, whether that's with a cab, car rental or ride-share.

  • It takes roughly 30 minutes to get there using public transport.

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

  • Right now, $45 is the lowest price we've found for a one-way ticket from Belfast to Dublin Airport. The cheapest price for a return flight is $93. 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 DUB if you book ahead. Airlines often offer some excellent early bird deals.

  • Affordable Belfast to Dublin Airport tickets are easier to find when your travel dates are flexible. Use the 'Whole month' search function to compare fares across each month and then choose the cheapest day.

  • Never miss a deal on plane tickets from Belfast to DUB by setting up a Price Alert. We'll send you an email or notification through the app when fares go down.

  • Uncover a great deal on a flight from Belfast to Dublin Airport with the help of the filters. Pick your preferred arrival and departure times, number of stops and airlines. You can also sort your results by 'Fastest,' 'Cheapest' or 'Best.'

The best time to fly from Belfast to Dublin Airport (DUB)

  • December is the quietest month for flights from Belfast to Dublin Airport (DUB), while July is the most popular. Work out the ideal time to visit Dublin based on whether you like a laid-back vibe or a more bustling atmosphere.

  • Book a Belfast to DUB plane ticket departing in July if you're eager to explore the city during its warmest month. Expect temperatures in Dublin to range from 50ºF to 66ºF.

  • January has temperatures of between 36ºF and 48ºF. Search for cheap tickets from Belfast to Dublin Airport around that time if you like traveling in cooler conditions.

More about Dublin

Explore more of Ireland

  • Dublin is always a good idea, but there are so many other corners of Ireland you should also see. Around 140 miles southwest of Dublin, a trip to Cork will keep your itinerary busy. Check out popular attractions like Blarney Castle & Gardens, Blarney Castle House(Teach Caisleán na Blarnan) and Blarney Stone.

  • Waterford is another favorite destination in Ireland and is around 90 miles southwest of Dublin. No trip is complete without seeing Bishop's Palace, Christ Church Cathedral and Waterford Treasures Medieval Museum.

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