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Cheap flights from Belfast to Dublin from £43

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Belfast to Dublin departing on 23/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Belfast to Dublin

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
12:45 - 20:30BFS  Belfast Intl-DUB Dublin
7h 45m1 stop Manchester
Multiple Airlines Logo
15:45 - 22:20DUB  Dublin-BFS Belfast Intl
6h 35m1 stop Manchester
£71Multiple Airlines
Thu, 3 Sep - Thu, 10 Sep
Multiple Airlines Logo
18:50 - 00:05BFS  Belfast Intl-DUB Dublin
5h 15m1 stop London Stansted
Multiple Airlines Logo
21:10 - 10:00DUB  Dublin-BFS Belfast Intl
12h 50m1 stop Manchester
£72Multiple Airlines
Mon, 7 Sep - Mon, 21 Sep
Multiple Airlines Logo
07:35 - 16:25BFS  Belfast Intl-DUB Dublin
8h 50m1 stop Manchester
Multiple Airlines Logo
23:50 - 08:30DUB  Dublin-BFS Belfast Intl
8h 40m1 stop Manchester
£73Multiple Airlines
Tue, 8 Sep - Thu, 10 Sep
Multiple Airlines Logo
19:20 - 01:00BFS  Belfast Intl-DUB Dublin
5h 40m1 stop Edinburgh Turnhouse
Multiple Airlines Logo
07:55 - 15:05DUB  Dublin-BFS Belfast Intl
7h 10m1 stop Paris Beauvais-Tille
£74Multiple Airlines
Fri, 4 Sep - Fri, 11 Sep
Multiple Airlines Logo
08:40 - 14:55BFS  Belfast Intl-DUB Dublin
6h 15m1 stop Manchester
Multiple Airlines Logo
20:35 - 10:00DUB  Dublin-BFS Belfast Intl
13h 25m1 stop Manchester
£75Multiple Airlines
Mon, 7 Sep - Mon, 21 Sep
Multiple Airlines Logo
08:40 - 14:55BFS  Belfast Intl-DUB Dublin
6h 15m1 stop Manchester
Multiple Airlines Logo
09:00 - 18:25DUB  Dublin-BFS Belfast Intl
9h 25m1 stop Edinburgh Turnhouse
£76Multiple Airlines
Mon, 7 Sep - Mon, 14 Sep
Multiple Airlines Logo
08:40 - 14:55BFS  Belfast Intl-DUB Dublin
6h 15m1 stop Manchester
Multiple Airlines Logo
20:35 - 10:00DUB  Dublin-BFS Belfast Intl
13h 25m1 stop Manchester
£77Multiple Airlines
Mon, 7 Sep - Mon, 21 Sep
Multiple Airlines Logo
20:40 - 07:40BFS  Belfast Intl-DUB Dublin
11h 00m1 stop London Stansted
Multiple Airlines Logo
23:10 - 08:15DUB  Dublin-BFS Belfast Intl
9h 05m1 stop Manchester
£79Multiple Airlines
Thu, 3 Sep - Sun, 6 Sep
Multiple Airlines Logo
17:05 - 21:10BFS  Belfast Intl-DUB Dublin
4h 05m1 stop Manchester
Multiple Airlines Logo
21:10 - 10:00DUB  Dublin-BFS Belfast Intl
12h 50m1 stop Manchester
£80Multiple Airlines
Fri, 18 Sep - Mon, 21 Sep
Multiple Airlines Logo
19:20 - 23:00BFS  Belfast Intl-DUB Dublin
3h 40m1 stop Edinburgh Turnhouse
Multiple Airlines Logo
22:05 - 12:15DUB  Dublin-BFS Belfast Intl
14h 10m1 stop London Stansted
£81Multiple Airlines
Fri, 4 Sep - Mon, 7 Sep

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British Airways flights from Belfast to Dublin

Our best British Airways deals on Belfast to Dublin flight tickets
British Airways
1 Oct
BHD14:20Belfast City
5h 10m
1 stop
DUB19:30Dublin
5 Oct
DUB10:30Dublin
7h 10m
1 stop
BHD17:40Belfast City
£170
British Airways
18 Sept
BHD20:10Belfast City
11h 30m
1 stop
DUB07:40Dublin
21 Sept
DUB08:30Dublin
10h 15m
1 stop
BHD18:45Belfast City
£178
British Airways
12 Oct
BHD06:30Belfast City
13h 05m
1 stop
DUB19:35Dublin
14 Oct
DUB19:45Dublin
13h 05m
1 stop
BHD08:50Belfast City
£184

KLM flights from Belfast to Dublin

Our best KLM deals on Belfast to Dublin flight tickets
KLM
1 Oct
BHD17:30Belfast City
4h 55m
1 stop
DUB22:25Dublin
5 Oct
DUB05:55Dublin
11h 00m
1 stop
BHD16:55Belfast City
£389
KLM
18 Sept
BHD09:50Belfast City
6h 50m
1 stop
DUB16:40Dublin
21 Sept
DUB05:55Dublin
11h 00m
1 stop
BHD16:55Belfast City
£396

momondo Fare Finder

 
Customise your flight search to find flights from Belfast to Dublin that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 10 August 2026.
Use the filters below to find and compare flights from Belfast to Dublin that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastDublin

BFS Belfast Intl - DUB Dublin

BFSDUB

Belfast Intl

Thu 3/9

12:45-20:30

1 stop7h 45m

Dublin

Thu 10/9

15:45-22:20

1 stop6h 35m

£71

BelfastDublin

BFS Belfast Intl - DUB Dublin

BFSDUB

Belfast Intl

Mon 7/9

18:50-00:05

1 stop5h 15m

Dublin

Mon 21/9

21:10-10:00

1 stop12h 50m

£72

BelfastDublin

BFS Belfast Intl - DUB Dublin

BFSDUB

Belfast Intl

Tue 8/9

07:35-16:25

1 stop8h 50m

Dublin

Thu 10/9

23:50-08:30

1 stop8h 40m

£73
Fastest return journey

BelfastDublin

BFS Belfast Intl - DUB Dublin

BFSDUB

Belfast Intl

Fri 4/9

19:20-01:00

1 stop5h 40m

Dublin

Fri 11/9

07:55-15:05

1 stop7h 10m

£74

BelfastDublin

BFS Belfast Intl - DUB Dublin

BFSDUB

Belfast Intl

Mon 7/9

08:40-14:55

1 stop6h 15m

Dublin

Mon 21/9

20:35-10:00

1 stop13h 25m

£75

BelfastDublin

BFS Belfast Intl - DUB Dublin

BFSDUB

Belfast Intl

Mon 7/9

08:40-14:55

1 stop6h 15m

Dublin

Mon 14/9

09:00-18:25

1 stop9h 25m

£76

BelfastDublin

BFS Belfast Intl - DUB Dublin

BFSDUB

Belfast Intl

Mon 7/9

08:40-14:55

1 stop6h 15m

Dublin

Mon 21/9

20:35-10:00

1 stop13h 25m

£77

BelfastDublin

BFS Belfast Intl - DUB Dublin

BFSDUB

Belfast Intl

Thu 3/9

20:40-07:40

1 stop11h 00m

Dublin

Sun 6/9

23:10-08:15

1 stop9h 05m

£79

BelfastDublin

BFS Belfast Intl - DUB Dublin

BFSDUB

Belfast Intl

Fri 18/9

17:05-21:10

1 stop4h 05m

Dublin

Mon 21/9

21:10-10:00

1 stop12h 50m

£80

BelfastDublin

BFS Belfast Intl - DUB Dublin

BFSDUB

Belfast Intl

Fri 4/9

19:20-23:00

1 stop3h 40m

Dublin

Mon 7/9

22:05-12:15

1 stop14h 10m

£81

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Cheap Belfast to Dublin flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Belfast to Dublin

Fastest flight time

3h 30m

Direct flights

None
The fastest flight from Belfast to Dublin takes 3h 30m
There are no direct flights from Belfast to Dublin. There are no popular flight routes from Belfast to Dublin.
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Frequently asked questions about flying from Belfast to Dublin

  • How far is Belfast to Dublin by plane?

    The distance between Belfast and Dublin is about 87.5 mi. 3h 30m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Belfast to Dublin Airport?

    Prices for flights from Belfast to Dublin Airport were last updated today.

  • How old do you have to be to fly from Belfast to Dublin Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Belfast to Dublin Airport.

  • What documentation or ID do you need to fly to Dublin Airport?

    The travel and health documents you'll need for your trip to Dublin Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Dublin Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Belfast to Dublin

Compare and see reviews for airlines that fly from Belfast to Dublin with momondo
Airline
Rating
Free Cancellation
Price
RyanairPriceFrom £28Free CancellationRating
6.9
5,462 reviews
Search Ryanair flights
Aer LingusPriceFrom £74Free CancellationRating
7.3
1,693 reviews
Search Aer Lingus flights

Frequently asked questions about flying from Belfast to Dublin

  • How do I get Price Alerts for flights from Belfast to Dublin?

    Search flight deals from Belfast to Dublin. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from Belfast to Dublin with momondo?

    By using tools like our “Price Calendar”, you can see the best days for return flights on your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Travelling to a place near Dublin?

Book flights to Dublin if you plan to visit one of these locations
Cavan
Swords
Dundalk
Kilkenny
Athlone
Carlingford
Malahide
Wicklow
Drogheda
Bray
Mullingar
Kildare
Enniscorthy
Arklow
Tullamore
Naas
Gorey
Maynooth
Leixlip
Castleknock

Why use momondo?

Why should I use momondo to find a flight deal from Belfast to Dublin?

It is quick and easy to find Belfast to Dublin flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Dublin that suits you.

Can I find flights from Belfast to Dublin with flexible booking policies on momondo?

All flight searches from Belfast to Dublin on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Belfast to Dublin?

Once you have performed a search for Belfast to Dublin flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Belfast to Dublin right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Belfast to Dublin now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Dublin and let you know when they change.

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