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Cheap flights from Belfast to Dublin from £40

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 15/4. 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
0 bags

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Find the cheapest flights from Belfast to Dublin

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
07:30 - 12:30
BFS
-
DUB
5h 00m
1 stop
Multiple Airlines Logo
23:50 - 08:30
DUB
-
BFS
8h 40m
1 stop
£74Multiple Airlines
Wed, 6 May - Thu, 7 May
Multiple Airlines Logo
12:45 - 20:30
BFS
-
DUB
7h 45m
1 stop
Multiple Airlines Logo
10:20 - 15:20
DUB
-
BFS
5h 00m
1 stop
£75Multiple Airlines
Thu, 21 May - Thu, 28 May
Multiple Airlines Logo
07:35 - 14:05
BFS
-
DUB
6h 30m
1 stop
Multiple Airlines Logo
21:20 - 07:05
DUB
-
BFS
9h 45m
1 stop
£76Multiple Airlines
Tue, 19 May - Tue, 26 May
Multiple Airlines Logo
09:15 - 17:10
BFS
-
DUB
7h 55m
1 stop
Multiple Airlines Logo
21:10 - 10:00
DUB
-
BFS
12h 50m
1 stop
£77Multiple Airlines
Thu, 14 May - Mon, 18 May
Multiple Airlines Logo
12:45 - 20:30
BFS
-
DUB
7h 45m
1 stop
Multiple Airlines Logo
20:35 - 10:00
DUB
-
BFS
13h 25m
1 stop
£78Multiple Airlines
Thu, 14 May - Mon, 18 May
Multiple Airlines Logo
19:20 - 09:20
BFS
-
DUB
14h 00m
1 stop
Multiple Airlines Logo
21:05 - 10:45
DUB
-
BFS
13h 40m
1 stop
£79Multiple Airlines
Fri, 1 May - Fri, 8 May
Multiple Airlines Logo
05:55 - 10:25
BFS
-
DUB
4h 30m
1 stop
Multiple Airlines Logo
06:55 - 15:20
DUB
-
BFS
8h 25m
1 stop
£81Multiple Airlines
Wed, 29 Apr - Mon, 4 May
Multiple Airlines Logo
06:10 - 09:50
BFS
-
DUB
3h 40m
1 stop
Multiple Airlines Logo
20:35 - 10:00
DUB
-
BFS
13h 25m
1 stop
£92Multiple Airlines
Mon, 4 May - Mon, 11 May
Multiple Airlines Logo
11:05 - 23:25
BHD
-
DUB
12h 20m
1 stop
Multiple Airlines Logo
07:40 - 14:30
DUB
-
BHD
6h 50m
1 stop
£92Multiple Airlines
Thu, 7 May - Thu, 14 May
Multiple Airlines Logo
12:45 - 20:30
BFS
-
DUB
7h 45m
1 stop
Multiple Airlines Logo
09:20 - 22:20
DUB
-
BFS
13h 00m
2 stops
£94Multiple Airlines
Thu, 21 May - Thu, 28 May

British Airways flights from Belfast to Dublin

Our best British Airways deals on Belfast to Dublin flight tickets
British Airways
14 May
BHD14:20Belfast City
5h 10m
1 stop
DUB19:30Dublin
18 May
DUB20:30Dublin
12h 20m
1 stop
BHD08:50Belfast City
£201
British Airways
26 Aug
BHD06:30Belfast City
12h 20m
1 stop
DUB18:50Dublin
27 Aug
DUB18:50Dublin
13h 55m
1 stop
BHD08:45Belfast City
£207
British Airways
5 Oct
BHD19:35Belfast City
12h 10m
1 stop
DUB07:45Dublin
8 Oct
DUB10:30Dublin
5h 10m
1 stop
BHD15:40Belfast City
£232

KLM flights from Belfast to Dublin

Our best KLM deals on Belfast to Dublin flight tickets
KLM
14 May
BHD17:30Belfast City
14h 50m
1 stop
DUB08:20Dublin
18 May
DUB11:10Dublin
22h 10m
1 stop
BHD09:20Belfast City
£434
KLM
15 May
BHD17:30Belfast City
4h 55m
1 stop
DUB22:25Dublin
18 May
DUB11:10Dublin
22h 10m
1 stop
BHD09:20Belfast City
£446

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 8 April 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 - DUB

BFSDUB

Belfast Intl

Wed 6/5

07:30-12:30

1 stop5h 00m

Dublin

Thu 7/5

23:50-08:30

1 stop8h 40m

£74
Fastest return journey

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Thu 21/5

12:45-20:30

1 stop7h 45m

Dublin

Thu 28/5

10:20-15:20

1 stop5h 00m

£75

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Tue 19/5

07:35-14:05

1 stop6h 30m

Dublin

Tue 26/5

21:20-07:05

1 stop9h 45m

£76

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Thu 14/5

09:15-17:10

1 stop7h 55m

Dublin

Mon 18/5

21:10-10:00

1 stop12h 50m

£77

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Thu 14/5

12:45-20:30

1 stop7h 45m

Dublin

Mon 18/5

20:35-10:00

1 stop13h 25m

£78

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Fri 1/5

19:20-09:20

1 stop14h 00m

Dublin

Fri 8/5

21:05-10:45

1 stop13h 40m

£79

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Wed 29/4

05:55-10:25

1 stop4h 30m

Dublin

Mon 4/5

06:55-15:20

1 stop8h 25m

£81

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Mon 4/5

06:10-09:50

1 stop3h 40m

Dublin

Mon 11/5

20:35-10:00

1 stop13h 25m

£92

BelfastDublin

BHD - DUB

BHDDUB

Belfast City

Thu 7/5

11:05-23:25

1 stop12h 20m

Dublin

Thu 14/5

07:40-14:30

1 stop6h 50m

£92

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Thu 21/5

12:45-20:30

1 stop7h 45m

Dublin

Thu 28/5

09:20-22:20

2 stops13h 00m

£94

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Dublin from

How to get the cheapest flight ticket from Belfast to Dublin

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Belfast to Dublin?

British Airways is the most popular carrier operating from Belfast to Dublin

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

4h 25m

Direct flights

None
The fastest flight from Belfast to Dublin takes 4h 25m
There are no direct flights from Belfast to Dublin. There are no popular flight routes from Belfast to Dublin.
Search flight deals

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. 4h 25m 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 £39Free CancellationRating
6.9
5,321 reviews
Search Ryanair flights
Aer LingusPriceFrom £70Free CancellationRating
7.2
1,499 reviews
Search Aer Lingus flights

Travelling to a place near Dublin?

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

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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