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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 21/7. 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

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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 - 14:50
BFS
-
DUB
7h 20m
1 stop
Multiple Airlines Logo
06:10 - 19:15
DUB
-
BFS
13h 05m
1 stop
£74Multiple Airlines
Wed, 15 Jul - Thu, 30 Jul
Multiple Airlines Logo
07:35 - 14:05
BFS
-
DUB
6h 30m
1 stop
Multiple Airlines Logo
20:20 - 07:05
DUB
-
BFS
10h 45m
1 stop
£76Multiple Airlines
Tue, 21 Jul - Tue, 28 Jul
Multiple Airlines Logo
08:40 - 20:10
BFS
-
DUB
11h 30m
1 stop
Multiple Airlines Logo
20:35 - 10:00
DUB
-
BFS
13h 25m
1 stop
£77Multiple Airlines
Mon, 20 Jul - Mon, 27 Jul
Multiple Airlines Logo
07:30 - 16:00
BFS
-
DUB
8h 30m
1 stop
Multiple Airlines Logo
14:30 - 19:50
DUB
-
BFS
5h 20m
1 stop
£80Multiple Airlines
Wed, 19 Aug - Wed, 26 Aug
Multiple Airlines Logo
15:40 - 21:30
BFS
-
DUB
5h 50m
1 stop
Multiple Airlines Logo
10:05 - 15:15
DUB
-
BFS
5h 10m
1 stop
£81Multiple Airlines
Wed, 19 Aug - Wed, 26 Aug
Multiple Airlines Logo
21:40 - 09:10
BFS
-
DUB
11h 30m
1 stop
Multiple Airlines Logo
06:05 - 10:00
DUB
-
BFS
3h 55m
1 stop
£82Multiple Airlines
Sat, 4 Jul - Tue, 7 Jul
Multiple Airlines Logo
08:40 - 18:10
BFS
-
DUB
9h 30m
1 stop
Multiple Airlines Logo
14:40 - 21:30
DUB
-
BFS
6h 50m
1 stop
£82Multiple Airlines
Mon, 20 Jul - Mon, 27 Jul
Multiple Airlines Logo
12:45 - 20:30
BFS
-
DUB
7h 45m
1 stop
Multiple Airlines Logo
21:10 - 10:00
DUB
-
BFS
12h 50m
1 stop
£83Multiple Airlines
Thu, 13 Aug - Mon, 17 Aug
Multiple Airlines Logo
21:40 - 09:10
BFS
-
DUB
11h 30m
1 stop
Multiple Airlines Logo
19:55 - 08:05
DUB
-
BFS
12h 10m
1 stop
£84Multiple Airlines
Sat, 8 Aug - Mon, 10 Aug
Multiple Airlines Logo
16:55 - 23:05
BFS
-
DUB
6h 10m
1 stop
Multiple Airlines Logo
21:10 - 10:00
DUB
-
BFS
12h 50m
1 stop
£85Multiple Airlines
Sat, 8 Aug - Mon, 10 Aug

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British Airways flights from Belfast to Dublin

Our best British Airways deals on Belfast to Dublin flight tickets
British Airways
19 Sept
BHD19:05Belfast City
12h 40m
1 stop
DUB07:45Dublin
22 Sept
DUB19:30Dublin
13h 30m
1 stop
BHD09:00Belfast City
£166
British Airways
13 Aug
BHD20:35Belfast City
11h 10m
1 stop
DUB07:45Dublin
17 Aug
DUB20:30Dublin
12h 20m
1 stop
BHD08:50Belfast City
£180
British Airways
8 Aug
BHD09:35Belfast City
8h 15m
1 stop
DUB17:50Dublin
10 Aug
DUB10:30Dublin
10h 05m
1 stop
BHD20:35Belfast City
£217

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 24 June 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 15/7

07:30-14:50

1 stop7h 20m

Dublin

Thu 30/7

06:10-19:15

1 stop13h 05m

£74

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Tue 21/7

07:35-14:05

1 stop6h 30m

Dublin

Tue 28/7

20:20-07:05

1 stop10h 45m

£76

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Mon 20/7

08:40-20:10

1 stop11h 30m

Dublin

Mon 27/7

20:35-10:00

1 stop13h 25m

£77

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Wed 19/8

07:30-16:00

1 stop8h 30m

Dublin

Wed 26/8

14:30-19:50

1 stop5h 20m

£80
Fastest return journey

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Wed 19/8

15:40-21:30

1 stop5h 50m

Dublin

Wed 26/8

10:05-15:15

1 stop5h 10m

£81

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Sat 4/7

21:40-09:10

1 stop11h 30m

Dublin

Tue 7/7

06:05-10:00

1 stop3h 55m

£82

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Mon 20/7

08:40-18:10

1 stop9h 30m

Dublin

Mon 27/7

14:40-21:30

1 stop6h 50m

£82

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Thu 13/8

12:45-20:30

1 stop7h 45m

Dublin

Mon 17/8

21:10-10:00

1 stop12h 50m

£83

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Sat 8/8

21:40-09:10

1 stop11h 30m

Dublin

Mon 10/8

19:55-08:05

1 stop12h 10m

£84

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Sat 8/8

16:55-23:05

1 stop6h 10m

Dublin

Mon 10/8

21:10-10:00

1 stop12h 50m

£85

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 00m

Direct flights

None
The fastest flight from Belfast to Dublin takes 3h 00m
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 00m 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
5,420 reviews
Search Ryanair flights
Aer LingusPriceFrom £77Free CancellationRating
7.3
1,626 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
Kilkenny
Swords
Dundalk
Athlone
Carlingford
Malahide
Wicklow
Drogheda
Bray
Kildare
Mullingar
Arklow
Enniscorthy
Gorey
Naas
Tullamore
Maynooth
Leixlip
Thurles

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.

An easier way to manage your Dublin trip

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