Latest deals
FAQs
Reviews
Price Alerts

Cheap flights from Belfast to Dublin from £42

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 19/8. 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
07:30 - 20:30
BFS
-
DUB
13h 00m
1 stop
Multiple Airlines Logo
06:30 - 15:15
DUB
-
BFS
8h 45m
1 stop
£73Multiple Airlines
Wed, 9 Sep - Wed, 16 Sep
Multiple Airlines Logo
07:35 - 19:50
BFS
-
DUB
12h 15m
1 stop
Multiple Airlines Logo
21:20 - 07:05
DUB
-
BFS
9h 45m
1 stop
£74Multiple Airlines
Tue, 8 Sep - Tue, 15 Sep
Multiple Airlines Logo
07:35 - 16:25
BFS
-
DUB
8h 50m
1 stop
Multiple Airlines Logo
06:30 - 15:15
DUB
-
BFS
8h 45m
1 stop
£74Multiple Airlines
Tue, 8 Sep - Wed, 16 Sep
Multiple Airlines Logo
07:35 - 16:25
BFS
-
DUB
8h 50m
1 stop
Multiple Airlines Logo
06:30 - 15:15
DUB
-
BFS
8h 45m
1 stop
£75Multiple Airlines
Tue, 8 Sep - Wed, 16 Sep
Multiple Airlines Logo
22:45 - 11:25
BFS
-
DUB
12h 40m
1 stop
Multiple Airlines Logo
22:05 - 12:15
DUB
-
BFS
14h 10m
1 stop
£77Multiple Airlines
Thu, 3 Sep - Mon, 7 Sep
Multiple Airlines Logo
12:45 - 23:55
BFS
-
DUB
11h 10m
1 stop
Multiple Airlines Logo
19:55 - 08:05
DUB
-
BFS
12h 10m
1 stop
£78Multiple Airlines
Thu, 13 Aug - Mon, 17 Aug
Multiple Airlines Logo
07:10 - 17:50
BFS
-
DUB
10h 40m
1 stop
Multiple Airlines Logo
22:20 - 08:50
DUB
-
BFS
10h 30m
1 stop
£79Multiple Airlines
Sun, 6 Sep - Sun, 13 Sep
Multiple Airlines Logo
12:45 - 18:10
BFS
-
DUB
5h 25m
1 stop
Multiple Airlines Logo
20:35 - 10:00
DUB
-
BFS
13h 25m
1 stop
£80Multiple Airlines
Thu, 3 Sep - Mon, 7 Sep
Multiple Airlines Logo
21:40 - 09:10
BFS
-
DUB
11h 30m
1 stop
Multiple Airlines Logo
23:10 - 08:15
DUB
-
BFS
9h 05m
1 stop
£83Multiple Airlines
Sat, 22 Aug - Sun, 23 Aug
Multiple Airlines Logo
15:00 - 22:40
BHD
-
DUB
7h 40m
1 stop
Multiple Airlines Logo
07:55 - 11:55
DUB
-
BHD
4h 00m
1 stop
£102Multiple Airlines
Thu, 3 Sep - Mon, 7 Sep

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

British Airways flights from Belfast to Dublin

Our best British Airways deals on Belfast to Dublin flight tickets
British Airways
2 Oct
BHD19:35Belfast City
12h 05m
1 stop
DUB07:40Dublin
3 Oct
DUB20:15Dublin
13h 50m
1 stop
BHD10:05Belfast City
£166
British Airways
2 Oct
BHD19:35Belfast City
12h 05m
1 stop
DUB07:40Dublin
3 Oct
DUB20:15Dublin
13h 50m
1 stop
BHD10:05Belfast City
£170
British Airways
22 Sept
BHD16:25Belfast City
15h 15m
1 stop
DUB07:40Dublin
26 Sept
DUB20:15Dublin
16h 10m
1 stop
BHD12:25Belfast City
£174

KLM flights from Belfast to Dublin

Our best KLM deals on Belfast to Dublin flight tickets
KLM
18 Sept
BHD09:50Belfast City
12h 35m
1 stop
DUB22:25Dublin
21 Sept
DUB11:10Dublin
5h 45m
1 stop
BHD16:55Belfast City
£384
KLM
3 Sept
BHD17:30Belfast City
4h 55m
1 stop
DUB22:25Dublin
7 Sept
DUB11:10Dublin
5h 45m
1 stop
BHD16:55Belfast City
£518

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 27 July 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 9/9

07:30-20:30

1 stop13h 00m

Dublin

Wed 16/9

06:30-15:15

1 stop8h 45m

£73

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Tue 8/9

07:35-19:50

1 stop12h 15m

Dublin

Tue 15/9

21:20-07:05

1 stop9h 45m

£74

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Tue 8/9

07:35-16:25

1 stop8h 50m

Dublin

Wed 16/9

06:30-15:15

1 stop8h 45m

£74

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Tue 8/9

07:35-16:25

1 stop8h 50m

Dublin

Wed 16/9

06:30-15:15

1 stop8h 45m

£75

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Thu 3/9

22:45-11:25

1 stop12h 40m

Dublin

Mon 7/9

22:05-12:15

1 stop14h 10m

£77

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Thu 13/8

12:45-23:55

1 stop11h 10m

Dublin

Mon 17/8

19:55-08:05

1 stop12h 10m

£78

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Sun 6/9

07:10-17:50

1 stop10h 40m

Dublin

Sun 13/9

22:20-08:50

1 stop10h 30m

£79

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Thu 3/9

12:45-18:10

1 stop5h 25m

Dublin

Mon 7/9

20:35-10:00

1 stop13h 25m

£80

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Sat 22/8

21:40-09:10

1 stop11h 30m

Dublin

Sun 23/8

23:10-08:15

1 stop9h 05m

£83
Fastest return journey

BelfastDublin

BHD - DUB

BHDDUB

Belfast City

Thu 3/9

15:00-22:40

1 stop7h 40m

Dublin

Mon 7/9

07:55-11:55

1 stop4h 00m

£102

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 35m

Direct flights

None
The fastest flight from Belfast to Dublin takes 3h 35m
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. 3h 35m 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 £29Free CancellationRating
6.9
5,445 reviews
Search Ryanair flights
Aer LingusPriceFrom £75Free CancellationRating
7.3
1,682 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
Bray
Drogheda
Mullingar
Kildare
Arklow
Tullamore
Naas
Enniscorthy
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.

An easier way to manage your Dublin trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 26/8
Wed 2/9
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Ireland