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Cheap flights from Northern Ireland to Ireland 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 Northern Ireland to Ireland departing on 24/4. 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 Northern Ireland to Ireland

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
19:20 - 01:00
BFS
-
DUB
5h 40m
1 stop
Multiple Airlines Logo
22:05 - 12:20
DUB
-
BFS
14h 15m
1 stop
£75Multiple Airlines
Fri, 17 Apr - Mon, 20 Apr
Multiple Airlines Logo
18:20 - 07:50
BFS
-
DUB
13h 30m
1 stop
Multiple Airlines Logo
06:15 - 19:15
DUB
-
BFS
13h 00m
1 stop
£76Multiple Airlines
Thu, 16 Apr - Thu, 23 Apr
Multiple Airlines Logo
09:40 - 01:00
BFS
-
DUB
15h 20m
1 stop
Multiple Airlines Logo
22:05 - 12:20
DUB
-
BFS
14h 15m
1 stop
£76Multiple Airlines
Fri, 17 Apr - Mon, 20 Apr
Multiple Airlines Logo
07:30 - 12:30
BFS
-
DUB
5h 00m
1 stop
Multiple Airlines Logo
16:15 - 23:20
DUB
-
BFS
7h 05m
1 stop
£78Multiple Airlines
Wed, 15 Apr - Wed, 22 Apr
Multiple Airlines Logo
15:40 - 23:55
BFS
-
ORK
8h 15m
1 stop
Multiple Airlines Logo
17:15 - 23:20
ORK
-
BFS
6h 05m
1 stop
£78Multiple Airlines
Wed, 15 Apr - Wed, 22 Apr
Multiple Airlines Logo
22:00 - 07:45
BFS
-
SNN
9h 45m
1 stop
Multiple Airlines Logo
07:30 - 11:55
SNN
-
BFS
4h 25m
1 stop
£80Multiple Airlines
Sun, 19 Apr - Sun, 26 Apr
Multiple Airlines Logo
16:40 - 21:00
BFS
-
ORK
4h 20m
1 stop
Multiple Airlines Logo
22:25 - 07:05
ORK
-
BFS
8h 40m
1 stop
£80Multiple Airlines
Tue, 14 Apr - Tue, 21 Apr
Multiple Airlines Logo
10:45 - 00:10
BFS
-
DUB
13h 25m
1 stop
Multiple Airlines Logo
06:30 - 12:20
DUB
-
BFS
5h 50m
1 stop
£81Multiple Airlines
Tue, 14 Apr - Tue, 21 Apr
Multiple Airlines Logo
16:40 - 21:35
BFS
-
SNN
4h 55m
1 stop
Multiple Airlines Logo
08:00 - 12:20
SNN
-
BFS
4h 20m
1 stop
£81Multiple Airlines
Tue, 14 Apr - Tue, 21 Apr
Multiple Airlines Logo
09:15 - 17:30
BFS
-
DUB
8h 15m
1 stop
Multiple Airlines Logo
21:20 - 07:05
DUB
-
BFS
9h 45m
1 stop
£82Multiple Airlines
Tue, 31 Mar - Tue, 7 Apr

British Airways flights from Northern Ireland to Ireland

Our best British Airways deals on Northern Ireland to Ireland flight tickets
British Airways
16 Apr
BHD06:30Belfast City
11h 30m
1 stop
DUB18:00Dublin
20 Apr
DUB20:30Dublin
12h 20m
1 stop
BHD08:50Belfast City
£177
British Airways
17 Apr
BHD20:10Belfast City
11h 30m
1 stop
DUB07:40Dublin
20 Apr
DUB20:30Dublin
11h 05m
1 stop
BHD07:35Belfast City
£177
British Airways
2 Jun
BHD13:45Belfast City
5h 50m
1 stop
DUB19:35Dublin
3 Jun
DUB20:30Dublin
12h 20m
1 stop
BHD08:50Belfast City
£178

KLM flights from Northern Ireland to Ireland

Our best KLM deals on Northern Ireland to Ireland flight tickets
KLM
17 Apr
BHD17:30Belfast City
14h 50m
1 stop
DUB08:20Dublin
20 Apr
DUB13:25Dublin
19h 55m
1 stop
BHD09:20Belfast City
£281
KLM
18 Apr
LDY06:30Londonderry Eglinton
15h 55m
2 stops
DUB22:25Dublin
25 Apr
DUB11:10Dublin
25h 40m
2 stops
LDY12:50Londonderry Eglinton
£331
KLM
9 Apr
LDY06:30Londonderry Eglinton
15h 55m
2 stops
DUB22:25Dublin
15 Apr
DUB08:55Dublin
8h 45m
2 stops
LDY17:40Londonderry Eglinton
£383

momondo Fare Finder

 
Customise your flight search to find flights from Northern Ireland to Ireland 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 5 March 2026.
Use the filters below to find and compare flights from Northern Ireland to Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Fri 17/4

19:20-01:00

1 stop5h 40m

Dublin

Mon 20/4

22:05-12:20

1 stop14h 15m

£75

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Thu 16/4

18:20-07:50

1 stop13h 30m

Dublin

Thu 23/4

06:15-19:15

1 stop13h 00m

£76

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Fri 17/4

09:40-01:00

1 stop15h 20m

Dublin

Mon 20/4

22:05-12:20

1 stop14h 15m

£76

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Wed 15/4

07:30-12:30

1 stop5h 00m

Dublin

Wed 22/4

16:15-23:20

1 stop7h 05m

£78

BelfastCork

BFS - ORK

BFSORK

Belfast Intl

Wed 15/4

15:40-23:55

1 stop8h 15m

Cork

Wed 22/4

17:15-23:20

1 stop6h 05m

£78

BelfastShannon

BFS - SNN

BFSSNN

Belfast Intl

Sun 19/4

22:00-07:45

1 stop9h 45m

Shannon

Sun 26/4

07:30-11:55

1 stop4h 25m

£80

BelfastCork

BFS - ORK

BFSORK

Belfast Intl

Tue 14/4

16:40-21:00

1 stop4h 20m

Cork

Tue 21/4

22:25-07:05

1 stop8h 40m

£80

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Tue 14/4

10:45-00:10

1 stop13h 25m

Dublin

Tue 21/4

06:30-12:20

1 stop5h 50m

£81
Fastest return journey

BelfastShannon

BFS - SNN

BFSSNN

Belfast Intl

Tue 14/4

16:40-21:35

1 stop4h 55m

Shannon

Tue 21/4

08:00-12:20

1 stop4h 20m

£81

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Tue 31/3

09:15-17:30

1 stop8h 15m

Dublin

Tue 7/4

21:20-07:05

1 stop9h 45m

£82

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 Ireland from

How to get the cheapest flight ticket from Northern Ireland to Ireland

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 Northern Ireland to Ireland?

British Airways and Aer Lingus are the most popular carriers operating from Northern Ireland to Ireland

Cheap Northern Ireland to Ireland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Northern Ireland to Ireland

Fastest flight time

3h 45m

Direct flights

None
The fastest flight from Northern Ireland to Ireland takes 3h 45m
There are no direct flights from Northern Ireland to Ireland. There are no popular flight routes from Northern Ireland to Ireland.
Search flight deals

  • When did momondo last update prices for flights from Northern Ireland to Ireland?

    Prices for flights from Northern Ireland to Ireland were last updated today.

  • How old do you have to be to fly from Northern Ireland to Ireland?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Northern Ireland to Ireland.

  • What documentation or ID do you need to fly to Ireland?

    The required travel and health documents for your Ireland trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ireland. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Northern Ireland to Ireland?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Northern Ireland to Ireland . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Northern Ireland to Ireland with flexible booking policies on momondo?

Yes. All flights to Ireland from Northern Ireland on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Northern Ireland to Ireland?

momondo provides multiple filters to help you find the best flight to Ireland from Northern Ireland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to Ireland from Northern Ireland are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Find better results for your trip to Ireland

Popular Cities in Ireland

Popular flights according to clicks in the last 7 days on momondo
Flights to Dublinfrom £28
Flights to Corkfrom £29
Flights to Shannon, Clarefrom £28
Flights to Knockfrom £28
Flights to Milltown (Kerry)from £31
Flights to Donegalfrom £119