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Cheap flights from Northern Ireland to Ireland from €41

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 8/9. 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

Find the cheapest flights from Northern Ireland to Ireland

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
15:40 - 20:30BFS  Belfast Intl-DUB Dublin
4h 50m1 stop Manchester
Multiple Airlines Logo
06:30 - 15:15DUB  Dublin-BFS Belfast Intl
8h 45m1 stop Manchester
€82Multiple Airlines
Wed, 16 Sep - Wed, 23 Sep
Multiple Airlines Logo
16:00 - 21:30LDY  Londonderry Eglinton-DUB Dublin
5h 30m1 stop Manchester
Multiple Airlines Logo
06:20 - 14:30DUB  Dublin-LDY Londonderry Eglinton
8h 10m1 stop Manchester
€83Multiple Airlines
Wed, 9 Sep - Mon, 21 Sep
Multiple Airlines Logo
16:00 - 20:30LDY  Londonderry Eglinton-DUB Dublin
4h 30m1 stop Manchester
Multiple Airlines Logo
10:55 - 17:00DUB  Dublin-LDY Londonderry Eglinton
6h 05m1 stop Manchester
€85Multiple Airlines
Wed, 2 Sep - Sun, 6 Sep
Multiple Airlines Logo
15:40 - 21:30BFS  Belfast Intl-DUB Dublin
5h 50m1 stop Manchester
Multiple Airlines Logo
22:05 - 12:15DUB  Dublin-BFS Belfast Intl
14h 10m1 stop London Stansted
€85Multiple Airlines
Wed, 2 Sep - Mon, 7 Sep
Multiple Airlines Logo
16:00 - 21:30LDY  Londonderry Eglinton-DUB Dublin
5h 30m1 stop Manchester
Multiple Airlines Logo
06:20 - 14:30DUB  Dublin-LDY Londonderry Eglinton
8h 10m1 stop Manchester
€86Multiple Airlines
Wed, 9 Sep - Mon, 21 Sep
Multiple Airlines Logo
15:40 - 23:55BFS  Belfast Intl-ORK Cork
8h 15m1 stop Manchester
Multiple Airlines Logo
22:25 - 07:05ORK  Cork-BFS Belfast Intl
8h 40m1 stop Manchester
€86Multiple Airlines
Wed, 23 Sep - Tue, 29 Sep
Multiple Airlines Logo
15:40 - 21:30BFS  Belfast Intl-DUB Dublin
5h 50m1 stop Manchester
Multiple Airlines Logo
14:40 - 21:30DUB  Dublin-BFS Belfast Intl
6h 50m1 stop Manchester
€86Multiple Airlines
Wed, 2 Sep - Mon, 7 Sep
Multiple Airlines Logo
07:30 - 11:50BFS  Belfast Intl-SNN Shannon
4h 20m1 stop Manchester
Multiple Airlines Logo
08:50 - 15:15SNN  Shannon-BFS Belfast Intl
6h 25m1 stop Manchester
€86Multiple Airlines
Wed, 30 Sep - Wed, 7 Oct
Multiple Airlines Logo
21:40 - 23:25BFS  Belfast Intl-DUB Dublin
25h 45m1 stop Manchester
Multiple Airlines Logo
06:30 - 14:15DUB  Dublin-BFS Belfast Intl
7h 45m1 stop London Stansted
€86Multiple Airlines
Sat, 26 Sep - Sat, 3 Oct
Multiple Airlines Logo
14:50 - 20:30BFS  Belfast Intl-SNN Shannon
5h 40m1 stop London Stansted
Multiple Airlines Logo
17:00 - 23:00SNN  Shannon-BFS Belfast Intl
6h 00m1 stop London Stansted
€86Multiple Airlines
Thu, 24 Sep - Fri, 25 Sep

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British Airways flights from Northern Ireland to Ireland

Our best British Airways deals on Northern Ireland to Ireland flight tickets
British Airways
12 Oct
BHD06:30Belfast City
13h 05m
1 stop
DUB19:35Dublin
15 Oct
DUB13:45Dublin
6h 50m
1 stop
BHD20:35Belfast City
€198
British Airways
1 Oct
BHD12:45Belfast City
5h 15m
1 stop
DUB18:00Dublin
5 Oct
DUB20:30Dublin
12h 20m
1 stop
BHD08:50Belfast City
€199
British Airways
1 Oct
BHD12:45Belfast City
5h 15m
1 stop
DUB18:00Dublin
5 Oct
DUB20:30Dublin
12h 20m
1 stop
BHD08:50Belfast City
€200

KLM flights from Northern Ireland to Ireland

Our best KLM deals on Northern Ireland to Ireland flight tickets
KLM
3 Oct
BHD17:30Belfast City
5h 05m
1 stop
ORK22:35Cork
10 Oct
ORK10:50Cork
6h 05m
1 stop
BHD16:55Belfast City
€321
KLM
26 Sept
BHD17:30Belfast City
16h 50m
1 stop
ORK10:20Cork
3 Oct
ORK17:10Cork
16h 05m
1 stop
BHD09:15Belfast City
€354
KLM
31 Oct
LDY06:30Londonderry Eglinton
9h 50m
2 stops
DUB16:20Dublin
1 Nov
DUB08:55Dublin
12h 45m
2 stops
LDY21:40Londonderry Eglinton
€361

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 13,528 searches. Data last updated 16 August 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 Belfast Intl - DUB Dublin

BFSDUB

Belfast Intl

Wed 16/9

15:40-20:30

1 stop4h 50m

Dublin

Wed 23/9

06:30-15:15

1 stop8h 45m

€82

LondonderryDublin

LDY Londonderry Eglinton - DUB Dublin

LDYDUB

Londonderry Eglinton

Wed 9/9

16:00-21:30

1 stop5h 30m

Dublin

Mon 21/9

06:20-14:30

1 stop8h 10m

€83
Fastest return journey

LondonderryDublin

LDY Londonderry Eglinton - DUB Dublin

LDYDUB

Londonderry Eglinton

Wed 2/9

16:00-20:30

1 stop4h 30m

Dublin

Sun 6/9

10:55-17:00

1 stop6h 05m

€85

BelfastDublin

BFS Belfast Intl - DUB Dublin

BFSDUB

Belfast Intl

Wed 2/9

15:40-21:30

1 stop5h 50m

Dublin

Mon 7/9

22:05-12:15

1 stop14h 10m

€85

LondonderryDublin

LDY Londonderry Eglinton - DUB Dublin

LDYDUB

Londonderry Eglinton

Wed 9/9

16:00-21:30

1 stop5h 30m

Dublin

Mon 21/9

06:20-14:30

1 stop8h 10m

€86

BelfastCork

BFS Belfast Intl - ORK Cork

BFSORK

Belfast Intl

Wed 23/9

15:40-23:55

1 stop8h 15m

Cork

Tue 29/9

22:25-07:05

1 stop8h 40m

€86

BelfastDublin

BFS Belfast Intl - DUB Dublin

BFSDUB

Belfast Intl

Wed 2/9

15:40-21:30

1 stop5h 50m

Dublin

Mon 7/9

14:40-21:30

1 stop6h 50m

€86

BelfastShannon

BFS Belfast Intl - SNN Shannon

BFSSNN

Belfast Intl

Wed 30/9

07:30-11:50

1 stop4h 20m

Shannon

Wed 7/10

08:50-15:15

1 stop6h 25m

€86

BelfastDublin

BFS Belfast Intl - DUB Dublin

BFSDUB

Belfast Intl

Sat 26/9

21:40-23:25

1 stop25h 45m

Dublin

Sat 3/10

06:30-14:15

1 stop7h 45m

€86

BelfastShannon

BFS Belfast Intl - SNN Shannon

BFSSNN

Belfast Intl

Thu 24/9

14:50-20:30

1 stop5h 40m

Shannon

Fri 25/9

17:00-23:00

1 stop6h 00m

€86

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 is the most popular carrier 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

4h 05m

Direct flights

None
The fastest flight from Northern Ireland to Ireland takes 4h 05m
There are no direct flights from Northern Ireland to Ireland. There are no popular flight routes from Northern Ireland to Ireland.
Search flight deals

Frequently asked questions about flying from Northern Ireland to Ireland

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

    Prices for flights from Northern Ireland to Ireland are updated daily.

  • 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 stopovers. 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 licence 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?

It is quick and easy to find Northern Ireland to Ireland 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 Ireland that suits you.

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?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ireland from Northern Ireland.

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

If you are simply researching potential flights to Ireland, momondo offers a useful price alert feature which will track prices for flights to Ireland from Northern Ireland and alert you when they change.

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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 €38
Flights to Corkfrom €77
Flights to Shannon, Clarefrom €83
Flights to Milltown (Kerry)from €36
Flights to Donegalfrom €75