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Cheap flights from Northern Ireland to Ireland from €49

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 11/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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
07:50 - 18:20BFS-DUB
10h 30m1 stop
Multiple Airlines Logo
20:55 - 08:55DUB-BFS
12h 00m1 stop
€89Multiple Airlines
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Mon, 5 Jan - Mon, 12 Jan
Multiple Airlines Logo
07:50 - 14:55BFS-DUB
7h 05m1 stop
Multiple Airlines Logo
22:55 - 08:55DUB-BFS
10h 00m1 stop
€95Multiple Airlines
Find Deal
Mon, 5 Jan - Mon, 12 Jan
Multiple Airlines Logo
06:00 - 17:50BFS-DUB
11h 50m1 stop
Multiple Airlines Logo
21:40 - 09:05DUB-BFS
11h 25m1 stop
€96Multiple Airlines
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Thu, 15 Jan - Mon, 19 Jan
Multiple Airlines Logo
07:55 - 13:25BFS-DUB
5h 30m1 stop
Multiple Airlines Logo
13:00 - 18:50DUB-BFS
5h 50m1 stop
€99Multiple Airlines
Find Deal
Wed, 7 Jan - Wed, 14 Jan
British Airways Logo
09:05 - 17:00BHD-DUB
7h 55m1 stop
British Airways Logo
10:45 - 18:40DUB-BHD
7h 55m1 stop
€184British Airways
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Thu, 15 Jan - Mon, 19 Jan
British Airways Logo
14:00 - 19:40LDY-DUB
5h 40m1 stop
British Airways Logo
13:10 - 17:35DUB-LDY
4h 25m1 stop
€260British Airways
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Wed, 7 Jan - Wed, 14 Jan
British Airways Logo
20:00 - 07:55BHD-DUB
11h 55m1 stop
British Airways Logo
20:40 - 07:40DUB-BHD
11h 00m1 stop
€262British Airways
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Thu, 11 Dec - Mon, 15 Dec
KLM Logo
17:20 - 15:00BHD-ORK
21h 40m2 stops
KLM Logo
15:40 - 16:50ORK-BHD
25h 10m2 stops
€374KLM
Find Deal
Fri, 16 Jan - Sun, 18 Jan
KLM Logo
17:20 - 15:00BHD-ORK
21h 40m2 stops
KLM Logo
15:40 - 16:50ORK-BHD
25h 10m2 stops
€375KLM
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Fri, 16 Jan - Sun, 18 Jan
KLM Logo
17:20 - 16:45BHD-ORK
23h 25m1 stop
KLM Logo
15:40 - 16:50ORK-BHD
25h 10m2 stops
€380KLM
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Fri, 16 Jan - Sun, 18 Jan

British Airways flights from Northern Ireland to Ireland

Our best British Airways deals on Northern Ireland to Ireland flight tickets
British Airways
15 Jan
BHD09:05Belfast City
7h 55m
1 stop
DUB17:00Dublin
19 Jan
DUB10:45Dublin
7h 55m
1 stop
BHD18:40Belfast City
€184
Find similar
British Airways
29 Nov
BHD06:35Belfast City
10h 25m
1 stop
DUB17:00Dublin
1 Dec
DUB15:10Dublin
5h 05m
1 stop
BHD20:15Belfast City
€241
Find similar
British Airways
29 Nov
BHD06:35Belfast City
13h 15m
1 stop
DUB19:50Dublin
1 Dec
DUB15:10Dublin
5h 05m
1 stop
BHD20:15Belfast City
€259
Find similar

KLM flights from Northern Ireland to Ireland

Our best KLM deals on Northern Ireland to Ireland flight tickets
KLM
7 Jan
LDY18:05Londonderry Eglinton
22h 15m
2 stops
DUB16:20Dublin
14 Jan
DUB08:50Dublin
8h 45m
2 stops
LDY17:35Londonderry Eglinton
€328
Find similar
KLM
16 Jan
BHD17:20Belfast City
21h 40m
2 stops
ORK15:00Cork
18 Jan
ORK15:40Cork
25h 10m
2 stops
BHD16:50Belfast City
€374
Find similar
KLM
16 Jan
BHD17:20Belfast City
21h 40m
2 stops
ORK15:00Cork
18 Jan
ORK15:40Cork
25h 10m
2 stops
BHD16:50Belfast City
€375
Find similar

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 23 November 2025.
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

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Mon 5/1

07:50-18:20

1 stop10h 30m

Dublin

Mon 12/1

20:55-08:55

1 stop12h 00m

€89

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Mon 5/1

07:50-14:55

1 stop7h 05m

Dublin

Mon 12/1

22:55-08:55

1 stop10h 00m

€95

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Thu 15/1

06:00-17:50

1 stop11h 50m

Dublin

Mon 19/1

21:40-09:05

1 stop11h 25m

€96

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Wed 7/1

07:55-13:25

1 stop5h 30m

Dublin

Wed 14/1

13:00-18:50

1 stop5h 50m

€99

BelfastDublin

BHD - DUB

BHDDUB

Belfast City

Thu 15/1

09:05-17:00

1 stop7h 55m

Dublin

Mon 19/1

10:45-18:40

1 stop7h 55m

€184

LondonderryDublin

LDY - DUB

LDYDUB

Londonderry Eglinton

Wed 7/1

14:00-19:40

1 stop5h 40m

Dublin

Wed 14/1

13:10-17:35

1 stop4h 25m

€260

BelfastDublin

BHD - DUB

BHDDUB

Belfast City

Thu 11/12

20:00-07:55

1 stop11h 55m

Dublin

Mon 15/12

20:40-07:40

1 stop11h 00m

€262

BelfastCork

BHD - ORK

BHDORK

Belfast City

Fri 16/1

17:20-15:00

2 stops21h 40m

Cork

Sun 18/1

15:40-16:50

2 stops25h 10m

€374

BelfastCork

BHD - ORK

BHDORK

Belfast City

Fri 16/1

17:20-15:00

2 stops21h 40m

Cork

Sun 18/1

15:40-16:50

2 stops25h 10m

€375

BelfastCork

BHD - ORK

BHDORK

Belfast City

Fri 16/1

17:20-16:45

1 stop23h 25m

Cork

Sun 18/1

15:40-16:50

2 stops25h 10m

€380

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

How long is the flight from Northern Ireland to Ireland?

On average, it takes 6h to fly from Northern Ireland to Ireland if you fly out of Belfast (the most popular airport in Northern Ireland) and into Dublin (the most popular airport in Ireland). If you’re flying out of Londonderry and into Dublin, then the flight time is around 9h 55m.

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

Direct flights

None
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 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 €90
Flights to Shannon, Clarefrom €88
Flights to Donegalfrom €103
Flights to Milltown (Kerry)from €39