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Cheap flights from Northern Ireland to Ireland from €63

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 2/10. 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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Find the cheapest flights from Northern Ireland to Ireland

Cheap return flights

Logo
08:10 - 17:20BFS-DUB
9h 10m1 stop
Logo
07:40 - 13:00DUB-BFS
5h 20m1 stop
€116
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Thu, 18 Sep - Thu, 25 Sep
Logo
07:10 - 12:55BFS-DUB
5h 45m1 stop
Logo
11:30 - 15:30DUB-BFS
4h 00m1 stop
€120
Find Deal
Thu, 18 Sep - Thu, 25 Sep
Logo
06:20 - 22:30BFS-DUB
16h 10m1 stop
Logo
06:30 - 22:20DUB-BFS
15h 50m1 stop
€122
Find Deal
Fri, 17 Oct - Mon, 20 Oct
Logo
21:45 - 08:05BFS-DUB
10h 20m1 stop
Logo
06:30 - 16:40DUB-BFS
10h 10m1 stop
€130
Find Deal
Fri, 19 Sep - Fri, 26 Sep
British Airways Logo
13:15 - 18:00BHD-DUB
4h 45m1 stop
British Airways Logo
10:30 - 17:40DUB-BHD
7h 10m1 stop
€188British Airways
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Thu, 2 Oct - Mon, 6 Oct
British Airways Logo
13:15 - 18:00BHD-DUB
4h 45m1 stop
British Airways Logo
10:30 - 14:40DUB-BHD
4h 10m1 stop
€189British Airways
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Thu, 2 Oct - Mon, 6 Oct
Aer Lingus Logo
10:20 - 14:45BHD-DUB
4h 25m1 stop
Aer Lingus Logo
07:10 - 21:10DUB-BHD
14h 00m1 stop
€209Aer Lingus
Find Deal
Thu, 2 Oct - Mon, 6 Oct
KLM Logo
06:30 - 12:35BHD-DUB
6h 05m1 stop
KLM Logo
05:55 - 16:55DUB-BHD
11h 00m1 stop
€291KLM
Find Deal
Thu, 2 Oct - Mon, 6 Oct
Aer Lingus Logo
13:25 - 17:55BHD-DUB
4h 30m1 stop
Aer Lingus Logo
06:30 - 12:50DUB-BHD
6h 20m1 stop
€295Aer Lingus
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Thu, 4 Sep - Wed, 10 Sep
KLM Logo
17:25 - 14:40BHD-ORK
21h 15m2 stops
KLM Logo
06:00 - 21:15ORK-BHD
15h 15m1 stop
€295KLM
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Mon, 13 Oct - Sun, 19 Oct

British Airways flights from Northern Ireland to Ireland

Our best British Airways deals on Northern Ireland to Ireland flight tickets
British Airways
2 Oct
BHD13:15Belfast City
4h 45m
1 stop
DUB18:00Dublin
6 Oct
DUB10:30Dublin
7h 10m
1 stop
BHD17:40Belfast City
€188
Find similar
British Airways
2 Oct
BHD13:15Belfast City
4h 45m
1 stop
DUB18:00Dublin
6 Oct
DUB10:30Dublin
4h 10m
1 stop
BHD14:40Belfast City
€189
Find similar
British Airways
2 Oct
LDY18:05Londonderry Eglinton
13h 40m
1 stop
DUB07:45Dublin
8 Oct
DUB10:55Dublin
6h 45m
1 stop
LDY17:40Londonderry Eglinton
€265
Find similar

Aer Lingus flights from Northern Ireland to Ireland

Our best Aer Lingus deals on Northern Ireland to Ireland flight tickets
Aer Lingus
2 Oct
BHD10:20Belfast City
4h 25m
1 stop
DUB14:45Dublin
6 Oct
DUB07:10Dublin
14h 00m
1 stop
BHD21:10Belfast City
€209
Find similar
Aer Lingus
24 Aug
BHD07:00Belfast City
26h 10m
1 stop
DUB09:10Dublin
30 Aug
DUB18:25Dublin
20h 05m
1 stop
BHD14:30Belfast City
€247
Find similar
Aer Lingus
4 Sept
BHD13:25Belfast City
4h 30m
1 stop
DUB17:55Dublin
10 Sept
DUB06:30Dublin
6h 20m
1 stop
BHD12:50Belfast City
€295
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 August 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

Thu 18/9

08:10-17:20

1 stop9h 10m

Dublin

Thu 25/9

07:40-13:00

1 stop5h 20m

€116

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Thu 18/9

07:10-12:55

1 stop5h 45m

Dublin

Thu 25/9

11:30-15:30

1 stop4h 00m

€120

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Fri 17/10

06:20-22:30

1 stop16h 10m

Dublin

Mon 20/10

06:30-22:20

1 stop15h 50m

€122

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Fri 19/9

21:45-08:05

1 stop10h 20m

Dublin

Fri 26/9

06:30-16:40

1 stop10h 10m

€130

BelfastDublin

BHD - DUB

BHDDUB

Belfast City

Thu 2/10

13:15-18:00

1 stop4h 45m

Dublin

Mon 6/10

10:30-17:40

1 stop7h 10m

€188

BelfastDublin

BHD - DUB

BHDDUB

Belfast City

Thu 2/10

13:15-18:00

1 stop4h 45m

Dublin

Mon 6/10

10:30-14:40

1 stop4h 10m

€189

BelfastDublin

BHD - DUB

BHDDUB

Belfast City

Thu 2/10

10:20-14:45

1 stop4h 25m

Dublin

Mon 6/10

07:10-21:10

1 stop14h 00m

€209

BelfastDublin

BHD - DUB

BHDDUB

Belfast City

Thu 2/10

06:30-12:35

1 stop6h 05m

Dublin

Mon 6/10

05:55-16:55

1 stop11h 00m

€291

BelfastDublin

BHD - DUB

BHDDUB

Belfast City

Thu 4/9

13:25-17:55

1 stop4h 30m

Dublin

Wed 10/9

06:30-12:50

1 stop6h 20m

€295

BelfastCork

BHD - ORK

BHDORK

Belfast City

Mon 13/10

17:25-14:40

2 stops21h 15m

Cork

Sun 19/10

06:00-21:15

1 stop15h 15m

€295

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?

Ryanair and British Airways 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

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 €39
Flights to Corkfrom €112
Flights to Shannon, Clarefrom €115
Flights to Donegalfrom €65
Flights to Milltown (Kerry)from €40