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Cheap flights from Northern Ireland to Ireland from £56

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 9/10. 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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0 bags
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Find the cheapest flights from Northern Ireland to Ireland

Cheap return flights

Logo
22:20 - 10:00BFS-DUB
11h 40m1 stop
Logo
07:25 - 15:30DUB-BFS
8h 05m1 stop
£105
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Mon, 20 Oct - Thu, 23 Oct
Logo
22:45 - 10:00BFS-DUB
11h 15m1 stop
Logo
06:30 - 15:30DUB-BFS
9h 00m1 stop
£106
Find Deal
Mon, 20 Oct - Thu, 23 Oct
Ryanair Logo
08:35 - 22:25BFS-ORK
13h 50m1 stop
Ryanair Logo
22:50 - 06:50ORK-BFS
8h 00m1 stop
£118Ryanair
Find Deal
Sat, 11 Oct - Sat, 18 Oct
Ryanair Logo
08:35 - 22:25BFS-ORK
13h 50m1 stop
Ryanair Logo
22:50 - 06:50ORK-BFS
8h 00m1 stop
£120Ryanair
Find Deal
Sat, 27 Sep - Sat, 4 Oct
British Airways Logo
13:15 - 18:00BHD-DUB
4h 45m1 stop
British Airways Logo
11:05 - 17:40DUB-BHD
6h 35m1 stop
£163British Airways
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Thu, 2 Oct - Mon, 6 Oct
British Airways Logo
14:00 - 19:35LDY-DUB
5h 35m1 stop
British Airways Logo
10:30 - 17:40DUB-LDY
7h 10m1 stop
£228British Airways
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Tue, 7 Oct - Tue, 14 Oct
Aer Lingus Logo
06:45 - 18:40BHD-DUB
11h 55m1 stop
Aer Lingus Logo
14:25 - 20:50DUB-BHD
6h 25m1 stop
£239Aer Lingus
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
£254Aer Lingus
Find Deal
Thu, 4 Sep - Wed, 10 Sep
KLM Logo
17:25 - 22:25BHD-ORK
5h 00m1 stop
KLM Logo
17:10 - 16:55ORK-BHD
23h 45m1 stop
£283KLM
Find Deal
Sat, 27 Sep - Sat, 4 Oct
KLM Logo
06:30 - 14:40BHD-ORK
8h 10m2 stops
KLM Logo
17:10 - 16:55ORK-BHD
23h 45m1 stop
£326KLM
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Sat, 27 Sep - Sat, 4 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
DUB11:05Dublin
6h 35m
1 stop
BHD17:40Belfast City
£163
Find similar
British Airways
7 Oct
LDY14:00Londonderry Eglinton
5h 35m
1 stop
DUB19:35Dublin
14 Oct
DUB10:30Dublin
7h 10m
1 stop
LDY17:40Londonderry Eglinton
£228
Find similar
British Airways
6 Oct
BHD12:15Belfast City
7h 35m
1 stop
ORK19:50Cork
8 Oct
ORK11:45Cork
7h 40m
1 stop
BHD19:25Belfast City
£280
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
BHD06:45Belfast City
11h 55m
1 stop
DUB18:40Dublin
6 Oct
DUB14:25Dublin
6h 25m
1 stop
BHD20:50Belfast City
£239
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
£254
Find similar
Aer Lingus
29 Aug
BHD15:20Belfast City
6h 25m
1 stop
DUB21:45Dublin
6 Sept
DUB06:30Dublin
6h 25m
1 stop
BHD12:55Belfast City
£290
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 279,928 searches. Data last updated 25 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

Mon 20/10

22:20-10:00

1 stop11h 40m

Dublin

Thu 23/10

07:25-15:30

1 stop8h 05m

£105

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Mon 20/10

22:45-10:00

1 stop11h 15m

Dublin

Thu 23/10

06:30-15:30

1 stop9h 00m

£106

BelfastCork

BFS - ORK

BFSORK

Belfast Intl

Sat 11/10

08:35-22:25

1 stop13h 50m

Cork

Sat 18/10

22:50-06:50

1 stop8h 00m

£118

BelfastCork

BFS - ORK

BFSORK

Belfast Intl

Sat 27/9

08:35-22:25

1 stop13h 50m

Cork

Sat 4/10

22:50-06:50

1 stop8h 00m

£120

BelfastDublin

BHD - DUB

BHDDUB

Belfast City

Thu 2/10

13:15-18:00

1 stop4h 45m

Dublin

Mon 6/10

11:05-17:40

1 stop6h 35m

£163

LondonderryDublin

LDY - DUB

LDYDUB

Londonderry Eglinton

Tue 7/10

14:00-19:35

1 stop5h 35m

Dublin

Tue 14/10

10:30-17:40

1 stop7h 10m

£228

BelfastDublin

BHD - DUB

BHDDUB

Belfast City

Thu 2/10

06:45-18:40

1 stop11h 55m

Dublin

Mon 6/10

14:25-20:50

1 stop6h 25m

£239

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

£254

BelfastCork

BHD - ORK

BHDORK

Belfast City

Sat 27/9

17:25-22:25

1 stop5h 00m

Cork

Sat 4/10

17:10-16:55

1 stop23h 45m

£283

BelfastCork

BHD - ORK

BHDORK

Belfast City

Sat 27/9

06:30-14:40

2 stops8h 10m

Cork

Sat 4/10

17:10-16:55

1 stop23h 45m

£326

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 time of day to depart on your flight to Ireland?

In the afternoon is the cheapest time of day to fly from Northern Ireland to Ireland when you can find flight prices for as low as £136. Flying to Ireland in the afternoon is an ideal time because this is during off-peak travel hours. Flights to Ireland are more costly in the morning, with an average ticket price of £156. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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.
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  • 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 £29
Flights to Corkfrom £32
Flights to Shannon, Clarefrom £30
Flights to Knockfrom £32
Flights to Milltown (Kerry)from £34
Flights to Donegalfrom £118