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Cheap flights from Northern Ireland to Ireland from £40

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/6. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — DUB
22 Apr — 29 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Northern Ireland to Ireland

Enter your travel dates to find the best prices.

Cheapest flights from Northern Ireland to Ireland
Explore the most affordable flight options available from Northern Ireland to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 March 2026.

Thu 14/512:45
BFS
-
DUB
1 stop7h 45m
Multiple Airlines
Mon 18/522:05
DUB
-
BFS
1 stop14h 10m
Multiple Airlines
Deal found 21/3£76
Fri 8/519:20
BFS
-
DUB
1 stop5h 40m
Multiple Airlines
Mon 11/515:40
DUB
-
BFS
1 stop18h 20m
Multiple Airlines
Deal found 18/3£76
Thu 16/412:45
BFS
-
DUB
1 stop7h 45m
Multiple Airlines
Thu 23/410:20
DUB
-
BFS
1 stop5h 00m
Multiple Airlines
Deal found 19/3£77
Wed 6/516:00
LDY
-
DUB
1 stop4h 45m
Multiple Airlines
Wed 13/510:05
DUB
-
LDY
1 stop5h 30m
Multiple Airlines
Deal found 22/3£77
Wed 6/515:40
BFS
-
ORK
1 stop8h 15m
Multiple Airlines
Wed 13/509:55
ORK
-
BFS
1 stop5h 20m
Multiple Airlines
Deal found 22/3£77
Fri 12/619:55
BFS
-
SNN
1 stop13h 35m
Multiple Airlines
Mon 15/608:10
SNN
-
BFS
1 stop13h 20m
Multiple Airlines
Deal found 18/3£79
Sat 2/516:55
BFS
-
DUB
1 stop6h 10m
Multiple Airlines
Sat 9/506:45
DUB
-
BFS
1 stop9h 45m
Multiple Airlines
Deal found 18/3£79
Mon 20/409:15
BFS
-
ORK
1 stop5h 00m
Multiple Airlines
Mon 27/405:55
ORK
-
BFS
1 stop12h 30m
Multiple Airlines
Deal found 20/3£79
Fri 29/519:20
BFS
-
ORK
1 stop13h 05m
Multiple Airlines
Sun 31/509:00
ORK
-
BFS
1 stop11h 40m
Multiple Airlines
Deal found 21/3£80
Thu 7/506:40
BFS
-
DUB
1 stop13h 50m
Multiple Airlines
Mon 11/519:55
DUB
-
BFS
1 stop12h 10m
Multiple Airlines
Deal found 18/3£81
Fri 17/408:55
BFS
-
DUB
1 stop7h 05m
Multiple Airlines
Fri 24/414:00
DUB
-
BFS
1 stop4h 55m
Multiple Airlines
Deal found 20/3£82
Thu 7/512:45
BFS
-
DUB
1 stop5h 25m
Multiple Airlines
Thu 14/515:45
DUB
-
BFS
1 stop6h 35m
Multiple Airlines
Deal found 22/3£84

Find flight deals from Northern Ireland to Ireland

Keep the following information in mind while searching for Northern Ireland to Ireland flight deals. Data was last updated 23 March 2026.

Round-trip from

£76

One-way from

£40
14/5-18/5
  • 14/5-18/5
  • 2 total stops
  • 21h 55m total
  • Northern Ireland to Ireland
Search Deals
23/6
  • 23/6
  • 1 total stop
  • 8h 50m total
  • Northern Ireland to Ireland
Search Deals

Cheapflights 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, Cheapflights users made 858,174 searches. Data last updated 23 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

Thu 14/5

12:45-20:30

1 stop7h 45m

Dublin

Mon 18/5

22:05-12:15

1 stop14h 10m

£76

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Thu 16/4

12:45-20:30

1 stop7h 45m

Dublin

Thu 23/4

10:20-15:20

1 stop5h 00m

£77

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Wed 6/5

15:40-20:45

1 stop5h 05m

Dublin

Wed 13/5

10:50-19:50

1 stop9h 00m

£77

BelfastCork

BFS - ORK

BFSORK

Belfast Intl

Wed 6/5

15:40-23:55

1 stop8h 15m

Cork

Wed 13/5

09:55-15:15

1 stop5h 20m

£77

BelfastShannon

BFS - SNN

BFSSNN

Belfast Intl

Fri 12/6

19:55-09:30

1 stop13h 35m

Shannon

Mon 15/6

08:10-21:30

1 stop13h 20m

£79

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Sat 2/5

16:55-23:05

1 stop6h 10m

Dublin

Sat 9/5

06:45-16:30

1 stop9h 45m

£79

BelfastCork

BFS - ORK

BFSORK

Belfast Intl

Fri 29/5

19:20-08:25

1 stop13h 05m

Cork

Sun 31/5

09:00-20:40

1 stop11h 40m

£80

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Thu 7/5

12:45-18:10

1 stop5h 25m

Dublin

Thu 14/5

15:45-22:20

1 stop6h 35m

£84

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Fri 17/4

08:55-21:10

1 stop12h 15m

Dublin

Fri 24/4

22:10-10:45

1 stop12h 35m

£85

BelfastCork

BFS - ORK

BFSORK

Belfast Intl

Thu 7/5

06:40-12:55

1 stop6h 15m

Cork

Thu 14/5

09:50-19:15

1 stop9h 25m

£86

Flights are sorted by cheapest return flights first.

Deals found on 19/3

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Northern Ireland to Ireland

Have a flexible travel schedule? Discover the best time to fly to Ireland from Northern Ireland with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Northern Ireland to Ireland
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Northern Ireland to Ireland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Northern Ireland to Ireland that include hotel bookings?

    Yes. In addition to deals on Northern Ireland to Ireland flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Northern Ireland to Ireland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Northern Ireland to Ireland.

  • Can I find deals for business class flights from Northern Ireland to Ireland?

    Yes. Cheapflights offers flight deals from Northern Ireland to Ireland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Browse thousands of different options on Cheapflights for your next trip

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Fly with Cheapflights

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How does Cheapflights help users find flights from Northern Ireland to Ireland?

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Can Cheapflights find flights from Northern Ireland to Ireland with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Northern Ireland to Ireland, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Northern Ireland to Ireland become cheaper?

Yes, Cheapflights offers price alerts on Northern Ireland to Ireland flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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