Cheap flights from Ireland to Belfast from £44

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ireland to Belfast departing on 9/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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Find the cheapest flights from Ireland to Belfast

Recent return flight deals from Ireland to Belfast

 Logo
08:10 - 21:30DUB-BFS
13h 20m1 stop
 Logo
06:45 - 18:40BFS-DUB
11h 55m1 stop
Mon, 15 Sep - Mon, 22 Sep
 Logo
15:25 - 21:30KIR-BFS
6h 05m1 stop
 Logo
21:55 - 10:30BFS-KIR
12h 35m1 stop
Mon, 15 Sep - Mon, 22 Sep
Aer Lingus Logo
06:30 - 12:50DUB-BHD
6h 20m1 stop
Aer Lingus Logo
15:15 - 21:05BHD-DUB
5h 50m1 stop
£149Aer Lingus
Find Deal
Sat, 6 Sep - Sat, 13 Sep
Aer Lingus Logo
06:30 - 17:20DUB-BHD
10h 50m1 stop
Aer Lingus Logo
10:10 - 21:15BHD-DUB
11h 05m1 stop
£170Aer Lingus
Find Deal
Thu, 21 Aug - Thu, 28 Aug
British Airways Logo
20:10 - 10:10DUB-BHD
14h 00m1 stop
British Airways Logo
20:05 - 07:40BHD-DUB
11h 35m1 stop
£197British Airways
Find Deal
Sat, 27 Sep - Fri, 3 Oct
KLM Logo
13:20 - 21:15DUB-BHD
7h 55m1 stop
KLM Logo
17:25 - 22:25BHD-DUB
5h 00m1 stop
£197KLM
Find Deal
Fri, 5 Sep - Thu, 11 Sep
British Airways Logo
08:30 - 15:20DUB-BHD
6h 50m1 stop
British Airways Logo
20:15 - 07:45BHD-DUB
11h 30m1 stop
£206British Airways
Find Deal
Wed, 3 Sep - Wed, 17 Sep
KLM Logo
06:00 - 21:15ORK-BHD
15h 15m1 stop
KLM Logo
17:25 - 22:25BHD-ORK
5h 00m1 stop
£224KLM
Find Deal
Sat, 20 Sep - Sat, 27 Sep
Loganair Logo
12:20 - 11:30DUB-BHD
23h 10m1 stop
Loganair Logo
12:00 - 17:50BHD-DUB
5h 50m1 stop
£370Loganair
Find Deal
Fri, 5 Sep - Thu, 11 Sep
Loganair Logo
12:20 - 13:30DUB-BHD
25h 10m3 stops
Loganair Logo
12:40 - 09:00BHD-DUB
20h 20m1 stop
£654Loganair
Find Deal
Fri, 29 Aug - Fri, 5 Sep

KLM flights from Ireland to Belfast

Our best KLM deals on Ireland to Belfast flight tickets
KLM
5 Sept
DUB13:20Dublin
7h 55m
1 stop
BHD21:15Belfast City
11 Sept
BHD17:25Belfast City
5h 00m
1 stop
DUB22:25Dublin
KLM
20 Sept
ORK06:00Cork
15h 15m
1 stop
BHD21:15Belfast City
27 Sept
BHD17:25Belfast City
5h 00m
1 stop
ORK22:25Cork
KLM
20 Sept
ORK06:00Cork
15h 15m
1 stop
BHD21:15Belfast City
27 Sept
BHD06:30Belfast City
8h 10m
2 stops
ORK14:40Cork

British Airways flights from Ireland to Belfast

Our best British Airways deals on Ireland to Belfast flight tickets
British Airways
27 Sept
DUB20:10Dublin
14h 00m
1 stop
BHD10:10Belfast City
3 Oct
BHD20:05Belfast City
11h 35m
1 stop
DUB07:40Dublin
British Airways
3 Sept
DUB08:30Dublin
6h 50m
1 stop
BHD15:20Belfast City
17 Sept
BHD20:15Belfast City
11h 30m
1 stop
DUB07:45Dublin
British Airways
9 Sept
DUB10:25Dublin
22h 35m
1 stop
BHD09:00Belfast City
7 Oct
BHD20:20Belfast City
21h 35m
1 stop
DUB17:55Dublin

momondo Fare Finder

 
Customise your flight search to find flights from Ireland to Belfast 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 2 August 2025.
Use the filters below to find and compare flights from Ireland to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Mon 15/9

08:10-21:30

1 stop13h 20m

Belfast Intl

Mon 22/9

06:45-18:40

1 stop11h 55m

£97

Milltown (Kerry)Belfast

KIR - BFS

KIRBFS

Milltown (Kerry) Kerry

Mon 15/9

15:25-21:30

1 stop6h 05m

Belfast Intl

Mon 22/9

21:55-10:30

1 stop12h 35m

£99

DublinBelfast

DUB - BHD

DUBBHD

Dublin

Sat 6/9

06:30-12:50

1 stop6h 20m

Belfast City

Sat 13/9

15:15-21:05

1 stop5h 50m

£149

DublinBelfast

DUB - BHD

DUBBHD

Dublin

Thu 21/8

06:30-17:20

1 stop10h 50m

Belfast City

Thu 28/8

10:10-21:15

1 stop11h 05m

£170

DublinBelfast

DUB - BHD

DUBBHD

Dublin

Sat 27/9

20:10-10:10

1 stop14h 00m

Belfast City

Fri 3/10

20:05-07:40

1 stop11h 35m

£197

DublinBelfast

DUB - BHD

DUBBHD

Dublin

Fri 5/9

13:20-21:15

1 stop7h 55m

Belfast City

Thu 11/9

17:25-22:25

1 stop5h 00m

£197

DublinBelfast

DUB - BHD

DUBBHD

Dublin

Wed 3/9

08:30-15:20

1 stop6h 50m

Belfast City

Wed 17/9

20:15-07:45

1 stop11h 30m

£206

CorkBelfast

ORK - BHD

ORKBHD

Cork

Sat 20/9

06:00-21:15

1 stop15h 15m

Belfast City

Sat 27/9

17:25-22:25

1 stop5h 00m

£224

DublinBelfast

DUB - BHD

DUBBHD

Dublin

Fri 5/9

12:20-11:30

1 stop23h 10m

Belfast City

Thu 11/9

12:00-17:50

1 stop5h 50m

£370

DublinBelfast

DUB - BHD

DUBBHD

Dublin

Fri 29/8

12:20-13:30

3 stops25h 10m

Belfast City

Fri 5/9

12:40-09:00

1 stop20h 20m

£654

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 Belfast from

How to get the cheapest flight ticket from Ireland to Belfast

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 Ireland to Belfast?

Aer Lingus, KLM, and British Airways are the most popular carriers operating from Ireland to Belfast

Cheap Ireland to Belfast flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ireland to Belfast

Best price found

£44

Fastest flight time

3h 15m

Direct flights

None

Airports in Belfast

2 airports
The best one-way flight to Belfast from Ireland in the past 72 hours is £44. The best return flight deal from Ireland to Belfast found on momondo in the last 72 hours is £97.
The fastest flight from Ireland to Belfast takes 3h 15m
There are no direct flights from Ireland to Belfast. Popular non-direct routes for this connection are Dublin Airport - Belfast Intl Airport, Milltown (Kerry) Kerry Airport - Belfast Intl Airport and Dublin Airport - Belfast City Airport.
There are 2 airports near Belfast: Belfast Intl (BFS), Belfast City (BHD)

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

    Prices for flights from Ireland to Belfast are refreshed on a daily basis.

  • How old do you have to be to fly from Ireland to Belfast?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ireland to Belfast.

  • What documentation or ID do you need to fly to Belfast?

    The necessary travel and health documents for your Belfast trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.


Why use momondo?

Why should I use momondo to find a flight deal from Ireland to Belfast?

Finding the right flight to Belfast from Ireland is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Belfast quick and easy, saving you time and money.

Can I find flights from Ireland to Belfast with flexible booking policies on momondo?

Yes. All flights to Belfast from Ireland on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Ireland to Belfast?

momondo provides multiple filters to help you find the best flight to Belfast from Ireland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are not ready to book a flight from Ireland to Belfast now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Belfast and let you know when they change.


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1 adult
Thu 7/8
Thu 14/8

Find better results for your trip to the United Kingdom

Fly into one of these airports located in Belfast

Airports listed have a maximum distance of 12.2 mi from Belfast