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Cheap flights from Ireland to Belfast from £39

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 14/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Find the cheapest flights from Ireland to Belfast

Recent return flight deals from Ireland to Belfast

Enter your travel dates to find the best prices.
Multiple Airlines Logo
06:45 - 10:20
DUB
-
BFS
3h 35m
1 stop
Multiple Airlines Logo
07:55 - 13:25
BFS
-
DUB
5h 30m
1 stop
£77Multiple Airlines
Wed, 4 Mar - Wed, 11 Mar
Multiple Airlines Logo
22:20 - 08:50
ORK
-
BFS
10h 30m
1 stop
Multiple Airlines Logo
18:00 - 07:00
BFS
-
ORK
13h 00m
1 stop
£77Multiple Airlines
Fri, 20 Mar - Fri, 27 Mar
Multiple Airlines Logo
16:55 - 06:45
DUB
-
BFS
13h 50m
1 stop
Multiple Airlines Logo
12:45 - 23:15
BFS
-
DUB
10h 30m
1 stop
£78Multiple Airlines
Sat, 21 Mar - Sat, 28 Mar
Multiple Airlines Logo
06:30 - 12:00
DUB
-
BFS
5h 30m
1 stop
Multiple Airlines Logo
15:45 - 23:05
BFS
-
DUB
7h 20m
1 stop
£79Multiple Airlines
Sun, 1 Mar - Wed, 4 Mar
Multiple Airlines Logo
21:35 - 08:20
SNN
-
BFS
10h 45m
1 stop
Multiple Airlines Logo
19:35 - 09:45
BFS
-
SNN
14h 10m
1 stop
£80Multiple Airlines
Sun, 22 Mar - Sun, 29 Mar
Multiple Airlines Logo
06:30 - 17:35
DUB
-
BFS
11h 05m
1 stop
Multiple Airlines Logo
18:00 - 23:05
BFS
-
DUB
5h 05m
1 stop
£80Multiple Airlines
Fri, 20 Mar - Fri, 27 Mar
Multiple Airlines Logo
06:30 - 12:00
DUB
-
BFS
5h 30m
1 stop
Multiple Airlines Logo
07:40 - 16:05
BFS
-
DUB
8h 25m
1 stop
£80Multiple Airlines
Sun, 1 Mar - Wed, 4 Mar
Multiple Airlines Logo
21:15 - 10:20
DUB
-
BFS
13h 05m
1 stop
Multiple Airlines Logo
16:30 - 23:40
BFS
-
DUB
7h 10m
1 stop
£82Multiple Airlines
Tue, 3 Mar - Tue, 10 Mar
Multiple Airlines Logo
22:20 - 08:50
ORK
-
BFS
10h 30m
1 stop
Multiple Airlines Logo
18:00 - 22:45
BFS
-
ORK
4h 45m
1 stop
£86Multiple Airlines
Fri, 20 Mar - Fri, 27 Mar
KLM Logo
11:15 - 21:00
ORK
-
BHD
9h 45m
1 stop
KLM Logo
06:30 - 10:45
BHD
-
ORK
4h 15m
1 stop
£215KLM
Sun, 15 Mar - Sat, 21 Mar

British Airways flights from Ireland to Belfast

Our best British Airways deals on Ireland to Belfast flight tickets
British Airways
5 Mar
DUB20:40Dublin
10h 50m
1 stop
BHD07:30Belfast City
9 Mar
BHD14:40Belfast City
5h 00m
1 stop
DUB19:40Dublin
£223
British Airways
7 Mar
DUB20:40Dublin
12h 30m
1 stop
BHD09:10Belfast City
8 Mar
BHD12:10Belfast City
7h 35m
1 stop
DUB19:45Dublin
£224
British Airways
9 Feb
DUB08:50Dublin
5h 05m
1 stop
BHD13:55Belfast City
15 Feb
BHD09:10Belfast City
5h 05m
1 stop
DUB14:15Dublin
£264

KLM flights from Ireland to Belfast

Our best KLM deals on Ireland to Belfast flight tickets
KLM
27 Feb
DUB13:25Dublin
7h 35m
1 stop
BHD21:00Belfast City
2 Mar
BHD06:30Belfast City
6h 10m
1 stop
DUB12:40Dublin
£174
KLM
26 Feb
DUB13:25Dublin
7h 35m
1 stop
BHD21:00Belfast City
2 Mar
BHD17:20Belfast City
4h 50m
1 stop
DUB22:10Dublin
£186
KLM
7 Mar
DUB05:55Dublin
15h 05m
1 stop
BHD21:00Belfast City
8 Mar
BHD17:20Belfast City
14h 45m
1 stop
DUB08:05Dublin
£203

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 6 February 2026.
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

Wed 4/3

06:45-10:20

1 stop3h 35m

Belfast Intl

Wed 11/3

07:55-13:25

1 stop5h 30m

£77

CorkBelfast

ORK - BFS

ORKBFS

Cork

Fri 20/3

22:20-08:50

1 stop10h 30m

Belfast Intl

Fri 27/3

18:00-07:00

1 stop13h 00m

£77

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Sat 21/3

16:55-06:45

1 stop13h 50m

Belfast Intl

Sat 28/3

12:45-23:15

1 stop10h 30m

£78

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Sun 1/3

06:30-12:00

1 stop5h 30m

Belfast Intl

Wed 4/3

15:45-23:05

1 stop7h 20m

£79

ShannonBelfast

SNN - BFS

SNNBFS

Shannon

Sun 22/3

21:35-08:20

1 stop10h 45m

Belfast Intl

Sun 29/3

19:35-09:45

1 stop14h 10m

£80

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Fri 20/3

06:30-17:35

1 stop11h 05m

Belfast Intl

Fri 27/3

18:00-23:05

1 stop5h 05m

£80

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Sun 1/3

06:30-12:00

1 stop5h 30m

Belfast Intl

Wed 4/3

07:40-16:05

1 stop8h 25m

£80

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Tue 3/3

21:15-10:20

1 stop13h 05m

Belfast Intl

Tue 10/3

16:30-23:40

1 stop7h 10m

£82

CorkBelfast

ORK - BFS

ORKBFS

Cork

Fri 20/3

22:20-08:50

1 stop10h 30m

Belfast Intl

Fri 27/3

18:00-22:45

1 stop4h 45m

£86

CorkBelfast

ORK - BHD

ORKBHD

Cork

Sun 15/3

11:15-21:00

1 stop9h 45m

Belfast City

Sat 21/3

06:30-10:45

1 stop4h 15m

£215

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?

Ryanair, Aer Lingus, 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

Fastest flight time

3h 30m

Direct flights

None
The fastest flight from Ireland to Belfast takes 3h 30m
There are no direct flights from Ireland to Belfast. There are no popular flight routes from Ireland to Belfast.
Search flight deals

  • 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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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
Belfast Intl Airport
Belfast City Airport