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Cheap flights from Belfast to Ireland from £42

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Belfast to Ireland departing on 17/1. 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 Belfast to Ireland

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
06:15 - 19:35
BFS
-
DUB
13h 20m1 stop
Multiple Airlines Logo
07:00 - 18:25
DUB
-
BFS
11h 25m1 stop
£81Multiple Airlines
Thu, 29 Jan - Mon, 2 Feb
Multiple Airlines Logo
18:35 - 08:10
BFS
-
SNN
13h 35m1 stop
Multiple Airlines Logo
14:20 - 18:50
SNN
-
BFS
4h 30m1 stop
£85Multiple Airlines
Thu, 29 Jan - Wed, 4 Feb
Multiple Airlines Logo
21:05 - 07:20
BFS
-
ORK
10h 15m1 stop
Multiple Airlines Logo
05:45 - 10:20
ORK
-
BFS
4h 35m1 stop
£85Multiple Airlines
Wed, 4 Feb - Wed, 11 Feb
Multiple Airlines Logo
07:40 - 16:05
BFS
-
DUB
8h 25m1 stop
Multiple Airlines Logo
06:30 - 10:45
DUB
-
BFS
4h 15m1 stop
£86Multiple Airlines
Wed, 4 Feb - Wed, 11 Feb
Multiple Airlines Logo
13:55 - 23:05
BFS
-
DUB
9h 10m1 stop
Multiple Airlines Logo
20:00 - 09:20
DUB
-
BFS
13h 20m1 stop
£86Multiple Airlines
Wed, 4 Feb - Wed, 11 Feb
Multiple Airlines Logo
10:35 - 16:00
BFS
-
DUB
5h 25m1 stop
Multiple Airlines Logo
17:00 - 21:55
DUB
-
BFS
4h 55m1 stop
£87Multiple Airlines
Mon, 19 Jan - Mon, 26 Jan
British Airways Logo
06:35 - 14:20
BHD
-
DUB
7h 45m1 stop
British Airways Logo
15:10 - 07:40
DUB
-
BHD
16h 30m1 stop
£185British Airways
Sat, 24 Jan - Mon, 26 Jan
British Airways Logo
09:15 - 14:20
BHD
-
DUB
5h 05m1 stop
British Airways Logo
13:40 - 19:40
DUB
-
BHD
6h 00m1 stop
£232British Airways
Wed, 18 Feb - Sun, 22 Feb
British Airways Logo
06:35 - 17:00
BHD
-
DUB
10h 25m1 stop
British Airways Logo
13:40 - 20:30
DUB
-
BHD
6h 50m1 stop
£233British Airways
Wed, 18 Feb - Sun, 22 Feb
Aer Lingus Logo
10:20 - 11:30
BHD
-
SNN
25h 10m3 stops
Aer Lingus Logo
07:50 - 20:50
SNN
-
BHD
13h 00m3 stops
£700Aer Lingus
Thu, 29 Jan - Wed, 4 Feb

British Airways flights from Belfast to Ireland

Our best British Airways deals on Belfast to Ireland flight tickets
British Airways
24 Jan
BHD06:35Belfast City
7h 45m
1 stop
DUB14:20Dublin
26 Jan
DUB15:10Dublin
16h 30m
1 stop
BHD07:40Belfast City
£185
Find similar
British Airways
18 Feb
BHD09:15Belfast City
5h 05m
1 stop
DUB14:20Dublin
22 Feb
DUB13:40Dublin
6h 00m
1 stop
BHD19:40Belfast City
£232
Find similar
British Airways
18 Feb
BHD06:35Belfast City
10h 25m
1 stop
DUB17:00Dublin
22 Feb
DUB13:40Dublin
6h 50m
1 stop
BHD20:30Belfast City
£233
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Belfast 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 23 December 2025.
Use the filters below to find and compare flights from Belfast to Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Thu 29/1

06:15-19:35

1 stop13h 20m

Dublin

Mon 2/2

07:00-18:25

1 stop11h 25m

£81

BelfastShannon

BFS - SNN

BFSSNN

Belfast Intl

Thu 29/1

18:35-08:10

1 stop13h 35m

Shannon

Wed 4/2

14:20-18:50

1 stop4h 30m

£85

BelfastCork

BFS - ORK

BFSORK

Belfast Intl

Wed 4/2

21:05-07:20

1 stop10h 15m

Cork

Wed 11/2

05:45-10:20

1 stop4h 35m

£85

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Wed 4/2

07:40-16:05

1 stop8h 25m

Dublin

Wed 11/2

06:30-10:45

1 stop4h 15m

£86

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Wed 4/2

13:55-23:05

1 stop9h 10m

Dublin

Wed 11/2

20:00-09:20

1 stop13h 20m

£86

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Mon 19/1

10:35-16:00

1 stop5h 25m

Dublin

Mon 26/1

17:00-21:55

1 stop4h 55m

£87

BelfastDublin

BHD - DUB

BHDDUB

Belfast City

Sat 24/1

06:35-14:20

1 stop7h 45m

Dublin

Mon 26/1

15:10-07:40

1 stop16h 30m

£185

BelfastDublin

BHD - DUB

BHDDUB

Belfast City

Wed 18/2

09:15-14:20

1 stop5h 05m

Dublin

Sun 22/2

13:40-19:40

1 stop6h 00m

£232

BelfastDublin

BHD - DUB

BHDDUB

Belfast City

Wed 18/2

06:35-17:00

1 stop10h 25m

Dublin

Sun 22/2

13:40-20:30

1 stop6h 50m

£233

BelfastShannon

BHD - SNN

BHDSNN

Belfast City

Thu 29/1

10:20-11:30

3 stops25h 10m

Shannon

Wed 4/2

07:50-20:50

3 stops13h 00m

£700

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Ireland from

How to get the cheapest flight ticket from Belfast 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 Belfast to Ireland when you can find flight prices for as low as £137. 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 £157. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Cheap Belfast to Ireland flight deals and tips

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

Fastest flight time

5h 00m

Direct flights

None
The fastest flight from Belfast to Ireland takes 5h 00m
There are no direct flights from Belfast to Ireland. There are no popular flight routes from Belfast to Ireland.
Search flight deals

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

    Prices for flights from Belfast to Ireland are updated daily.

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

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

    The travel and health documents you'll need for your trip to Ireland may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ireland. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Belfast to Ireland

Compare and see reviews for airlines that fly from Belfast to Ireland with momondo
Airline
Rating
Free Cancellation
Price
RyanairPriceFrom £38Free CancellationRating
6.9
5,222 reviews
Search Ryanair flights
Aer LingusPriceFrom £59Free CancellationRating
7.2
1,412 reviews
Search Aer Lingus flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Belfast to Ireland for you.

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

All flight searches from Belfast to Ireland on momondo can be filtered to show those which offer flexible booking policies.

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

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

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

Yes momondo offers price alerts on flights to Ireland from Belfast. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Find better results for your trip to Ireland

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