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Cheap flights from Belfast to Ireland from £40

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 23/6. 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
1 adult, Economy, 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
07:35 - 14:05
BFS
-
DUB
6h 30m
1 stop
Multiple Airlines Logo
21:35 - 11:35
DUB
-
BFS
14h 00m
1 stop
£71Multiple Airlines
Tue, 21 Apr - Tue, 28 Apr
Multiple Airlines Logo
20:15 - 07:50
BFS
-
DUB
11h 35m
1 stop
Multiple Airlines Logo
14:30 - 19:50
DUB
-
BFS
5h 20m
1 stop
£72Multiple Airlines
Wed, 22 Apr - Wed, 29 Apr
Multiple Airlines Logo
06:40 - 12:55
BFS
-
ORK
6h 15m
1 stop
Multiple Airlines Logo
08:15 - 15:20
ORK
-
BFS
7h 05m
1 stop
£72Multiple Airlines
Thu, 7 May - Thu, 14 May
Multiple Airlines Logo
22:45 - 07:15
BFS
-
DUB
8h 30m
1 stop
Multiple Airlines Logo
10:20 - 15:20
DUB
-
BFS
5h 00m
1 stop
£73Multiple Airlines
Thu, 23 Apr - Thu, 30 Apr
Multiple Airlines Logo
21:55 - 08:05
BFS
-
ORK
10h 10m
1 stop
Multiple Airlines Logo
05:55 - 18:25
ORK
-
BFS
12h 30m
1 stop
£73Multiple Airlines
Mon, 11 May - Mon, 18 May
Multiple Airlines Logo
12:45 - 23:25
BFS
-
DUB
10h 40m
1 stop
Multiple Airlines Logo
10:20 - 15:20
DUB
-
BFS
5h 00m
1 stop
£74Multiple Airlines
Thu, 23 Apr - Thu, 30 Apr
Multiple Airlines Logo
18:50 - 23:20
BFS
-
DUB
4h 30m
1 stop
Multiple Airlines Logo
20:35 - 10:00
DUB
-
BFS
13h 25m
1 stop
£74Multiple Airlines
Mon, 11 May - Mon, 18 May
Multiple Airlines Logo
08:55 - 16:00
BFS
-
DUB
7h 05m
1 stop
Multiple Airlines Logo
20:35 - 10:00
DUB
-
BFS
13h 25m
1 stop
£76Multiple Airlines
Fri, 8 May - Mon, 11 May
British Airways Logo
19:35 - 20:35
BHD
-
SNN
25h 00m
1 stop
British Airways Logo
16:50 - 08:50
SNN
-
BHD
16h 00m
1 stop
£401British Airways
Mon, 20 Apr - Wed, 22 Apr
British Airways Logo
16:25 - 16:10
BHD
-
SNN
23h 45m
1 stop
British Airways Logo
21:15 - 08:50
SNN
-
BHD
11h 35m
1 stop
£422British Airways
Tue, 21 Apr - Wed, 22 Apr

British Airways flights from Belfast to Ireland

Our best British Airways deals on Belfast to Ireland flight tickets
British Airways
9 May
BHD19:05Belfast City
12h 40m
1 stop
DUB07:45Dublin
11 May
DUB20:30Dublin
11h 05m
1 stop
BHD07:35Belfast City
£189
British Airways
9 May
BHD19:05Belfast City
12h 40m
1 stop
DUB07:45Dublin
11 May
DUB20:30Dublin
11h 05m
1 stop
BHD07:35Belfast City
£190
British Airways
8 May
BHD20:10Belfast City
11h 30m
1 stop
DUB07:40Dublin
11 May
DUB20:30Dublin
11h 05m
1 stop
BHD07:35Belfast City
£193

KLM flights from Belfast to Ireland

Our best KLM deals on Belfast to Ireland flight tickets
KLM
9 May
BHD17:30Belfast City
4h 55m
1 stop
DUB22:25Dublin
11 May
DUB11:10Dublin
5h 45m
1 stop
BHD16:55Belfast City
£265
KLM
8 May
BHD17:30Belfast City
4h 55m
1 stop
DUB22:25Dublin
11 May
DUB05:55Dublin
11h 00m
1 stop
BHD16:55Belfast City
£283
KLM
8 May
BHD17:30Belfast City
4h 55m
1 stop
DUB22:25Dublin
11 May
DUB08:55Dublin
8h 00m
1 stop
BHD16:55Belfast City
£284

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 27 March 2026.
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

Cheapest return flight

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Tue 21/4

07:35-14:05

1 stop6h 30m

Dublin

Tue 28/4

21:35-11:35

1 stop14h 00m

£71

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Wed 22/4

20:15-07:50

1 stop11h 35m

Dublin

Wed 29/4

14:30-19:50

1 stop5h 20m

£72
Fastest return journey

BelfastCork

BFS - ORK

BFSORK

Belfast Intl

Thu 7/5

06:40-12:55

1 stop6h 15m

Cork

Thu 14/5

08:15-15:20

1 stop7h 05m

£72

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Thu 23/4

22:45-07:15

1 stop8h 30m

Dublin

Thu 30/4

10:20-15:20

1 stop5h 00m

£73

BelfastCork

BFS - ORK

BFSORK

Belfast Intl

Mon 11/5

21:55-08:05

1 stop10h 10m

Cork

Mon 18/5

05:55-18:25

1 stop12h 30m

£73

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Thu 23/4

12:45-23:25

1 stop10h 40m

Dublin

Thu 30/4

10:20-15:20

1 stop5h 00m

£74

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Mon 11/5

18:50-23:20

1 stop4h 30m

Dublin

Mon 18/5

20:35-10:00

1 stop13h 25m

£74

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Fri 8/5

08:55-16:00

1 stop7h 05m

Dublin

Mon 11/5

20:35-10:00

1 stop13h 25m

£76

BelfastShannon

BHD - SNN

BHDSNN

Belfast City

Mon 20/4

19:35-20:35

1 stop25h 00m

Shannon

Wed 22/4

16:50-08:50

1 stop16h 00m

£401

BelfastShannon

BHD - SNN

BHDSNN

Belfast City

Tue 21/4

16:25-16:10

1 stop23h 45m

Shannon

Wed 22/4

21:15-08:50

1 stop11h 35m

£422

Flights are sorted by cheapest return flights first.

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

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

3h 35m

Direct flights

None
The fastest flight from Belfast to Ireland takes 3h 35m
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 £39Free CancellationRating
6.9
5,307 reviews
Search Ryanair flights
Aer LingusPriceFrom £70Free CancellationRating
7.2
1,491 reviews
Search Aer Lingus flights

  • How do I get Price Alerts for flights from Belfast to Ireland?

    Price Alerts will notify you by email when the price for flights to Ireland from Belfast decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from Belfast to Ireland with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

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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