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Cheap flights from Ireland to Belfast from £39

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 18/3. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — BHD
14 Mar — 21 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ireland to Belfast

Enter your travel dates to find the best prices.

Cheapest flights from Ireland to Belfast
Explore the most affordable flight options available from Ireland to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 February 2026.

Fri 13/306:45
DUB
-
BFS
1 stop13h 40m
Multiple Airlines
Fri 20/318:00
BFS
-
DUB
1 stop3h 25m
Multiple Airlines
Deal found 10/2£74
Thu 26/306:15
DUB
-
BFS
1 stop9h 55m
Multiple Airlines
Thu 2/412:45
BFS
-
DUB
1 stop11h 10m
Multiple Airlines
Deal found 9/2£75
Sat 28/315:00
DUB
-
BFS
1 stop7h 00m
Multiple Airlines
Sat 4/409:30
BFS
-
DUB
1 stop10h 30m
Multiple Airlines
Deal found 11/2£76
Thu 5/306:15
DUB
-
BFS
1 stop9h 55m
Multiple Airlines
Mon 9/307:50
BFS
-
DUB
1 stop7h 05m
Multiple Airlines
Deal found 9/2£79
Wed 11/314:20
SNN
-
BFS
1 stop4h 30m
Multiple Airlines
Wed 18/307:40
BFS
-
SNN
1 stop6h 15m
Multiple Airlines
Deal found 9/2£81
Wed 11/313:00
DUB
-
BFS
1 stop5h 50m
Multiple Airlines
Wed 18/315:45
BFS
-
DUB
1 stop4h 20m
Multiple Airlines
Deal found 11/2£81
Sat 28/315:00
DUB
-
BFS
1 stop7h 00m
Multiple Airlines
Mon 30/308:40
BFS
-
DUB
1 stop8h 20m
Multiple Airlines
Deal found 12/2£81
Fri 6/322:20
ORK
-
BFS
1 stop10h 30m
Multiple Airlines
Sun 8/322:45
BFS
-
ORK
1 stop8h 40m
Multiple Airlines
Deal found 9/2£82
Sun 29/323:10
DUB
-
BFS
1 stop9h 05m
Multiple Airlines
Sun 5/407:10
BFS
-
DUB
1 stop3h 20m
Multiple Airlines
Deal found 11/2£87
Sun 1/306:30
DUB
-
BFS
1 stop5h 30m
Multiple Airlines
Wed 4/315:45
BFS
-
DUB
1 stop7h 20m
Multiple Airlines
Deal found 11/2£89
Mon 9/318:45
DUB
-
BFS
1 stop14h 20m
Multiple Airlines
Mon 16/307:00
BFS
-
DUB
1 stop10h 05m
Multiple Airlines
Deal found 8/2£90
Sun 29/307:30
SNN
-
BFS
1 stop4h 25m
Multiple Airlines
Sun 5/407:10
BFS
-
SNN
1 stop9h 15m
Multiple Airlines
Deal found 11/2£92

Find flight deals from Ireland to Belfast

Keep the following information in mind while searching for Ireland to Belfast flight deals. Data was last updated 12 February 2026.

Round-trip from

£72

One-way from

£39
29/3-5/4
  • 29/3-5/4
  • 2 total stops
  • 28h 15m total
  • Ireland to Belfast
Search Deals
18/3
  • 18/3
  • 1 total stop
  • 3h 35m total
  • Ireland to Belfast
Search Deals

Cheapflights 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, Cheapflights users made 858,174 searches. Data last updated 12 February 2026.
Use the filters below to find and compare flights from Ireland to Belfast that are best for you.

Fly from

Ireland

Fly to

Belfast

Route

Depart

Return

Price

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Fri 13/3

06:45-20:25

1 stop13h 40m

Belfast Intl

Fri 20/3

18:00-21:25

1 stop3h 25m

£74

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Thu 26/3

06:15-16:10

1 stop9h 55m

Belfast Intl

Thu 2/4

12:45-23:55

1 stop11h 10m

£75

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Sat 28/3

15:00-22:00

1 stop7h 00m

Belfast Intl

Sat 4/4

09:30-20:00

1 stop10h 30m

£76

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Thu 5/3

06:15-16:10

1 stop9h 55m

Belfast Intl

Mon 9/3

07:50-14:55

1 stop7h 05m

£79

ShannonBelfast

SNN - BFS

SNNBFS

Shannon

Wed 11/3

14:20-18:50

1 stop4h 30m

Belfast Intl

Wed 18/3

07:40-13:55

1 stop6h 15m

£81

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Wed 11/3

13:00-18:50

1 stop5h 50m

Belfast Intl

Wed 18/3

15:45-20:05

1 stop4h 20m

£81

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Sat 28/3

15:00-22:00

1 stop7h 00m

Belfast Intl

Mon 30/3

08:40-17:00

1 stop8h 20m

£81

CorkBelfast

ORK - BFS

ORKBFS

Cork

Fri 6/3

22:20-08:50

1 stop10h 30m

Belfast Intl

Sun 8/3

22:45-07:25

1 stop8h 40m

£82

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Thu 28/5

23:50-08:30

1 stop8h 40m

Belfast Intl

Fri 29/5

19:20-23:00

1 stop3h 40m

£85

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

£89

Flights are sorted by cheapest return flights first.

Deals found on 9/2

Showing 1-10 of 58 results
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Best time to book a flight from Ireland to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast from 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 Ireland to Belfast
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 Ireland to Belfast. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the most popular routes from Ireland to Belfast?

    The most popular route from Ireland to Belfast is Dublin - Belfast Intl. You may also consider Dublin - Belfast City or Cork - Belfast Intl.

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

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

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

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

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

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

See more FAQs

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Alternative routes for Ireland to Belfast

See prices for flight routes from nearby airports that may be better suited for you.
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Cardiff to Belfast Intl flights
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East Midlands to Belfast Intl flights
Newcastle upon Tyne to Belfast City flights
Lyon to Belfast Intl flights
Amsterdam to Belfast City flights
Cork to Belfast Intl flights
Madrid to Belfast Intl flights
East Midlands to Belfast City flights
Berlin to Belfast Intl flights
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Heathrow to Derry flights
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Berlin to Belfast City flights

Fly with Cheapflights

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

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Why should you use Cheapflights to find cheap flight tickets from Ireland to Belfast?

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Users can book flights with no change fees policies with our dedicated filters. Book flights from Ireland to Belfast flexibly with Cheapflights today.

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