Find flights
When to book
FAQs

Cheap flights from Belfast to Dublin from £40

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 23/6. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — DUB
22 Apr — 29 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Belfast to Dublin

Enter your travel dates to find the best prices.

Cheapest flights from Belfast to Dublin
Explore the most affordable flight options available from Belfast to Dublin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 March 2026.

Thu 14/512:45
BFS
-
DUB
1 stop7h 45m
Multiple Airlines
Mon 18/522:05
DUB
-
BFS
1 stop14h 10m
Multiple Airlines
Deal found 21/3£76
Thu 16/412:45
BFS
-
DUB
1 stop7h 45m
Multiple Airlines
Thu 23/410:20
DUB
-
BFS
1 stop5h 00m
Multiple Airlines
Deal found 19/3£77
Thu 26/314:00
BFS
-
DUB
1 stop9h 45m
Multiple Airlines
Mon 30/321:10
DUB
-
BFS
1 stop12h 50m
Multiple Airlines
Deal found 23/3£79
Fri 17/408:55
BFS
-
DUB
1 stop7h 05m
Multiple Airlines
Fri 24/414:00
DUB
-
BFS
1 stop4h 55m
Multiple Airlines
Deal found 20/3£82
Thu 7/512:45
BFS
-
DUB
1 stop5h 25m
Multiple Airlines
Thu 14/515:45
DUB
-
BFS
1 stop6h 35m
Multiple Airlines
Deal found 22/3£84
Sat 18/406:55
BFS
-
DUB
1 stop4h 40m
Multiple Airlines
Sat 25/406:30
DUB
-
BFS
1 stop7h 45m
Multiple Airlines
Deal found 21/3£87
Sun 19/422:00
BFS
-
DUB
1 stop10h 45m
Multiple Airlines
Mon 20/415:40
DUB
-
BFS
1 stop5h 50m
Multiple Airlines
Deal found 22/3£88
Mon 18/519:35
BFS
-
DUB
1 stop4h 30m
Multiple Airlines
Wed 27/512:00
DUB
-
BFS
1 stop10h 30m
Multiple Airlines
Deal found 21/3£91
Mon 20/408:40
BFS
-
DUB
1 stop11h 30m
Multiple Airlines
Mon 27/419:55
DUB
-
BFS
1 stop12h 10m
Multiple Airlines
Deal found 23/3£91
Wed 6/507:30
BFS
-
DUB
1 stop7h 20m
Multiple Airlines
Wed 13/510:05
DUB
-
BFS
1 stop5h 10m
Multiple Airlines
Deal found 22/3£92
Thu 14/515:00
BHD
-
DUB
1 stop7h 40m
Multiple Airlines
Mon 18/507:55
DUB
-
BHD
1 stop4h 00m
Multiple Airlines
Deal found 21/3£93
Mon 20/409:50
BHD
-
DUB
1 stop9h 05m
Multiple Airlines
Mon 27/407:55
DUB
-
BHD
1 stop4h 00m
Multiple Airlines
Deal found 23/3£102

Find flight deals from Belfast to Dublin

Discover tips and strategies to find the most affordable flight options for your journey from Belfast (BF1) to Dublin (DUB). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 23 March 2026.

Round-trip from

£76

One-way from

£40
14/5-18/5
  • 14/5-18/5
  • 2 total stops
  • 21h 55m total
  • Belfast to Dublin
Search Deals
23/6
  • 23/6
  • 1 total stop
  • 8h 50m total
  • Belfast to Dublin
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast to Dublin 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 23 March 2026.
Use the filters below to find and compare flights from Belfast to Dublin that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Thu 14/5

12:45-20:30

1 stop7h 45m

Dublin

Mon 18/5

22:05-12:15

1 stop14h 10m

£76

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Wed 6/5

15:40-20:45

1 stop5h 05m

Dublin

Wed 13/5

10:50-19:50

1 stop9h 00m

£77

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Thu 7/5

12:45-18:10

1 stop5h 25m

Dublin

Thu 14/5

15:45-22:20

1 stop6h 35m

£84

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Fri 17/4

08:55-21:10

1 stop12h 15m

Dublin

Fri 24/4

22:10-10:45

1 stop12h 35m

£85

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Sat 18/4

06:55-11:35

1 stop4h 40m

Dublin

Sat 25/4

06:30-14:15

1 stop7h 45m

£87

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Mon 18/5

19:35-00:05

1 stop4h 30m

Dublin

Wed 27/5

12:00-22:30

1 stop10h 30m

£91

BelfastDublin

BHD - DUB

BHDDUB

Belfast City

Thu 14/5

15:00-22:40

1 stop7h 40m

Dublin

Mon 18/5

07:55-11:55

1 stop4h 00m

£93

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Sun 3/5

07:00-12:20

1 stop5h 20m

Dublin

Sun 10/5

06:30-11:55

1 stop5h 25m

£95

BelfastDublin

BFS - DUB

BFSDUB

Belfast Intl

Fri 8/5

19:20-23:00

1 stop3h 40m

Dublin

Mon 11/5

21:10-10:00

1 stop12h 50m

£95

BelfastDublin

BHD - DUB

BHDDUB

Belfast City

Fri 17/4

06:50-14:50

1 stop8h 00m

Dublin

Fri 24/4

21:10-09:40

1 stop12h 30m

£128

Flights are sorted by cheapest return flights first.

Deals found on 19/3

Showing 1-10 of 39 resultsSorted by cheapest first
1
2
3
4

Best time to book a flight from Belfast to Dublin

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

  • What airport do you fly into for flights to Dublin from Belfast?

    Dublin (DUB), located 5.7 mi from the city center, is the airport you fly into when you book flights from Belfast to Dublin. 2 airlines have flights to Dublin from Belfast on a regular basis. Booking flights from Belfast to Dublin should not be difficult; the airport handles an average of 0 inbound flights from Belfast per day.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Belfast to Dublin 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

Travelling to a place near Dublin?

Book flights to Dublin if you plan to visit one of these locations
Athlone
Arklow
Tullamore
Cavan
Portmarnock
Dundalk
Wicklow
Enniscorthy
Bray
Mullingar
Drogheda
Malahide
Kildare
Maynooth
Swords
Carlingford

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 2 airlines flying from Belfast to Dublin

Discover the top 2 airlines that operate flights from Belfast to Dublin. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 23 March 2026.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£39Average£161FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
Aer LingusCheapest£70Average£114FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights helps you search for flights from Belfast to Dublin via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Belfast to Dublin for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Belfast to Dublin with no change fees?

Yes, we can. To see specific flights from Belfast to Dublin with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Belfast to Dublin become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Dublin from Belfast today and book when prices fit your budget.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.