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Cheap flights from Belfast to Dublin from £43

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 23/10. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — DUB
11 Sep — 18 Sep1
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 12 August 2026.

Mon 7/918:50 -
1 stop5h 15m
Mon 21/921:10 -
1 stop12h 50m
Deal found 11/8£71
Tue 8/907:35 -
1 stop8h 50m
Thu 10/923:50 -
1 stop8h 40m
Deal found 9/8£73
Fri 4/919:20 -
1 stop5h 40m
Fri 11/907:55 -
1 stop7h 10m
Deal found 7/8£74
Mon 7/908:40 -
1 stop6h 15m
Mon 14/909:00 -
1 stop9h 25m
Deal found 8/8£76
Thu 24/914:50 -
1 stop8h 30m
Thu 1/1007:30 -
1 stop14h 50m
Deal found 10/8£77
Thu 3/920:40 -
1 stop11h 00m
Sun 6/923:10 -
1 stop9h 05m
Deal found 10/8£79
Thu 17/912:45 -
1 stop5h 25m
Wed 23/906:30 -
1 stop8h 45m
Deal found 10/8£81
Thu 1/1014:50 -
1 stop8h 10m
Mon 5/1006:20 -
1 stop12h 05m
Deal found 11/8£81
Sun 6/907:10 -
1 stop3h 20m
Sun 13/906:05 -
1 stop3h 15m
Deal found 9/8£84
Wed 9/918:20 -
1 stop5h 15m
Wed 16/905:45 -
1 stop5h 25m
Deal found 10/8£94
Thu 17/915:00 -
1 stop7h 40m
Wed 23/905:45 -
1 stop5h 25m
Deal found 10/8£95
Tue 8/912:50 -
1 stop4h 40m
Tue 15/912:55 -
1 stop3h 35m
Deal found 11/8£101

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 12 August 2026.

Round-trip from

£71

One-way from

£43
7/9-21/9
  • 7/9-21/9
  • 2 total stops
  • 18h 05m total
  • Belfast to Dublin
Search Deals
23/10
  • 23/10
  • 1 total stop
  • 5h 40m 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 12 August 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 Belfast Intl - DUB Dublin

BFSDUB

Belfast Intl

Mon 7/9

18:50-00:05

1 stop5h 15m

Dublin

Mon 21/9

21:10-10:00

1 stop12h 50m

£71

BelfastDublin

BFS Belfast Intl - DUB Dublin

BFSDUB

Belfast Intl

Tue 8/9

07:35-16:25

1 stop8h 50m

Dublin

Thu 10/9

23:50-08:30

1 stop8h 40m

£73

BelfastDublin

BFS Belfast Intl - DUB Dublin

BFSDUB

Belfast Intl

Sat 26/9

09:30-12:55

1 stop3h 25m

Dublin

Sat 3/10

06:30-14:15

1 stop7h 45m

£74

BelfastDublin

BFS Belfast Intl - DUB Dublin

BFSDUB

Belfast Intl

Thu 1/10

09:15-18:55

1 stop9h 40m

Dublin

Mon 5/10

06:20-18:25

1 stop12h 05m

£74

BelfastDublin

BFS Belfast Intl - DUB Dublin

BFSDUB

Belfast Intl

Fri 18/9

17:05-21:10

1 stop4h 05m

Dublin

Mon 21/9

06:30-12:20

1 stop5h 50m

£75

BelfastDublin

BFS Belfast Intl - DUB Dublin

BFSDUB

Belfast Intl

Mon 7/9

08:40-14:55

1 stop6h 15m

Dublin

Mon 14/9

09:00-18:25

1 stop9h 25m

£76

BelfastDublin

BFS Belfast Intl - DUB Dublin

BFSDUB

Belfast Intl

Thu 3/9

20:40-07:40

1 stop11h 00m

Dublin

Sun 6/9

23:10-08:15

1 stop9h 05m

£79

BelfastDublin

BFS Belfast Intl - DUB Dublin

BFSDUB

Belfast Intl

Tue 8/9

07:35-14:05

1 stop6h 30m

Dublin

Wed 9/9

06:30-15:15

1 stop8h 45m

£79
Fastest return journey

BelfastDublin

BHD Belfast City - DUB Dublin

BHDDUB

Belfast City

Tue 8/9

12:50-17:30

1 stop4h 40m

Dublin

Tue 15/9

12:55-16:30

1 stop3h 35m

£101

BelfastDublin

BHD Belfast City - DUB Dublin

BHDDUB

Belfast City

Thu 1/10

15:25-23:20

1 stop7h 55m

Dublin

Mon 5/10

20:25-07:35

1 stop11h 10m

£112

Flights are sorted by cheapest return flights first.

Deals found on 7/8

Showing 1-10 of 28 resultsSorted by cheapest first
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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.

  • How long is the flight from Belfast to Dublin?

    Departing from Belfast to Dublin will take you 5h 10m. There are 84 mi between Belfast and Dublin.

  • 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
Arklow
Cavan
Swords
Portmarnock
Athlone
Dundalk
Bray
Wicklow
Malahide
Maynooth
Drogheda
Kildare

Browse thousands of different options on Cheapflights for your next trip

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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 12 August 2026.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£28Average£120FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
Aer LingusCheapest£74Average£103FlexibilityNo 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.

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