Cheap flights from Belfast to County Dublin

View AU$256 flight on Mon, 18 Aug. 2025Opens in a new window

Popular airlines from Belfast to County Dublin

  • British Airways

    British Airways

  • KLM

    KLM

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 35% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Belfast (BFS) to County Dublin (DUB)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Thu, 11 Sep. - Mon, 15 Sep.
BHD
Belfast
DUB
Dublin
AU$419 Return, found 4 days ago
AU$419
Return
found 4 days ago
Select British Airways flight, departing Thu, 11 Sep. from Belfast to Dublin, returning Mon, 15 Sep., priced at AU$419 found 4 days ago
British Airways
Fri, 29 Aug. - Tue, 2 Sep.
BHD
Belfast
DUB
Dublin
AU$424 Return, found 2 days ago
AU$424
Return
found 2 days ago
Select British Airways flight, departing Fri, 29 Aug. from Belfast to Dublin, returning Tue, 2 Sep., priced at AU$424 found 2 days ago
British Airways
Thu, 11 Sep. - Mon, 15 Sep.
BHD
Belfast
DUB
Dublin
AU$427 Return, found 4 days ago
AU$427
Return
found 4 days ago
Select British Airways flight, departing Thu, 11 Sep. from Belfast to Dublin, returning Mon, 15 Sep., priced at AU$427 found 4 days ago
British Airways
Fri, 29 Aug. - Tue, 2 Sep.
BHD
Belfast
DUB
Dublin
AU$433 Return, found 2 days ago
AU$433
Return
found 2 days ago
Select British Airways flight, departing Fri, 29 Aug. from Belfast to Dublin, returning Tue, 2 Sep., priced at AU$433 found 2 days ago
KLM
Thu, 22 Jan. - Thu, 12 Feb.
BHD
Belfast
DUB
Dublin
AU$521 Return, found 5 days ago
AU$521
Return
found 5 days ago
Select KLM flight, departing Thu, 22 Jan. from Belfast to Dublin, returning Thu, 12 Feb., priced at AU$521 found 5 days ago
Aer Lingus
Tue, 5 Aug. - Thu, 14 Aug.
BHD
Belfast
DUB
Dublin
AU$589 Return, found 1 day ago
AU$589
Return
found 1 day ago
Select Aer Lingus flight, departing Tue, 5 Aug. from Belfast to Dublin, returning Thu, 14 Aug., priced at AU$589 found 1 day ago

Find the cheapest month to fly from Belfast (BFS) to Dublin (DUB)

January is typically the cheapest month to fly

From AU$265 - AU$513 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.