AirHint found the following cheapest return flights from Hamilton (YHM) to Dublin (DUB) in September 2025 (see full year).

Return flights

15 Sep - 03 Oct	Porter Airlines (Canada) Ltd
08 Sep - 17 Sep	WestJet
02 Sep - 09 Sep	WestJet
18 Sep - 23 Sep	WestJet
15 Sep - 19 Sep	WestJet
11 Sep - 17 Sep	WestJet
11 Sep - 14 Sep	WestJet
11 Sep - 19 Sep	WestJet
01 Sep - 09 Sep	WestJet
06 Sep - 14 Sep	WestJet
02 Sep - 16 Sep	WestJet
22 Sep - 01 Oct	WestJet
30 Sep - 10 Oct	WestJet
30 Sep - 07 Oct	WestJet
16 Sep - 07 Oct	WestJet
29 Sep - 05 Oct	WestJet
09 Sep - 07 Oct	WestJet
20 Sep - 05 Oct	WestJet
25 Sep - 05 Oct	WestJet
04 Sep - 05 Oct	WestJet

Also check the deals for one-way flights from Hamilton to Dublin in September.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Dublin

Cheap car rent in Dublin

Cheapest return flights from Hamilton to Dublin in September from $792

Return flights