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

Return flights

07 Sep - 11 Sep	Flair Airlines
30 Sep - 10 Oct	WestJet
16 Sep - 24 Sep	WestJet
30 Sep - 12 Oct	WestJet
15 Sep - 24 Sep	WestJet
09 Sep - 26 Sep	WestJet
25 Sep - 01 Oct	WestJet
22 Sep - 03 Oct	WestJet
25 Sep - 28 Sep	WestJet
15 Sep - 03 Oct	WestJet
08 Sep - 03 Oct	WestJet
08 Sep - 21 Sep	WestJet
13 Sep - 24 Sep	WestJet
11 Sep - 14 Sep	WestJet
08 Sep - 17 Sep	WestJet
22 Sep - 28 Sep	WestJet
09 Sep - 15 Oct	WestJet
08 Sep - 08 Oct	WestJet
08 Sep - 15 Oct	WestJet

Also check the deals for one-way flights from Waterloo 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.

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Cheapest return flights from Waterloo to Dublin in September from $579

Return flights