AirHint found the following cheapest return flights from Calgary (YYC) to Dublin (DUB) in September 2026 (see full year).

Return flights

28 Sep - 21 Oct	WestJet	direct
07 Sep - 23 Sep	WestJet	direct
22 Sep - 29 Sep	WestJet	direct
01 Sep - 08 Sep	WestJet	direct
01 Sep - 15 Sep	WestJet	direct
05 Sep - 16 Sep	WestJet	direct
07 Sep - 14 Sep	WestJet
03 Sep - 10 Sep	Air Transat
05 Sep - 12 Sep	WestJet
19 Sep - 26 Sep	WestJet
08 Sep - 15 Sep	WestJet

Also check the deals for one-way flights from Calgary 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 Calgary to Dublin in September from 529€

Return flights