AirHint found the following cheapest return flights from Calgary (YYC) to Dublin (DUB) in August 2025 (see full year).

Return flights

26 Aug - 09 Sep	WestJet
05 Aug - 15 Aug	Finnair
19 Aug - 02 Sep	WestJet	direct
12 Aug - 19 Aug	Iberia
29 Aug - 08 Sep	WestJet
11 Aug - 14 Aug	British Airways
11 Aug - 03 Sep	WestJet
10 Aug - 20 Aug	WestJet
15 Aug - 01 Sep	WestJet
04 Aug - 11 Aug	WestJet
19 Aug - 26 Aug	WestJet
02 Aug - 22 Aug	WestJet
31 Aug - 13 Sep	WestJet
13 Aug - 26 Aug	Lufthansa
16 Aug - 20 Aug	Finnair
11 Aug - 03 Sep	WestJet	direct
15 Aug - 31 Aug	British Airways
26 Aug - 12 Sep	WestJet

Also check the deals for one-way flights from Calgary to Dublin in August.

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 August from $498

Return flights