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

Return flights

24 Aug - 23 Sep	WestJet
14 Aug - 20 Sep	WestJet
21 Aug - 22 Sep	WestJet
24 Aug - 25 Sep	WestJet
21 Aug - 25 Sep	WestJet
21 Aug - 20 Sep	WestJet
20 Aug - 22 Sep	WestJet
07 Aug - 24 Aug	WestJet
13 Aug - 25 Aug	WestJet
14 Aug - 25 Aug	WestJet
13 Aug - 26 Aug	WestJet
24 Aug - 31 Aug	WestJet
23 Aug - 01 Sep	WestJet
10 Aug - 20 Aug	WestJet
09 Aug - 20 Aug	WestJet
11 Aug - 25 Aug	WestJet
15 Aug - 21 Aug	Flair Airlines
11 Aug - 20 Aug	WestJet
27 Aug - 01 Sep	WestJet
23 Aug - 01 Sep	WestJet	direct

Also check the deals for one-way flights from Calgary to Seoul 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 Seoul in August from 653€

Return flights