AirHint found the following cheapest return flights from Montreal (YUL) to Seoul (ICN) in August 2026 (see full year).

Return flights

27 Aug - 03 Sep	KLM
31 Aug - 07 Sep	KLM
26 Aug - 02 Sep	KLM
24 Aug - 31 Aug	KLM
25 Aug - 01 Sep	KLM
29 Aug - 05 Sep	KLM
28 Aug - 04 Sep	KLM
30 Aug - 06 Sep	KLM
17 Aug - 24 Aug	KLM
05 Aug - 12 Aug	Air France
04 Aug - 11 Aug	Air France
06 Aug - 13 Aug	Air France
11 Aug - 18 Aug	KLM
03 Aug - 10 Aug	WestJet
09 Aug - 16 Aug	KLM
08 Aug - 15 Aug	Etihad Airways
23 Aug - 30 Aug	Air Canada

Also check the deals for one-way flights from Montreal 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 Montreal to Seoul in August from 1257€

Return flights