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

Return flights

23 Sep - 30 Sep	WestJet
16 Sep - 30 Sep	WestJet
01 Sep - 08 Sep	WestJet
17 Sep - 24 Sep	WestJet
24 Sep - 01 Oct	WestJet
01 Sep - 15 Sep	Flair Airlines
16 Sep - 23 Sep	WestJet
21 Sep - 28 Sep	WestJet
18 Sep - 25 Sep	WestJet
03 Sep - 10 Sep	WestJet
04 Sep - 11 Sep	WestJet
27 Sep - 04 Oct	Air Canada
28 Sep - 05 Oct	Air Canada
29 Sep - 06 Oct	Air Canada
30 Sep - 07 Oct	Air Canada
26 Sep - 03 Oct	Air Canada
25 Sep - 02 Oct	Air Canada

Also check the deals for one-way flights from Montreal to Seoul 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 Montreal to Seoul in September from 1059€

Return flights