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

Return flights

22 May - 06 Jun	WestJet
16 May - 13 Jun	WestJet
28 May - 13 Jun	WestJet
31 May - 07 Jun	WestJet
22 May - 13 Jun	WestJet
22 May - 12 Jun	WestJet
29 May - 14 Jun	WestJet
09 May - 24 May	WestJet
08 May - 29 May	WestJet
09 May - 21 May	WestJet
15 May - 25 May	WestJet
22 May - 31 May	WestJet
28 May - 09 Jun	WestJet
11 May - 21 May	WestJet
09 May - 23 May	WestJet
14 May - 31 May	WestJet
16 May - 23 May	WestJet
21 May - 05 Jun	WestJet
10 May - 17 May	Flair Airlines
28 May - 12 Jun	WestJet

Also check the deals for one-way flights from Montreal to Seoul in May.

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 May from $911

Return flights