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

Return flights

03 May - 17 May	WestJet
03 May - 23 May	WestJet
01 May - 23 May	WestJet
01 May - 07 Jun	WestJet
23 May - 09 Jun	WestJet
09 May - 28 May	Porter Airlines (Canada) Ltd
11 May - 18 May	WestJet
02 May - 09 May	WestJet
26 May - 09 Jun	Porter Airlines (Canada) Ltd
21 May - 28 May	WestJet
10 May - 17 May	WestJet
28 May - 04 Jun	WestJet
19 May - 09 Jun	Porter Airlines (Canada) Ltd
16 May - 23 May	WestJet
10 May - 24 May	WestJet
29 May - 06 Jun	WestJet
31 May - 07 Jun	WestJet
30 May - 06 Jun	WestJet
26 May - 04 Jun	Porter Airlines (Canada) Ltd
21 May - 05 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 648€

Return flights