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

Return flights

02 May - 01 Jun	WestJet
28 May - 04 Jun	WestJet
22 May - 29 May	WestJet
29 May - 05 Jun	WestJet
07 May - 14 May	WestJet
17 May - 24 May	WestJet
08 May - 15 May	WestJet
10 May - 17 May	WestJet
24 May - 31 May	WestJet
16 May - 23 May	WestJet
03 May - 10 May	WestJet
23 May - 30 May	WestJet
14 May - 21 May	WestJet
01 May - 07 Jun	WestJet
31 May - 07 Jun	WestJet
30 May - 27 Jun	WestJet
30 May - 06 Jun	WestJet
29 May - 28 Jun	WestJet
29 May - 27 Jun	WestJet
25 May - 01 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 814€

Return flights