AirHint found the following cheapest return flights from Montreal (YUL) to Seoul (ICN) in December 2025 (see full year).

Return flights

03 Dec - 10 Dec	Turkish Airlines
05 Dec - 12 Dec	Turkish Airlines
07 Dec - 14 Dec	Turkish Airlines
08 Dec - 15 Dec	WestJet
02 Dec - 09 Dec	Air France
04 Dec - 11 Dec	Air France
01 Dec - 08 Dec	Air France
09 Dec - 16 Dec	Air France
10 Dec - 17 Dec	Turkish Airlines
06 Dec - 13 Dec	Air France
31 Dec - 07 Jan	Air Canada
25 Dec - 01 Jan	WestJet
28 Dec - 04 Jan	Porter Airlines (Canada) Ltd
30 Dec - 06 Jan	Air Canada
29 Dec - 05 Jan	Air Canada
26 Dec - 02 Jan	Air Canada
27 Dec - 03 Jan	Air Canada

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

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 December from 954€

Return flights