AirHint found the following cheapest return flights from Hamilton (YHM) to Seoul (ICN) in October 2025 (see full year).

Return flights

01 Oct - 16 Oct	WestJet
05 Oct - 19 Oct	WestJet
05 Oct - 18 Oct	WestJet
03 Oct - 24 Oct	WestJet
17 Oct - 19 Oct	WestJet
04 Oct - 11 Oct	WestJet
18 Oct - 26 Oct	WestJet
01 Oct - 17 Oct	WestJet
03 Oct - 17 Oct	WestJet
06 Oct - 20 Oct	WestJet
23 Oct - 03 Nov	WestJet
18 Oct - 01 Nov	WestJet
13 Oct - 10 Nov	WestJet

Also check the deals for one-way flights from Hamilton to Seoul in October.

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 Hamilton to Seoul in October from $877

Return flights