AirHint found the following cheapest return flights from Waterloo (YKF) to Seoul (ICN) in September 2026 (see full year).

Return flights

06 Sep - 22 Sep	Flair Airlines
01 Sep - 08 Sep	WestJet
01 Sep - 22 Sep	WestJet
01 Sep - 15 Sep	WestJet
01 Sep - 21 Sep	WestJet
06 Sep - 21 Sep	WestJet
04 Sep - 13 Sep	WestJet
04 Sep - 03 Oct	WestJet
23 Sep - 30 Oct	WestJet
24 Sep - 15 Oct	WestJet
13 Sep - 28 Sep	WestJet
27 Sep - 13 Oct	WestJet
30 Sep - 15 Oct	WestJet
12 Sep - 28 Sep	WestJet
17 Sep - 11 Oct	WestJet
09 Sep - 26 Sep	WestJet
19 Sep - 03 Oct	WestJet
19 Sep - 17 Oct	WestJet

Also check the deals for one-way flights from Waterloo to Seoul in September.

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 Waterloo to Seoul in September from $1140

Return flights