AirHint found the following cheapest return flights from Waterloo (YKF) to Seoul (ICN) in September 2025 (see full year).

Return flights

03 Sep - 16 Oct	WestJet
12 Sep - 09 Oct	WestJet
20 Sep - 19 Oct	WestJet
12 Sep - 18 Sep	WestJet
03 Sep - 15 Sep	WestJet
19 Sep - 17 Oct	WestJet
03 Sep - 06 Sep	WestJet
10 Sep - 14 Sep	WestJet
05 Sep - 20 Sep	WestJet
17 Sep - 16 Oct	WestJet
24 Sep - 10 Oct	WestJet
06 Sep - 13 Sep	WestJet
29 Sep - 19 Oct	WestJet
15 Sep - 19 Sep	WestJet
11 Sep - 18 Sep	WestJet
11 Sep - 20 Sep	WestJet
11 Sep - 14 Sep	WestJet
24 Sep - 06 Oct	WestJet
22 Sep - 24 Oct	WestJet
26 Sep - 03 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 702€

Return flights