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

Return flights

28 May - 04 Jun	WestJet
21 May - 30 Jun	WestJet
30 May - 26 Jun	WestJet
25 May - 12 Jun	WestJet
03 May - 10 May	WestJet
09 May - 25 May	WestJet
17 May - 31 May	WestJet
03 May - 31 May	WestJet
27 May - 31 May	WestJet
03 May - 24 May	WestJet
24 May - 30 May	WestJet
01 May - 21 May	WestJet
10 May - 23 May	WestJet
10 May - 24 May	WestJet
21 May - 06 Jun	WestJet
29 May - 19 Jun	WestJet
24 May - 20 Jun	WestJet
31 May - 21 Jun	WestJet
23 May - 07 Jun	WestJet
24 May - 27 Jun	WestJet

Also check the deals for one-way flights from Waterloo 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 Waterloo to Seoul in May from $823

Return flights