Cheapest return flights from Ontario to Seoul in May from $854

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

Return flights

07 May - 25 May China Airlines
14 May - 24 May China Airlines
14 May - 26 May China Airlines
20 May - 31 May China Airlines
07 May - 18 May China Airlines
18 May - 31 May China Airlines
16 May - 31 May China Airlines
06 May - 19 May China Airlines
13 May - 29 May China Airlines
13 May - 19 May China Airlines
18 May - 01 Jun China Airlines
19 May - 05 Jun China Airlines
20 May - 11 Jun China Airlines
18 May - 03 Jun China Airlines
06 May - 03 Jun China Airlines
18 May - 23 Jun China Airlines
20 May - 04 Jun China Airlines
18 May - 05 Jun China Airlines
19 May - 01 Jun China Airlines
07 May - 09 Jun China Airlines

Also check the deals for one-way flights from Ontario to Seoul in May.

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