Cheapest return flights from Ontario to Seoul in April from $862

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

Return flights

10 Apr - 25 Apr China Airlines
11 Apr - 25 Apr China Airlines
13 Apr - 25 Apr China Airlines
22 Apr - 29 Apr China Airlines
19 Apr - 26 Apr China Airlines
22 Apr - 28 Apr China Airlines
21 Apr - 28 Apr China Airlines
18 Apr - 26 Apr China Airlines
06 Apr - 28 Apr China Airlines
14 Apr - 24 Apr China Airlines
18 Apr - 15 May China Airlines
23 Apr - 14 May China Airlines
24 Apr - 10 May China Airlines
28 Apr - 22 May China Airlines
22 Apr - 10 May China Airlines
08 Apr - 20 May China Airlines
24 Apr - 08 May China Airlines
21 Apr - 12 May China Airlines
25 Apr - 24 May China Airlines
25 Apr - 31 May China Airlines

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

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