Cheapest return flights from Ontario to Seoul in August from $855

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

Return flights

20 Aug - 29 Aug China Airlines
01 Aug - 23 Aug China Airlines
02 Aug - 23 Aug China Airlines
08 Aug - 23 Aug China Airlines
31 Aug - 06 Sep China Airlines
04 Aug - 10 Sep China Airlines
22 Aug - 03 Sep China Airlines
30 Aug - 07 Sep China Airlines
29 Aug - 06 Sep China Airlines
26 Aug - 22 Sep China Airlines
28 Aug - 19 Sep China Airlines
26 Aug - 04 Sep China Airlines
03 Aug - 24 Aug China Airlines
28 Aug - 16 Sep China Airlines
28 Aug - 04 Sep China Airlines
13 Aug - 17 Aug China Airlines
12 Aug - 17 Aug China Airlines
10 Aug - 22 Aug China Airlines
03 Aug - 17 Aug China Airlines
04 Aug - 20 Aug China Airlines

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

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