Cheapest return flights from Ontario to Seoul in August from $939

AirHint found the following cheapest return flights from Ontario (ONT) to Seoul (ICN) in August 2025 (see full year).

Return flights

21 Aug - 25 Aug China Airlines
28 Aug - 08 Sep China Airlines
26 Aug - 08 Sep China Airlines
04 Aug - 15 Sep China Airlines
12 Aug - 24 Aug China Airlines
18 Aug - 31 Aug China Airlines
28 Aug - 14 Sep China Airlines
16 Aug - 25 Aug China Airlines
03 Aug - 28 Aug China Airlines
30 Aug - 29 Sep China Airlines
27 Aug - 12 Sep China Airlines
30 Aug - 15 Sep China Airlines
28 Aug - 02 Sep China Airlines
13 Aug - 28 Aug China Airlines
27 Aug - 05 Sep China Airlines
13 Aug - 03 Sep China Airlines
16 Aug - 24 Aug China Airlines
16 Aug - 27 Aug China Airlines
18 Aug - 29 Aug China Airlines
08 Aug - 24 Aug China Airlines

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

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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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