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

Return flights

23 Jul - 30 Aug	China Airlines
24 Jul - 17 Aug	China Airlines
23 Jul - 15 Aug	China Airlines
17 Jul - 05 Aug	China Airlines
04 Jul - 11 Jul	China Airlines
23 Jul - 31 Jul	China Airlines
21 Jul - 25 Jul	China Airlines
31 Jul - 09 Aug	China Airlines
15 Jul - 05 Aug	China Airlines
11 Jul - 25 Jul	China Airlines
12 Jul - 23 Jul	China Airlines
01 Jul - 08 Jul	China Airlines
06 Jul - 25 Jul	Qatar Airways

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

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 Ontario to Seoul in July from 1108€

Return flights