Cheapest return flights from Ontario (ONT) to Seoul (ICN), October

20 dates in October, from $ 942. Book in one tap, or check whether to buy now or wait.

One-wayReturn
Dates, airline, and price
Dates Airline Price
30 Oct 9 Nov Frontier Airlines
26 Oct 6 Nov Frontier Airlines
28 Oct 9 Nov Frontier Airlines
25 Oct 29 Oct Korean Air
25 Oct 28 Oct Korean Air
21 Oct 4 Nov Korean Air
19 Oct 22 Oct Korean Air
20 Oct 26 Nov Korean Air
18 Oct 2 Nov Korean Air
18 Oct 27 Oct Korean Air
25 Oct 5 Nov Korean Air
20 Oct 27 Oct Korean Air
19 Oct 27 Oct Korean Air
28 Oct 4 Nov Korean Air
25 Oct 17 Nov Korean Air
27 Oct 24 Nov Korean Air
20 Oct 22 Oct Korean Air
26 Oct 29 Oct Frontier Airlines
21 Oct 25 Oct Korean Air
25 Oct 30 Oct Korean Air
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Updated Oct 15, 2026.

About these fares

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