Cheapest return ORD–ICN flights, May

AirHint found the following cheapest return flights from Chicago (ORD) to Seoul (ICN) in May 2026 (see full year).

Return flights

03 May - 12 May Spirit Airlines
02 May - 18 May Spirit Airlines
13 May - 27 May Frontier Airlines
05 May - 19 May Spirit Airlines
01 May - 10 May Frontier Airlines
02 May - 06 Jun Spirit Airlines
13 May - 02 Jun Frontier Airlines
15 May - 31 May Frontier Airlines
11 May - 25 May Frontier Airlines
15 May - 24 May Frontier Airlines
10 May - 07 Jun Frontier Airlines
06 May - 20 May Frontier Airlines
15 May - 28 May Frontier Airlines
27 May - 02 Jun WestJet
30 May - 06 Jun Frontier Airlines
10 May - 06 Jun Frontier Airlines
27 May - 17 Jun WestJet
29 May - 14 Jun WestJet
30 May - 07 Jun Alaska Airlines
15 May - 13 Jun Frontier Airlines

Also check the deals for one-way flights from Chicago to Seoul in May.

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