Cheapest return ORD–ICN flights, April

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

Return flights

28 Apr - 12 May Spirit Airlines
22 Apr - 05 May Cathay Pacific
23 Apr - 08 May Cathay Pacific
28 Apr - 11 May Spirit Airlines
20 Apr - 08 May Cathay Pacific
29 Apr - 14 May United
30 Apr - 07 May United
30 Apr - 16 May Spirit Airlines
22 Apr - 29 Apr Cathay Pacific
21 Apr - 28 Apr United
20 Apr - 23 Apr United
25 Apr - 29 Apr United
19 Apr - 23 Apr United
28 Apr - 12 May Delta direct
30 Apr - 16 May Korean Air direct
20 Apr - 23 Apr Delta direct
19 Apr - 23 Apr Korean Air direct
21 Apr - 28 Apr Korean Air direct
25 Apr - 29 Apr Korean Air direct

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

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