Cheapest return flights from Washington to Seoul in April from $874

AirHint found the following cheapest return flights from Washington (IAD) to Seoul (GMP) in April 2026 (see full year).

Return flights

07 Apr - 20 Apr Air China
21 Apr - 18 May Air China
21 Apr - 11 May Air China
21 Apr - 12 May Air China
21 Apr - 10 May ANA
20 Apr - 11 May ANA
27 Apr - 11 May ANA
27 Apr - 18 May ANA
21 Apr - 13 May ANA
06 Apr - 04 May ANA
19 Apr - 19 May ANA
14 Apr - 25 Apr ANA
07 Apr - 14 Apr ANA
08 Apr - 17 Apr ANA
09 Apr - 17 Apr ANA
01 Apr - 07 Apr ANA
10 Apr - 18 Apr ANA
04 Apr - 24 Apr ANA
11 Apr - 18 Apr ANA
02 Apr - 09 Apr ANA

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

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