AirHint found the following cheapest return flights from Washington (DCA) to Seoul (ICN) in March 2026 (see full year).

Return flights

04 Mar - 11 Mar	Hawaiian Airlines
19 Mar - 12 Apr	Hawaiian Airlines
26 Mar - 12 Apr	Hawaiian Airlines
25 Mar - 13 Apr	Air Canada
25 Mar - 14 Apr	Air Canada
25 Mar - 15 Apr	Air Canada
05 Mar - 17 Mar	Hawaiian Airlines
29 Mar - 10 Apr	Air Canada
10 Mar - 11 Apr	Air Canada
13 Mar - 21 Mar	Hawaiian Airlines
26 Mar - 13 Apr	Hawaiian Airlines
27 Mar - 15 Apr	Air Canada
26 Mar - 15 Apr	Hawaiian Airlines
16 Mar - 22 Mar	Air Canada
10 Mar - 31 Mar	Delta
06 Mar - 16 Mar	Emirates
06 Mar - 17 Mar	Emirates
19 Mar - 29 Mar	Emirates

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

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 Washington to Seoul in March from 920€

Return flights