Cheapest return flights from Washington (DCA) to Seoul (ICN), September

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
01 Sep 10 Sep Frontier Airlines
08 Sep 13 Oct jetBlue
04 Sep 12 Sep Frontier Airlines
20 Sep 30 Sep Frontier Airlines
13 Sep 21 Sep Frontier Airlines
05 Sep 15 Sep Frontier Airlines
07 Sep 18 Sep jetBlue
10 Sep 15 Sep Frontier Airlines
23 Sep 09 Oct jetBlue
18 Sep 22 Sep Frontier Airlines
21 Sep 25 Sep Frontier Airlines
07 Sep 28 Sep jetBlue
22 Sep 22 Oct Emirates
15 Sep 03 Oct Emirates
27 Sep 04 Oct Emirates
Powered by

deals for one-way flights from Washington to Seoul in September.

Book a cheap hotel in Seoul

Cheap car rent in Incheon Intl

Updated Jul 9, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

Feel free to contact us with any feedback or request another flight research.