AirHint found the following cheapest return flights from Dallas-Fort Worth (DFW) to Seoul (ICN) in September 2025 (see full year).

Return flights

04 Sep - 15 Sep	Cathay Pacific
01 Sep - 23 Sep	Cathay Pacific
23 Sep - 28 Oct	Cathay Pacific
01 Sep - 11 Sep	Cathay Pacific
04 Sep - 11 Sep	Cathay Pacific
01 Sep - 14 Sep	Cathay Pacific
01 Sep - 12 Sep	Cathay Pacific
13 Sep - 11 Oct	Cathay Pacific
27 Sep - 13 Oct	Cathay Pacific
11 Sep - 15 Sep	Cathay Pacific
12 Sep - 15 Sep	Hawaiian Airlines
18 Sep - 18 Oct	United
15 Sep - 05 Oct	United
26 Sep - 13 Oct	United
28 Sep - 13 Oct	United
29 Sep - 13 Oct	United
01 Sep - 06 Sep	United
17 Sep - 20 Sep	United
26 Sep - 05 Oct	United
19 Sep - 05 Oct	Alaska Airlines

Also check the deals for one-way flights from Dallas-Fort Worth to Seoul in September.

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 Dallas-Fort Worth to Seoul in September from $725

Return flights