AirHint found the following cheapest return flights from Dallas (DAL) to Seoul (ICN) in October 2025 (see full year).

Return flights

15 Oct - 30 Oct	Delta
27 Oct - 09 Nov	Delta
20 Oct - 29 Oct	Delta
06 Oct - 27 Oct	Delta
03 Oct - 13 Oct	Delta
04 Oct - 31 Oct	Delta
13 Oct - 20 Oct	Delta
31 Oct - 08 Nov	Korean Air
02 Oct - 08 Nov	Korean Air
05 Oct - 11 Oct	Korean Air
04 Oct - 02 Nov	Korean Air
01 Oct - 15 Nov	Korean Air
05 Oct - 12 Oct	Korean Air
06 Oct - 22 Oct	Korean Air
09 Oct - 03 Nov	Delta
08 Oct - 28 Oct	Korean Air
17 Oct - 16 Nov	KLM

Also check the deals for one-way flights from Dallas to Seoul in October.

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 to Seoul in October from $1148

Return flights