AirHint found the following cheapest return flights from Atlanta (ATL) to Seoul (ICN) in September 2026 (see full year).

Return flights

01 Sep - 15 Sep	Alaska Airlines
06 Sep - 19 Sep	Turkish Airlines
15 Sep - 01 Oct	Alaska Airlines
14 Sep - 28 Sep	Turkish Airlines
15 Sep - 30 Sep	Turkish Airlines
15 Sep - 19 Sep	Alaska Airlines
15 Sep - 31 Oct	Turkish Airlines
20 Sep - 27 Sep	Turkish Airlines
15 Sep - 30 Sep	Delta	direct
15 Sep - 01 Oct	Delta	direct
01 Sep - 15 Sep	Delta	direct
14 Sep - 28 Sep	Delta	direct
15 Sep - 31 Oct	Delta	direct
20 Sep - 27 Sep	Korean Air	direct

Also check the deals for one-way flights from Atlanta 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 Atlanta to Seoul in September from 976€

Return flights