AirHint found the following cheapest return flights from Seoul (GMP) to Danang (DAD) in September 2025 (see full year).

Return flights

22 Sep - 24 Sep	Eastar Jet
23 Sep - 27 Sep	T'way Air
22 Sep - 25 Sep	Eastar Jet
20 Sep - 24 Sep	Jeju Air
24 Sep - 01 Oct	Jeju Air
28 Sep - 01 Oct	T'way Air
22 Sep - 29 Sep	Korean Air
24 Sep - 27 Sep	Eastar Jet
24 Sep - 16 Oct	Jeju Air
24 Sep - 28 Sep	Jeju Air
24 Sep - 26 Sep	T'way Air
28 Sep - 02 Oct	Air Busan
24 Sep - 03 Oct	Jeju Air
27 Sep - 02 Oct	Eastar Jet
27 Sep - 29 Sep	Eastar Jet
20 Sep - 01 Oct	Jeju Air
20 Sep - 23 Sep	Jeju Air
23 Sep - 22 Oct	Jeju Air
26 Sep - 01 Oct	Jeju Air
27 Sep - 03 Oct	Jeju Air

Also check the deals for one-way flights from Seoul to Danang 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 Seoul to Danang in September from $178

Return flights