AirHint found the following cheapest return flights from Doha (DOH) to Seoul (ICN) in September 2025 (see full year).

Return flights

09 Sep - 14 Sep	Shenzhen Airlines
22 Sep - 29 Sep	Air India
22 Sep - 28 Sep	Air India
15 Sep - 22 Sep	Air India
08 Sep - 15 Sep	Air India
30 Sep - 17 Oct	SalamAir
23 Sep - 02 Oct	Xiamen Airlines
05 Sep - 12 Sep	China Southern
03 Sep - 11 Sep	China Southern
04 Sep - 11 Sep	China Southern
04 Sep - 12 Sep	China Southern
09 Sep - 16 Sep	Shenzhen Airlines
22 Sep - 02 Oct	Air India
30 Sep - 17 Oct	Qatar Airways	direct
23 Sep - 02 Oct	Qatar Airways	direct

Also check the deals for one-way flights from Doha 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 Doha to Seoul in September from 535€

Return flights