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

Return flights

18 Sep - 20 Sep	IndiGo
11 Sep - 17 Sep	Flynas
12 Sep - 19 Sep	Flynas
10 Sep - 24 Sep	Flynas
10 Sep - 20 Sep	Flynas
10 Sep - 22 Sep	Flynas
16 Sep - 19 Sep	China Southern
05 Sep - 22 Sep	IndiGo
15 Sep - 23 Sep	IndiGo
13 Sep - 20 Sep	Flynas
30 Sep - 15 Oct	Air India
27 Sep - 10 Oct	Flynas
26 Sep - 10 Oct	Flynas
25 Sep - 11 Oct	Flynas
30 Sep - 11 Oct	Air India
24 Sep - 01 Oct	Air India Express
23 Sep - 05 Oct	Air India
26 Sep - 03 Oct	Cathay Pacific
24 Sep - 03 Oct	Air India Express
11 Sep - 04 Oct	Air India

Also check the deals for one-way flights from Riyadh 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 Riyadh to Seoul in September from $485

Return flights