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

Return flights

29 Sep - 10 Oct	flyadeal
30 Sep - 10 Oct	flyadeal
24 Sep - 10 Oct	IndiGo
27 Sep - 12 Oct	Flynas
30 Sep - 07 Oct	flyadeal
28 Sep - 26 Oct	IndiGo
29 Sep - 06 Oct	Flynas
24 Sep - 09 Oct	IndiGo
22 Sep - 25 Sep	IndiGo
22 Sep - 30 Sep	IndiGo
23 Sep - 27 Sep	Flynas
23 Sep - 24 Sep	Flynas
23 Sep - 29 Sep	Flynas
26 Sep - 30 Sep	flyadeal
23 Sep - 04 Oct	SalamAir
23 Sep - 07 Oct	Emirates

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 409€

Return flights