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

Return flights

04 Sep - 23 Sep	Lufthansa
05 Sep - 18 Sep	Lufthansa
04 Sep - 24 Sep	Lufthansa
05 Sep - 22 Sep	Lufthansa
05 Sep - 12 Sep	Air France
04 Sep - 22 Sep	Air France
02 Sep - 09 Sep	Lufthansa
03 Sep - 09 Sep	Lufthansa
02 Sep - 22 Sep	KLM
03 Sep - 22 Sep	Air France
27 Sep - 11 Oct	Emirates

Also check the deals for one-way flights from Seoul to Riga 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 Riga in September from $690

Return flights