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

Return flights

15 Sep - 23 Sep	Aeroitalia
09 Sep - 17 Sep	Wizz Air Malta
08 Sep - 22 Sep	Aeroitalia
22 Sep - 25 Sep	Ryanair
06 Sep - 13 Sep	Wizz Air Malta
17 Sep - 08 Oct	Air France
10 Sep - 10 Oct	Air France
30 Sep - 17 Oct	Air France
22 Sep - 08 Oct	KLM
09 Sep - 20 Sep	Wizz Air Malta
10 Sep - 17 Sep	Wizz Air Malta
29 Sep - 14 Oct	Wizz Air Malta
11 Sep - 19 Sep	Ryanair
05 Sep - 20 Sep	Aeroitalia
10 Sep - 13 Oct	Air France
12 Sep - 25 Sep	Aeroitalia
28 Sep - 14 Oct	Pegasus Airlines
16 Sep - 07 Oct	KLM
18 Sep - 06 Oct	LOT
20 Sep - 05 Oct	LOT

Also check the deals for one-way flights from Bucharest 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 Bucharest to Seoul in September from 516€

Return flights