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

Return flights

08 Sep - 17 Sep	Wizz Air Malta
01 Sep - 10 Sep	Wizz Air Malta
07 Sep - 15 Sep	Ryanair
12 Sep - 14 Sep	Wizz Air Malta
04 Sep - 14 Sep	Air France
06 Sep - 24 Sep	Ryanair
11 Sep - 16 Sep	TAROM
18 Sep - 10 Oct	KLM
12 Sep - 16 Sep	Air France
10 Sep - 17 Sep	Air France
02 Sep - 16 Sep	SWISS

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.

Book a cheap hotel in Seoul

Cheap car rent in Seoul

Cheapest return flights from Bucharest to Seoul in September from $712

Return flights