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

Return flights

10 Sep - 16 Sep	Lufthansa
02 Sep - 16 Sep	Lufthansa
02 Sep - 09 Sep	Lufthansa
04 Sep - 09 Sep	Lufthansa
09 Sep - 11 Sep	T'way Air	direct
09 Sep - 16 Sep	T'way Air	direct
20 Sep - 27 Sep	China Eastern
03 Sep - 07 Sep	Lufthansa
06 Sep - 13 Sep	China Eastern
17 Sep - 22 Sep	LOT
22 Sep - 04 Oct	LOT
18 Sep - 02 Oct	China Eastern
23 Sep - 02 Oct	T'way Air	direct
23 Sep - 04 Oct	LOT
18 Sep - 02 Oct	T'way Air	direct
25 Sep - 04 Oct	LOT
20 Sep - 02 Oct	T'way Air	direct
27 Sep - 04 Oct	China Eastern
25 Sep - 21 Oct	T'way Air	direct
23 Sep - 04 Oct	T'way Air	direct

Also check the deals for one-way flights from Seoul to Zagreb 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 Zagreb

Cheap car rent in Zagreb

Cheapest return flights from Seoul to Zagreb in September from 558€

Return flights