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

Return flights

12 Aug - 19 Aug	T'way Air	direct
05 Aug - 19 Aug	KLM
07 Aug - 21 Aug	Air France
12 Aug - 28 Aug	T'way Air	direct
28 Aug - 11 Sep	T'way Air	direct
05 Aug - 19 Aug	T'way Air	direct
19 Aug - 26 Aug	T'way Air	direct
05 Aug - 26 Aug	T'way Air	direct
19 Aug - 28 Aug	T'way Air	direct
17 Aug - 24 Aug	LOT
13 Aug - 19 Aug	LOT
26 Aug - 03 Sep	China Southern
29 Aug - 05 Sep	T'way Air
30 Aug - 01 Sep	LOT
28 Aug - 02 Sep	LOT
26 Aug - 06 Sep	LOT
28 Aug - 01 Sep	LOT
30 Aug - 02 Sep	LOT
28 Aug - 06 Sep	LOT
26 Aug - 02 Sep	Emirates

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

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 Zagreb in August from 557€

Return flights