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

Return flights

26 Aug - 13 Sep	Jetstar
30 Aug - 04 Sep	Jetstar
30 Aug - 06 Sep	Jetstar
19 Aug - 23 Aug	Jetstar
30 Aug - 07 Sep	Jetstar
19 Aug - 27 Aug	Jetstar
19 Aug - 26 Aug	Jetstar
21 Aug - 28 Aug	Jetstar
19 Aug - 04 Sep	Cathay Pacific
18 Aug - 08 Sep	Cathay Pacific
16 Aug - 21 Aug	Jetstar
21 Aug - 27 Aug	Jetstar
29 Aug - 08 Sep	Cathay Pacific
27 Aug - 03 Sep	Cathay Pacific
28 Aug - 04 Sep	Cathay Pacific
28 Aug - 02 Sep	Cathay Pacific
14 Aug - 23 Aug	Jetstar
14 Aug - 19 Aug	Jetstar
23 Aug - 30 Aug	Jetstar
16 Aug - 28 Aug	Jetstar

Also check the deals for one-way flights from Seoul to Auckland 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 Auckland in August from 510€

Return flights