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

Return flights

07 Sep - 12 Sep	Air China
07 Sep - 11 Sep	Air China
16 Sep - 19 Sep	Air China
16 Sep - 18 Sep	Air China
07 Sep - 15 Sep	Air China
16 Sep - 24 Sep	Air China
03 Sep - 08 Sep	Air China
16 Sep - 22 Sep	Air China
17 Sep - 24 Sep	Air China
16 Sep - 21 Sep	Air China
14 Sep - 03 Oct	Air China
21 Sep - 17 Oct	Air China
01 Sep - 03 Oct	Emirates
19 Sep - 03 Oct	Emirates
16 Sep - 06 Oct	Air China
20 Sep - 25 Oct	LOT
15 Sep - 03 Oct	Emirates
11 Sep - 14 Oct	Emirates
04 Sep - 14 Oct	Emirates
14 Sep - 04 Oct	Qatar Airways

Also check the deals for one-way flights from Seoul to Budapest 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 Seoul to Budapest in September from 514€

Return flights