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

Return flights

17 Sep - 24 Sep	Norwegian Air Sweden AOC
16 Sep - 18 Sep	Norwegian Air Sweden AOC
17 Sep - 19 Sep	Norwegian Air Sweden AOC
03 Sep - 10 Sep	Norwegian Air Sweden AOC
15 Sep - 18 Sep	Ryanair
15 Sep - 19 Sep	Ryanair
16 Sep - 19 Sep	Norwegian Air Sweden AOC
02 Sep - 09 Sep	Norwegian Air Sweden AOC
02 Sep - 04 Sep	Norwegian Air Sweden AOC
10 Sep - 17 Sep	Norwegian Air Sweden AOC

Also check the deals for one-way flights from Helsinki 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 Helsinki to Budapest in September from 125€

Return flights