Cheapest return flights from Helsinki to Bucharest in September from $151

Best time to book flights for Helsinki (HEL) to Bucharest (OTP) flights at AirHint

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

Return flights

01 Sep - 12 Sep Norwegian Air Sweden AOC direct
15 Sep - 29 Sep Norwegian Air Sweden AOC direct
01 Sep - 15 Sep Norwegian Air Sweden AOC direct
01 Sep - 05 Sep Norwegian Air Sweden AOC direct
01 Sep - 19 Sep Norwegian Air Sweden AOC direct
15 Sep - 19 Sep Norwegian Air Sweden AOC direct
01 Sep - 08 Sep Norwegian Air Sweden AOC direct
01 Sep - 18 Sep Norwegian Air Sweden AOC
15 Sep - 18 Sep Norwegian Air Sweden AOC
01 Sep - 11 Sep Norwegian Air Sweden AOC
26 Sep - 10 Oct Norwegian Air Sweden AOC direct
26 Sep - 13 Oct Norwegian Air Sweden AOC direct
26 Sep - 09 Oct Norwegian Air Sweden AOC
25 Sep - 10 Oct Norwegian Air Sweden AOC
25 Sep - 13 Oct Norwegian Air Sweden AOC
25 Sep - 09 Oct Norwegian Air Sweden AOC
26 Sep - 06 Oct Norwegian Air Sweden AOC direct
25 Sep - 06 Oct Norwegian Air Sweden AOC

Also check the deals for one-way flights from Helsinki to Bucharest in September.

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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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