AirHint found the following cheapest return flights from Bucharest (BBU) to Athens (ATH) in September 2025 (see full year).

Return flights

20 Sep - 27 Sep	Wizz Air
15 Sep - 23 Sep	Wizz Air
14 Sep - 23 Sep	Wizz Air
29 Sep - 03 Oct	Wizz Air
24 Sep - 28 Sep	Wizz Air
17 Sep - 23 Sep	Wizz Air Malta
15 Sep - 22 Sep	Wizz Air
18 Sep - 22 Sep	Wizz Air Malta
09 Sep - 12 Sep	Wizz Air
08 Sep - 12 Sep	Wizz Air
17 Sep - 19 Sep	Wizz Air

Also check the deals for one-way flights from Bucharest to Athens 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.

Book a cheap hotel in Athens

Cheap car rent in Athens

Cheapest return flights from Bucharest to Athens in September from $140

Return flights