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

Return flights

30 Sep - 05 Oct	Wizz Air Malta
03 Sep - 10 Sep	Wizz Air
25 Sep - 11 Oct	Wizz Air Malta
22 Sep - 29 Sep	Wizz Air
23 Sep - 25 Sep	Wizz Air Malta
24 Sep - 26 Sep	Wizz Air
22 Sep - 26 Sep	Wizz Air
15 Sep - 27 Sep	Wizz Air
15 Sep - 22 Sep	Wizz Air
24 Sep - 10 Oct	Wizz Air
15 Sep - 23 Sep	Wizz Air
29 Sep - 03 Oct	Wizz Air
03 Sep - 12 Sep	Wizz Air
08 Sep - 12 Sep	Wizz Air
29 Sep - 01 Oct	Wizz Air

Also check the deals for one-way flights from Bucharest to Lisbon 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 Bucharest to Lisbon in September from 174€

Return flights