Cheapest return flights from Bucharest to Warsaw in September from $149

Best time to book flights for Bucharest (OTP) to Warsaw (WAW) flights at AirHint

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

Return flights

01 Sep - 08 Sep Austrian Airlines
18 Sep - 25 Sep Austrian Airlines
01 Sep - 04 Sep SWISS
10 Sep - 14 Sep SWISS
13 Sep - 21 Sep SWISS
22 Sep - 24 Sep Austrian Airlines
10 Sep - 14 Sep LOT direct
18 Sep - 25 Sep LOT direct
01 Sep - 08 Sep LOT direct
13 Sep - 21 Sep LOT direct

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

Skyscanner

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 Warsaw

Cheap car rent in Warsaw