Cheapest return flights from Warsaw to Bucharest in September from $159

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

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

Return flights

23 Sep - 29 Sep Austrian Airlines
09 Sep - 16 Sep Austrian Airlines
09 Sep - 29 Sep Austrian Airlines
05 Sep - 08 Sep Austrian Airlines
05 Sep - 09 Sep Austrian Airlines
02 Sep - 08 Sep Austrian Airlines
18 Sep - 22 Sep Austrian Airlines
12 Sep - 15 Sep Austrian Airlines
24 Sep - 28 Sep SWISS
03 Sep - 09 Sep Lufthansa

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

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