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

Return flights

16 Sep - 01 Oct	easyJet
10 Sep - 01 Oct	easyJet
12 Sep - 15 Sep	HiSky Europe
09 Sep - 18 Sep	easyJet
10 Sep - 18 Sep	easyJet
29 Sep - 30 Sep	HiSky Europe
30 Sep - 01 Oct	easyJet
13 Sep - 15 Sep	easyJet
16 Sep - 23 Sep	easyJet
12 Sep - 20 Sep	HiSky Europe
01 Sep - 15 Sep	HiSky Europe
16 Sep - 22 Sep	easyJet
18 Sep - 22 Sep	easyJet
22 Sep - 31 Oct	HiSky Europe	direct
16 Sep - 01 Oct	Air France	direct
10 Sep - 01 Oct	Air France	direct
30 Sep - 01 Oct	Air France	direct

Also check the deals for one-way flights from Paris to Bucharest 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 Paris to Bucharest in September from $138

Return flights