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

Return flights

30 Sep - 02 Oct	Ryanair
17 Sep - 29 Sep	Ryanair
18 Sep - 30 Sep	Ryanair
16 Sep - 01 Oct	Ryanair
26 Sep - 30 Sep	Ryanair
26 Sep - 01 Oct	Ryanair
17 Sep - 30 Sep	Ryanair
17 Sep - 01 Oct	Ryanair
26 Sep - 02 Oct	Ryanair
18 Sep - 29 Sep	Ryanair
28 Sep - 30 Sep	Ryanair
18 Sep - 01 Oct	Ryanair
28 Sep - 01 Oct	Ryanair
16 Sep - 19 Sep	Ryanair
19 Sep - 22 Sep	Aeroitalia
28 Sep - 02 Oct	Ryanair
27 Sep - 30 Sep	Aeroitalia
27 Sep - 01 Oct	Aeroitalia
28 Sep - 03 Oct	Ryanair
17 Sep - 21 Sep	Ryanair

Also check the deals for one-way flights from Cagliari 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 Cagliari to Bucharest in September from $131

Return flights