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

Return flights

30 Sep - 14 Oct	Ryanair
24 Sep - 30 Sep	Ryanair
30 Sep - 07 Oct	Ryanair
29 Sep - 13 Oct	easyJet
24 Sep - 29 Sep	Ryanair
30 Sep - 04 Oct	Ryanair
29 Sep - 30 Sep	easyJet
25 Sep - 06 Oct	easyJet
29 Sep - 02 Oct	easyJet
16 Sep - 06 Oct	easyJet
29 Sep - 11 Oct	easyJet
29 Sep - 18 Oct	easyJet
27 Sep - 06 Oct	easyJet
25 Sep - 29 Sep	easyJet
23 Sep - 29 Sep	Ryanair
25 Sep - 30 Sep	easyJet
24 Sep - 25 Sep	Ryanair
22 Sep - 29 Sep	easyJet
27 Sep - 29 Sep	easyJet
24 Sep - 28 Sep	Ryanair

Also check the deals for one-way flights from Amsterdam 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 Amsterdam to Bucharest in September from 138€

Return flights