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

Return flights

15 Sep - 18 Sep	easyJet
04 Sep - 15 Sep	Ryanair
13 Sep - 18 Sep	easyJet
02 Sep - 16 Sep	easyJet
15 Sep - 20 Sep	easyJet
25 Sep - 30 Sep	easyJet
09 Sep - 16 Sep	Ryanair
22 Sep - 30 Sep	easyJet
25 Sep - 29 Sep	easyJet
13 Sep - 20 Sep	easyJet
24 Sep - 01 Oct	easyJet
16 Sep - 06 Oct	Ryanair
20 Sep - 11 Oct	easyJet
25 Sep - 08 Oct	easyJet
28 Sep - 27 Oct	easyJet
17 Sep - 05 Oct	easyJet
28 Sep - 03 Oct	easyJet
16 Sep - 05 Oct	Ryanair
27 Sep - 04 Oct	KLM	direct
16 Sep - 05 Oct	KLM	direct

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 167€

Return flights