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

Return flights

12 Sep - 15 Sep	Ryanair
02 Sep - 08 Sep	Ryanair
12 Sep - 19 Sep	Ryanair
15 Sep - 18 Sep	Ryanair
03 Sep - 08 Sep	Ryanair
02 Sep - 07 Sep	Ryanair
17 Sep - 19 Sep	easyJet
01 Sep - 08 Sep	Ryanair
26 Sep - 30 Sep	Ryanair
03 Sep - 07 Sep	Ryanair
28 Sep - 05 Oct	easyJet

Also check the deals for one-way flights from Newcastle 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 Newcastle to Bucharest in September from 103€

Return flights