AirHint found the following cheapest return flights from Duesseldorf (DUS) to Bucharest (OTP) in December 2025 (see full year).

Return flights

12 Dec - 14 Dec	Ryanair
16 Dec - 26 Dec	Eurowings	direct
10 Dec - 15 Dec	easyJet
12 Dec - 14 Dec	Eurowings	direct
16 Dec - 23 Dec	easyJet
15 Dec - 18 Dec	Ryanair
09 Dec - 11 Dec	HiSky Europe
07 Dec - 12 Dec	Eurowings
10 Dec - 12 Dec	Air Serbia
04 Dec - 07 Dec	Air Serbia
30 Dec - 05 Jan	Eurowings	direct
15 Dec - 05 Jan	Ryanair
28 Dec - 05 Jan	Eurowings	direct
27 Dec - 08 Jan	Lufthansa
31 Dec - 05 Jan	Air Serbia
26 Dec - 05 Jan	Eurowings	direct
29 Dec - 01 Jan	Lufthansa
28 Dec - 01 Jan	Lufthansa
30 Dec - 02 Jan	Eurowings	direct
26 Dec - 02 Jan	LOT

Also check the deals for one-way flights from Duesseldorf to Bucharest in December.

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 Duesseldorf to Bucharest in December from $132

Return flights