The cheapest flight to Dortmund you can get by boooking 25 days before departure.
The most popular airlines on the route Belgrade - Dortmund: Wizz Air (W6), Lufthansa (LH), LOT (LO).
The cheapest flights you can book on the route Nikola Tesla (BEG) - Dortmund Airport (DTM).
Direct flights last about 2h 10min.
Direct flights available 3 days a week - tuesday, thursday, saturday.
Direct flights: Wizz Air (W6).