The narrow slot situation at the neighbouring airports (Dusseldorf and Cologne/Bonn) is a real challenge, especially during the holiday season. The demand for transport significantly exceeds capacity and occasionally long delays are the consequence.
This is where Dortmund Airport comes in as a real alternative. As an airport that is not run on the basis of slots there are no restrictions in Dortmund which could affect the punctuality of your flight.
As such, the airport is able to accommodate your flights without any restriction and provide an attentive and courteous handling service. This does not just save money, but it also saves time and nerves.