Dortmund Airport is a minor international airport located 10 km (6.2 mi) east of Dortmund, North Rhine-Westphalia. It serves the eastern Rhine-Ruhr area, the largest urban agglomeration in Germany, and is mainly used for low-cost and leisure charter flights. In 2020 the airport served 1,220,624 passengers. The nearest major international airport is Düsseldorf Airport approx. 70 km (43 mi) to the southwest.

Dortmund is the third-largest city in North Rhine-Westphalia, after Cologne and Düsseldorf, and the ninth-largest city in Germany. With a population of 612,065 inhabitants, it is the largest city of the Ruhr as well as the largest city of Westphalia. It lies on the Emscher and Ruhr rivers in the Rhine-Ruhr Metropolitan Region, the second biggest metropolitan region by GDP in the European Union, and is considered the administrative, commercial, and cultural centre of the eastern Ruhr. Dortmund is the second-largest city in the Low German dialect area, after Hamburg.