The Cologne Bonn Airport is the seventh-largest airport in Germany with over 10 million passengers a year. The airport is the European hub for logistics company UPS. The airport was initially only used for military flights by the German Luftwaffe in WWII. After the war the airport was opened for civilian use and new runways and passenger terminals were constructed. The airport quickly anticipated the rise of low-cost airlines in the 1990s and both Germanwings and TUIfly made the airport their hub, easyJet, Wizz Air and Ryanair followed later.
Cologne Bonn Airport has two main runways and two passenger terminals. Terminal 1 is the older one, build in the 1970s but refurbished in 2004. This terminal is mainly used by Eurowings and Germanwings as well as Lufthansa and Austrian Airlines. Terminal 2 opened in 2000 and is used by Air Berlin, KLM, Ryanair and others.
It is located exactly between Cologne, the fourth-largest city in Germany and Bonn, the former capital of West-Germany: 15 km southeast of Cologne and 16 km northeast of Bonn.
The airport has its own railway station which is directly reachable from both terminals.
Local S-Bahn trains depart for both Cologne and Bonn central stations several times an hour. One-way ticket is 2.80 euro and travel time is about 20 minutes.
There are also Airport Express buses departing from the airport to both Cologne and Bonn. It takes about half an hour to the central station, departures are every half hour (less on weekends) but is with 7 euro for one-way ticket a bit expensive.
See for tickets and schedule: trains: koeln-bonn-airport.de .
A taxi would cost about 35 euro to Cologne and 45 euro to Bonn.
All prices quoted here were found in July 2017