Currently, the cheapest month to rent a car at Cologne Köln/Bonn Airport is September. The most expensive time to rent a car is May. The cheapest prices for each month are shown above, but prices will vary based on availability, how far out you book your rental car, and of course, car type.
Booking in advance not only ensures a better chance of getting your vehicle of choice, it can save you up to 7% on your car rental. For a below average price at Cologne Köln/Bonn Airport, Cheapflights recommends booking your car rental at least 33 days in advance.
Yes, renting a vehicle at Cologne Köln/Bonn Airport for a month is certainly possible.