The Poznań Airport is relatively small and the cost of the ticket can be much higher than that to fly to Warsaw or Berlin. About the airport information, location, and which airlines are flying there, please look at Poznań Ławica Airport. The airport is located in the very west part of the city (Ławica district) about 7 km from the center. For more accurate map of Poznań look at Poznań map or another Poznań map. See also a map of a neighbourhood of Będlewo.
Before buying a plane ticket, it is a good idea to check the difference in price between flying to Poznań and to Warsaw or Berlin. However, there are many the so-called cheap airlines (e.g., Ryanair, Wizz Air, Sky Europe, Easy Jet, Dauair, Centralwings) between European cities (including Poznań) that you can fly for just few euros. The situation with cheap airlines is changing continuously. Moreover, to get a really cheap ticket, you have to buy it well in advance (at least one month ahead).
When you come to Poznań airport, then please refer to the section How to get from Poznań to Będlewo?