Wrocław Nicolaus Copernicus Airport (WRO) serves a number of international and Polish connections. Many of the flights arriving in Wrocław are operated via Frankfurt, Munich or Warsaw. To find convenient flights try visiting websites of the airlines operating in Wrocław:LOT, Lufthansa, SAS, Eurowings, Ryanair, Wizzair, or use a flight search engine such as Skyscanner.
Taxis are available from the airport. The journey to the city centre will cost around 50-60 PLN (which is about 15 EURO) and will take between 15 and 45 minutes depending on the traffic. Some telephone numbers to taxi companies can be found at this page. There is also the bus line 106 which connects the airport to the Wrocław main train station in the city center.