The most convenient option is to book a flight to Nürnberg (Nuremberg). From there, you take the subway line U2 (subway station right in front of the airport entrance) to Nürnberg main station (Hauptbahnhof/Hbf). Trains to Erlangen leave several times per hour. You can buy your train ticket at the ticket machines or at the Railway Service Centre (“DB Reisezentrum”) located on the ground floor in the western side hall. Choose “Erlangen Bahnhof/Bhf” (Erlangen station) as your destination. The train ride takes around 30 minutes. From Erlangen station you can take a taxi or bus to your accommodation. For more information on bus services, see vgn.de/en/.
Besides the subway connection, you can also reach the airport easily using the Nuremberg bus network. The bus stop for lines 30 and 33 is located in front of the departure and arrival terminals. The bus lines 30 and 33 connect the Airport with Erlangen and Fürth, respectively.