The only way from Nürnberg to Alte Veste is by public transit. You should expect to be able to find tickets starting around $2, if you search flights from Lorenzkirche to Fürth Hauptbahnhof. Take Nrnberg U-Bahn from Nürnberg to Alte Veste, it's your best chance!
Nrnberg U-Bahn offers limited service between Alte Veste and Nürnberg.We recommend booking the trip to Alte Veste about one week in advance. Though you might be able to find and book a ticket from Nürnberg the day of, it is best to do this earlier as to be sure you have a seat to Alte Veste. There is usually no need to book these sort of trips from Nürnberg to Alte Veste in advance. Rideshares should be available on demand all hours of the day. Public transportation prices do not fluctuate like flights. Instead, they're either flat rate or priced by distance traveled. If possible, you can book your tickets via an app or alternatively at the station upon arrival.