Delta, and Virgin Atlantic have round-trip flights from Austin (AUS) to Munich (MUC) for $573-$584 with a connection. Flights October to March. No Weekends. Departures on Monday, Tuesday, Wednesday, and Thursday. (Holiday dates were removed by Delta)
A Carry-on bag and also a personal item is allowed for free on Delta. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate.
Click for more details and booking links Cheap Flights: Austin to Munich $573-$584 r/t [October-March] (No Holidays) – Delta / Virgin Atlantic