I was booking some travel for employees for XOJO.CONNECT and found this flight from Frankfurt to Nashville for $467.... seems like a really good deal! Check it out on Google Flights
The rate is also the same if you stay until Sunday. If you can get to Frankfurt relatively inexpensively, this might be an option for you to come to XOJO.CONNECT, just wanted to pass it along!
UPDATED: Actually there is another option for the same price with only one stop on the departing flight - here