America Airlines have round trip airfares travelling from Orlando (MCO) to Frankfurt Germany (FRA) for $500 including taxes and fees. This makes 1 stop in Charlotte each flight.
Travel availability:
Departs MCO: Sept 6 thru Dec 12 (no Saturdays)
Returns: wide availability
Use dates and book it on Orbitz , Priceline or Expedia . Bundling hotel with your air does save money.
Sample attached.