Lufthansa and Alliance partners has flights from Dallas (DFW) to Frankfurt or Munich (FRA/MUC) for $421-$463. Flights January to March. 5-day minimum stay required. Flight may operate as a United/Air Canada code-share.
Note: Flights to Frankfurt are NONSTOP. Flights to Munich have a stop.
Note: Fare allows for a free carry-on bag, but checked bags will cost about +$60 each-way.