Both American And United Airlines have roundtrip airfares travelling from Minneapolis MN (MSP) and Munich Germany (MUC) for $470 including taxes and fees. There’s actually more United flights than American. This makes 1 stop.
Travel Availability:
Departs: April 26, 27, 30; May 1, 2, 3
Returns: May 3-10
Use dates and book it on Priceline . Google flights says this fare will likely increase 17% in 7 hrs.
Sample travel itinerary below.