A few days ago I was flying from Munich to Chicago, the flight arrived about 20-25 minutes late, at some point, the pilot suddenly turned in completely the opposite direction as we were approaching Chicago, they then circled around, I was able to take this video (uploaded as a .gif) https://imgur.com/a/xA8Pfyn
I had to miss my next flight due to the delayed arrival and the flight they then scheduled me on was delayed twice in that day. Now I'm asking out of curiosity about what would have caused the pilot to take such flight path.
As for flight details, Flight No: Lufthansa 953 and Flight Time: July 7th, 11:55 am from Munich, Germany (MUC-Franz Josef Strauss Intl.) to Chicago, IL, United States (ORD-O'Hare Intl.)