I was looking at the flight path for [UA106 from IAD to MUC](http://flightaware.com/live/flight/UAL106/history/20160525/2140Z/KIAD/EDDM) and noticed this odd pattern. Why would it do this? I understand that there are [airways that most all flights follow](http://aviation.stackexchange.com/questions/11506/why-do-pilots-use-airways-instead-of-just-flying-direct-every-time), but this path makes two less than 90 degree turns. Wouldn't it be simpler to go straight to the Belgium point rather than go to Poland, then back to Belgium, then back again to Munich?

[![flight path][1]][1]


  [1]: https://i.sstatic.net/02Q4H.png