A random search for departure 02 & 03 May,Sat/Sun shows:
OPTION 1: 5hr 00min
GDN - MUC LOT Polish Airlines Flt 5371 Dep 04:50pm 02May,Sat
MUC - FCO LOT Polish Airlines Flt 4785 Dep 08:20pm 02May,Sat
Flight Duration: 3hr 05min; Layover Time: 1hr 55min; Total Trip Time: 5hr 00min.
OPTION 2: 4hr 30min
GDN - CPH SAS Flt 1758 Dep 06:30pm 03May,Sun
CPH - FCO SAS Flt 0681 Dep 08:30pm 03May,sUN
Flight Duration: 3hr 30min; Layover Time: 1hr 00min; Total Trip Time: 4hr 30min.
Approximately a ten hour flight
Chicago, IL (CHI) to Rome (ROM) Shortest Flight Duration: 9 hours 15 mins
approximately an hour
About 11 hours.
About thee hours.
Its about 25 minutes.
about 9 hours
2 hours +
The quickest route is via copenhagen. 3 hours 15 (Depends on connection time). However certain flight times can be much longer. I don't think there is a direct route straight to Gdansk from Amsterdam.
The shortest flight duration from Green Bay to Rome would be around 10 hours.
The flight time is 54 minutes.
The average flight time is 6 and a half hours.