It depends on where in the US to where in Greenland.
To fly to Greenland from the US, you can book a flight from major US airports to Kangerlussuaq or Nuuk, the two main airports in Greenland. Airlines such as Air Greenland and Icelandair offer flights to Greenland with layovers in Iceland or Denmark. Make sure to check for any travel restrictions or requirements before booking your flight.
A flight from the US to the UK takes about 9 hours.
first class 2 to 4 days
Greenland is not US Territory, but there are a few places on Greenland which is US Soild. For Exampel, the Radar station in the northern part of Greenland.
This flight takes around the 8 hours.
Direct flight across Atlantic 12 hours
flight time from asia to usa is 24 HRS
about 9 hours
14 hours
16 hours
13 hour
go to Google maps and then go to directions and then go to Greenland to us.