Originally Posted by
irishguy28
That's called cabotage, and it is not allowed by the US. Although US airlines are allowed to make stops and pick up passengers at multiple points in the EU, EU carriers are not allowed to fly between multiple points in the US.
It is allowed within Canada though, RJ does it, although they are not allowed to sell the intra Canada segment. I am pretty sure RJ also had a transborder flight a couple of years ago, DTW-YYZ(or YUL)-AMM, but I do not see it any longer...
One way to Amman | Google Flights