Originally Posted by
HWGeeks
Like others have said it just means the flight number continues as or internatonal flight or the domestic flight you are on is a continuation of an international flight.
I have been in X on MD88's, 767s and a 757 once.
OT but I'm adding this to my friend's list who is noting how many international flights (DL & otherwise) originate in Europe/Asia, connect in airline's hub w ship change, then continue to MCO. She calls it the Goofy effect. LAS/LAX also trending though not as often as MCO it seems.