FWIW, I second this as well. I used to travel A LOT for work, and being happily married I never would have hit on someone like this on a plane or in an airport. My main focus was missing my wife and getting home.
While I think it's a positive towards you and could be conceived complimentary, this particular guy still seems suspect in my book.
Having said that, regardless of motive, I've never known anyone to compliment someone if they didn't find them attractive, so I say good for you and enjoy the attention, even if it's just for the moment!
Me:36 W:30 M:2.75 T:7 BD: 4/2015 ILYBNILWY: 5/2015 W Moved Out: 5/2015 W filed for D: 7/2015