If he boss missed a pay check without coming to you first and explaining the situation....clean out yer desk and find another job!
If the boss fellah is on the up and up...he will be very open with the hired help as he needs them to stay in business....if he intends to stay in business.
Flying for free never works out!
The business (trade...demand...flights) will go to some one if not the current firm....be with them when they do and not the old place where they leave.