Quote Originally Posted by spongebue View Post

flassher, you are right. PPBM (Positive Passenger Baggage Match) is a requirement on international flights, and is also often attempted (not an absolute requirement) on US domestic flights.
That surprises me as i worked for Continental for 18 years and never heard that state side PPBM is NOT a requirement...so if a passenger fails to board a domestic flight then the bag stays onboard???? .....interesting. Cheers.