Many airlines have adopted fees for coach passengers to check baggage. As time goes on, more carriers are expected to follow suit in an effort to offset the rising cost of fuel.
In many cases, exceptions are made for passengers who have achieved a certain status in the airline's frequent flier program. Policies vary from airline to airline, so travelers are advised to check with their Azumano agent or individual airline(s) to obtain specifics. For your convenience, listed below are links to the current individual policies for a number of airlines.