For example, if you purchase a coach or business ... "People are not always aware that changes (and even cancellations) to airline tickets can be made with most airlines within 24 hours of booking ...

Southwest will start charging customers to check bags, launch basic economy tickets in a bid to drive up revenue.

Check with your airline first to be sure. If your flights are booked on separate tickets (for example, a Delta flight followed by a United flight, where you would check in separately for each ...