How is my airfare or train fare price determined if I purchase air through BCT

Generally, the price quoted is from major airports only. Any airport can be used, but in most cases, not always, additional fare collection will be necessary. The airfare or train fare amount is not guaranteed until you pay your trip invoice in full. The invoice must be paid in full in order to secure the airfare price quoted and to avoid increases in taxes and fees. Tickets may be issued once the invoice is paid; thus, any revisions made to the booking after that time will be subject to change fees and airline availability