What is an Airline Base Fare? - TripSavvy
Federal Excise Tax: A federal excise tax of 7.5% is charged on airfare. Passenger Facility Charges (PFCs) (ranging from $4.50 to $18) go toward the upkeep and maintenance of airports and is set by Federal law. Up to four PSCs can apply to each ticketed trip and a maximum of two PFCs can be applied per each one-way trip.