Airfare refers to the cost of travelling by air. However, there are other terms that can be used interchangeably with this word. For instance, the term "ticket price" refers to the amount paid to purchase a ticket for a flight. "Flight cost" is another synonym for airfare and is used to describe the total amount paid by a passenger for a flight, including taxes and fees. Additionally, "airline fare" is also used to describe airfare. Other related terms include "flight fee", "fare rate", "air travel expense", among others. Whichever term is used, they all refer to the price paid to fly from one location to another.