Electronic ticket	A paperless ticket that allows travellers to fly with only a photo ID. Commonly referred to as “E-ticket’s”, they cannot be lost or stolen because it is an electronic reservation.
Ex-...	Departs from...
Fare Basis	The code that determines the price and rules restrictions on a ticket.
Fare Rules	To distinguish one fare level from another, the airlines assign special purchasing rules and restrictions. Generally, the lower the fare, the more restrictions a fare has (such as 21 day advance purchase or Saturday night stay or travel on a certain day of the week).
Frequent Flyer Program	A membership program offered directly to the traveler by the air carrier enabling members to accumulate miles (points) personally and redeem them according to the terms and conditions of the air carrier.
Global Distribution System (GDS)	See CRS
Hub	A city in which an airline has a major presence. Often, it is the city in which the airline was formed ie Amsterdam is the Hub for KLM Royal Dutch Airlines.
Layover (also known as Stopover)	The period of time spent between connecting flights
Low Cost Airline	Often perceived to be the “budget” end of the market and charge you for ancillary services such as meals, seats, luggage etc
Minimum connect time	The shortest time required in order to successfully transfer to a connecting flight. It is recommended to select a connecting flight that exceeds the minimum connection time.
No Show	A traveller that doesn’t appear for their flight, hotel, or car rental reservation
Non-refundable tickets	A ticket in which no money will be returned if the customer no longer intends to use the ticket
Non stop	A flight that travels directly to its destination without connections or layovers.
Overbooking [also known as Bumping]	When a carrier books more reservations than available seats. This often results in compensation being offered to passengers to travel on later flights.
Passenger Name Record (PNR) [also known as Record Locator]	The official name of one’s reservation in a computer reservation system (CRS or GDS). This number is unique, as it will never be assigned again.
Pre-paid	Services such as hotels offer discounted rates for payment up front. In such circumstances, the hotel’s cancellation policy should be thoroughly checked as it may offer no changes or refunds.
Record Locator	See Passenger Name Record