Airport Code

Three-letter codes used to identify airports.

Amenities

Services and extras offered by a travel supplier.

APEX ("Advance Purchase Excursion") Fare

Generally the lowest and most heavily restricted airfare.

ARC (Airlines Reporting Corp.)

Airline-owned corporation which accredits travel agents and sets regulation governing airline-agency relations.

Back-to-Back Ticketing

Booking two overlapping round trips with opposite origin and destination points, where both bookings meet restrictions required to obtain a discount fare (such as a Saturday-night stayover); then using one segment from each round trip for each direction of a single journey in order to get a lower overall fare.

Baggage Check

Official receipt issued by a carrier for luggage.

Baggage Tag

Personal identification that must be attached to luggage checked by an airline.

Base Fare/Rate

Price of a travel service before taxes and add-on charges.

Blackout Periods

Days or periods of high demand when special rates are not in effect.

Boarding Pass

A card given to a traveler indicating the seat assignment.

Bumping

Practice of removing confirmed passengers from overbooked flights.

Carrier

Company that transports passengers or freight.

Capacity Controlled

Limitation on number of airline seats, hotel rooms, or rental cars available under a particular rate or promotional offer.

Car Class

Size and type of rental car. Classes differ from vendor to vendor, and are stated usually as economy, mid-size, full-size, luxury, and specialty.

Car Rental Agreement

Contract between car rental vendor and customer.

Carry-on

Unchecked baggage.

Charter

Aircraft, motorcoach, or other mode of transportation reserved entirely for use by a group.