Advance Purchase Excursion (APEX) fare

Advance Purchase Excursion (APEX) fare is a discounted airline ticket that must be purchased a set number of days (for example, at least 14 or 21 days) before the travel date. 

APEX fares often have restrictions, such as nonrefundable tickets, minimum or maximum stay requirements, or specific travel dates.

APEX fares attract price-sensitive travelers with flexible travel schedules who want to secure a discounted rate. For airlines, APEX fares stimulate bookings, optimize seat occupancy, and increase revenue predictability.