The term "award space" refers to free or discounted airline tickets that are given out by an airline as a reward, recognition, or incentive for customers who have met certain criteria. This could include flying a specific number of miles on the airline's frequent flyer program, signing up for a credit card affiliated with the airline, or participating in a promotional offer. Award space is essentially "extra" seats that are set aside by an airline to distribute among its loyal customers as a reward for their continued patronage.