"Airfare purchases" refers to buying tickets for flying on an airplane.
Sentences with «airfare purchases»
You earn a massive 5 points per dollar spent on airfare purchased directly from the airline, but you earn just one point per dollar spent on everything else. (milecards.com)
If you spend a lot on other travel expenses, you'll also fare well with earning double points for airfare purchased directly from airlines, rental cars and dining out. (rewardexpert.com)
Check out this post for more on maximizing airfare purchases. (thepointsguy.com)