"Airports are run like football stadiums; you pay more just by virtue of being there," RewardExpert CEO and cofounder Roman Shteyn said in a statement. "Some airports take advantage of a captive audience to jack up expenses for items like food, parking, Wi-Fi, and other amenities. On top of that, some airports simply have higher costs for airfare, when compared to the national average. This ranking factors in all costs a traveler may incur at an airport to determine which are the most and least wallet-friendly."