15 Best U.S. Airports for Finding Cheap Flights

"As a hub for American Airlines with additional service from low‑cost carriers Frontier, Spirit, and Southwest, this Philadelphia airport sees airfare pressure from both the legacy and budget carriers—producing a lower average seat price ($471.90) and frequent sales to watch for from American." - Stefanie Waldek Stefanie Waldek Stefanie Waldek is a space, travel, and design journalist with expertise in aviation, meteorology, and polar regions. She was a former editor at Architectural Digest, TripAdvisor, and ArtNews. Travel + Leisure Editorial Guidelines