Frontier Airlines STL Terminal – St. Louis Lambert International Airport
Frontier Airlines SUX Terminal – Sioux Gateway Airport
Frontier Airlines SXM Terminal – Princess Juliana International Airport
Frontier Airlines ORD Terminal – O’Hare International Airport
Frontier Airlines SJU Terminal – Luis Muñoz Marín International Airport
Frontier Airlines PBI Terminal – Palm Beach International Airport
Frontier Airlines SFO Terminal – San Francisco International Airport
Frontier Airlines PHX Terminal – Phoenix Sky Harbor International Airport
Frontier Airlines SAN Terminal – San Diego International Airport
Frontier Airlines MIA Terminal – Miami International Airport
Frontier Airlines PHL Terminal – Philadelphia International Airport
Frontier Airlines SAV Terminal – Savannah/Hilton Head International Airport
Frontier Airlines MSP Terminal – Minneapolis−Saint Paul International Airport
Frontier Airlines LAS Terminal – Harry Reid International Airport