- Sun Country Airlines CLT Terminal – Charlotte Douglas Airport
- Sun Country Airlines CVG Terminal – Cincinnati Northern Kentucky Airport
- Sun Country Airlines IAD Terminal – Washington Dulles Airport
- Sun Country Airlines LAS Terminal – Harry Reid Airport
- Sun Country Airlines SDF Terminal – Louisville Muhammad Ali Airport
- Sun Country BOS Terminal – Boston Logan Airport
- Sun Country BUF Terminal – Buffalo Niagara International Airport
- Sun Country BWI Terminal – Baltimore Washington International Airport
- Sun Country DFW Terminal – Dallas Fort Worth Airport
- Sun Country DTW Terminal – Detroit Metropolitan Wayne County Airport
- Sun Country EAU Terminal – Chippewa Valley Regional Airport
- Sun Country EWR Terminal – Newark Liberty International Airport
- Sun Country FLL Terminal – Fort Lauderdale-Hollywood International Airport
- Sun Country GEG Terminal – Spokane International Airport
- Sun Country GPT Terminal – Gulfport-Biloxi International Airport
- Sun Country IAH Terminal – George Bush Intercontinental Airport
- Sun Country JFK Terminal – John F. Kennedy International Airport
- Sun Country MCO Terminal – Orlando International Airport
- Sun Country MSP Terminal – Minneapolis-Saint Paul Airport
- Sun Country PHL Terminal – Philadelphia International Airport
- Sun Country PHX Terminal – Phoenix Sky Harbor International Airport
- Sun Country PUJ Terminal – Punta Cana International Airport
- Sun Country SRQ Terminal – Sarasota Bradenton International Airport
- Sun Country STT Terminal – Cyril E. King Airport