Sun Country Airlines Holdings, Inc. operates Sun Country Airlines, a hybrid low-cost air carrier that deploys shared resources across its scheduled service, charter, and cargo businesses. The Company focuses on serving leisure and visiting friends and relatives (VFR) passengers, charter customers, and providing crew, maintenance, and insurance (CMI) service to Amazon.com Services, LLC (Amazon), with flights throughout the United States and to destinations in Canada, Mexico, Central America, and the Caribbean. Its Passenger segment consists of two businesses: Scheduled Service and Charter. These businesses both utilize the Company's passenger fleet. Its Cargo segment provides air cargo services. It flies a single-family fleet of mid-life Boeing 737-NG aircraft. Its fleet consists of about 63 Boeing 737-NG aircraft. This includes 45 aircraft in the passenger fleet, 12 cargo operated aircraft through the A&R ATSA with Amazon, and six aircraft that are on lease to unaffiliated airlines.