Delta Air Lines primarily operates out of Terminal A at Boston Logan International Airport for its domestic flights. For international flights, Delta typically departs from Terminal E. If you need to transfer between terminals, a free shuttle service is available to help passengers move between Terminals A and E. The shuttle runs frequently, making it easy for travelers to switch terminals if needed. Additionally, passengers can find Delta Airlines Logan Terminal which provides a relaxing space for eligible travelers. Be sure to verify your terminal and flight details in advance, as assignments can occasionally change.