Delta Airlines operates from the main terminal at Sioux Falls Regional Airport (FSD). This airport has a single terminal building, making it easy for travelers to navigate. If you're asking what terminal is Delta Airlines at FSD, the answer is simple: Delta flights depart from the main terminal, which handles all commercial airline traffic at FSD. This terminal includes check-in count... https://airlinesairportsterminals.com/delta-airlines/fsd-terminal-sioux-falls-regional-airport/