Wondering what terminal is Alaska at DIA? Alaska Airlines operates from Concourse A at Denver International Airport (DIA). Easily accessible via the airport train, Concourse A handles all Alaska Airlines departures and arrivals. If you're flying soon, knowing what terminal is Alaska at DIA ensures a smooth travel experience with timely check-ins and gate info. https://airlinesterminaloffice.com/alaska-airlines/alaska-airlines-den-terminal-denver-airport/