DEN is a hub for United Airlines, which had a leading 47.3% passenger market share at the airport in 2024. Southwest Airlines operated 31% of the airport’s passenger traffic last year.

Denver International Airport is busy. This Denver airport lounge guide names them, including the Capital One and Centurion lounges — and multiple United lounges.

Passengers felt stranded on DIA's C concourse late Tuesday as trains to the terminal were delayed. Many travelers told ...

United Airlines took note ... can bypass the potentially long lines at Denver International Airport. There’s no TSA or other security inside the terminal. For now, the Landline bus operates ...