Frontier Airlines COS Terminal Frontier Airlines’ presence at the Colorado Springs Airport (COS) Terminal is emblematic of its strategic approach to serving regional markets with affordable and convenient air travel options. As a leading ultra-low-cost carrier in the United States, Frontier Airlines has leveraged its operations at COS Terminal to connect travelers from Colorado Springs to a wide array of destinations across the country. This essay delves into the significance of Frontier Airlines’ presence at COS Terminal, exploring its impact on the local economy, passenger experience, operational strategies, and future prospects.