Allegiant Airlines will begin services out of Colorado Springs and launch new Denver routes next year, the airline said Tuesday.

In 2025, Allegiant Airlines will offer routes at the Colorado Springs Airport as well as two new routes out of the Denver International Airport.

After an absence of more than six years, Las Vegas-based Allegiant Air is resuming service at Colorado Springs Airport with three new routes starting early next year.

Starting early next year, Allegiant Air is adding three new cities to its roster of nonstop routes: Colorado Springs; Gulf Shores, Alabama; and Columbia, South Carolina.

Frontier Airlines and Allegiant Travel Co. are launching several new routes out of Tampa Bay.

"These additions reflect our ongoing commitment to meet customer demand," Allegiant Chief Commercial Officer Drew Wells said in a statement.