Frontier Airlines plans to expand its existing service between Madison and Washington National Airport from 7 June.
The carrier will increase Madison-Washington service from three times weekly to daily.
The airline will also increase its existing direct service between Madison and Orlando from seasonal to year-round from 27 May.
Currently, Frontier now offers three nonstop routes from Madison, as well as connections throughout the western United States via daily service to its Denver hub.
Frontier says it will deploay 99-seat Embraer 190 aircraft, featuring onboard wi-fi availability between Madison and Washington, while the airline will use Airbus 319 aircraft on Madison-Orlando route.