Spirit Airlines announced it will add routes from Atlanta to Chicago O’Hare and Detroit starting Oct. 24, as it adds planes to its fleet.

The airline is moving up the launch date for the two new routes due to early deliveries of new aircraft. Miramar, Fla.-based Spirit also added a route from Atlanta to Houston Bush Intercontinental this month.

The airline will operate daily service on each of the routes.

Meanwhile, another low-cost carrier, Denver-based Frontier Airlines, is also adding routes from Atlanta to Orlando, Chicago and Washington Dulles.