Frontier Airlines, the Denver-based bare-bones carrier, is suspending more than 40 routes indefinitely, according to SimpleFlying.com. One of those routes is Omaha to Dallas-Fort Worth. In addition to DFW, Frontier offers nonstop flights from Omaha to Denver and Orlando. Frontier is a minor player at Eppley Airfield as it carries only 2.5 percent of total Omaha passengers.