The airline wants to serve the D.C. flight on a mainline E-190 jet that seats 99, departing the nation's capital at 1:50 p.m. and arriving in Oklahoma City at 4:10 p.m. Eastbound flights would depart Oklahoma City at 4:40 p.m. and arrive in D.C. at 8:30 p.m.
Proposed flights to Charlotte, N.C., would depart at 7:15 a.m. and 1:30 p.m. daily. All flights would have two classes of service.
US Airways estimates it would serve more than 56,000 passengers annually with the D.C. service and 84,000 travelers with the Charlotte flights.
DOT officials will look at the need for the service in the government, private sector and community.
Carney said travelers can submit comments about the proposal to the airport or online at www.regulations.gov.