Here's what they'll actually do out of DCA according to airlineroute.net. It's slightly different from earlier announcements.
Washington Reagan – Bangor Increases from 2 weekly to 2 Daily, CRJ200 service
Washington Reagan – Birmingham AL NEW 3 Daily CRJ200 service
Washington Reagan – Fayetteville NEW 1 Daily CRJ200 service
Washington Reagan – Indianapolis Increases from 5 to 6 Daily
Washington Reagan – Islip NEW 2 Daily CRJ200 service
Washington Reagan – Jacksonville NC NEW 1 Daily CRJ200 service
Washington Reagan – Little Rock NEW 2 Daily Embraer E170 service
Washington Reagan – Memphis NEW 3 Daily CRJ200 service
Washington Reagan – Omaha NEW 1 Daily Embraer E170 service
Washington Reagan – Pensacola NEW 2 Daily CRJ200 service
Washington Reagan – Savannah Increases from 2 to 9 weekly
Washington Reagan – Tallahassee NEW 1 Daily CRJ200 service
Washington Reagan – Valparaiso NEW 1 Daily CRJ200 service