- Delta added four routes to its domestic network on 16 February. All new flights are now offered each with single weekly frequencies and face competition from at least one carrier. Notably, the route from Orlando, FL (MCO) to Milwaukee, WI (MKE) was previously served by Northwest Airlines until December 2006, well before the carrier was absorbed by Delta.
|Boston, MA (BOS)||West Palm Beach, FL (PBI)||1||MD88||JetBlue (40)|
|Orlando, FL (MCO)||Hartford, CT (BDL)||1||MD88||Southwest Airlines (22)
|Milwaukee, WI (MKE)||1||MD88||AirTran Airways (17)
Southwest Airlines (9)
Spirit Airlines (3)
|Pittsburgh, PA (PIT)||1||A319||AirTran Airways (23)
Southwest Airlines (15)
|Source: Innovata w/c 4 March 2013.
*WF: Weekly Frequencies at launch.