Bookable through Google Flights or on Priceline
ORD-ATL available from November 4th through February 14th, EXCLUDING the following dates:
November: 21, 22, 25, 26, 27
December: 19, 20, 21, 22, 23, 26, 27
January: 1, 2, 3, 4, 6, 7
ATL-ORD available from November 4th through February 14th EXCLUDING the following dates:
November: 5, 9, 12, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27
December: 22, 25, 26
January: 1, 2, 3, 9