Looking at the confirmation it was a skysaver with one F leg:

Fri 16NOV DELTA 5186* OK N LV HOUSTON-INT 645A 5C
AR CINCINNATI 1005A COACH
*Operated by COMAIR

Fri 16NOV DELTA 4436* OK N LV CINCINNATI 115P 6D
AR TORONTO 249P COACH
*Operated by ATLANTIC SOUTHEAST

Thu 22NOV DELTA 4413* OK N LV TORONTO 755A 5C
AR ATLANTA 1015A COACH
*Operated by ATLANTIC SOUTHEAST

Thu 22NOV DELTA 1048 OK R LV ATLANTA 1116A 1C
AR HOUSTON-INT 1239P FIRST