There are only flights to Habana and Santiago de Cuba from SDQ.
To Habana:
Thu, Sun Depart Santo Domingo 1:35 pm Arrive Havana 4:00 pm
Thu, Sun Depart Havana 9:55 am Arrive Santo Domingo 12:05 pm
Fare Schedule:
Adult one way: $259 U.S.
Adult round trip, up to 7 days: $395 U.S.
Adult round trip, 8 to 30 days: $409 U.S.
Adult round trip, 31 to 365 days: $518 U.S.
To Santiago de Cuba: (On an ATR-42)
Fri, Mon Depart Santo Domingo 4:30 pm Arrive Santiago de Cuba 6:30 pm
Fri, Mon Depart Santiago de Cuba 1:30 pm Arrive Santo Domingo 3:30 pm
Fare Schedule:
Adult one way: $229 U.S.
Adult round trip, maximum duration of one month: $299 U.S.
Cuban Tourist Card: $15 U.S.
Departure Tax: $50