Travelzoo offers the Hornblower Cruises 3-Hour Dinner Cruise for Two on Thursday or Friday bundled with a bottle of prosecco with prices starting from $199. (This package is available on Saturday for $10 more.) That's a savings of $147 and the lowest price we could find. This package includes an hors d'oeuvres reception hour, a 3-course a la carte menu, dessert station, taxes, service charges, and landing fees. Book this travel deal by December 24.
Of note: Travelzoo also offers this Cruise for Four on Thursday and Friday for $389. Or, sail on Saturday for $405.