Use Expedia's filter tool to find some terrific Groton package deals. When you begin your search, just set your maximum budget and then sort the results by "Price: low to high." If you want to save, plan your break for midweek, or search for Groton package deals in the off-season. Play around with your travel dates and you may land even bigger discounts. As a rule of thumb, it's typically best to lock in your holiday package well in advance.