While many people in the United States say goodbye to summer after Labor Day, don't panic. If you feel like the season has passed you by in a blur of subway delays and almost-going-to-the-beach days that turned into actually-just-watching-Netflix days, it's not too late. Technically, summer ends September 21, so there's plenty of time left for exploring local beaches, hiking in a National Park, or just reading that novel you've been meaning to get around to. September is the perfect time to live out the rest of your summer fantasies, as many of the school vacation crowds have disappeared, and both hotels as well as airlines are more likely to be offering deals. It's also a great opportunity to start planning travel for shoulder season (the few months between peak seasons in any given destination when prices go down and travelers can score big). So why not head to Cape Cod for the fall solstice, or book a trip to Vermont before all of the foliage-lovers take over most of New England? Because summer definitely isn't over just yet.