Yes, you can leave Boston Logan International Airport (BOS) during a layover in 2026, provided your layover is long enough to account for travel and security. Generally, a layover of 6 hours or more is recommended if you wish to see downtown Boston. Because Logan Airport is remarkably close to the city center, you can take a free shuttle to the Blue Line "T" station or use a Water Taxi for a scenic 10-minute ride across the harbor to the North End or Seaport. However, you must remember that leaving the airport means you will have to clear TSA security again upon your return, which can take anywhere from 15 to 45 minutes during peak hours. If you are an international traveler, you must also clear U.S. Customs and Border Protection before you can exit the terminal. For shorter layovers, it is safer to enjoy the airport’s local culinary staples, such as Legal Sea Foods, within the terminal to avoid the risk of missing your connecting flight due to traffic.