Lebanon has a small municipal airport with daily flights to and from Boston, but it is almost always easier and cheaper to arrive into Boston Logan Airport and take the Dartmouth Coach to Lebanon or Hanover. The coach departs about once an hour directly from the airport terminals and arrives in Lebanon and Hanover ~3 hours later. Alternatively, rental cars are available at Boston Logan and is the preferred option if you'll want to explore whilst you're in town.
On-street parking is available on Railroad Row or you can park in the Windsor County Courthouse lot - both are only a two minute walk to the Main Street Museum!
The booking form will ask you to select a date and time for your ticket, but the Boston tickets are good for any journey within a year of purchase - so don't panic if your flight is delayed or you miss the coach you intended to catch!
Rental companies at Boston Logan include Enterprise, Avis, Hertz, Budget, and Alamo.
Cape Air is the only airline serving the Lebanon Municipal Airport.