Founded in 1927, it moved more than 1 million passengers in a year for the first time in 1997. After years of growth it handled 4.33 million passengers in 2005, its peak year. Passenger tallies have declined since then in common with many regional airports; it handled 1.85 million passengers in 2018. Manchester–Boston Regional Airport is by far the busiest airport in New Hampshire and the only one with substantial commercial service. It is also New England's fifth-largest airport by passenger volume, behind Boston Logan in Massachusetts, Bradley International in Connecticut, T. F. Green in Rhode Island, and Portland International Jetport in Maine.