Bradley International Airport -- Springfield's gateway to the world -- competes for passengers with neighbors like LaGuardia, JFK, Newark, Rhode Island's T.F. Green and Boston's Logan. It also competes for aircraft with literally every airport in the country, all clamoring to add more flights in a marketplace where there are just too few jetliners. That's according to Kevin Dillon, executive director of the Connecticut Airport Authority, which owns and manages Bradley and five general aviation airports in the Nutmeg State. "The airlines see a lot of opportunities," he said. "What holds airlines back is availability of aircraft."