Eastern Airlines pioneered the air shuttle concept in 1961 with hourly service from New York’s La Guardia airport to both Washington National and Boston. It was operated with Lockheed Constellations way back then and eventually included widebodies at peak times in the 1980s.
In 1989, Donald Trump bought the Air-Shuttle service and operated it for a short time. It eventually merged into USAir, now US Airways, and both they and Delta Air Lines currently operate hourly service in those markets.
Here’s the Eastern Airbus A300 B2 used on Air-Shuttle flights seating a total of 265 coach passengers. These flights were no-frills and didn’t even allow for advance seat assignments. No big deal, really, given they were short-haul routes. I’d definitely be in a window seat and would try for rows three, four, 14 or 15 (those last two for a view of the engine).
Where would you sit?