At the smallest town I've ever lived in, the airport handles 3 or 4 flights per day, all on Horizon Air feeding to SEA. The same person is at the check-in counter, loads bags onto the plane, does the orange flashlight dance to guide the plane onto the taxiway, and probably sweeps the terminal too.

While I lived there, the airport didn't have full ILS capabilities, which made life interesting in the late winter/early spring when fog was common. I spent many wayward hours waiting at SEA, boarding the little Q400, flying over and circling, attempting a couple of landings, and flying back to SEA to wait some more.