Osh Airport is not big, nor is it modern. Nor is it well organized. There's likely to be lots of pushing/shoving through lines, and your luggage will likely be carted around on a truck, rather than distributed on orderly conveyors at baggage terminals. That said, there are flights to most Central Asian countries, Turkey, West/Northwest China, and Russia.
Osh Airport, Osh, Osh Province, Kyrgyzstan (Directions)