Been to ONL multiple times and it's always a consideration during our route planning. Really fine, quiet facility. Haven't used the courtesy car, but they look in good shape and always available. Sleep room and pilot rooms are nice.

We were flying Bozeman to Oshkosh and got detoured for weather. O'Neill is as good as it gets in terms of a small, well kept, affordable, and welcoming fbo. It's surrounded by lovely farmland and the runways and taxiways are in fine condition. The fbo was very cozy and we even thought about sleeping there (in the fbo) overnight since there were two beds.

All self service pumps Jet A premix and 100LL with a credit card machine inside the lobby vestibule. Comfortable pilot lounge, restrooms, and lobby. Plenty of crew cars.