I used the services of Boutique Airlines on a round-trip from Denver to McCook Nebraska. I knew having flown in on Southwest Airlines, which had a great deal of turbulence, that I would have the same on a much smaller jet. I was very impressed with the pilots on the trip from Denver to McCook having to deal getting around a storm. Yes, flight was very rough but these guys are pilots not God they cannot control the weather.
My flight returning from McCook to Denver was delayed by about 2 hours. Again, they cannot control the weather and had a very rough previous night. What they could do is notify me in a timely manner. This was done both by a voice message left and an email sent. The flight Denver was extremely pleasant do to nice sunny skies and a very qualified pilot.
As it turns out, almost all flights into Chicago out of Denver had been canceled for the day due to bad weather.
I would be happy to recommend this airlines. But, on future flights I think I would allow longer than the hour and a half between arrival time in Denver and next flight out. It would not have made a difference on this trip since all flights were cancelled. It would make a potential difference on future flights.