The topic about the 200kt six seater had someone mention that airlines were invented for a reason and it got me wondering what most on here consider their cutoff point between flying themselves vs flying commercial. I live in Houston so I'm pretty centric to a good chunk of the country. My club has a pa28-181 so I'm looking at around 110kts/ hour. On a full tank I can fly for roughly 3 hours with reserves which works out great for rest and potty stops. A member of the club says he as no minimum distances he will fly so he will even fly down to Galveston instead of drive. However his max is about 5 hours and that is probably 1-2 hours more than me since landing and refueling takes up at least 45 minutes in itself. So for me, my range is likely Memphis and El Paso and all points within that radius. My trip to New York will be commercial both for time as well as cost. How do you decide whether to fly commercial or not?