Originally Posted by iahphx

Don't get too comfortable. I book flights throughout their system, originating/terminating at their various "focus cities" -- and I can detect no rhyme or reason to the constant schedule changes. (I do fly midweek most of the time if that might matter). The only flights I haven't seen materially change are the ones where no other flight time is commercially plausible: like flights to and from a Caribbean island. Frankly, I am mathematically astonished that you could have a dozen Frontier flights with no schedule changes and I could have a dozen flights where 10 or 11 had material schedule changes. I'm actually happy when I get the "inevitable" email telling me my flight has "only" moved by, say, an hour and a half.