Time to Fly
A combination of frequently used aircraft with short turn rounds, extreme weather conditions, and airlines operating close to the edge of insolvency means that delays in the US seem a lot worse than back in the UK. This view may be distorted by the fact that when I was in the UK, most of my flights were long haul ones; which tend to run on time as there is a longer turn round and they represent the airlines’ most lucrative operations. I have come across a website that allows you to look at average delays for particular routes by the time of day. This might be useful, but in my experience one tends to book flights based on cost and the convenience of the time; I am not show knowing that there was a 10% higher chance of delay would have a significant impact on the flight booked.