Q. I am flying to Vegas from Tulsa in November on United. My flight itinerary leaves Tulsa at 1:08 pm arriving in Denver at 1:50, departing Denver 2:55 arriving Vegas 3:50. What are my chances that this flight will be on time and I will not be late for a 6:00pm engagement?

A. On time departures and arrivals vary according to weather (and not just in the departure and arrival cities), time of day of the flight, the airport and the airline.To get a better feel of your chances of landing on time, you can visit the US Department of Transportation Bureau of Statistics webpage, where you can track on-time statistics by airline, airport and flight number. If your flight has a lousy on-time track record, you might consider switching to an earlier flight.