Hello All! I have spent my entire career working in the airline business and currently work for a very large Chicago HQ'd airline. So many thing have to come together exactly right for a flight to depart on time: crew in position, fuel, bags, weather (not just at your departure and arrival cities but also enroute,) not to mention a serviceable airplane. I have never and would never fly on embarkation day! With time to spare, go by air!
Dennis