I've read a few travel reports in the Trip Report Forum concerning passengers who are taken ill in the departure lounge. If I recall correctly, all of them seem to have got on their flights and then gradually improved as the flight progressed. But what if you start feeling really really sick in the hour or so leading up to boarding?
I usually fly on deep discounted tickets and I pretty well understand them to be valid only for a particular flight and a particular date and time. I mean, if it comes to wasting a $700 or $800 ticket, I will probably board the aircraft and tough it out. But I think it would be better for the surrounding passengers if I did not fly with them.
Surely by travelling all the way to the airport and going through ticketing and security, I've indicated my intention to fly and that I'm not trying to pull a fast one.
Does the check-in staff have any discretion about re-booking me on a later flight? What if I'm travelling with other family members? Does it very from airline to airline?