because once the flight has departed the unsold seats cannot gain any money therefore it will have perished
yes they do. on every seat
Sure, you can try and if they have an upgraded seat available it will be yours for a price.
yes.
That you have a reserved seat or seats for a specific flight on a particular airline, departing at such and such time, etc etc.
The average amtrak coach seat has the same room as an airline 1st class seat.
tough homework.
I would ring the airline directly
Yes. Delta has AVOD.
Depends on the airline but normally they are the ones that are nearest to the lavatory.
Onions are perishable produce.
Prefix for perishable
A. he or she is delayed