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  DISCOUNTS
 
Fare rules will commonly refer to three types of discounts: infant, child and senior. Infants under 2 usually fly free on domestic flights provided they do not occupy a seat. Some fares offer children's discounts, generally for children aged 2-11. Deeply discounted seat sale tickets may not offer a further discount for children. Many airlines offer senior citizen discounts, and some also offer discounts for a companion traveling with the senior citizen, even if the companion is not themselves a senior citizen. Different airlines have different age definitions of senior.
 
     
     
             
             
             
             
             
     
     
 
  TRAVEL TERMINOLOGY
 
 
  ALPHABETICAL WISE