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Join Date: Apr 2001
Location: deep within the Eskimo lair
Programs: TubWorld, Bar Alliance, Borratxo Legendarium
Posts: 16,970
A lap child isnt considered a separate passenger for domestic faring. When you selected "infant" on expedia, it most likely gave you the "infant fare" which on most domestic carriers is 50% of the adult fare. This gives them a seat and their own baggage allowance.