An awkward, reclusive, unusual young man with a wealth of trust fund money strikes up a friend with a hapless anti-obesity crusader who comes knocking on his door for donations.
American Airlines has a whopping $200 change fee on paid fares (other than full fare refundable tickets) for domestic flights, and up to $450 for international flights. Same day changes are $75 in economy and free for business and first class passengers on paid fares.
Change fee for domestic or international flights is $100. Change fees for flights that result in a date change are subject to more expensive change fees; the exact price is determined by the fare of the ticket and what type of change is being made.