American Airlines the largest airline in the world in terms of total passengers transported and fleet size, the second-largest airline in the world in terms of total operating revenues, was founded in 1930. Now has its hubs at Dallas-Fort Worth Int'l Airport ,O'Hare International Airport, Miami International Airport, Lambert Saint Louis Int'l Airport ,Luis Muñoz Marín Int'l Airport and secondary hubs at Los Angeles Int'l Airport, Logan Int'l Airport, John F. Kennedy Int'l Airport .
Check-in times: the minimum arrival time for Domestic Travel (except departing Hawaii or U.S. Virgin Islands) without baggage to Check is 60 minutes, with checking baggage -90 min. For International Travel- 120 min and if departing Bermuda- 150 min .For International Travel departing Aruba,Dublin,Mexico,Nassau,Paris Charles De Gaulle,Port-au-Prince,Port of Spain,San Pedro Sula,Tegucigalpa you are to arrive 160min. before departure. For International Travel departing Delhi , India 210 min. is required.
Change to passenger name or flight: changes can be made either online for a fee of $20 per person plus any difference in price for the new flight, or at the call center for a fee of $25 per person plus any difference in price. For travel to the same destination, the reservation can be changed to standby travel for any flight to the destination leaving on that day for no extra cost. If the original flight was the last out of the airport, standby travel for the first of the next day's flights is allowed and if there is only one flight per day, standby on a flight on the preceding or following day is not allowed.
Baggage allowance: 2 pieces checked (at 62 in/157 cm each) and one carry-on(at 45 in/114 cm) is the maximum amount of baggage each ticketed passenger is allowed free of charge for flights wholly within the United States and between the United States and Canada as well as to /from Puerto Rico and the U.S. Virgin Islands. The maximum weight per checked bag is 50 lbs/23 kgs. The maximum weight per carry-on bag is 40 lbs/18 kgs. Checked baggage in excess of the free baggage allowance will be charged as follows: $80 per piece for the first three additional pieces/$105 per piece for the fourth, fifth, and sixth additional pieces/$180 per piece for the seventh and any additional pieces. Excess baggage charges apply to overweight pieces between 51 and 100 pounds( 51-70lbs. – 25$ fee/ 71-100lbs. -50$ fee) and oversized pieces of luggage(63- 115 in. -$100 per piece). The charge for both oversized and overweight baggage is added together. Items larger than 115 inches and 100 lbs. are not accepted as checked baggage. For flights to/from Europe and Asia any piece of baggage overweighing 50 lbs/23 kgs is charged $25.

Child fares: Infants under two may be held on an adult's lap free of charge.
and are eligible for a 50% discount off the applicable adult fare, but must be booked at the same time as accompanying adults. Children two years of age and older must travel in a purchased seat, at an adult fare.
Senior fares: Adults must be traveling on AA. purchased published fare.
Pet travel: Checked cats and dogs can travel for a fee of $100 per container Within and between the United States and Canada, Mexico, Central and South America and the Caribbean/ $80 per container for pets traveling in the cabin (*Plus 7% Canadian Good and Services tax). The maximum size for cabin pet carriers is 23" long x 13" wide x 9" high. A pet kennel counts as either a passenger's one carry-on bag or personal item. Carry-on pets are permitted to/from Hawaii or Transatlantic/Transpacific or Central and South America. Only one pet kennel per ticketed passenger may be accepted for travel in the cabin, as pets must go under the seat in front of you. The kennel may contain 2 dogs or two 2 cats. The maximum number of carry-on kennels allowed is seven per flight: 2 in first class and five 5 in coach and/or business class. Health certificate is not required for the acceptance of pets for travel in the cabin or as checked baggage within the 50 United States .
Pre-assigned seating: can be booked for no extra cost online . A seating plan with legroom details is also available on AA web-site, where you can choose the perfect seat.