American Airlines Check-in
For domestic travel (other than Hawaii or U.S. Virgin Islands) with no baggage to check, you can check in at least 60 minutes before scheduled departure. If you are checking baggage, check-in is at least 90 minutes before.
For domestic travel to or from Hawaii or U.S. Virgin Islands, check-in is 120 minutes prior. For international travel (other than Nassau, Port-au-Prince, Port of Spain, or Aruba) check-in is 120 minutes prior to scheduled departure.
For international travel to or from Nassau, Port-au-Prince, Port of Spain, or Aruba, check-in is 180 minutes prior.
American Airlines baggage allowance
Carry-on: One carry-on item limited to 45 linear inches, and one personal item. Maximum weight per carry-on item is 40lbs.
Checked: For flights within the 50 states and between the United States and Canada, Puerto Rico and the U.S. Virgin Islands, a baggage fee of $25 applies. A second bag is charged $35.
For flights to and from Brazil, the maximum amount of baggage allowed free of charge for each ticketed passenger is two pieces checked and one carry-on. Two checked bags may not exceed 62in; carry-on bag, 45in. The maximum weight per checked item is 70lbs and the maximum weight per carry-on item is 40lbs.
For flights to international destinations, one piece checked and one carry-on item are allowed free of charge. Second bags will be charged $60. The checked bags may not exceed 62in each; one carry-on bag, 45in. The maximum weight per checked bag is 50lbs.
There is a charge of $100 per bag for the third, fourth and fifth bags.
Excess: Bag weights over 50lbs up to 70lbs are $60 each. Bag weights between 70lbs and 100lbs are $100 each. Bags measuring between 63in and 126in (160cm - 320cm) are $150 each. If your baggage is oversized and in excess between 63in and 126in (160cm - 320cm), you will have to pay an excess baggage fee as well as the $150 oversized fee. If your baggage is overweight and oversize, you will be charged both an excess fee and an overweight fee plus an additional $150 per bag.
The sixth bag and all bags after incur a fee of $150 per bag.
American Airlines legroom
Seat pitch: 30-34 inches.