American said that as of March 26, average bookings for the next seven days had reached 90% of levels experienced before the pandemic upended air travel in 2019, with a domestic load factor of about 80%.
"The Company presently expects this strength in bookings to continue through the end of the first quarter and into the second quarter," it said in a regulatory filing.
Travellers from other regions, including neighbouring countries, will have to have tested negative before arrival in the country.
Travellers arriving from Europe should be holding negative test results, will be tested again and will have to self-quarantine even if their test is negative.