American is the first airline to expand access to at-home testing for all flights to U.S. locations that have COVID-19 restrictions, including Puerto Rico. Tests will be available for purchase Dec. 9, for travel starting Dec. 12, through American’s at-home testing partner, LetsGetChecked. FORT WORTH, Texas ― American Airlines is expanding its preflight testing program for domestic travel.

https://news.aa.com/news/news-details/2020/American-Airlines-Offers-Preflight-COVID-19-Testing-For-All-US-Destinations-with-Travel-Requirements-OPS-DIS-12/default.aspx