There is now a long list of countries that people from the United States can travel to without taking a COVID test before. That includes neighbors Mexico and Canada. The only catch is that people still need to show proof of a negative test to get back into the US.
As of now, eMed’s BinaxNOW COVID-19 Ag Card Home Test is still the only at-home test approved for returning international flights. It’s accepted by US and international airlines and cruise lines, with partnerships with United Airlines, American Airlines, and Delta Air Lines.