Last updated: 03/31/2021 *** Effective January 26, all airline passengers to the United States ages two years and older must provide a negative COVID-19 viral test taken within three calendar days of travel. Alternatively, travelers to the U.S. may provide documentation from a licensed health care provider of having recovered from COVID-19 in the 90 days preceding travel. Check the CDC website for additional information and Frequently Asked Questions. Waivers to the testing requirement may be granted by the CDC on an extremely limited basis when extraordinary emergency travel (like an emergency medical evacuation) must occur to preserve someone’s health and safety, and testing cannot be completed before travel. There are no waivers available for individuals who test positive for COVID-19. Individuals – or air carriers seeking to allow boarding by potentially qualifying individuals – who believe they meet the criteria for a waiver should contact the U.S. Embassy or Consulate at UlaanbaatarACS@state.gov and provide the information below. The U.S. Embassy or Consulate will then submit the request to the CDC for consideration. The following information must be provided for each passenger: