United Airlines is asking all passengers to complete a health self-assessment during the check-in process. Based on recommendations from the Cleveland Clinic, the “Ready-to-Fly” checklist asks customers to confirm they have not experienced COVID-19-related symptoms in the 14 days prior to flying. The assessment is part of United CleanPlus, the company’s health and safety program. The Ready-to-Fly checklist requires customers to click “Accept” to indicate they have reviewed the checklist during the digital check-in process on the United mobile app; United.com; on a United kiosk; or by reviewing and verbally confirming when checking in with an agent at the airport to receive a boarding pass. The checklist includes: must wear a face covering while on board; have not been diagnosed with COVID-19 in the last 21 days; have not experienced any of a variety of symptoms in the past 14 days; have not been denied boarding by another airline due to a medical screening for a communicable disease in the last 14 days; and have not had close contact with someone who tested positive for COVID-19 in the last 14 days.