Southwest, airline pilots union deny claims that anti-vaccine walkouts prompted cancellations

 https://www.politifact.com/factchecks/2021/oct/11/tweets/southwest-airline-pilots-union-deny-claims-anti-va/

In separate statements to the press, Southwest Airlines and the union representing its pilots denied the widespread internet rumors that claimed the airline canceled thousands of flights because crew members walked off the job or called in sick to protest the company’s COVID-19 vaccine mandate.