Travel CDC chief blasts American Airlines for not blocking seats: ‘We don’t think it’s the right message’ June 30, 2020July 1, 2020 Dawn Gilbertson and Grace Hauck, USA TODAY Comments Off on CDC chief blasts American Airlines for not blocking seats: ‘We don’t think it’s the right message’ American is not alone in not restricting the number of seats for sale. United, Spirit and Allegiant all fill as many seats as they can sell.