United Airlines Holdings Inc. on Friday began operating charter flights to position doses of Pfizer Inc.’s PFE 1.92% Covid-19 vaccine for quick distribution if the shots are approved by regulators, according to people familiar with the matter.
United Airlines Holdings Inc. on Friday began operating charter flights to position doses of Pfizer Inc.’s PFE 1.92% Covid-19 vaccine for quick distribution if the shots are approved by regulators, according to people familiar with the matter.