The rise in COVID-19 cases from the delta variant is hurting airline bookings and hampering the travel industry's recovery, multiple airlines reported Thursday. American Airlines said a slowdown that started in August has continued into September, and the airline lowered its outlook for third-quarter revenue. United Airlines said its flying and revenue are both weaker than previously expected, and it is cutting its schedule for later this year to match the lower demand. United forecast a pretax loss in the third quarter that could extend into the fourth quarter if the virus outbreak continues.
Delta Air Lines said it still expects to post an adjusted pretax profit for the third quarter, but revenue will be toward the lower end of its previous forecast.