KEY POINTS
  • United, American and Southwest were among airlines that lowered financial estimates.
  • The carriers warned that bookings slowed amid the spread of the delta variant of Covid-19.
Travelers make their way through the Miami International Airport.

Several U.S. airlines on Thursday lowered their financial forecasts, citing weaker bookings amid a rise in Covid-19 cases in recent weeks.

United Airlines said weaker revenue will mean adjusted pretax losses in the third and fourth quarters of this year. The Chicago-based carrier said in July it expected to post pretax profits for that period. It plans to further trim capacity this year because of weaker demand.