United Airlines CEO Scott Kirby raised safety concerns regarding electric vertical takeoff and landing (eVTOL) aircraft in congested airspace. These comments create uncertainty for the airline's partnership with Archer Aviation.

United’s potential $1 billion aircraft purchase from Archer remains conditional. The agreement requires FAA certification and mutual agreement on several material terms.

United maintains the right to withdraw from the order if conditions are not met. Meanwhile, Delta Air Lines recently reaffirmed support for its eVTOL partner, Joby Aviation.