"In an effort to provide more certainty and avoid last minute flight disruptions, American has extended cancellations through June 5," the company said.
The air carrier has 24 Boeing 737 MAX aircraft in its fleet. The cancellation means 90 flights will not take off each day for a period that is more than a month longer than was expected.
READ MORE: Boeing to Establish Panel to Review Planes Design in Light of 737 MAX Crashes
The Federal Aviation Administration grounded planes of this type after they were involved in two fatal crashes within five months blamed on the jet’s aggressive anti-stall system that caused them to nosedive. Boeing is fixing the software.