United Airlines has announced the carrier has, once again, extended Boeing 737 MAX 9 flight cancellations. For now, the Chicago-based airline has taken the 737 MAX out of its schedule through June 4, 2020 as the troubled 737 MAX continues to be grounded globally. Prior to the latest update, United Airlines had removed the 737 MAX from its schedule through March 4.

United Airlines has a total of 14 grounded Boeing 737 MAX 9 planes. The carrier anticipates cancelling about 108 flights per day through June 4.

Of course, United Airlines isn't alone. American Airlines has pulled its fleet of 24 Boeing 737 MAX 8 from its schedule through April 6, 2020 while Southwest Airlines - the largest operator of the 737 MAX aircraft in the United States and worldwide - has removed its fleet of 34 Boeing 737 MAX 8 from its schedule through April 13, 2020.

On a side note, Dennis Muilenburg has just resigned as CEO of Boeing. While that does not guarantee the beleaguered Boeing 737 MAX aircraft can safely return to the skies at an earlier date, it is hoped that Boeing's new leader will be able to help repair the plane manufacturer's currently strained relations with the Federal Aviation Administration as well as restore confidence in its customers and flyers around the world.

As it stands, nobody knows the exact date when the troubled 737 MAX will be able to return to service. The Boeing 737 MAX planes have been grounded worldwide since March this year, following the two fatal crashes in Indonesia and Ethiopia that tragically killed 346 people within a short span of five months.

Denise Bay is a staff writer at GET.com. Email: denise.bay@get.com.