United Airlines (UAL - Get Report) said Friday that it will continuing its groundings of the troubled Boeing (BA - Get Report) 737 MAX through November 3, a move that result in 2,100 cancellations in September and 2,900 in October.

The 737 MAX has been grounded since March following two crashes less than six months apart that killed a total of 346 people. United Airlines has 14 MAX jets in its fleet and had removed them from its schedule through August 3.

Boeing said recently that second-quarter and first-half deliveries declined as the planemaker feels the continued fallout from the global grounding of the 737 MAX jet.

On Monday, Saudi Arabia's flyadeal, a budget airline owned by the state-controlled Saudi Arabian Airlines, said it will opt for 30 of Airbus' (EADSY) A320neos, a rival to the 737 MAX, after pulling out of a provisional commitment to buy Boeing jets late last year.

Southwest Airlines (LUV - Get Report) has canceled flights through Oct. 1 and American Airlines (AAL - Get Report) through Sept. 3. The cancellations are likely to be extended. The grounding has forced about 150 daily flight cancellations for Southwest and 115 for American.

Boeing said that it would likely take until September or later to introduce a new software fix after the Federal Aviation Administration identified a new software issue a month ago.

Boeing's 737 program manager, Eric Lindblad, will retire in a matter of weeks after roughly 12 months on the job, Kevin McAllister, chief executive of Boeing's commercial airplanes division, told employees in the memo. Lindblad has been with Boeing for about 34 years and had mentioned retiring last year, McAllister said.

Mark Jenks, who has been leading Boeing's potential new mid-market airplane project, will be taking Lindblad's place as the lead of the 737 program.

Shares of Boeing were up 1.6% to $364.57.