Flight cancellations of the embattled Boeing 737 Max are creeping closer to the busy holiday travel season, with two major U.S. airlines pulling the jets from their flight schedules through early December as the fleet remains grounded.

American Airlines said Sunday it would remove the 737 Max from its flight schedule until Dec. 3 and expects roughly 140 flights per day will be canceled. United Airlines, meanwhile, is pushing flight cancellations to Dec. 19 and expects to cancel 70 flights per day in September, 95 flights per day in October, 93 flights per day in November, and 96 flights per day in December.