The Boeing 737 MAX was grounded in March after crashes at Ethiopian Airlines and Lion Air killed 346 people. At the time of the grounding, United had expected to have 30 MAX jets in its fleet by year-end, Bloomberg said.
Bloomberg and Reuters reported Friday that the company said it expected to cancel more than 8,000 flights in October through early January. The company said it would monitor regulatory updates and make adjustments accordingly.
"We have cooperated fully with the FAA's independent review of the MAX aircraft, and we won't put our customers and employees on that plane until regulators make their own independent assessment that it is safe to do so," the Chicago carrier said in a statement to Reuters.
Southwest Airlines (LUV) - Get Report has canceled flights through Jan. 5, while American Airlines (AAL) - Get Report has extended cancellations of Boeing 737 MAX flights through Jan. 15, Reuters reported.
United shares were up 1.4% to $88.54 on Friday.