Joe Raedle/Getty Images
A sign at the Miami International Airport shows cancelled flights after American Airlines initially grounded its Boeing 737 Max planes in March.
Updated at 8:30 p.m. ET
With American Airlines joining United in pulling 737 Max planes from their schedules and cancelling flights into early November, many travel industry observers are bracing for the next shoe to drop: higher priced fares and cancelled flights for the Thanksgiving and Christmas holidays season.
American Airlines announced Monday it is pulling the 737 Max from its schedule through Nov. 2, canceling about 115 flights per day. American reported last week that the Max grounding has already cost the airline $185 million in lost revenue.
United Airlines, the second largest U.S. airline in passenger volume, said Friday it would cancel flights through Nov. 3. That's 2,100 flights in September and another 2,900 flights in October because 14 of its 737 Max jets are grounded.
The Federal Aviation Administration found a new problem in Boeing's Max plane last month, so it will like be several more months before the company develops a fix and the troubled plane is certified to fly passengers again.
The FAA and its global counterparts ordered all 737 Max planes grounded in March, after an Ethiopian Airlines jet crashed shortly after taking off, killing all 157 people on board. It was the second deadly 737 Max plane crash in less than five months. A Lion Jet 737 Max plunged into the Java Sea off the coast of Indonesia in October under strikingly similar circumstances, killing all 189 people on board that plane.