Alaska Airlines canceledall Boeing 737 MAX 9 flights through Jan. 13 while United canceled 167.
Boeing is suffering another crisis of confidence from American flyers after an exit door flew off one of its MAX 9 jets during an Alaska Air flight last week, just the latest black eye for its 737 MAX lineup.
Zoom in: Boeing's five-day stock chart could very well double as a public sentiment indicator.
Nervous flyers are checking tickets for upcoming flights, noting aircraft models and their proximity to doors, Bloomberg notes.
Of note: Alaska Air and United are the only two airlines in the U.S. that operate Boeing 737 MAX 9s, per CBS News.