United Airlines CEO Oscar Munoz on Wednesday said the airline is getting worried about the partial U.S. government shutdown as it drags on but added that the company isn't yet seeing a "significant" impact on bookings.
Munoz's comments come a day after the CEO of rival Delta Air Lines, Ed Bastian, said the shutdown that began Dec. 22 will cost the airline $25 million this month.
"There is some impact there," Munoz told CNBC's Phil LeBeau in an interview Wednesday. "It's not discernible and it's not significant. Clearly the longer this goes, of course there's going to be impact, and we do worry about that."
United, which reported strong profits and revenue after the market closed Tuesday, runs a hub out of Washington Dulles International Airport. Munoz said the airline provided a broader revenue growth estimate — between flat to up 3 percent — than usual because executives don't yet know the impact of the shutdown.
On Tuesday, Delta's Bastian said the airline is losing $25 million in revenue this month alone because fewer government employees and contractors are traveling.