A United Airlines jet prepares to take off at Denver International Airport in Denver on Dec. 24, 2024. David Zalubowski/AP PhotoPresident Donald Trump said he opposes a potential merger between American Airlines and United Airlines, while suggesting the federal government could help keep struggling Spirit Airlines afloat.Speaking Tuesday on CNBC’s Squawk Box, Trump said he was not in favor of a tie-up between two of the nation’s largest carriers.





