A scheduling glitch could leave American Airlines passengers stranded for one of the busiest travel times of the year.

Could your holiday flight on American be affected?

Multiple media outlets are reporting that American Airlines is blaming computer issues that allowed all pilots to take vacation over Christmas week.

The union was notified last week that there was an issue with the system through which pilots request and are granted time off, CNBC reported.

Because of the problem, there are thousands of flights in December that could be affected, The Chicago Tribune reported.

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Right now the company is offering pilots 150 percent of their hourly wage to pick up shifts to cover flights, but the Allied Pilots Association has filed a grievance, saying that the offer violates the labor contract between the union and company, The Tribune reported.

There are flights without either a captain, first officer or both, with itineraries from or to Dallas-Fort Worth, Boston, Miami, New York, Philadelphia, Salt Lake City and Charlotte, Bloomberg reported.

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