U-S Airways says some passengers missed their flights at the airline's busiest hub because of a problem with a computerized reservation system.
An airline spokesman says no flights were delayed yesterday or canceled, but people missed their flights because of long waits at the ticket counter.
Delays also occurred at Philadelphia's airport and in Boston.
The Charlotte Observer reported that thousands of U-S Airways passengers suffered through long delays and said passengers had not been able to speak to a ticket agent after waiting more than two hours.
By midmorning U-S Airways began encouraging people to go home, saying it was unlikely it could rebook passengers for later flights.
Margaret Pearson and her husband's trip to Las Vegas was delayed by the glitch in Charlotte. It was their first vacation together in five years.