DENVER -- Scores of Frontier Airlines passengers were stranded over the weekend at Denver International Airport.
The Denver-based airline was quick to blame the cancellations on a snowstorm, but leadership from a Frontier employees' union said the airline was to blame.
The Airline Pilots Association said in a letter to its members that Frontier "once again fell on its face."
Frontier's competitors managed to keep planes moving at DIA while the troubled airline's baggage claim area was packed full of stranded travelers and large groupings of luggage from dozens of canceled flights.
Frontier customers, exhausted and fed up, sought out TV news cameras on Sunday to voice their frustrations.
"I'm never going to fly Frontier again," said traveler John Goldsmith, who was trying to get home to St. Louis after waiting in a customer service line for 10 hours.
Frontier said a winter storm and a domino effect of cancellations were the cause of its severe backups. The weather did not have a similar impact on other airlines at DIA.
"My wife has a very important doctor's appointment in Des Moines (on Monday), said a Cedar Rapids, Iowa, man, trying to catch a Frontier flight.
He said his only option might be to pay $500 for last-minute tickets with United Airlines.
"This latest meltdown, while exacerbated by the severe weather, reveals once again the same executive mismanagement and misplaced focus on cost-cutting that has placed Frontier consistently near the bottom of the industry in operational performance and customer satisfaction," the Airline Pilots Association letter read in part.
When pressed for reasons behind the cancellations, a spokesman for Frontier insisted all of cancellations were because of the weather. The airline said late Sunday it is temporarily sending more employees to DIA to help get planes back in the air.