Numerous problems at American Airlines caused flight cancellations to nearly double in June, writes Ellie Rushing for The Philadelphia Inquirer.

The airline, which operates 70 percent of its flights at Philadelphia’s airport, had 3.43 percent of its flights cancelled that month, the highest cancellation percentage of any major airline.

There were more than 330 cancellations of departures and arrivals in Philadelphia in June 2019, representing a 93 percent increase in cancellations compared with June 2018, which had a 1.6 percent cancellation rate, according to MasFlight, a flight data analytics group.

The airline blames its legal battle with its mechanics union, which affects overtime work.  American’s pilot union says the airline’s scheduling system is outdated.

“High numbers of aircraft out of service and severe weather events in our hubs and gateways over the past several weeks have taken a toll on our operation,” said Andrew Trull, spokesperson for American.

American is the second largest operator of the Boeing 737 MAX aircrafts, which the airline announced will remain grounded through Nov. 2. That led to 115 flight cancellations per day, but those were anticipated and passengers were accommodated with new itineraries.

Read more about American’s cancelled flights here.

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