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Airlines cancel more than 1,500 US flights on Friday

(CNN) — Major flight cancellations on day two after thunderstorms hit major east coast airports on Thursday It has spread.

As of 9:30 p.m. ET Friday, flight tracking site FlightAware showed that more than 1,500 flights have been canceled in the United States. Newark Liberty International Airport and Reagan National Airport outside Washington were the top airports for cancellations.

On Thursday, airlines canceled 1,248 of his flights nationwide. This is one of the days with the most flight cancellations in the past six weeks. Southwest Airlines canceled his 370 flights, or 9% of Thursday's schedule. Southwest Airlines has delayed another 1,800 flights. That's 46% of what's planned for Thursday.

"This week we are grappling with a variety of weather-related challenges that affect many large businesses across the country," Southwest Airlines said in a statement Friday. I was.

More than 7,700 delays were reported in the US on Friday, according to FlightAware.

A Summer of Flight Discontent

CNN's Pete Muntain analyzes a new air traffic analysis to address the issue of flight cancellations shows where the is most severe. nation.

Airlines have been struggling with flight cancellations and delays this summer as they face staff shortages, bad weather and air traffic control delays.

American Airlines canceled more than 200 flights by Friday afternoon.

Air traffic disruption is also serious in Europe. London's Heathrow Airport and Amsterdam's Schiphol Airport announced moves this week to reduce congestion.

On Thursday, the US Transportation Security Administration screened more than 2.3 million passengers at airport security checkpoints across the country. That's about 87% of the same weekday in 2019.

The US Department of Transportation on Wednesday proposed rules that would expand the circumstances under which airline passengers can receive refunds.

The proposal comes amid a flood of complaints from passengers seeking refunds from airlines since the outbreak of the pandemic.