(CNN) — Massive flight cancellations spilled over into the second day after thunderstorms hit major airports on the East Coast on Thursday.
As of 2:00 p.m. ET on Friday, flight tracking site FlightAware showed that more than 1,100 flights in the United States had been canceled. Once again, New York’s LaGuardia, Newark Liberty International and Reagan National Airport outside of Washington, DC led in cancellations.
Airlines canceled 1,248 flights nationwide on Thursday, the second-worst day for flight cancellations in the past six weeks. Southwest Airlines canceled 370 flights, or 9% of its Thursday schedule. Southwest delayed an additional 1,800 flights, or 46% of its Thursday schedule.
“We are working through a variety of weather-related challenges affecting a number of our larger operations across the country this week,” Southwest Airlines said in a statement Friday.
Airlines have been grappling with flight cancellations and delays this summer as they grapple with staff shortages, extreme weather conditions and delays in air traffic control.
American Airlines had canceled more than 200 flights Friday noon.
The U.S. Transportation Security Administration screened more than 2.3 million passengers at airport security checkpoints nationwide on Thursday, about 87% of the same weekday in 2019.
The US Department of Transportation on Wednesday proposed a rule that would expand the circumstances under which airline passengers can get refunds.
The proposal comes amid a flood of complaints from passengers demanding refunds from airlines since the start of the pandemic.
Top image: Planes on the tarmac at LaGuardia Airport in New York, Aug. 2, 2021. (Angus Mordant/Bloomberg/Getty Images)