More than 1,500 flights in the US canceled as thunderstorms hit the Northeast

More than 2,600 flights have been canceled and nearly 7,900 have been delayed across the United States on Sunday, according to data from FlightAware.

Airports across the Northeast are experiencing the most disruption, as thunderstorms hit the region during the day, according to the Federal Aviation Administration.

New Jersey’s Newark Liberty International Airport is experiencing the most significant cancellations, with 362 flights being canceled and 337 flights experiencing delays, according to FlightAware.

John F. Kennedy International Airport has seen 318 canceled flights and 426 delayed flights. Additionally, 270 flights have been canceled at LaGuardia Airport with 292 delayed, and 259 flights canceled and 459 delayed at Boston Logan International Airport, FlightAware data shows.

JetBlue is seeing a significant impact, with 27% (283) of flights canceled and 43% (445) delayed. Regional carrier Republic Airways is also seeing an impact with 32% (320) of flights canceled and 20% (201) delayed, according to FlightAware.

Regional carrier Endeavor Air, a Delta subsidiary, sees 26% (174) of flights canceled and 18% (122) of flights delayed.

“Slow-moving thunderstorms will cause delays this morning into early PM in the Northeast, Midwest, and Southeast,” The FAA said on Twitter Sunday.

In the Northeast, more than 56 million people were under a flood watch as heavy rain poured through Sunday morning, causing flooding in parts of Virginia, Pennsylvania and New Jersey.

ABC News’ Julia Jacobo contributed to this report.