The Federal Aviation Administration says it halted all flights at Ronald Reagan Washington National Airport for a time Tuesday because of a security threat.

The Federal Aviation Administration said Tuesday it issued a ground stop for traffic at Reagan Washington National Airport over a security issue. FlightRadar24, an flight tracking site, said the issue was due to an unconfirmed threat against a United Airlines airplane that had been moved away from other aircraft at the airport.

Early Friday evening, there had been 91 delays at BWI and 22 cancellations, according to flight tracking and aviation data company FlightAware. Dulles had 76 delays and 22 cancellations. Ronald Reagan had 323 delays and 138 cancellations.

Washington state Rep. Dan Newhouse plans to visit the Tri-Cities Airport Thursday to learn more about the impacts of the government shutdown on the airport.

The Federal Aviation Administration on Tuesday halted traffic at Reagan Washington National Airport after a reported threat against a United Airlines plane. The FAA said operations were halted after a reported security issue and passengers have been taken off the plane,

Passengers were forced to deboard a plane that landed before walking to buses on the airport tarmac, while the ground stop continued.

It's still unclear whether travel insurance policies will cover these disruptions, especially for flights booked after the shutdown began.

Operations resumed at Reagan Washington National Airport on Tuesday after a brief halt due to a bomb threat against a United Airlines plane.

Air travelers at San Diego International Airport are advised to check their flight status before arriving due to potential flight disruptions caused by the FAA’s order to reduce flights up

A United Airlines flight from Houston’s Bush Airport was evacuated at Reagan National, prompting a ground stop in Washington, D.C.