The statement added that staffing at air traffic control facilities is now at a 30-year low.
Mary Campbell Jenkins said she was aboard a plane Friday on a tarmac in NY when the pilot announced that connecting flight information was limited "due to a ground stop here at LaGuardia due to the government shutdown". Some arriving flights are also being delayed; the FAA reports an average of 41 minute delays for LaGuardia-bound flights out of Newark International Airport and Philadelphia International Airport. He said the FAA adjusted to meet available staffing by, among other things, rerouting flights and putting more space between planes in the air.
"The results have been minimal impacts to efficiency while maintaining consistent levels of safety in the national airspace system", Martin said in an emailed statement. Neither the FAA nor the National Air Traffic Controllers Association union has said that the delays are due to the shutdown.
Unions representing federal workers said staff shortages were the result of severe stress affecting employees who are not being paid during the shutdown.
The airport recommends arriving 90 minutes before for a domestic departure, two hours for a USA departure, and three hours for worldwide departures. The agency says that many employees are reporting that they are not able to report to work due to financial limitations.
Sarah Nelson, president of the Association of Flight Attendants, said this increases the risks to passengers.
Trump says the two sides have reached a deal on a so-called continuing resolution, which would ensure the government has the money to continue operating until February 15, and that workers will receive back pay as soon as possible.More news: Trump discussed Russian Federation tower deal well into 2016, Giuliani says
The shutdown has meant some federal staff, like air traffic controllers, have been working without pay.
Democratic lawmakers were quick to seize upon the flight disarray as yet another urgent reason that the government shutdown must end immediately.
Travelers were advised to check with their airline for more information.
The move came as the USA government shutdown entered its 35th day, now the longest in United States history. "We were already short-handed in all areas".
TSA has been moving agents to airports where there are shortages, and occasionally consolidating checkpoints, to prevent lines from getting too long.
"We're still showing up, we're doing the best we can", air traffic controller John Murdock told CTV News Channel. "We're concerned they're not fit for duty", she said.
USA lawmakers and the White House faced intensifying pressure Friday to resolve a five-week impasse and reopen government, as the political stalemate has begun to affect the nation's busy airports. "And the longer this goes on, the longer it will take for the air travel infrastructure to rebound".