Hundreds of flights were arrested or delayed on the eastern coast of the United States while air traffic controllers were calling during a government shutdown.
The Federal Aviation Administration (FAA) briefly issued a landing stop for arriving flights at LaGuardia Airport in New York before lifting it about an hour later.
The shortage of personnel has also delayed flights at Newark Liberty International in New Jersey and Philadelphia International Airport.
Atlanta International Airport had the worst delays in the United States in 45 minutes or more.
Orlando International Airport and Miami International Airport in Florida have had delays between 16 and 45 minutes.
Delta said about 200 of his flights were delayed in La Guardia and other northeastern airports.
The FAA said it introduced additional staff, increasing the distance between the aircraft and the redirection of traffic, but warned of arrivals flights of nearly 90 minutes in LaGuardia.
About one third of inbound flights to the airport were delayed by late Friday morning, according to FlightAware Tracking Service.
The interruption was a new flash point in political opposition between the House of Representatives, controlled by the Democrats, and President Donald Trump.
The partial suspension of the government, which lasted for 35 days, is the longest in the history of the country,
It affected 800,000 federal workers.
President Trump has announced a temporary suspension of the closure after reaching an agreement with the Democrats on Friday.
The agreement will last until February 15th.
The closure was triggered by a controversy over the Trump's plan to build a wall on the US-Mexico border.
Democrats in the House of Representatives have called for a resumption of the government before any talks with Mr Trump and his Republican allies in the Congress on border security.
Airport breaks came the day after the US Senate rejected two winding-up bills because hundreds of thousands of workers missed a second salary on Friday.
Many employees have been given leave because they face an indefinite wait for their next bundle.
Other airport staff are required to work without pay.
Some federal agencies report much higher levels of absence among workers who do not know when they will be paid.
At least 14,000 employees of the Internal Rescue Service have not appeared at work amid the closure of the government.
Nancy Pelosi, a spokeswoman for Parliament, writes in Twitter that the exclusion "has already pushed hundreds of thousands of Americans into a crackdown."
"Now it also pushes our airspace to the point of refraction."
She called on Mr Trump to "stop threatening the safety, security and well-being of our nation."
The White House said President Trump had been informed of the delays and was watching the situation at the airports.
Trade unions representing federal workers claim that staff shortages are the result of serious stress affecting employees who do not receive pay at the time of closure.
Three major American airlines – American Airlines Group Inc., Co Southwest Airlines and JetBlue Airways Corp. – said on Thursday that the impact of the closure on their business so far has been limited but is approaching a critical point.
The financial position of airlines is closely related to the health of the economy.
Washington-based airlines said they were losing government activity as a result of the closure.