Delta Air Lines estimates that it lost $200 million due to the longest government shutdown on record. CEO Ed Bastian says refunds increased and bookings slowed during the 43-day shutdown, leading to a loss of about 25 cents per share.

Airlines and aviation regulators warned that flight disruptions are likely to continue even after the government reopens. Thousands of flights have been cancelled as air traffic restrictions ramp up.

 Air travelers could face more frustration as U.S. airports need to meet a higher FAA target for reducing flights. The FAA ordered airlines to drop 4% of flights at 40 major airports due to staffing issues.

The Federal Aviation Administration will reduce air traffic at many busy airports to maintain safety during the government shutdown, which has led to staffing shortages of air traffic controllers.

Far-Flung Postcards is a weekly series in which NPR's international team shares moments from their lives and work around the world.

Record numbers of Americans are expected to fly around the July Fourth holiday, posing a big test for America's fragile air travel system — and for Newark Liberty International Airport in particular.

U.S. Transportation Secretary Sean Duffy praised airport officials, unions and workers for completing the estimated 60-day project 13 days early. The Newark airport has been hobbled by delays.

At times Monday evening, as few as three air traffic controllers per hour were lined up to monitor via radar the planes flying into and out of the airport, the Federal Aviation Administration said.

The transportation secretary announced a far-reaching plan to drastically overhaul the current technology used by thousands of controllers responsible for guiding planes in and out of airports.

Hundreds of flight delays and cancellations at Newark's airport over the past several days are giving passengers headaches and spurring promises to improve the nation's air traffic control system.

Transportation Secretary Sean Duffy says he will ask Defense Department officials why an Army Black Hawk helicopter violated flight restrictions at Ronald Reagan Washington National Airport.

A Delta passenger plane and an Air Force jet flew narrowly close to one another outside Washington, D.C., on Friday, prompting a collision warning and "corrective instructions" from air traffic controllers.

Thousands of homes lost power and about 150 people had to be evacuated after a transformer within an electrical substation caught fire in west London.

The walkout, which reportedly took place with only about a half-hour advance notice, came before a broader series of preannounced strikes across 13 airports in Germany on Monday.

NPR's reporting will continue to focus on what happened and learning what we can about the victims and telling their stories.