Airlines have issued travel waivers to help passengers whose flights into and out of Washington, D.C., were affected following a deadly midair collision on Wednesday.

Before the deadly collision at Ronald Reagan Washington National Airport on Wednesday, Delta Air Lines lobbied Congress to allow more flights into the busy airport, with the support of lawmakers from Georgia.

""DCA is one of the most demanding airports in the world. It also has what’s known as ‘helicopter alley’ with hundreds of police, military, news and rescue helicopters criss-crossing the Potomac River,

The F.A.A. restricted helicopter routes nearby in the aftermath of the Wednesday collision. For some officials, the concerns about clogged airspace were a long time coming.

If changes aren't made, that near-miss becomes a mid-air collision,” one aviation safety expert said. “Unfortunately, that's what we had last night.”

A deadly plane crash over the Potomac River near Washington, D.C. canceled flights to and from Ronald Reagan National Airport overnight. The airport reopened around 11 a.m. Thursday, as the search continues for the 64 people on board the American Airlines plane that collided with a U.

Federal authorities have restricted helicopter flights near Ronald Reagan Washington National Airport. The move comes days after a deadly collision between a passenger jet and a military helicopter.

A day before a deadly collision between a plane and a military helicopter, the FAA says another flight had to abort landing at Reagan due to a nearby helicopter.

Police boats combed the banks of the Potomac River on Friday, moving slowly under rainy skies and scanning the shoreline as investigators sought clues into the midair collision that killed 67 people and raised

A timeline of the tragic collision between a commercial plane and a Black Hawk helicopter over the Potomac River, with insights into the ongoing investigation.

As investigators try to uncover what happened when an airplane and a helicopter collided over the Potomac River, here is the latest information.