2 JetBlue Planes Collide on Tarmac at Logan Airport in Boston

Two JetBlue Airways planes collided on the tarmac at Boston Logan International Airport early Thursday morning, damaging both aircraft but causing no reported injuries.

JetBlue Flight 777 was entering a de-icing pad lane before taking off for Las Vegas when its left winglet struck the right horizontal stabilizer on the tail of JetBlue Flight 551, which was on an adjacent de-icing pad on its way to Orlando, the Federal Aviation Administration said in a statement.

The collision occurred at 6:40 a.m., the F.A.A. said, adding that the agency would investigate. No passengers or crew members were injured, JetBlue said in a statement.

“Safety is JetBlue’s priority, and we will work to determine how and why this incident occurred,” the company said.

The passengers were moved to other aircraft, the company said, and both flights took off shortly after the incident, flight tracking data showed.

JetBlue has been embroiled in a messy deal to acquire Spirit Airlines. A federal judge in January blocked the $3.8 billion acquisition in an antitrust case brought by the Justice Department.

JetBlue is pursuing an appeal of the court decision but has also told investors that it might seek to back out of the deal.

Frequent close calls between airplanes in the United States, both on the tarmac and in the air, are a sign of an air safety system increasingly under duress.

Last year, the F.A.A. gave more than $100 million to a dozen airports to help prevent accidents after a series of near collisions.

The agency issued a safety alert last March, saying that while its data did not show an increase in incidents, “the potential severity of these events is concerning.”