There are no reported injuries to crew or passengers.
“The aircraft were in an area that is not under air traffic control. The FAA temporarily paused some flights to the airport as a result of the incident,” said the FAA, which is now investigating the incident.
Seattle-Tacoma International Airport wrote in an X post, that there was minimal impact on airport operations as [the incident] occurred on a taxi lane.
“Passengers are encouraged to check with their airlines if they are flying today,” it added.
Footage circulating on social media showed a plane wing partly wedged into another plane’s tail.
It’s the latest in a string of aviation incidents in the US.
On Saturday, a medical plane carrying six Mexican citizens crashed into a busy Philadelphia neighbourhood.
The FAA said a Learjet 55 crashed after departing from Northeast Philadelphia Airport.
Airlines Flight reported a young girl who was in the US for medical treatment, her mother, and the flight and medical crew were killed in the crash.
Last Thursday, a passenger aircraft operated by an American Airlines subsidiary collided with a Black Hawk helicopter, marking it the deadliest US air disaster in more than 20 years.
American Airlines flight 5342 had 64 people on board, with a further three in the helicopter. All of them were killed in the tragedy.