The two flights, United Airlines Flight 1724 and Delta Air Lines Flight 1070 came too close to each other while arriving at the airport.

The Federal Aviation Administration is investigating a narrowly missed midair collision between a United flight and a Delta flight at Phoenix Sky Harbor International Airport on Saturday, the agency said.

FAA officials say the two planes "landed safely after experiencing a loss of required separation" as they were headed to Sky Harbor.

The Federal Aviation Administration is once again looking into a close call at a major U.S. airport, after two passenger jets narrowly avoided a mid-air collision as they attempted to land in Phoenix.

A United flight from San Francisco and a Delta flight from Detroit came within 425 feet of each other in the sky, according to flight radar data. NTSB guidelines say planes should always stay at least five miles apart.

Two passenger planes came dangerously close to each other near Phoenix Sky Harbor International Airport in the USA. The Federal Aviation Administration (FAA) is currently investigating the incident. The incident took place on Saturday,