The crew of a Cathay Pacific flight saw what it believes was North Korea's latest missile test last week, the second airline to report sighting it.

Cathay said Monday that the flight from San Francisco to Hong Kong reported witnessing the apparent re-entry of the ICBM that North Korea launched before dawn Wednesday.

The missile was far from the plane, and operation was unaffected, Cathay said, adding that it had informed other carriers and relevant authorities.

"At the moment, no one is changing any routes or operating parameters," the Hong Kong-based airline said in a statement. "We remain alert and (will) review the situation as it evolves."

The North Korean missile was fired very high up, reaching an altitude of 4,475 kilometers (2,780 miles) before falling back into the Sea of Japan about 950 kilometers (600 miles) from where it was launched. It was in the air for 53 minutes.

The Hwasong-15 intercontinental ballistic missile demonstrated a greater range than other missiles North Korea has tested. One expert estimated its range at more than 13,000 kilometers (8,100 miles) if launched on a standard trajectory, which would put Washington, D.C., within reach.

Korean Air pilots on two different planes also reported seeing flashes of light believed to be the North Korean missile when they were flying over Japan, airline spokesman Cho Hyun-mook said.

The flights, one from San Francisco and the other from Los Angeles, were both headed for Incheon, the main airport serving Seoul, South Korea.