United spokeswoman Natalie Noonan said Flight 1175 was traveling to Honolulu from San Francisco.
United Airlines flight UA1175 was travelling to Honolulu from San Francisco on Tuesday local time when one of the plane's engines was stripped bare of its paneling.
The plane's pilots followed all required protocols to safely land, United said. It was delivered new to United in January 1996.
The drama on board the Boeing 777-222 began after a loud bang was heard roughly 35 minutes before the flight was scheduled to land in Honolulu.
He later conceded: "That looks bad, plane and simple", as he posted a video of the violently juddering, damaged engine.
Maria Falaschi, a marketing consultant on board, also shared photos - calling it the "scariest flight of my life".
Images posted on social media show the exterior cover of an engine missing as the flight 1175 approaches Honolulu. "It was like rattling and the plane was kind of shaking like boom, boom, boom".
"They kept us informed", said Sudiacal, who was traveling with her husband, 4-month-old son and parents-in-law. "The aircraft taxied to the gate and passengers deplaned normally", the statement read. There is no impact on airport operations or runways and there was no report of injuries. "It was scary. But they did a really good job".
The pilot reportedly said: "If you haven't already, roll the firetrucks".
Federal Aviation Administration (FAA) spokesperson said that the pilots felt a vibration in the right engine and even the Aircraft Rescue & Fire Fighting personnel was on standby for precaution, Fox 2 KTVU reported.