Overview

• United Flight 2664 departed San Francisco for Baltimore around 9:47 a.m. local time and turned back after crew reported a plastic or burning smell in the cabin.
• The aircraft landed safely at SFO and passengers deplaned at the gate with no injuries reported.
• United canceled the original flight and reassigned customers, with airport schedules showing a later arrival into BWI on a different plane.
• Flight-tracking data identified the aircraft as a Boeing 737 MAX 9 operating the route.
• United has not determined the source of the odor and the cause remains unknown at this time.