"We can confirm that a passenger was smoking in the during the flight", A Southwest Airlines spokesperson said in a statement.
It took a group effort of passengers and plane crew to restrain the woman for the next 30 minutes until it landed, on schedule, in Sacramento.
The in-flight outburst started after the female passenger disabled a smoke detector aboard the flight from Portland to Sacramento, and proceeded to smoke onboard, Southwest Airlines confirmed to KOIN 6 News.
"I will kill everybody on this f***ing plane!" she screamed.
CBS 13 Sacramento identified the irate passenger as 24-year-old Valerie Curbelo. "I will kill everybody on this [expletive deleted] plane!"
Flight attendants forced their way in and escorted the woman back to her seat.
High schooler's heroic act helps marathon runner cross the finish line
Pierce is head of cross country at McKinney Boyd High School. "I tried to will my legs to go, but just couldn't". As soon as we got to the finish line, I pushed her out in front of me so she could cross the tape before I did".
She said she was anxious about Cubello, and didn't know why she went to Sacramento. The woman was traveling somewhere between Portland and Sacramento on December 9, and chose to smoke a cigarette in the bathroom, despite being instructed not to for safety purposes.
When asked about threats to kill her fellow passengers, the woman denied she said it. She faces three felony counts of making criminal threats, and remains in the Sacramento County Jail on $75,000 bail.
"Our Crew in command of Flight 2943 traveling from Portland on Saturday afternoon safely landed on-time in Sacramento following an inflight disturbance". Pilots had declared an emergency for priority air traffic control.
"Our reports from flight attendants indicate a customer violated federal laws by both smoking onboard an aircraft and by tampering with a smoke detector in an aircraft restroom", the company said.
'The flight carried 136 customers and a crew of five'.
Curbelo is now being held at Sacramento County Jail.