Passengers and crew member reported smelling smoke in the cabin, so the pilot of United Airlines Flight 917 had to land in Sioux Falls, S.D.
Passenger Roger Tilton said shortly after the odor spread, the captain announced they would be landing in South Dakota. The Boeing 757 jet was carrying 166 passengers to Sea-Tac Airport.
United Airlines dispatched another plane full of maintenance workers from Chicago to check into the issue. There is still no word on the cause.
Passengers were delay by four hours before reaching their destination. The FAA is investigating the incident.