Police say a man who just missed his flight out Denver got angry and claimed there was a bomb in his luggage, which was already aboard.
Police say a search of the plane turned up no explosives, and the flight took off an hour late for its destination, Salt Lake City.
The incident occurred Saturday. Officials say the plane carrying 54 passengers and crew was on the ground when the alleged threat was made.
Forty-nine-year-old Sergei Berejnoi of Sandy, Utah, was arrested on suspicion of endangering public transportation.
Police say he was taken to the Denver jail. Jail officials say they have no record of him. No phone number for Berejnoi could be located.
SkyWest Airlines, which operated the flight, says the search delayed takeoff by about an hour.