Allegiant Air says a flight from Las Vegas to Missoula, Mont., was diverted after a light warned of a problem with the plane's hydraulic system.
The flight on Friday was diverted to West Wendover, Nev., a city along Interstate 80 on the Nevada-Utah line.
Allegiant spokeswoman Jessica Wheeler says the crew landed the plane safely, and passengers were transferred to a different plane, which completed the trip to Missoula.
That flight arrived in the Montana city about six hours later than originally scheduled.
Wheeler says there was a report of an unidentified odor in the cabin, but all 146 passengers and six crew members aboard weren't affected.
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