The ground stop is expected to stay in effect until 0330 GMT and has a medium probability of an extension
All SkyWest Airlines flights were grounded for 21 minutes on Friday night at the request of the airline, according to the US Federal Aviation Administration.
A ground stop advisory was issued at 0149 GMT and canceled at 0210 GMT, according to the FAA.
More details were not available. SkyWest did not immediately respond to a request for comment.
SkyWest is the largest US regional airline, operating flights for United Airlines, Delta Air Lines, American Airlines and Alaska Airlines.