(NewsNation) — SkyWest Airlines, a partner of multiple major U.S. airlines, was forced to ground all of its planes at the beginning of the busy Labor Day travel weekend.

The Federal Aviation Administration issued a ground stop Friday night, though it wasn't immediately clear what caused the issue. The ground stop was lifted shortly after being issued but it still angered flyers.

"SkyWest which operates my Delta flight from SLC to Tulsa lost network access so my flight was delayed," one traveler wrote on X. "There’s been a lot of airline network access loss this year."

SkyWest Airlines has 500 planes that travel to 268 destinations in North America, according to its website. It's a partner of United Airlines, Delta Air Lines, American Airlines and Alaska Airlines. The airline served more

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