Southwest Airlines grounds all flights amid computer outage

Southwest Airlines grounded flights across the country Tuesday for the second time in less than 24 hours, amid reports of nationwide computer issues.

Air travelers took to Twitter by the thousands with reports of what airline staff reportedly told them was a computer system outage — hours after “intermittent performance issues” with a third-party weather app forced a similar group stop Monday night.

“We are aware of system issues and are working quickly to resolve. We will share more info soon,” Southwest posted on its official Twitter account at 2 p.m. Tuesday.

Airline operations resumed shortly before 4 p.m., Southwest said in a statement.

The carrier attributed Tuesday’s meltdown to “intermittent performance issues with… network connectivity,” and said it had “proactively canceled” about 500 flights because of the disruption.

“We’re working with those Customers to get them to their destinations as quickly as possible,” said spokesman Chris Mainz.

Southwest passengers expressed frustration and confusion over customer service issues and the grounded flights.

The shutdown came after a glitch Monday night prevented “transmission of weather information that is required to safely operate our aircraft,” the airline told Fox Business.

It was not immediately clear whether the two incidents were related.

Southwest flyers expressed confusion on Twitter. Many said the airline informed them their flights were canceled and reported getting cut off from customer services after waiting hours on the line.

“We have a flight scheduled to leave out of GEG (flight 5530) today @ 1:05 and it is suddenly showing as canceled–is this a ‘system issue’ or is it actually canceled?” user @BabaYagaBeads replied to Southwest’s tweet.

“Yo @SouthwestAir WTF!?. You cancel my flight to PHX and every other non stop?” asked user @TaylorGelbrich. “And my calls can’t even go through to customer service. WHAT GIVES?!”

Long lines of travelers are seen at McCarran International Airport in Las Vegas.