Southwest Airlines tech issues delay customer check-ins

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CHICAGO — Southwest Airlines is telling its customers to arrive two hours early for flights due to a technical issue.

The airline issued a travel alert Sunday which read:

We are experiencing technology issues today which is requiring us to process Customers manually.  Please arrive to the airport at least two hours prior to your scheduled flight time.  We have teams across the system working diligently to determine a cause.  We appreciate your patience while we work to resolve the issue.

Southwest said the glitch is a nationwide issue.