Alaska Air Group Inc. expects its earnings for the final months of the year to come in below its previous estimates after reporting third-quarter results that missed Wall Street expectations.

The Seattle-based parent of now-merged Alaska Airlines and Hawaiian Airlines said third-quarter profit was hurt by a summer IT outage that temporarily halted flying and by bad weather, stunting its ability to cash in on rebounding demand.

A fresh IT outage again disrupted Alaska operations on Thursday, forcing the carrier to keep planes on the ground nationwide, the company said.

It reported earnings of $1.05 a share on an adjusted diluted basis, below the $1.09 expected on average by analysts polled by Bloomberg.

Shares in Alaska fell nearly 3% in postmarket trading. The stock is down 28% for the

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