Alaska Airlines says the computer issues that delayed about 20 flights have been resolved.

Airline spokesman Cole Cosgrove says crews are fixing the problems and systems are returning to normal.

No residual delays are expected.

He says that late Wednesday night there were technical problems with several computer systems, including programs for passenger check-in and for pre-flight departure paperwork.

Cosgrove says there could still be some delays during the early morning hours, but no flight cancellations are expected.

Still, the airline advises passengers to check the status of their flight before leaving for airports.

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