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If you're heading to Sea-Tac Airport, leave early. You can expect a more than an hour delay through security checkpoints.

Officials say summer travel is responsible for the delays.

So far since last Sunday, about 150 passengers on Alaska Airlines have missed their flights.

A Sea-Tac spokeswoman said travelers should get to the airport about two hours early.

More information

Sea-Tac summer travel tips

Sea-Tac flight status

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