Hitch a free ride to the airport with Uber, before Christmas

SEATTLE -- Thanks to a special promotion from Alaska Airlines, travelers leaving Sea-Tac International Airport can hitch a free ride to the airport, with Uber.

Trips up to $50 are covered in the promotion - holiday travelers must pay the difference. This offer is open to passengers on any airline, and it's only for departures -- not arrivals.

Passengers must use the Uber phone app to reserve their ride. UberBLACK, the limousine service, and ride-share service UberX  are both participating.

This promotion runs today (Monday) through Christmas Eve and a reservations are required, since limited Ubers are available.