SEATTLE, WA – Alaska Airlines and Icelandair have entered into a codeshare agreement and frequent flier partnership, which will give customers easier connections and more ways to earn benefits when fl SEATTLE, WA – Alaska Airlines and Icelandair have entered into a codeshare agreement and frequent flier partnership, which will give customers easier connections and more ways to earn benefits when flying between the US and Europe. With the new codeshare agreement, to take effect Nov. 1 pending government approval, customers flying on Alaska Airlines and Icelandair will enjoy seamless reservations and ticketing, one-stop check-in, baggage checked to its final destination, coordinated flight schedules, the ability to earn miles and/or points on the reciprocal airline and consistent passenger service standards.