Delta Air Lines and Alaska Airlines have announced they are becoming “preferred alliance partners” and customers of both airlines will benefit from being able to use each airline’s lounges and reciprocal frequent flyer benefits. Delta Crown Room and Northwest WorldClub lounge members will receive access to Alaska Airlines Board Room lounges by the end of 2009. Gold and Platinum elite members of Delta SkyMiles and Alaska Airlines Mileage Plan will receive reciprocal upgrades, priority boarding, check-in and seat assignment elite benefits when flying either airline. Northwest WorldPerks and Mileage Plan Gold and Platinum members will continue to receive reciprocal benefits. To celebrate the new partnership, Delta SkyMiles members can earn 1,000 bonus miles on itineraries that include both a Delta Air Lines and Alaska Airlines or Horizon Air flight through Feb. 28, 2009. Codeshare flights are excluded from this offer and registration during the promotional period is required. Visit http://www.delta.com/alaskaoffer