Alaska Airlines MVP Gold Guest Upgrades are elite perks that allow MVP Gold and higher-tier members to upgrade their flight to a higher cabin class at no additional cost. Passengers can earn MVP Gold status by securing specific elite qualifying mile levels. However, to get an Alaska Airlines MVP Gold guest upgrade, one has to earn 40K, 75K, or 100K miles. To avail more details, contact the customer service of the airline or check out the blog linked here.