Alaska Airlines is a major US airline and has hubs at Seattle–Tacoma International Airport (its largest), Ted Stevens Anchorage International Airport, Los Angeles International Airport, Portland International Airport, and San Francisco International Airport. They have codeshares with 17 airlines, including at least one airline in each major alliance—Oneworld, SkyTeam, and Star Alliance. One of their best perks is the Companion Fare, which you’ll find a ton of details on below. Check out that article, along with our other reviews, guides, and news about Alaska Airlines and how to maximize your travel with them.