What Terminal is Alaska Airlines at lax. This establishment's state-of-the-art features ensure the perfect vacation. Passengers flying Alaska Airlines can check in at Terminal 6, which has an abundance of stores, fast security checks, and a choice of dining options. For added comfort, passengers who fulfill the qualifications can enter Alaska Airlines' first-class club through Terminal 6. Travel planning is made simple by Alaska Airlines' position at Terminal 6 at LAX, regardless of your destination.