What Terminal is Alaska Airlines at lax. Modern amenities at this facility guarantee a smooth travel experience. Customers traveling on Alaska Airlines can check in at Terminal 6, which has an abundance of stores, a variety of eateries, and quick security checkpoints. For even more comfort, Terminal 6 provides qualified passengers with convenient access to Alaska Airlines' first-class lounge. The fact that Alaska Airlines is located in Terminal 6 at LAX simplifies travel arrangements, regardless of your destination.