Wondering What Terminal is Alaska Airlines at ORD? Alaska Airlines operates out of Terminal 2 at O'Hare International Airport. This terminal offers convenient check-in counters, TSA security checkpoints, and easy access to gates and amenities. Whether you're arriving or departing, Terminal 2 provides a seamless travel experience with dining, shopping, and lounge options nearby. Alaska Airlines passengers can also enjoy efficient baggage claim services and clear terminal signage.