What Terminal is Scandinavian Airlines at ARN? Scandinavian Airlines (SAS) operates primarily from Terminal 5 at Stockholm Arlanda Airport (ARN). Known for its efficient check-in services and comfortable lounges, SAS ensures a smooth experience for travelers flying to destinations across Europe, Asia, and North America. Terminal 5 at ARN offers a variety of amenities, including dining, shopping, and rest areas, making it a convenient choice for passengers. Scandinavian Airlines passengers can also enjoy quick connections and streamlined boarding processes at this terminal.