DUR and ARN are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. DUR to ARN refers to a flight route from Durban King Shaka Intl Airport to Stockholm Arlanda Airport. While you’re still figuring out your travel plans, it’s not a bad idea to learn the names and codes of other airports around these areas: Stockholm Skavsta Airport (NYO), Stockholm Bromma Airport (BMA), Stockholm Vasteras/Hasslo Airport (VST).