The line is dominated by the ore freight trains operated by LKAB's subsidiary Malmtrafik from their mines to the Port of Narvik and the Port of Luleå. In addition, SJ operates passenger trains and CargoNet operates container freight trains. The Iron Ore Line is single track, electrified at and has a permitted axle load of . The Swedish part of the line is the northernmost railway in Sweden and the Norwegian part outside Narvik is the northernmost railway in the whole of Western Europe at 68.452°N.