 The line is solely served by a tourist @-@ oriented service operated by the Norwegian State Railways on behalf of Flåm Utvikling . From May through September , there are nine or ten departures in each direction per day . In the rest of the year , there are four . Fares do not follow the normal fares for NSB and are considerably higher than on other train routes . InterRail tickets are not valid for free travel , but give a 30 percent discount . Travel time varies between 50 and 59 minutes between the end stations . In 2007 , the line was the third @-@ most visited tourist attraction in Norway and carried 547 @,@ 000 passengers in 2010 . The service is provided by push – pull trains consisting of an El 17 at each end and with B3 carriages . The locomotives were built by Henschel in 1987 , with electrical equipment from NEBB . They have a power output of 3 @,@ 000 kilowatts ( 4 @,@ 000 hp ) and a Bo 'Bo ' wheel arrangement . 
