Cost-conscious European business travellers helped boost carryings by Norwegian last month.
Europe’s third-largest low-fares airline saw March carryings rise by 27% to almost 2.2 million.
The load factor was up 3.7 percentage points to 87.9% despite a 21% rise in capacity.
However, a strike by Scandinavian pilots in March 2015 affected the figures last year while Easter was in April.
Norwegian chief executive, Bjørn Kjos, said: “We are very pleased that an increasing number of travellers are choosing Norwegian, not least business travellers both on domestic routes in Scandinavia and European routes in general.
“More and more companies are realising it is possible to get quality flights at a low fare and are updating their travel policies to reduce costs without compromising quality.
“In addition, the response to our intercontinental offer continues to increase as we launch new routes and destinations.”
Norwegian plans to add 21 new aircraft this year, including three Boeing 737-800s in March.