Norwegian boss Jacob Schram has said the airline is "fighting for survival" owing to the slump in demand due to ongoing Covid travel restrictions in Europe.
Just shy of 130,000 passengers travelled with Norwegian in December, down 94% on the same period last year.
Flights operated on a load factor of 52.3%, down 31 percentage points year-on-year. This means the majority of Norwegian’s December flights operated half full, at best.
Total capacity in available seat kilometres and total passenger traffic in revenue passenger kilometres were both down 98% compared to December 2019.
"The pandemic continues to have a negative impact on our business as it has had since March 2020," said Schram.
"At the beginning of last year, Norwegian was headed for a positive result in 2020; instead 2020, has been a very challenging year and we now find ourselves fighting for survival."
Schram said despite low demand in December, Norwegian’s Christmas bookings were "positive", adding the carrier had "succeeded in adapting our operations to the current situation".
Norwegian is currently operating the equivalent of just nine aircraft, mainly on around a dozen Norwegian domestic routes.
"Our goal is to be a financially strong and competitive airline, with a new financial structure, a right-sized fleet, and improved customer offering," said Schram, with reference to the carrier’s efforts to fundamentally restructure its business, which were ongoing prior to the Covid crisis.
Schram said efforts to vaccinate against Covid-19 came as "good news for both the aviation sector and those who want to travel".
"We will be ready to meet the competition for customers after the Covid-19 pandemic," said Schram. "2020 has been a tough year, but we will continue to fight and come out of this crisis as a stronger Norwegian."