Norwegian managed to improve its load factor in October, even as the addition of long-haul services fed a 36% year-on-year capacity increase.
However, the low-cost carrier's revenue per available seat-kilometres declined 15%, and yield by 16%.
Traffic, as measured in revenue passenger-kilometres, rose 38%, pushing load factor up one percentage point to 79.3%.
Passenger numbers were up 19% at 1.96 million.
Norwegian, which has added two Boeing 787s to a previously all-737 fleet this year, has a total of 80 aircraft in service, compared with 67 at 31 October 2012.
The airline flew 99.7% of its scheduled services in October, and says 89.4% departed on time.
In addition to its short-haul network, it operates long-services to Bangkok and New York.