The low-cost airline carried 313,316 customers during the peak summer month.
Norweigan said its capacity was 94% lower than last year, while flights that were operated had a load factor of 62.1%.
From 1 July, Norwegian reopened 76 routes and put an additional 15 aircraft into service, throughout the summer frequencies and routes were adjusted due to passenger demand and changing government travel advice and restrictions.
Compared to the same period last year, Norwegian’s total capacity decreased by 94%, while total passenger traffic decreased by 96%. The airline’s load factors were down 27.9 percentage points.
Norwegian chief executive Jacob Schram said: “Passenger demand continues to be rapidly impacted by changing government travel restrictions across different markets.
“We are continuously adapting our network to adjust to these changes as necessary to ensure that we keep vital air routes open and concentrate supply in line with demand.
“The prolonged crisis that has impacted every part of the aviation industry continues to create uncertainty in all markets making the need for a long term liquidity support package even more critical to protect tourism, jobs and international trade.”