The airline carried 688,000 passengers last month.
However, the airline's load factor - or percentage of seats filled - increased as the airline reduced routes and flights.
The load factor was 72%, up from 66.7%, a year earlier.
Passenger numbers on short-haul routes were down 8% to 620,000, with the load factor rising 5.4 points to 77.5%.
The airline's capacity on shorter routes has been reduced by more than 9% over the year.
On longer routes, passenger traffic dropped almost 12% to 68%, with the load factor up 4.2 points to 64.3%.
Capacity on long-haul routes has fallen by 20.7% over the year.
