Tunisia's national carrier Tunisair reported a 22% increase in the number of passengers abroad from January to September 2017, compared with the same period last year, a source from the Tunis Stock Exchange said on Tuesday.

About 2,730,000 passengers went abroad from January to September this year, a 22% increase compared with the same period last year, the source said.

The increase is mainly due to the growth of irregular flights, 6,256 hours of flight during the third quarter of 2017, against 3,212 hours flight for the same period of last year, according to the source.