In July, passenger capacity was 4.9 per cent higher than the month before, and 107.8 per cent higher compared to a year ago.
The group capacity reached 67 per cent of pre-COVID 19 levels during the month.
In July, the group passenger load factor - a measure of how well an airline is filling available seats - reached a new pandemic-high of 87.4 per cent.
The SIA Group noted that this was the second highest monthly passenger load factor in its history, with the highest monthly figure being 87.6 per cent in December 2019.
The cargo load factor fell by 26.7 percentage points year-on-year to 60.5 per cent in July.
SIA resumed services to Shenzhen, China during the month.
The passenger network of the SIA Group covered 99 destinations, including Singapore at the end of July. As of end-July this year, SIA served 73 destinations while Scoot flew to 47 destinations.