That was slower than the 10.9% growth recorded in April, however, IATA notes that this was still well ahead of the 5-year and 10-year average growth rates.
Capacity climbed 6.1%, and load factor rose 1.2 percentage points to 80.1%, which was a record high for the month.
All regions, excluding the Middle East and North America, posted record-high May load factors.
After adjusting for inflation, airfares at the start of the second quarter were around 6% lower than a year ago.
IATA estimates that this contributed to around two-fifths of the annual growth in passenger traffic seen in May.
However, the degree of fare stimulus is around half that seen in the second half of 2016. This stimulus is likely to fade further in light of rising airline cost pressures, while business confidence has softened.
However, passenger demand is likely to remain well supported during the upcoming peak travel months of July and August.
Alexandre de Juniac, director general and CEO of IATA, commented: “Passenger demand is solid. And we don’t foresee any weakening over the busy summer months in the Northern Hemisphere. But the rising price of fuel and other input costs is likely to see airlines’ ability to stimulate markets with lower fares taper over the coming months. In parallel, rising trade protectionism and barriers to travel are worrying trends that, if unchecked, could impact demand. As a business airlines depend on borders that are open to trade and people.”
Go to http://www.iata.org for more.