Oil and jet fuel prices both reached four-year highs during October, but have fallen back sharply since, IATA said in its latest financial monitor. 
The Brent crude benchmark is around 20% lower than its early-October peak at around $69 for a barrel.
Oil prices have fallen back sharply since, as the market has reassessed near-term supply-demand dynamics. 
“Indeed, oil markets posted their longest ever losing streak in early November, with the Brent crude benchmark price falling for 10 out of 11 trading sessions. At the time of writing, Brent was around 20% lower than its early-October peak at around $69/b,” IATA said.
This, IATA said, was still around 8% higher than it stood a year ago. “Nonetheless, there has been a big turnaround from the more than 50% annual growth rates seen just a month ago,” IATA said.
Global passenger yields in dollar terms have continued to move a little higher in recent months, as airlines try to offset some of the pressure from rising input costs through revenues.
The gap between the premium and economy cabin yields, which started to widen around the middle of 2017 – has persisted in the latest monthly data. Yields in the premium cabin are around 3% higher than a year ago.
Premium-class passengers accounted for 5.1% of total international origin-destination traffic in the first eight months of 2018. 
This proportion was unchanged from the same period a year ago.
In terms of revenue, premium-class passengers accounted for 29.6% of total passenger revenues over the first eight months of 2018, broadly unchanged from the outcome for the same period a year ago.
As IATA noted before, premium passenger demand has grown faster than its economy counterpart this year to date most visibly on the Asia-Southwest Pacific and within European markets. 
The largest outperformance of premium fares relative to economy has been in the Europe–Middle East market.
Year-on-year growth in industry-wide revenue passenger kilometres (RPKs) slowed to an eight month low of 5.5% in September.
The slowdown in RPK growth from 6.4% in August may partly reflect weather-related disruption – particularly Typhoon Jebi in Japan.
Nonetheless, it is important to note that the upward trend in seasonally adjusted traffic has moderated over the course of the third quarter. 
Meanwhile, industry-wide FTKs increased by 2% year-on-year in September and by the same pace in the third quarter as a whole. “As we have argued before, the current period of slower growth is typical with the pattern normally seen after inventory-led upturns in the past,” IATA said.