U.S. inventories of jet fuel reached a seven-year low last month as mounting demand intersected with lower production, federal researchers said in a report Monday.

EIA Jet Fuel

Jet fuel supplies had increased over the summer months as refineries ramped up output to meet rebounding demand for gasoline and distillate fuels. Refiners processed more crude to meet that demand, and jet fuel is a byproduct of oil refining.

However, the U.S. Energy Information Administration (EIA) said refiners tapered output during the fall, in part because of hurricane-induced outages. Driven by mounting air travel trends, demand for jet fuel quickly surpassed production.

“This increased demand, along with reduced production, has caused inventories to decline,” EIA researchers said.

Stockpiles of the...