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U.S. Aviation Fuel Prices Reached Six-Month Highs in September 2026

National aviation fuel costs rose significantly during September 2026, pushing both 100LL and Jet A to new peaks across the United States.

· 2 min read

U.S. Aviation Fuel Prices Reached Six-Month Highs in September 2026
Photo: Ron Kaplan / AVweb

iFlightPlanner released its latest tracking report detailing nationwide pricing trends, fuel savings opportunities, and six-month increases. The data encompasses numbers gathered straight from 3,370 FBOs and fuel vendors throughout the country. This information is shared with multiple platforms and industry organizations, such as AeroQuote, SkyVector, CharterHub, Hamilton AI, the Aircraft Owners & Pilots Association, SurfOS, and PilotGPT.

According to the findings, nationwide full-service 100LL averaged $7.75, showing a rise of $0.21 or 2.8 percent over August figures. Self-service 100LL national averages reached $6.67, growing by $0.16 or 2.5 percent. Pilots opting for self-service options realized roughly 14 percent in savings where available, marking an increase from the approximately 9 percent savings recorded in August.

Jet A full-service pricing across the country averaged $8.36 during September, marking a $0.39 or 4.9 percent jump compared to the previous month. When excluding Alaska and Hawaii, lower-48 full-service Jet A averaged $8.31, which is a $0.40 or 5.1 percent increase from August. Additionally, company officials noted that self-service UL94 rose by $0.20 to average $7.68, while Mogas went up by $0.04 to average $5.61.

These price hikes follow a continuous upward trend lasting three consecutive months from July through September, following spring highs in May and a subsequent drop in June. Over a six-month window, national fuel costs stayed high due to the ongoing war in Iran, driving both main fuel categories to new peaks. National full-service Jet A climbed from $8.05 in April up to $8.36 in September, representing a 3.9 percent increase of $0.31. Meanwhile, full-service 100LL grew from $7.20 to $7.75, reflecting a 7.6 percent rise of $0.55. Over a longer timeframe, data indicates that full-service Jet A has jumped 32.7 percent since January, while full-service 100LL has climbed 21.7 percent.

Sources: AVweb, General Aviation News