U.S. aviation fuel prices climbed sharply in September 2026, with increases across both 100LL and Jet A nationwide.
According to the latest figures from iFlightPlanner, 100LL prices across the nation averaged $7.75, an increase of $0.21 (2.8%) compared to August.
Meanwhile 100LL Self Service averaged $6.67, up $0.16 (2.5%), reflecting an approximately 14% savings where self-serve options are available, up from approximately 9% in August.
National Jet A Full Service prices averaged $8.36 in September, representing an increase of $0.39 (4.9%) compared to August. Excluding Alaska and Hawaii, Lower-48 Jet A Full Service averaged $8.31, up $0.40 (5.1%) compared to August.
UL94 Self Service averaged $7.68, up $0.20 (2.7%) in September, while Mogas averaged $5.61, up $0.04 (0.7%), according to company officials.
Regional Highlights
- South: 100LL Full Service averaged $7.72, up $0.26 (3.4%), while 100LL Self Service averaged $6.57, up $0.22 (3.5%).
- Southwest: 100LL Full Service averaged $7.49, up $0.25 (3.4%), while 100LL Self Service averaged $6.34, up $0.19 (3.1%).
- Eastern: Jet A Full Service averaged $8.69, up $0.57 (7.0%), the largest month-over-month increase among Lower-48 regions.
- Great Lakes: Jet A Full Service averaged $7.94, up $0.47 (6.4%), while Jet A Self Service increased $0.27 (4.7%).
Six-Month Overview
Over the past six months, national aviation fuel prices remained elevated as the war in Iran continues, with both fuel types reaching new highs in September.
National Jet A Full Service increased from $8.05 in April to $8.36 in September, an increase of $0.31 (3.9%), while national 100LL Full Service rose from $7.20 to $7.75, an increase of $0.55 (7.6%).
After reaching spring highs in May and easing in June, both fuel types increased for three consecutive months from July through September.
Looking further back, Jet A Full Service has increased 32.7% since January, while 100LL Full Service has risen 21.7%, according to iFlightPlanner data.
About This Report
This report summarizes U.S. aviation fuel price trends for September 2026, based on pricing data collected directly by iFlightPlanner from 3,370 FBOs and fuel service providers across the United States.
This data is distributed to leading aviation organizations and platforms, including the Aircraft Owners & Pilots Association (AOPA), AeroQuote, Hamilton AI, SkyVector, PilotGPT, SurfOS, CharterHub, and more.
- Total Reporting FBOs and Fuel Service Providers: 3,370
- FBOs and FSPs Reporting within the Last Seven Days: 1,785 (53%)
- Average Age of All Reported Prices: 8.6 days
For more information: iFlightPlanner.com/api/BusinessData
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