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On June 17, the United States and Iran signed a Memorandum of Understanding (MOU) formalizing a ceasefire and committing both sides to 60 days of negotiations, including the opening of the Strait of Hormuz. Eager markets reacted, and wholesale rates seemed too good to be true. Regional Jet A and SAF averages have started to decrease, while 100LL averages tease the same.Even with the Strait of Hormuz marginally reopened under the MOU, the future is not guaranteed. It has only been two weeks since signing, and both sides have already accused the other of violating it. Iran declared the strait closed once more on June 20th, a claim the U.S. disputed. Companies moving precious oil are likely to proceed with caution until safe passage is certain. It would take months for distribution and pricing to return to pre-war levels - and that is without bumps in the road. While most parties involved have an economic or political interest in the strait reopening, it all depends on how soon a true agreement can be made.Is this the light at the end of the tunnel, a momentary respite or a deceiving mirage in the desert?100LL Avgas The national average of 100LL in the U.S. continued to rise by 19 cents through June to $7.46, though that figure represents the full month, which continued to climb before the MOU. Looking at average FAA region trends, most 100LL prices steadily declined during the second half of June after a continued climb. The Great Lakes and Central regions saw slight increases at the end of the month, but nothing like the tens of cents we've been seeing.FBOs that held off on fuel shipments may have timed resupply well, though this relief could flip on a dime as negotiations evolve. For now, average 100LL shifts held to single digits of cents across all FAA regions in the last two weeks of June.Jet AAll FAA regions saw a decrease in Jet A prices during the second half of June. The national average dropped from $7.93 in May to $7.74. For perspective, national average Jet A prices were sitting at $6.19 in June 2025. If current wholesale rates hold, we may see further decreases over the coming months, though prices could still pull a Rocky Balboa (to be fair, there are only so many ways I can communicate uncertainty).Also consider structural supply constraints facing U.S. refineries. World Fuel sales director Wesley Earl told attendees at the Florida Aviation Business Association in early May that the U.S. Jet A supply had fallen to 45 days as opposed to the typical 105- to 150-day range. While the U.S. is a net oil exporter, domestic refineries are primarily set up to process heavy imported crude, not the domestic light sweet produced via fracking. It would take three to five years to convert existing refineries for domestic production.Since Earl's remarks, domestic production has reached record highs, though that output is serving markets in Europe and Asia. For U.S. FBOs resupplying weekly, margins remain thin.Sustainable Aviation FuelSustainable Aviation Fuel (SAF) saw the most notable decrease over June, landing at a national average of $9.76 and dropping by over 50 cents. According to the IATA Fuel Fact Sheet (Updated June 2026), SAF production doubled in 2025 from 2024 levels. However, production growth is expected to slow in 2026, with SAF expected to represent a modest 0.8% of total jet fuel consumption by year's end.If SAF is derived from feedstock and created through an entirely different process than traditional Jet A, why did prices spike in tandem during the Hormuz crisis? SAF is typically priced as a differential above Jet A, so when Jet A moves, SAF moves with it, regardless of origin. Between book-and-claim structures, drop-in blending ratios and a thin supplier pool, the SAF market still leans heavily on Jet A.For FBOs catering to corporate clients with sustainability mandates, slowed production growth means your immediate challenge may be availability over price.The Big PictureThe first half of June saw aviation fuel markets absorbing the peak of the Hormuz crisis. The second half yielded significantly reduced rates based on a resolution that is still unclear. For fuel buyers, this means June's national averages are a less useful benchmark than usual, though spot trends can offer clearer signals.If negotiations hold, July should tell a much clearer story - knock on wood. If they do not, perhaps May gave a preview rather than a peak.Top Performing AirportsIn honor of EAA AirVenture, here is a fun fact about our top three most-viewed airports in June: all three locations showcase WWII history. Melbourne Orlando operated as Naval Air Station Melbourne, training over 2,200 Navy and Marine Corps pilots in F4F Wildcats and F6F Hellcats. Decatur County operated as Bainbridge Army Airfield, with an original 1943 hangar still standing on the field today. Finally, Miami International served as a WWII Army Air Forces antisubmarine patrol base and Pan American-operated lend-lease ferrying hub before transitioning to civilian control on January 1, 1946.GlobalAir.com's top three most visited airport pages in the past 30 days were:Melbourne Orlando International Airport (KMLB) in Melbourne, FLDecatur County Industrial Air Park (KBGE) in Bainbridge, GAMiami International Airport (KMIA) in Miami, FLTop Performing FBOsThe top three most-viewed FBOs on GlobalAir.com in June give pilots plenty of reasons to fly in. Our top FBO, Northeast Air at Portland International Jetport (PWM), has served as an aviation gateway in Maine since 1969 and remains the state's only Pilatus Authorized Satellite Service Center, arranging full concierge services and providing quick access to Portland's Old Port and coastal Maine. First Class Aviation at Jamestown Regional (JMS) is a 24/7 stop on the Northern Plains corridor between Minneapolis and Billings, with overnight rooms, deicing capability, a 100LL self-serve tank and full-service 100LL and Jet A during operating hours. Rounding out the list, Aero Management at Mansfield Municipal (1B9) operates a no-ramp-fee FBO thirty minutes from Boston and Providence. With on-field dining at Hangar 12 and only minutes from Gillette Stadium, Aero Management is a natural stop for flight departments headed to Foxborough.GlobalAir.com's top three most visited FBO pages in the past 30 days were:Northeast Air @ PWMFirst Class Aviation, Inc. @ JMSAero Management, LLC @ 1B9Congratulations to our top airports and FBOs, and safe fueling everyone! GlobalAir.com's Airport Resource Center and fuel data analyses are based on the prices of over 3,200 Fixed Base Operators (FBOs), reported directly by the FBO to GlobalAir.com. We do not accept fuel price updates from third parties. We hide/exclude FBOs that do not provide a price update or verification at least every 30 days to maintain pilot trust and database accuracy.As a result, GlobalAir.com offers accurate and up-to-date aviation fuel information.
You can review live average fuel prices by FAA region by clicking here. Join us next month for another fuel data analysis and to find out which airports and FBOs have the highest performance on GlobalAir.com's Airport Resource Center.
Learn more about GlobalAir.com's aviation fuel data by contacting Abigail Sheets at
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