With JET A pricing broadly stable in May following two months of sharp increases, 100LL, MOGAS, and UL94 continued moving higher nationwide.
National JET A Full Service averaged $8.07 in May, representing an increase of $0.02 (0.3%) compared to April. Excluding Alaska and Hawaii, Lower-48 JET A Full Service averaged $7.97, with no measurable change compared to April.
National 100LL pricing moved higher in May. 100LL Full Service averaged $7.49, an increase of $0.33 (4.6%) compared to April, while 100LL Self Service averaged $6.33, up $0.32 (5.3%), reflecting an approximate 15% savings where self-service options are available.
UL94 Self Service averaged $7.29, up $0.17 (2.4%) in May, while MOGAS averaged $5.36, up $0.30 (6.0%), with both fuels continuing to show limited and highly regional availability nationwide.
Over the past six months, national aviation fuel prices transitioned from relative stability to a period of sustained upward pressure. National JET A Full Service increased from $6.24 in December 2025 to $8.07 in May 2026, an increase of $1.83 (29.3%), while national 100LL Full Service rose from $6.34 to $7.49, an increase of $1.15 (18.1%). Following gradual increases from December through February, both fuel types moved sharply higher beginning in March amid developments in the Middle East. National JET A Full Service pricing climbed from $6.41 in February to $7.64 in March, before reaching $8.07 in May, a nearly 26% increase in just three months. Both JET A and 100LL closed May at their highest prices of the six-month reporting period.
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This report summarizes U.S. aviation fuel price trends for May 2026, based on pricing data collected directly by iFlightPlanner from 3,350 fixed base operators (FBOs) and fuel service providers (FSPs) across the United States. All prices reflect reported retail prices at the time of confirmation. This data is distributed to leading aviation organizations and platforms, including the Aircraft Owners and Pilots Association (AOPA), AeroQuote, Hamilton AI, SkyVector, PilotGPT, SurfOS, CharterHub, and more.
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