Over the past 31 days, the cheapest Jet-A at KMTH has fallen by $0.27/gal (2.5%), moving from $10.81 to $10.54. Over that window it ranged between $10.34 and $10.88 — a $0.54/gal swing.
100LL Price History at KMTH
▼ −$0.42
May 20Jun 19
Over the past 31 days, the cheapest 100LL at KMTH has fallen by $0.42/gal (3.9%), moving from $10.67 to $10.25. Over that window it ranged between $10.25 and $10.80 — a $0.55/gal swing.
About The Florida Keys Marathon International Airport
The Florida Keys Marathon International Airport (KMTH) is located in The Florida Keys Marathon, . There are 1 Fixed Base Operators at this airport offering fuel and services. The current best Jet-A price is $10.54/gallon at Million Air Florida Keys.Prices are updated daily and may vary.
KMTH Fuel Price FAQ
How much does Jet-A fuel cost at KMTH?
The cheapest Jet-A at The Florida Keys Marathon International Airport (KMTH) is $10.54/gal at Million Air Florida Keys. 1 FBO reports Jet-A here. Last updated June 19, 2026.
How much does 100LL avgas cost at KMTH?
The cheapest 100LL at The Florida Keys Marathon International Airport (KMTH) is $10.25/gal at Million Air Florida Keys. Last updated June 19, 2026.
How many FBOs are at KMTH?
The Florida Keys Marathon International Airport (KMTH) in The Florida Keys Marathon, has 1 FBO listed, 1 of which currently report fuel prices.
Are fuel prices at KMTH going up or down?
Over the past 31 days the cheapest Jet-A at KMTH has fallen 2.5% to $10.54/gal (ranging $10.34–$10.88).
How often are KMTH fuel prices updated?
Fuel prices at KMTH are refreshed daily from AirNav FBO reports. The latest update was June 19, 2026. Always confirm with the FBO before fueling, as posted prices can change.