THE FLORIDA KEYS MARATHON INTL (KMTH)
Marathon, Florida · Monroe County · 3 miles E of city
Airport information
FAA identifierMTH
ICAO identifierKMTH
Elevation7.3 ft MSL
Latitude24.72629° N
Longitude81.05142° W
Magnetic variation4W
NPIAS categoryGeneral Aviation · Local
Based aircraft66
Annual enplanements91
Planned development (2025–29)$28,504,121
Sectional chartMIAMI
ARTCCMiami Center
Flight ServiceMiami
OwnershipPublicly owned
UseOpen to the public
Activated1944/03
Fuel available100LL, A1+
TowerNON-ATCT
BeaconWG
Landing feeNo
Wind indicatorYes
NOTAM facilityMTH
AttendedALL / ALL / 0800-1800
ManagerMichael Legere
Manager phone305-289-6302
Runways
| Runway | Dimensions | Surface | Details |
|---|---|---|---|
| 07/25 | 5,008 × 100 ft | Asphalt (excellent) | 07: P4L · 25: P4L |
Radio frequencies
| Use | Frequency | Call |
|---|---|---|
| KEY WEST RCAG | 133.5 | — |
| KEY WEST RCAG | 306.9 | — |
| KEY WEST RCAG | 323.1 | — |
| CTAF | 122.975 | — |
| UNICOM | 122.975 | — |
Weather stations
- ASOS · 305-743-8373
Airport remarks
- EXISTED PRIOR TO 1959.
- 48 HR PPR FOR UNSKED PART 121 OPS WITH GTR THAN 30 PAX SEATS.
- NOISE SENS AREA; USE NBAA NOISE ABATEMENT PROC; LCL ORDINANCE RQR ENG RUNUP IN DSGND AREA ON COML OR FBO RAMP FM 2300-0700 & FINES.
- BIRDS ON & INVOF ARPT.
- FOR CD IF UNA TO CTC ON FSS FREQ, CTC MIAMI ARTCC AT 305-716-1731.
- SELF SVC FUEL H24.
- USCBP USER FEE FAC OPEN THUR-MON 0900-1730. CLSD TO ARRS TUE AND WED EXCEPT ON REQ AND APVL BY USCBP. CTC USCBP AT 305-289-2029. SEE SPL NOTICES - U.S. SPL CUST REQUIREMENT.
- 24 HR PPR FOR ACFT EQUIPPED WITH WEATHER MODIFICATION OR GEOENGINEERING EQPT 305.289.6302.
Data from the FAA National Airspace System Resources (NASR) 28-day subscription. For flight planning, always consult current official publications, NOTAMs, and charts.

