1
Runway
7
Frequencies
0
Procedures
2
NOTAMs
Quick Facts
ICAO
KMTH
FAA
MTH
Elevation
7.3 ft MSL
Runways
1
Frequencies
7
Tower
No
Fuel
100LL,A1+
Coordinates
24.726, -81.051
Airport Information
Facility Type
AIRPORT
Elevation
7.3 ft MSL
Control Tower
No
Fuel Types
100LL,A1+
ARTCC
MIAMI
Coordinates
24.7263, -81.0514
Ownership
Public
Hours of Operation
Current Weather
METAR KMTH 131853Z AUTO 00000KT 10SM FEW025 BKN046 OVC060 26/24 A2990 RMK AO2 RAE43 SLP125 P0072 T02610239
Flight Category
VFR
Wind
0° at 0 kt
Visibility
10+ SM
Temperature
26.1°C
Dewpoint
23.9°C
Altimeter
1012.60 inHg
Cloud Cover
OVC
Observed 2026-05-13 18:53Z
Forecast (TAF)
TAF KMTH 131857Z 1319/1418 28008KT P6SM SCT025 BKN050 FM132100 26010G19KT P6SM SCT025 FM141200 27008KT P6SM FEW025
Valid 2026-05-13 19:00Z – 2026-05-14 18:00Z
Runways
| ID | Length | Width | Surface | Lights |
|---|---|---|---|---|
| 07/25 | 5,008 ft | 100 ft | ASPH | MED |
Frequencies
| Type | Frequency | Name |
|---|---|---|
| CTAF | 122.975 | THE FLORIDA KEYS MARATHON INTL |
| KEY WEST RCAG | 306.9 | KEY WEST |
| KEY WEST RCAG | 323.1 | KEY WEST |
| KEY WEST RCAG | XXX.XXX | KEY WEST |
| MARATHON RCO | XXX.XXX | MARATHON |
| MTH ASOS | XXX.XXX | - |
| UNICOM | XXX.XXX | THE FLORIDA KEYS MARATHON INTL |
Active NOTAMs
A0023/26
2026-05-13 12:22 – 2026-05-20 20:00
MTH 26/001
2026-05-07 21:50 – 2026-08-05 04:00
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KMTH Operational Overview
Location & Facility
THE FLORIDA KEYS MARATHON INTL (KMTH) is a publicly owned airport open to the public located in MARATHON, Florida, United States. The field sits at an elevation of 7.3 feet above mean sea level (MSL) at coordinates 24.7263°N, 81.0514°W.
Runways
THE FLORIDA KEYS MARATHON INTL has 1 runway. The longest runway (07/25) measures 5,008 feet by 100 feet with a asph surface.
Communications & Operations
THE FLORIDA KEYS MARATHON INTL is a non-towered (pilot-controlled) field. A total of 7 communication frequencies are published for this facility.
Services & Fuel
THE FLORIDA KEYS MARATHON INTL offers 100LL,A1+ fuel. Pilots planning fuel stops should confirm availability with the FBO, as hours and pricing may vary.
Current Conditions
The current flight category at THE FLORIDA KEYS MARATHON INTL is VFR (Visual Flight Rules — good flying conditions). Weather conditions are updated in real-time from official NOAA Aviation Weather Center observations. There are currently 2 active NOTAMs for this facility.
Frequently Asked Questions
What is KMTH?
KMTH is the ICAO identifier for THE FLORIDA KEYS MARATHON INTL, a public-use airport located in MARATHON, Florida, United States.
How many runways does THE FLORIDA KEYS MARATHON INTL have?
THE FLORIDA KEYS MARATHON INTL (KMTH) has 1 runway. See the runway table above for dimensions and surface types.
What is the elevation of KMTH?
The field elevation of THE FLORIDA KEYS MARATHON INTL is 7.3 feet above mean sea level (MSL).
Is fuel available at KMTH?
Yes, THE FLORIDA KEYS MARATHON INTL offers 100LL,A1+ fuel.
What are the current weather conditions at KMTH?
The current flight category at THE FLORIDA KEYS MARATHON INTL is VFR. See the METAR section above for full decoded weather data including wind, visibility, temperature, and altimeter.
Are there active NOTAMs at KMTH?
There are currently 2 active NOTAMs for THE FLORIDA KEYS MARATHON INTL. Sign up for AeroCopilot to read decoded NOTAM text and AI interpretations.
How do I access complete data for KMTH?
Sign up for a free AeroCopilot account to access all frequencies, full NOTAM text with AI interpretation, decoded forecasts, and IFR procedure charts for THE FLORIDA KEYS MARATHON INTL.
Where is THE FLORIDA KEYS MARATHON INTL located?
THE FLORIDA KEYS MARATHON INTL (KMTH) is located in MARATHON, Florida, United States, at an elevation of 7.3 ft MSL.