📍 Marathon⬆ 5 ft1 runways
KMTH · MTH
The Florida Keys Marathon Airport
24.72610°N
-81.05140°W
ARR / DAY
0
▼
90.0%
DEP / DAY
0
▼
80.0%
The Florida Keys Marathon Airport (KMTH/MTH) is a medium general aviation airport located in Marathon, FL, 90 mi south west of Miami. It features 1 runway measuring 5,008 feet. Roughly 50% of observed flights are cargo operations (FedEx, UPS, and similar). This airport is primarily a cargo gateway.
Safety incidents
Last 7 days · 0 total
Current weather
Latest METAR observation
Temp
32°F
Wind
6 kts
70°
Visib
10+ km
Ceil
—
Runways
1 installed
07/25
5,008 ft × 100
ASP● LITMED
Top carriers
Share of flights
Communications Frequencies
2026-06-11| Type | Freq (MHz) | Hours |
|---|---|---|
| CTAF | 122.975 | — |
| UNICOM | 122.975 | — |
| ASOS | 135.525 | — |
| MARATHON | 122.600 | — |
| OTHER | 122.600 | — |
| KEY WEST | 133.500 | — |
| OTHER | 133.500 | — |
| KEY WEST | 306.900 | — |
| OTHER | 306.900 | — |
| KEY WEST | 323.100 | — |
| OTHER | 323.100 | — |
Airport operations
- ARTCC:
- ZMA
- Mag var:
- 4° W
- Fuel:
- 100LL, A1+
Top routes
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1 routes
| Route | Operator | Flights | Avg enroute |
|---|---|---|---|
MTHFLL Fort Lauderdale, US |
MTN
Mountain AIR Cargo |
1 | 0h 53m |
Pilot & community notes
2 comments from OurAirports (click to expand)
2
Pilot & community notes
2 comments from OurAirports (click to expand)
I_
I_Am_So_Handsome
01/17/2026
Although the name is "International Airport", this airport currently does not have any scheduled airline service.
AL
alfadog
08/31/2010
This was an airport I visited many years ago when I first got my PPL. My best friend had access to a house on the key. Lately I have flown there a couple times on cross-country toward my instrument rating. A nice flight but the FBO was closed each time, I think.
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Updated 21:11 UTC