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Florida Keys Marathon International Airport

MTH · KMTH · Marathon, FL · 5 ft elevation · var 4W · Towered

Airport information

ICAO / IATA
KMTH / MTH
Coordinates
24.7260, -81.0514
Elevation
5 ft MSL
Magnetic variation
4W
Sectional chart
MIAMI
Airport use
Public
Control tower
Yes
ARTCC
MIAMI (ZMA)
Flight service (FSS)
MIAMI
NOTAM facility
MTH
Attendance
ALL 0800-1800
Beacon
white-green (SS-SR)
Segmented circle
Yes
Wind indicator
lighted
Activated
1944/03
Distance from city
3 E

Weather

METAR observed

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TAF forecast

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Sun & FAA night 2026-06-20

EventLocal (EDT)UTC
Morning civil twilight
Loggable night ends
06:10 AM10:10Z
Sunrise06:36 AM10:36Z
Sunset08:16 PM00:16Z
Evening civil twilight
Loggable night begins
08:42 PM00:42Z
Loggable night (§1.1)
08:42 PM → 06:10 AM
Night currency (§61.57)
09:16 PM → 05:36 AM

Plan a flight from KMTH

Runway 07/25

5,008 ft × 100 ft · Asphalt (Excellent)

Edge lights: Med. Weight bearing: Single wheel 62k, Double wheel 100k, Dual tandem 182k.

07
Heading
071° mag · 67° true
Markings
nonprecision
VGSI
4-light PAPI (left) (3°)
Traffic pattern
Left
25
Heading
251° mag · 247° true
Markings
nonprecision
VGSI
4-light PAPI (left) (3°)
Traffic pattern
Left

Communication frequencies

ServiceFrequencyNotes
ASOS135.525
CNTR133.5MIAMI CNTR
RDO122.6MIAMI RDO
UNIC122.8CTAF/UNICOM

Nearby navigation aids

NavAidTypeFreqRadial / Dist magnetic
NQX · Key WestTACAN113.10r078° / 35.5 NM

Airport diagram

Open PDF ↗
Preview diagram Open the airport diagram PDF

Approaches

Chart Supplement FAA A/FD

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Preview Chart Supplement Open the Chart Supplement PDF

Services

Fuel available
100LL, Jet A-1 (additive)
Bottled oxygen
HIGH/LOW
Bulk oxygen
HIGH/LOW
Airframe service
MINOR
Powerplant service
MINOR
Parking
tiedowns
Other services
Agricultural, Instruction, Rental, Aircraft sales

Ownership & management

Owner
MONROE COUNTY
500 WHITEHEAD ST, KEY WEST, FL
305-296-5439
Manager
MICHAEL LEGERE
9400 OVERSEAS HWY SUITE 200, MARATHON, FL
305-289-6302

Remarks FAA

  • 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.
  • ACFT MUST USE TWY A4 FOR RWY 25 FULL LEN DEP, NO RWY ACES BYD TXY A4.
  • ACTVT REIL RWY 07; PAPI RWY 07 & 25; MIRL RWY 07/25 - CTAF.
  • AFT HR JET-A FUEL - 305-481-7615.
  • PCR VALUE: 200/F/A/X/T

Weather is live from the Aviation Weather Center; airport facility data is from the FAA NASR (28-day cycle). For planning and education only; always verify against official sources. Open KMTH in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator.