MTH

Medium airport · Marathon, United States

Florida Keys Marathon International Airport

Florida Keys Marathon International Airport is a medium airport serving Marathon, United States. Its IATA code is MTH. Its ICAO code is KMTH. It has 1 runway, longest 5,008 ft (ASP). Elevation 5 ft.

IATA MTHICAO KMTH1 runway, longest 5,008 ft (ASP)United StatesMedium airport

No freely licensed photograph of this airport is in our library yet — rather than borrow a picture of somewhere else, this profile leads with its verified facts.

Airport facts

Location	Marathon, United States
IATA code	MTH
ICAO code	KMTH
Type	Medium airport
Runways	1 runway, longest 5,008 ft (ASP)
Elevation	5 ft
Coordinates	24.7260° N, 81.0514° W

Every fact above is taken from the sources listed below; anything no source states is left blank rather than guessed.

Official website: https://www.monroecounty-fl.gov/109/Florida-Keys-Marathon-International-Airp — the airport's own site has the current flight and visiting information.

National parks near this airport

National parks close to Florida Keys Marathon International Airport, by straight-line distance — each link opens its profile on our sister site National Park Profiles.

Curry Hammock State Park · United States · 4.6 miles away
Long Key State Park · United States · 15.8 miles away
Indian Key Historic State Park · United States · 25.0 miles away
San Pedro Underwater Archaeological Preserve State Park · United States · 25.2 miles away
Lignumvitae Key Botanical State Park · United States · 25.2 miles away
Windley Key Fossil Reef Geological State Park · United States · 32.4 miles away

Airports nearby

The closest airports in this library, by straight-line distance.

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Key West International Airport

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OCAOcean Reef Club AirportMedium airport · United States

Ocean Reef Club Airport

United States · OCA

63.9 miles away

HSTHomestead Air Reserve BaseMedium airport · United States

Homestead Air Reserve Base

United States · HST

67.2 miles away

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Frequently asked questions

What is the airport code for Florida Keys Marathon International Airport?

Florida Keys Marathon International Airport — its IATA code is MTH and its ICAO code is KMTH.

Where is Florida Keys Marathon International Airport located?

Florida Keys Marathon International Airport serves Marathon, United States. Its coordinates are 24.7260° N, 81.0514° W.

How high is Florida Keys Marathon International Airport?

Florida Keys Marathon International Airport sits at 5 feet above sea level.

Sources

Page last updated 13 November 2026.