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AIRPORT

Florida Keys Marathon International AirportKMTH / MTH

Florida Keys Marathon International Airport serves Marathon, Florida, United States. Its ICAO code is KMTH and its IATA code MTH. The longest of its one runway is 07/25, at 5,008 ft (1,526 m). The field is 5 ft (2 m) above sea level. Local time is America/New York, UTC-5, or UTC-4 with daylight saving.

Published by Overfly · Airport data: OurAirports, 14 Sep 2026 · Last updated 23 Sep 2026

ICAO

KMTH

IATA

MTH

LONGEST RUNWAY

5,008 ft

1,526 m · 07/25

ELEVATION

5 ft

2 m

TIME ZONE

UTC-5

America/New_York

POSITION

24.726°N

81.051°W

Runways

07/255,008 ft · 1,526 mASP

Nearest airports

Naval Air Station Key West/Boca Chica Field KNQX 36 nm35m

Key West International Airport KEYW 40 nm35m

Miami Homestead General Aviation Airport KX51 54 nm35m

Ocean Reef Club Airport 07FA 55 nm35m

Homestead Air Reserve Base KHST 58 nm35m

Miami Executive Airport KTMB 65 nm40m

Miami International Airport KMIA 76 nm40m

Miami-Opa Locka Executive Airport KOPF 82 nm40m

Questions people ask about Florida Keys Marathon International Airport

How long is the runway at Florida Keys Marathon International Airport?

The longest runway, 07/25, is 5,008 ft (1,526 m), surface ASP.

What is the elevation of Florida Keys Marathon International Airport?

5 ft (2 m) above mean sea level.

What time zone is Florida Keys Marathon International Airport in?

America/New York: UTC-5, or UTC-4 with daylight saving.

What are the codes for Florida Keys Marathon International Airport?

ICAO KMTH, IATA MTH. It serves Marathon, United States.

How far can you fly from Marathon?

Open the mapper with a 7,300 nm range ring around KMTH, then pick your own aircraft, add a route and check every leg.

Open KMTH in the mapper

For reference and planning interest. Not for operational flight planning. Runway and elevation data from OurAirports; check current charts and NOTAMs before any flight. © 2026 Overfly.Flights