# Florida Keys Marathon International Airport (MTH / KMTH)

**Florida Keys Marathon International Airport** (IATA: MTH, ICAO: KMTH) is a medium airport in Marathon, Florida, United States. It opened in Mar 1944. It has one runway, 5,008 ft (1,526 m) long, asphalt. In 2024 it handled 200 passengers.

Web page: https://dromopedia.com/airports/kmth

## At a glance

- IATA / ICAO: MTH / KMTH
- FAA: MTH
- Type: Medium airport
- Serves: Marathon, Florida, United States
- Opened: Mar 1944
- Elevation: 7 ft / 2 m
- Coordinates: 24.7260, -81.0514
- Runways: 1
- Longest runway: 5,008 ft / 1,526 m
- Instrument procedures: 2 approaches
- Passengers: 200 (2024)
- Time zone: UTC-5/-4 · America/New_York
- Website: https://www.monroecounty-fl.gov/109/Florida-Keys-Marathon-International-Airp
- Wikipedia: https://en.wikipedia.org/wiki/Florida_Keys_Marathon_Airport (7 languages)
- Wikidata: https://www.wikidata.org/wiki/Q5461496
- Weather station: KMTH
- Ident: KMTH

## Timeline

- Mar 1944: Florida Keys Marathon International Airport opens.

## Runways

| Ident | Length | Width | Surface | True headings | Lighted |
| --- | --- | --- | --- | --- | --- |
| 07/25 | 5,008 ft / 1,526 m | 100 ft / 31 m | Asphalt | 067° / 247° | yes |

- FAA airport diagram: https://aeronav.faa.gov/d-tpp/2611/06394AD.PDF

## Passengers per year

| Year | Passengers | Source |
| --- | --- | --- |
| 2015 | 8 | BTS T-100 Segment |
| 2016 | 48 | BTS T-100 Segment |
| 2017 | 29 | BTS T-100 Segment |
| 2018 | 49 | BTS T-100 Segment |
| 2019 | 25 | BTS T-100 Segment |
| 2020 | 79 | BTS T-100 Segment |
| 2021 | 212 | BTS T-100 Segment |
| 2022 | 175 | BTS T-100 Segment |
| 2023 | 63 | BTS T-100 Segment |
| 2024 | 200 | BTS T-100 Segment |

## Routes

1 destination in 1 country. From the airport's Wikipedia article.

### Year-round (1)

- [FLL](https://dromopedia.com/airports/kfll.md) Fort Lauderdale Hollywood International Airport · United States · 109 mi / 175 km · FedEx Express

## Airlines

The figure is how many destinations each airline flies from MTH, as the routes above have them. Hubs from Wikidata.

### Passenger (1)

- FX [FedEx Express](https://dromopedia.com/airlines/fedex-express) · 1

## Rankings

Ranked among 48,075 open airports; = marks a shared place.

| Measure | Value | World | Region | Country |
| --- | --- | --- | --- | --- |
| Passengers | 200 (2024) | #3,568 of 3,974 | #945 in North America | #698 in US |
| Longest runway | 5,008 ft / 1,526 m | =6,324 of 29,858 | =2,170 in North America | =1,766 in US |
| Elevation | 7 ft / 2 m | =42,804 of 43,403 | =19,243 in North America | =15,662 in US |
| Age | Opened 1944 | =2,300 of 15,079 | =1,299 in North America | =1,249 in US |
| Runways | 1 | =4,364 of 29,978 | =2,583 in North America | =2,326 in US |

## Radio frequencies

| Type | Description | MHz |
| --- | --- | --- |
| ASOS | ASOS | 135.525 |
| CNTR | MIAMI CNTR | 133.500 |
| RDO | MIAMI RDO | 122.600 |
| UNIC | CTAF/UNICOM | 122.800 |

## Nearby airports

- [NQX](https://dromopedia.com/airports/knqx.md) Naval Air Station Key West/Boca Chica Field · 41 mi / 67 km
- [EYW](https://dromopedia.com/airports/keyw.md) Key West International Airport · 46 mi / 74 km
- [X51](https://dromopedia.com/airports/kx51.md) Miami Homestead General Aviation Airport · 62 mi / 99 km
- [OCA](https://dromopedia.com/airports/07fa.md) Ocean Reef Club Airport · 64 mi / 103 km
- [HST](https://dromopedia.com/airports/khst.md) Homestead Air Reserve Base · 67 mi / 108 km
- [TMB](https://dromopedia.com/airports/ktmb.md) Miami Executive Airport · 75 mi / 120 km

## Sources

- [BTS T-100 Segment](https://www.transtats.bts.gov/Tables.asp?QO_VQ=EEE&QO_anzr=Nv4%20Pn44vr45): US traffic: Bureau of Transportation Statistics, T-100 Segment (Public Domain (US Government))
- [FAA NASR](https://www.faa.gov/air_traffic/flight_info/aeronav/aero_data/NASR_Subscription/): US airport data: FAA National Airspace System Resources (Public Domain (US Government))
- [NOAA Aviation Weather Center](https://aviationweather.gov/data/api/): Weather data: NOAA Aviation Weather Center (Public Domain (US Government))
- [OurAirports](https://ourairports.com/data/): Airport data from OurAirports (Public Domain)
- [Wikidata](https://www.wikidata.org): Structured data from Wikidata (CC0 1.0)
- [Wikipedia: “Florida Keys Marathon Airport”](https://en.wikipedia.org/w/index.php?title=Florida_Keys_Marathon_Airport&oldid=1370257022), revision of 20 Aug 2026 (CC BY-SA 4.0)
- [timezone-boundary-builder](https://github.com/evansiroky/timezone-boundary-builder): Time zone boundaries © OpenStreetMap contributors, timezone-boundary-builder (ODbL 1.0)
- Every figure with its source: https://dromopedia.com/airports/kmth/data