Marshfield Municipal (KMFI), Wisconsin
Landing essentials
Whether you can land, whether you can refuel, and how customs works here.
Overview
Marshfield Municipal Airport (KMFI) sits in central Wisconsin, roughly 113 nautical miles from the nearest metro area, and serves as a business aviation field with two paved runways, the longer stretching 5,003 feet. The airport is uncontrolled and operates on a staffed attendance schedule Monday through Saturday, with fuel available on a self-serve credit card basis outside those hours. Traffic at the field, tracked by FAA TFMSC, ran to 733 business aviation operations in 2025 out of 830 total.
Runways
Marshfield Municipal has two paved runways. The longest, 16/34, is 5,003 ft long and 100 ft wide, with an asphalt surface.
Runways are listed longest first.
Source: FAA Form 5010.
Fuel and airfield services
Marshfield Municipal has Jet A+ and 100LL available on the field. Fueling is available from 8am to 5pm, daily, and the airport has no control tower.
Source: FAA Form 5010 / NASR.
Customs
Marshfield Municipal does not clear customs. The nearest port of entry is Appleton International (KATW), 75 NM away.
Source: CBP list of ports of entry.
Business aviation traffic
Marshfield Municipal recorded 733 business aviation movements in 2025. Traffic peaks in June. Business aviation traffic at KMFI is concentrated in the spring through fall months, with June, April, and October showing the highest activity of the year.
Business jet movements, FAA TFMSC count. Peak month June, 89 movements in 2025.
Source: FAA TFMSC, business jet movements, 2025.
Climate
Marshfield Municipal averages 1.9 days above 90°F in July and 30.5 freeze days in January. July is the warmest month, with average highs of 79.6°F, and January the coldest, at 22.7°F.
Weather station is on the field. Some values are estimated by the agency. 1991–2020 climate normals.
Source: NOAA NCEI.
Operating constraints
Marshfield Municipal has published operating constraints in three categories: runway notes, environmental and other notes.
Medium intensity runway lighting for Runway 05/23 and Runway 16/34 is preset to low intensity from sunset to sunrise; pilots can increase intensity and activate the MALSR on Runway 34, REIL on Runway 16, VASI on Runway 16 and Runway 34, and PAPI on Runway 05, along with the MIRL on Runway 05/23 and Runway 16/34, via CTAF.
Aircraft departing on Runway 34 should climb to 2,000 feet MSL before initiating a right turn.
Birds, waterfowl, and deer are present on and in the vicinity of the airport.
Fuel is available 24 hours a day using a credit card.
For clearance delivery, if unable to contact on the FSS frequency, contact Minneapolis ARTCC.
Source: FAA Chart Supplement.
Nearby airfields
Marshfield Municipal has five airfields within 30 NM. The closest is Alexander Field South Wood County (KISW), 22.38 NM southeast.
Source: Skystar calculation from official coordinates.
Skystar at KMFI
We arrange catering, fuel and trip support here. Supplier prices reach you unchanged; our coordination fee sits on its own line.
The same order, priced two ways.
$2,400.00 catering order at KMFI.
Unchanged.
What the kitchen invoices us is what your quote reads.
One line, fixed.
It does not move with the size of the order.
At cost.
Passed on at the exact amount the processor took.
Market practice figures are industry averages, not a specific competitor.
Frequently asked questions
What runways are available at Marshfield Municipal Airport (KMFI)?
Marshfield Municipal Airport, KMFI, has two paved asphalt runways. Runway 16/34 is the longer of the two at 5,003 feet, with a width of 100 feet. Runway 05/23 measures 3,600 feet long and is also 100 feet wide. Both runways support the airport's business aviation traffic, which reached 733 operations in 2025 according to FAA TFMSC data. Neither runway is described in the data as having weight restrictions.
Is fuel available at KMFI outside normal attendance hours?
Fuel is available around the clock at Marshfield Municipal Airport through a credit card system, according to airport remarks. This applies to both fuel types carried on the field, 100LL and Jet A, listed as A+ in the airport data. The airport's staffed attendance schedule runs Monday through Saturday from 0800 to 1700 local time, but the self-serve fuel access is not tied to those hours. Dispatchers planning after-hours stops at KMFI should still confirm current card-reader status before arrival, since remarks describe the credit card system without further detail.
How does traffic at Marshfield Municipal Airport vary through the year?
Business aviation traffic at Marshfield Municipal Airport, KMFI, is concentrated in specific months rather than spread evenly across the year. FAA TFMSC data for 2025 shows June as the highest month with 89 operations, followed by April with 83 and October with 79. Lower-volume months include December at 30, February at 45, and March at 46. Annual business aviation operations totaled 733 out of 830 total operations recorded at the field. This pattern reflects a seasonal skew rather than steady year-round demand.
What lighting is available for night operations at KMFI?
Marshfield Municipal Airport, KMFI, has medium intensity runway lighting on both Runway 05/23 and Runway 16/34, preset to low intensity from sunset to sunrise. Pilots can increase intensity and activate additional systems using the CTAF, since the field is not towered. Runway 34 has an MALSR approach lighting system, and Runway 16 has REIL. VASI guidance is available on Runway 16 and Runway 34, while Runway 05 has PAPI. All runway lighting activation is controlled by the pilot through CTAF rather than a tower.
Where is the nearest customs facility to Marshfield Municipal Airport?
Marshfield Municipal Airport, KMFI, does not have onsite customs processing. The nearest customs airport of entry is KATW, located approximately 75.11 nautical miles away. Aircraft arriving from international origins into KMFI need to plan a customs stop at KATW or another designated facility before or after landing at Marshfield. This distance is a meaningful planning factor for any international itinerary routing through KMFI, given the lack of onsite clearance capability at the field itself.