Oelwein Municipal (KOLZ), Iowa
Landing essentials
Whether you can land, whether you can refuel, and how customs works here.
Overview
Oelwein Municipal (KOLZ) is an unattended public-use airport in northeast Iowa, offering a paved 4,000-foot runway alongside a turf secondary strip for general aviation and business traffic passing through the region. With no on-site customs, aircraft requiring clearance route through Rochester International, roughly 77 nautical miles away. The field sits within Des Moines Approach airspace, with Minneapolis Center as backup for clearance delivery when that facility is closed.
Runways
Oelwein Municipal has two paved and unpaved runways. The longest, 13/31, is 4,000 ft long and 75 ft wide, with a concrete surface.
Runway geometry from published threshold coordinates. Not for navigation.
Runways are listed longest first.
Source: FAA Form 5010.
Fuel and airfield services
Oelwein Municipal has Jet A and 100LL available on the field. The airport has no control tower.
Source: FAA Form 5010 / NASR.
Customs
Oelwein Municipal does not clear customs. The nearest port of entry is Rochester International (KRST), 77 NM away.
Source: CBP list of ports of entry.
Business aviation traffic
Oelwein Municipal recorded 93 business aviation movements in 2025. Traffic peaks in July and September. Business aviation traffic at KOLZ peaks in July and September, each recording 16 operations, well above the quieter winter months.
Business jet movements, FAA TFMSC count. Peak month July, 16 movements in 2025.
Source: FAA TFMSC, business jet movements, 2025.
Climate
Oelwein Municipal averages 2.4 days above 90°F in July and 30.9 freeze days in January. July is the warmest month, with average highs of 81.6°F, and January the coldest, at 25.6°F.
Weather station is 3.4 NM from the field. Some values are estimated by the agency. 1991–2020 climate normals.
Source: NOAA NCEI.
Operating constraints
Oelwein Municipal has published operating constraints in three categories: access, runway notes and other notes.
For clearance delivery, contact Des Moines Approach; when Des Moines Approach is closed, contact Minneapolis Center instead.
Runway 18/36 is closed after the first snowfall.
The medium intensity runway lights and REIL for runway 13/31 are activated on CTAF.
The runway 36 thresholds and edges are marked with yellow cones.
Agricultural operations occur during the summer months.
Source: FAA Chart Supplement.
Nearby airfields
Oelwein Municipal has five airfields within 37 NM. The closest is James H Connell Field at Independence Municipal (KIIB), 13.50 NM south.
Source: Skystar calculation from official coordinates.
Skystar at KOLZ
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.
$1,200.00 catering order at KOLZ.
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 KOLZ?
Oelwein Municipal (KOLZ) has two runways: 13/31, a 4,000-foot by 75-foot concrete strip, and 18/36, a 1,822-foot by 85-foot turf runway. The concrete runway serves as the primary surface for business aviation traffic. The turf runway is not usable year-round, since it closes after the first snowfall each season.
Is KOLZ a towered airport?
Oelwein Municipal (KOLZ) is a non-towered, unattended field. Pilots use the common traffic advisory frequency to activate the medium intensity runway lights and REIL system on runway 13/31. There is no on-site staff presence, so all coordination for lighting and traffic advisories happens over CTAF rather than through a tower.
How does KOLZ handle customs clearance for international arrivals?
Oelwein Municipal (KOLZ) has no on-site customs service. Aircraft needing to clear customs must route to Rochester International (KRST), located approximately 77 nautical miles away. Pilots should plan their arrival sequencing accordingly, since KOLZ itself cannot process international clearance.
What fuel is available at KOLZ?
Oelwein Municipal (KOLZ) offers both 100LL avgas and Jet A fuel. The field operates unattended, so pilots should plan fueling logistics with that in mind rather than expecting attended service. This dual fuel availability supports both piston and turbine business aviation traffic using the airport's paved runway.