Big Horn County Airport (00U), Montana
Landing essentials
Whether you can land, whether you can refuel, and how customs works here.
Overview
Big Horn County Airport (00U) is an unattended public-use field in Hardin, Montana, serving low-volume business aviation traffic. The airport has a single paved runway and no on-field customs service, with the nearest customs facility at Bozeman (KBZN), about 146 nautical miles away.
Runways
Big Horn County Airport has one paved runway, 08/26, 4,491 ft long and 75 ft wide, with an asphalt surface.
Source: FAA Form 5010.
Fuel and airfield services
Big Horn County Airport has 100LL available on the field. The airport has no control tower.
Source: FAA Form 5010 / NASR.
Customs
Big Horn County Airport does not clear customs. The nearest port of entry is Bozeman Yellowstone International (KBZN), 146 NM away.
Source: CBP list of ports of entry.
Business aviation traffic
Big Horn County Airport recorded 92 business aviation movements in 2025. Traffic peaks in December. Business aviation traffic at 00U is concentrated in January, April, May, November, and December, with fewer operations in the intervening months, according to FAA TFMSC data.
Business jet movements, FAA TFMSC count. Peak month December, 13 movements in 2025.
Source: FAA TFMSC, business jet movements, 2025.
Climate
Big Horn County Airport averages 20.1 days above 90°F in July, 29.8 freeze days in December and 2.3 snow days in January. July is the warmest month, with average highs of 90.7°F, and January the coldest, at 36.4°F.
Weather station is 2.3 NM from the field. Some values are estimated by the agency. 1991–2020 climate normals.
Source: NOAA NCEI.
Operating constraints
Big Horn County Airport has published operating constraints in two categories: access and runway notes.
For clearance delivery, contact Billings Approach.
PAPI for Runway 8 and Runway 26, and MIRL for Runway 8/26, are pilot-activated on CTAF.
Source: FAA Chart Supplement.
Nearby airfields
Big Horn County Airport has four airfields within 47 NM. The closest is Billings Logan International (KBIL), 37.18 NM west.
Source: Skystar calculation from official coordinates.
Skystar at 00U
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.
$600.00 catering order at 00U.
Unchanged.
What the kitchen invoices us is what your quote reads.
One line, fixed.
The $75 minimum applies below $862.50.
At cost.
Passed on at the exact amount the processor took.
Market practice figures are industry averages, not a specific competitor.
Frequently asked questions
Is fuel available at 00U?
Big Horn County Airport stocks 100LL only; no Jet A is available on the field. The airport is unattended, so pilots should plan fuel needs accordingly before arrival.
Does Big Horn County Airport have customs service?
Big Horn County Airport has no customs facility on site. The nearest customs airport of entry is Bozeman (KBZN), located approximately 146 nautical miles away.
What is the runway configuration at 00U?
Big Horn County Airport has a single paved runway, 08/26, measuring 4,491 feet long and 75 feet wide with an asphalt surface. The airport is unattended and not equipped with a control tower.