Benchmark Airport (3U7), Montana
Landing essentials
Whether you can land, whether you can refuel, and how customs works here.
Overview
Benchmark Airport (3U7) is an unattended public-use field near Augusta, Montana, sitting at 5,434 feet elevation. Traffic here is minimal, with FAA TFMSC data showing very limited annual operations, and the field sits well outside major metro traffic flows.
Runways
Benchmark Airport has one paved runway, 12/30, 6,000 ft long and 100 ft wide, with an asphalt surface.
Source: FAA Form 5010.
Fuel and airfield services
The airport has no control tower.
Source: FAA Form 5010 / NASR.
Customs
Benchmark Airport does not clear customs. The nearest port of entry is Great Falls International (KGTF), 61 NM away.
Source: CBP list of ports of entry.
Business aviation traffic
Benchmark Airport recorded 0 business aviation movements in 2025. Traffic at Benchmark Airport (3U7) is concentrated in March, based on the available FAA TFMSC data.
Business jet movements, FAA TFMSC count. Peak month March, 0 movements in 2025.
Source: FAA TFMSC, business jet movements, 2025.
Climate
Weather station is 3.2 NM from the field. Some values are estimated by the agency. 1991–2020 climate normals.
Source: NOAA NCEI.
Operating constraints
Benchmark Airport has published operating constraints in two categories: runway notes and other notes.
Runway rises uphill 120 feet, with rising terrain beyond the runway end.
A 33:1 slope to the threshold; trees 65 feet tall, located 0 to 150 feet right of centerline, 2,150 feet from the runway end.
Large cracks and weeds along the full length of the runway.
Snow removal is not available.
Possible moderate to severe crosswind and turbulence.
Recommended departure conditions: prior mission tasking guidance.
Mountains run parallel to the east and west, within the transitional surface.
No telephone service on site; a cabin is located one mile northwest.
For clearance delivery, contact Salt Lake ARTCC.
Source: FAA Chart Supplement.
Skystar at 3U7
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 3U7.
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 Benchmark Airport (3U7)?
No fuel type is listed in current data for Benchmark Airport (3U7). Dispatchers should plan fuel uplift at another field and confirm arrangements before departure, since the airport is unattended and has no phone service on site.
Where is the nearest customs clearance point to 3U7?
The nearest customs airport to Benchmark Airport (3U7) is KGTF, about 61 nautical miles away. There is no customs service on site at 3U7, so aircraft requiring clearance must route through KGTF or another designated port of entry.
What should a pilot know about Runway 12/30 at 3U7?
Runway 12/30 at Benchmark Airport (3U7) is a 6,000-foot paved asphalt strip, but surface condition remarks note large cracks and weeds along its full length. The runway also rises uphill and sits among terrain on both the east and west sides, so crosswind and turbulence potential should be part of any approach planning.