Great Falls International (KGTF), Montana
Landing essentials
Whether you can land, whether you can refuel, and how customs works here.
Overview
Great Falls International (KGTF) is a towered, public-use airport in Great Falls, Montana, sitting at 3,680 feet elevation and serving as a tier-1 facility with a substantial share of business aviation activity among its overall 2025 traffic. The field offers two paved asphalt runways, onsite customs and agricultural inspection services, and shares its ramp with Montana Air National Guard operations that carry their own distinct access rules.
Runways
Great Falls International has two paved runways. The longest, 03/21, is 10,502 ft long and 150 ft wide, with an asphalt surface.
Runway geometry from published threshold coordinates. Not for navigation.
Runways are listed longest first.
Source: FAA Form 5010.
Fuel and airfield services
Great Falls International has Jet A and 100LL available on the field. Fueling is available 24 hours a day, every day, and the airport has an operating control tower.
Source: FAA Form 5010 / NASR.
Customs
Great Falls International has US Customs and Border Protection clearance available onsite, with general clearance for international arrivals. A USDA compliance agreement is in place.
Source: CBP list of ports of entry.
Business aviation traffic
Great Falls International recorded 6,085 business aviation movements in 2025. Traffic peaks in July and August. Business aviation traffic at Great Falls Intl is concentrated in the summer months, peaking in July and August according to FAA TFMSC data.
Business jet movements, FAA TFMSC count. Peak month August, 650 movements in 2025.
Source: FAA TFMSC, business jet movements, 2025.
Climate
Great Falls International averages 10.0 days above 90°F in July, 27.0 freeze days in December and 3.6 snow days in February. July is the warmest month, with average highs of 84.3°F, and January the coldest, at 35.3°F.
Weather station is on the field. Some values are estimated by the agency. 1991–2020 climate normals.
Source: NOAA NCEI.
Operating constraints
Great Falls International has published operating constraints in six categories: access, weight restrictions, runway notes, environmental, pavement strength and other notes.
Military: Air National Guard limited transient service is available only for aircraft participating in ANG operations, with prior coordination (PPR) required.
Taxiway C has no weight restriction and is available for taxiing aircraft.
REIL for Runway 21 operates continuously whenever runway lights are on. Runway lights are controlled by the tower.
The PAPI is unusable beyond 9 degrees right of the runway centerline.
Military: Air National Guard operations run 1400-2330Z++ Monday through Thursday, with limited hours Friday, and closure Saturday, Sunday, and holidays. Contact base operations for details. No transient service is available Saturday, Sunday, holidays, or after 2300Z++ Monday through Friday. Aircraft requiring assistance should contact the published frequency, 288.9. Runway condition report information is available from base operations.
Birds are present on and in the vicinity of the airport.
PCR VALUE: 5290/F/B/X/T
PCR VALUE: 300/F/B/X/U
Military: Air National Guard reports increased migratory waterfowl activity expected (Phase II) under the USAF BASH program during March through May and September through December, from half an hour before sunrise to half an hour after sunset.
Military: Air National Guard has a nonstandard white equipment tool box location painted on the ramp.
Military: Air National Guard reports A++ fuel available at the ANG facility.
Source: FAA Chart Supplement.
Nearby airfields
Great Falls International has four airfields within 48 NM. The closest is Bar E, 35.90 NM southwest.
Source: Skystar calculation from official coordinates.
Skystar at KGTF
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 KGTF.
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 is the primary runway length at KGTF?
Great Falls International (KGTF) operates Runway 03/21 at 10,502 feet long and 150 feet wide, with an asphalt surface. This is the longest of the two runways at the field, and it also matches the airport's published maximum paved runway length. The secondary runway, 17/35, measures 6,030 feet by 150 feet, also asphalt. Both runways support a range of business aviation aircraft. Runway 03/21 is the runway most likely to accommodate larger jet traffic given its length.
Does Great Falls International have customs available onsite?
Yes, Great Falls International (KGTF) has customs services onsite, with CBP inspection services available and a USDA compliance agreement in place. This means arriving international flights can clear both customs and agricultural inspection at the airport itself, rather than diverting to another facility. Dispatchers planning international arrivals into KGTF should still confirm current procedures and any required advance notice with the appropriate agencies before scheduling. The onsite arrangement covers both CBP and USDA requirements under a single compliance framework.
What fuel is available at KGTF?
Great Falls International (KGTF) offers both 100LL and Jet A fuel for civilian traffic. Separately, the Air National Guard operations at the field report A++ fuel available at the ANG ramp, though that supply is tied to military operations rather than general civilian service. The attendance schedule at KGTF is listed as all-day, every day. Flight planners should confirm fuel type and availability directly with field operations when scheduling a stop at Great Falls International.
Is there restricted military access at KGTF?
Great Falls International (KGTF) hosts Air National Guard operations with specific access limitations separate from the civilian side of the field. ANG operating hours run 1400-2330Z++ Monday through Thursday, with limited hours Friday and closure Saturday, Sunday, and holidays. Transient service through ANG is not available on Saturday, Sunday, holidays, or after 2300Z++ on weekdays. Limited transient service through ANG is available only for aircraft participating in ANG operations, and prior coordination (PPR) is required. Aircraft requiring assistance must contact base operations on the published frequency.
When does business aviation traffic peak at Great Falls International?
Business aviation traffic at Great Falls International (KGTF) is concentrated in the summer months, with August recording 650 operations and July recording 628, according to FAA TFMSC data for 2025. Traffic is lower in the winter months, with January at 391 and February at 406 operations. This pattern reflects a clear seasonal concentration rather than steady year-round demand. Dispatchers scheduling summer trips into KGTF should anticipate higher traffic volumes during July and August specifically.