Sioux Gateway / Brig General Bud Day Field (KSUX), Iowa
Landing essentials
Whether you can land, whether you can refuel, and how customs works here.
Overview
Sioux Gateway / Brig General Bud Day Field (KSUX) is a towered joint-use airport serving Sioux City, Iowa, shared by civilian traffic and an Air National Guard unit. The field offers a 9,002-foot concrete runway and a 6,401-foot asphalt crosswind runway, giving it the pavement length to handle a wide range of business jet types. Fuel service includes both 100LL and Jet A, with attended hours matching the field's daily schedule.
Runways
Sioux Gateway / Brig General Bud Day Field has two paved runways. The longest, 13/31, is 9,002 ft long and 150 ft wide, with a concrete surface.
Runways are listed longest first.
Source: FAA Form 5010.
Fuel and airfield services
Sioux Gateway / Brig General Bud Day Field has Jet A and 100LL available on the field. Fueling is available from 4am to 12am, daily, and the airport has an operating control tower.
Source: FAA Form 5010 / NASR.
Customs
Sioux Gateway / Brig General Bud Day Field does not clear customs. The nearest port of entry is Eppley Airfield (KOMA), 69 NM away.
Source: CBP list of ports of entry.
Business aviation traffic
Sioux Gateway / Brig General Bud Day Field recorded 3,566 business aviation movements in 2025. Traffic peaks in June, August and September. Business aviation traffic at KSUX is concentrated in the June through September window, with June showing the highest monthly total of the year.
Business jet movements, FAA TFMSC count. Peak month June, 347 movements in 2025.
Source: FAA TFMSC, business jet movements, 2025.
Climate
Sioux Gateway / Brig General Bud Day Field averages 8.4 days above 90°F in July, 30.5 freeze days in January and 2.6 snow days in February. July is the warmest month, with average highs of 85.0°F, and January the coldest, at 29.5°F.
Weather station is on the field. Some values are estimated by the agency. 1991–2020 climate normals.
Source: NOAA NCEI.
Operating constraints
Sioux Gateway / Brig General Bud Day Field has published operating constraints in six categories: access, runway notes, emergency arresting systems, environmental, pavement strength and other notes.
After hours, fuel and support services are available only by prior permission or by calling in advance.
Prior permission is required for use of the Air National Guard ramp. Contact base operations to arrange.
Air National Guard remarks: official business only, prior permission required. The command post operates 24 hours; base operations runs from 1230 to 2230Z, Tuesday through Friday, excluding holidays. Parking is extremely limited, and passenger identification and baggage screening for transient aircraft are unavailable.
Lighting operates dusk to dawn. When the control tower is closed, activate MALS on Runway 13, MALSR on Runway 31, REIL on Runway 18, VASI on Runways 13 and 31, HIRL on Runway 13/31, and MIRL on Runway 18/36, using CTAF.
Personnel and equipment working near the runway may be present from 2130 to 0600 during inclement weather, November through April.
Runway 31 is designated as the calm wind runway.
BAK-14 and BAK-12B(B) arresting gear is located 1,392 feet from the threshold.
BAK-14 and BAK-12B(B) arresting gear is located 1,492 feet from the threshold.
At the approach end of Runway 31, BAK-12(B)/14 arresting gear is located 1,492 feet from the threshold.
At the approach end of Runway 13, BAK-12/14(B) arresting gear is located 1,500 feet from the threshold.
BAK-12/14 arresting gear is located 1,392 feet from the threshold (E60-13).
Caution: occasional bird watch conditions occur, especially severe during spring and fall due to migratory waterfowl. The civilian tower does not broadcast USAF bird watch condition status. Contact airfield management for current bird conditions.
PCR VALUE: 540/R/C/W/T
PCR VALUE: 430/F/D/X/T
Fluid services available: LPOX and LHNIT.
JASU services available: six A/M32A-86 units and six A/M32-95 units.
Airfield surface conditions are not monitored by airport management between 0000 and 0400 local time daily.
Restricted: all military operations run from 1300 to 2200Z, Tuesday through Friday, excluding holidays.
Oil service JOAP is available only during Air National Guard duty hours.
Caution: portions of Taxiway A southeast of Taxiway B are not visible from the tower.
The control tower has limited visibility of Taxiway A near the ARFF building and of Taxiway G.
For clearance delivery, if unable to contact on the flight service station frequency, contact Minneapolis Air Route Traffic Control Center.
Source: FAA Chart Supplement.
Nearby airfields
Sioux Gateway / Brig General Bud Day Field has five airfields within 37 NM. The closest is Le Mars Municipal (KLRJ), 24.17 NM north.
Source: Skystar calculation from official coordinates.
Skystar at KSUX
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 KSUX.
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
How long is the main runway at KSUX?
The primary runway at Sioux Gateway / Brig General Bud Day Field is Runway 13/31, a concrete surface measuring 9,002 feet long and 150 feet wide. A secondary asphalt runway, 18/36, adds 6,401 feet of length at 100 feet wide. Together these two runways give KSUX enough pavement to accommodate large business jets and military traffic without length restrictions. Runway 31 is designated as the calm wind runway. The field's maximum paved runway length of 9,002 feet reflects its joint-use military and civilian role.
Is customs available on-site at Sioux Gateway (KSUX)?
Sioux Gateway / Brig General Bud Day Field does not have customs service on-site. The nearest customs clearance point is Eppley Airfield (KOMA), located approximately 69.48 nautical miles away. Flight crews requiring customs processing should plan a stop there before or after operations at KSUX. This distance should factor into routing and timing decisions for any international arrivals. No customs infrastructure is listed for KSUX itself in current airport data.
What are the fuel hours at KSUX?
Sioux Gateway / Brig General Bud Day Field maintains an attendance schedule covering all days of the week from 0400 to 0000 local time. Both 100LL and Jet A fuel are available during these hours. Outside the standard attended period, fuel and other support services require prior permission or a direct call-in arrangement, according to airport remarks. Crews planning after-hours arrivals should coordinate fuel access in advance rather than assuming walk-up availability. This after-hours condition applies specifically to fuel and general support, not to airfield operations overall.
Are there arresting gear systems at KSUX?
Yes, Sioux Gateway / Brig General Bud Day Field has arresting gear installed, consistent with its shared military and civilian use. BAK-14 and BAK-12B(B) systems are located near the approach ends of both runway thresholds, with positions noted at 1392 feet, 1492 feet, and 1500 feet from the respective thresholds. These systems support military aircraft operations at the field. Civilian crews should be aware of this equipment near the runway ends when planning approaches and landings. The presence of arresting gear reflects the field's designation as a joint-use installation with an Air National Guard presence.
What operational cautions apply to taxiway visibility at KSUX?
Sioux Gateway / Brig General Bud Day Field has documented visibility limitations from the air traffic control tower. Portions of Taxiway A southeast of Taxiway B are not visible to the tower controllers. The tower also has limited visibility of Taxiway A near the ARFF building and of Taxiway G. Crews operating in these areas should expect reduced tower awareness of their position and maintain heightened situational awareness. These visibility gaps are a standing operational note for ground movement at KSUX.