Airport information
- FAA LID
- U46
- Coordinates
- 43.4325, -113.0556
- Elevation
- 5,073 ft MSL
- Magnetic variation
- 16E
- Sectional chart
- SALT LAKE CITY
- Airport use
- Public
- Control tower
- No
- ARTCC
- SALT LAKE CITY (ZLC)
- Flight service (FSS)
- BOISE
- NOTAM facility
- BOI
- Attendance
- UNATNDD
- Segmented circle
- Yes
- Wind indicator
- yes
- Activated
- 1951/06
- Distance from city
- 10 W
Weather
METAR observed
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TAF forecast
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Sun & FAA night 2026-06-21
| Event | Local (MDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 05:16 AM | 11:16Z |
| Sunrise | 05:51 AM | 11:51Z |
| Sunset | 09:16 PM | 03:16Z |
| Evening civil twilight Loggable night begins | 09:52 PM | 03:52Z |
Plan a flight from U46
Night operations
- Pilot-controlled lighting
- Usually keyed on CTAF 122.9 — confirm the click sequence in the Chart Supplement ↗
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are in the live weather panel above.
Traffic pattern
- Landing
- Rwy 01
- Pattern
- left (turns left)
- TPA
- 6,100 ft MSL (≈1,000 AGL)
- CTAF
- 122.9
Enter the left downwind for Rwy 01 at 6,100 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).
Runway 01/19
2,600 ft × 110 ft · Dirt (Fair)- Heading
- n/a
- Traffic pattern
- Left
- Heading
- n/a
- Traffic pattern
- Left
- Approach obstacle
- Road, 14 ft, 0 ft from threshold, 100 ft L of centerline
| Runway | Length | Your margin |
|---|---|---|
| 01/19 | 2,600 ft |
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| PIH · Pocatello | VORTAC | 112.60 | r315° / 38.1 NM |
Chart Supplement FAA A/FD
Open PDF ↗Preview Chart Supplement
VFR sectional
Services
- Bottled oxygen
- NONE
- Bulk oxygen
- NONE
- Airframe service
- NONE
- Powerplant service
- NONE
- Parking
- tiedowns
Ownership & management
Remarks FAA
- EXISTED PRIOR TO 15 MAY 1959.
- NO WINTER MAINTENANCE.
- LIVESTOCK ON & INVOF ARPT.
- RWY 01/19 SFC COND POOR DUE TO LIVESTOCK DMG, GND VEHICLES, RODENTS, & VEGETATION.
- RY 01/19 +1.5 FT BERM & -1 FT DITCH ADJACENT TO ENTIRE PERIMETER OF RY.
- FOR CD CTC SALT LAKE ARTCC AT 801-320-2568.
- APRT LCTD IN DESOLATE AREA - NO SVCS AVBL.
- 01/19 EDGES & THLDS MKD WITH WHITE ROCK BOUNDARY MKRS (BMS).
- 14 FT RD 150 FT ON EXTDD CNTRLN.
Nearby airports
Weather is live from the Aviation Weather Center; airport facility data is from the FAA NASR (28-day cycle). For planning and education only; always verify against official sources. Open U46 in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator. Planning from here? Find the nearest airport with fuel or an approach, or check whether an IFR alternate is required.
About U46
Big Southern Butte Airport (U46) is an airport in Blackfoot, ID, at 5,073 ft MSL. It has 1 runway, the longest 2,600 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for U46, refreshed from the Aviation Weather Center and FAA NASR.
Does U46 have a control tower?
No. Big Southern Butte Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM on the Comms & NavAids tab.
What is the longest runway at U46?
Big Southern Butte Airport has 1 runway; the longest is 2,600 ft. See the Runways tab for headings, surface, and lighting.
Where is U46?
Big Southern Butte Airport is in Blackfoot, ID, at an elevation of 5,073 ft MSL. Coordinates: 43.4325, -113.0556.
Fly out of U46 often?
Save U46 as your home base in the SkyReady app for a one-tap Go/No-Go readiness brief, weather alerts, and automatic FAA currency — free to log.