St Alphonsus Heliport HeliportPrivate
ID91 · Boise, ID · 2,800 ft elevation · var 17E · Non-towered
Airport information
- FAA LID
- ID91
- Coordinates
- 43.6143, -116.2640
- Elevation
- 2,800 ft MSL
- Magnetic variation
- 17E
- Sectional chart
- SALT LAKE CITY
- Airport use
- Private
- Control tower
- No
- ARTCC
- SALT LAKE CITY (ZLC)
- Flight service (FSS)
- BOISE · 122.6 · 1-800-WX-BRIEF
- Attendance
- UNATNDD
- Beacon
- white-green-yellow
- Segmented circle
- No
- Wind indicator
- yes
- Activated
- 1971/11
- Distance from city
- 0 N
Weather
METAR observed
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TAF forecast
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Sun & FAA night 2026-06-23
| Event | Local (MDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 05:28 AM | 11:28Z |
| Sunrise | 06:04 AM | 12:04Z |
| Sunset | 09:30 PM | 03:30Z |
| Evening civil twilight Loggable night begins | 10:06 PM | 04:06Z |
Plan a flight from ID91
Night operations
- Airport lighting
- SS-SR
- Rotating beacon
- white-green-yellow
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are in the live weather panel above.
Runway H1/
50 ft × 50 ft · Concrete (Poor)- Heading
- n/a
- Threshold elev
- 2,800 ft
- Markings
- none
- Traffic pattern
- Left
- Heading
- 302° mag · 319° true
Runway H2/
25 ft × 25 ft · CONC- Heading
- n/a
- Heading
- 194° mag · 211° true
| Runway | Length | Your margin |
|---|---|---|
| H1/ | 50 ft | |
| H2/ | 25 ft |
Communication frequencies
Tower & ground
| UNICOM | 123.075 |
Source: FAA NASR (current 28-day cycle).
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| BOI · Boise | VORTAC | 113.30 | r303° / 4.8 NM |
| MUO · Mountain Home | TACAN | 114.00 | r316° / 38.4 NM |
VFR sectional
No published instrument procedures or Chart Supplement for ID91. VFR sectional link above.
Services
- Airframe service
- NONE
- Powerplant service
- NONE
Ownership & management
Remarks FAA
General
- FOR CD CTC BIG SKY APCH AT 208-364-5860/5861.
Runways
- ROOFTOP
Obstructions
- 15 FT LGTD ANT 50 FT FM HELIPAD.
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 ID91 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 ID91
St Alphonsus Heliport (ID91) is a heliport in Boise, ID, at 2,800 ft MSL. It has 2 runways, the longest 50 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for ID91, refreshed from the Aviation Weather Center and FAA NASR.
Does ID91 have a control tower?
No. St Alphonsus Heliport is a non-towered (pilot-controlled) heliport; use the published CTAF/UNICOM on the Comms & NavAids tab.
What is the longest runway at ID91?
St Alphonsus Heliport has 2 runways; the longest is 50 ft. See the Runways tab for headings, surface, and lighting.
Where is ID91?
St Alphonsus Heliport is in Boise, ID, at an elevation of 2,800 ft MSL. Coordinates: 43.6143, -116.2640.
Fly out of ID91 often?
Save ID91 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.