Airport information
- FAA LID
- 21MT
- Coordinates
- 45.7478, -111.0727
- Elevation
- 4,582 ft MSL
- Sectional chart
- GREAT FALLS
- Airport use
- Private
- Control tower
- No
- ARTCC
- SALT LAKE CITY (ZLC)
- Flight service (FSS)
- GREAT FALLS
- Attendance
- UNATNDD
- Segmented circle
- No
- Activated
- 2015/09
- Distance from city
- 5 SE
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 | 04:56 AM | 10:56Z |
| Sunrise | 05:34 AM | 11:34Z |
| Sunset | 09:18 PM | 03:18Z |
| Evening civil twilight Loggable night begins | 09:56 PM | 03:56Z |
Plan a flight from 21MT
Traffic pattern
- Landing
- Rwy 18
- Pattern
- left (turns left)
- TPA
- 5,600 ft MSL (≈1,000 AGL)
Enter the left downwind for Rwy 18 at 5,600 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).
Runway 18/36
1,900 ft × 50 ft · Turf- Heading
- n/a
- Traffic pattern
- Left
- Heading
- n/a
- Traffic pattern
- Left
Runway 9/27
2,050 ft × 50 ft · Turf- Heading
- n/a
- Heading
- n/a
Headings shown are true (magnetic variation unavailable).
| Runway | Length | Your margin |
|---|---|---|
| 18/36 | 1,900 ft | |
| 9/27 | 2,050 ft |
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| BZN · Bozeman | VOR-DME | 112.40 | r104° / 4.1 NM |
| LVM · Livingston | VORTAC | 116.10 | r261° / 26.6 NM |
VFR sectional
No published instrument procedures or Chart Supplement for 21MT. VFR sectional link above.
Ownership & management
Remarks FAA
- FOR CD CTC BIG SKY APCH AT 208-364-5860/5861, IF UNABLE CTC SALT LAKE ARTCC AT 801-320-2568.
- CELL 406-579-5452
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 21MT 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 21MT
Harris Runway Airport (21MT) is an airport in Bozeman, MT, at 4,582 ft MSL. It has 2 runways, the longest 2,050 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 21MT, refreshed from the Aviation Weather Center and FAA NASR.
Does 21MT have a control tower?
No. Harris Runway Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM on the Comms & NavAids tab.
What is the longest runway at 21MT?
Harris Runway Airport has 2 runways; the longest is 2,050 ft. See the Runways tab for headings, surface, and lighting.
Where is 21MT?
Harris Runway Airport is in Bozeman, MT, at an elevation of 4,582 ft MSL. Coordinates: 45.7478, -111.0727.
Fly out of 21MT often?
Save 21MT 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.