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San Marcos Regional Airport
HYI · KHYI · San Marcos, TX · 597 ft elevation · var 7E · Towered
Airport information
- ICAO / IATA
- KHYI
- Coordinates
- 29.8927, -97.8630
- Elevation
- 597 ft MSL
- Magnetic variation
- 7E
- Sectional chart
- SAN ANTONIO
- Airport use
- Public
- Control tower
- Yes
- ARTCC
- HOUSTON (ZHU)
- Flight service (FSS)
- SAN ANGELO
- NOTAM facility
- HYI
- Attendance
- ALL 0700-2100
- Beacon
- white-green (SS-SR)
- Segmented circle
- Yes
- Wind indicator
- lighted
- Activated
- 1965/05
- Distance from city
- 31 S
Weather
METAR observed
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TAF forecast
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Sun & FAA night 2026-06-20
| Event | Local (CDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 06:03 AM | 11:03Z |
| Sunrise | 06:31 AM | 11:31Z |
| Sunset | 08:35 PM | 01:35Z |
| Evening civil twilight Loggable night begins | 09:03 PM | 02:03Z |
Loggable night (§1.1)
09:03 PM → 06:03 AM
Night currency (§61.57)
09:35 PM → 05:31 AM
Plan a flight from KHYI
Runway 08/26
6,330 ft × 100 ft · Asphalt (Good) 08
- Heading
- 081° mag · 88° true
- Markings
- nonprecision
- Traffic pattern
- Left
26
- Heading
- 261° mag · 268° true
- Markings
- nonprecision
- Traffic pattern
- Left
Runway 13/31
5,601 ft × 100 ft · Asphalt (Good) 13
- Heading
- 126° mag · 133° true
- Markings
- precision
- VGSI
- 2-light PAPI (left) (3°)
- Approach lights
- MALS
- Instrument approach
- ILS
- Traffic pattern
- Left
31
- Heading
- 306° mag · 313° true
- Markings
- precision
- VGSI
- 2-light PAPI (left) (3°)
- Traffic pattern
- Left
Runway 17/35
5,214 ft × 100 ft · Asphalt (Good) 17
- Heading
- 171° mag · 178° true
- Markings
- nonprecision
- VGSI
- 2-light PAPI (left) (3°)
- Traffic pattern
- Left
35
- Heading
- 351° mag · 358° true
- Markings
- nonprecision
- Traffic pattern
- Left
Communication frequencies
| Service | Frequency | Notes |
|---|---|---|
| A/D | 119 | AUSTIN APP/DEP |
| AWOS | 120.825 | AWOS 3 |
| CLD | 121.35 | CLNC DEL |
| UNIC | 123.05 | CTAF/UNICOM |
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| DHK · Randolph | TACAN | 109.90 | r036° / 30 NM |
| RND · Randolph | VORTAC | 112.30 | r035° / 31.4 NM |
| CWK · Centex | VORTAC | 112.80 | r205° / 33.9 NM |
| SAT · San Antonio | VORTAC | 116.80 | r056° / 34.6 NM |
Airport diagram
Open PDF ↗Preview diagram
Approaches
- ILS OR LOC RWY 13 ↗ · amdt 6D
- RNAV (GPS) RWY 08 ↗ · amdt 0C
- RNAV (GPS) RWY 13 ↗ · amdt 2C
- RNAV (GPS) RWY 17 ↗ · amdt 0C
- RNAV (GPS) RWY 26 ↗ · amdt 0B
- RNAV (GPS) RWY 31 ↗ · amdt 0B
- RNAV (GPS) RWY 35 ↗ · amdt 0B
Departures
Minimums & Hot Spots
Chart Supplement FAA A/FD
Open PDF ↗Preview Chart Supplement
VFR sectional
Services
- Fuel available
- 100LL, Jet A (additive)
- Bottled oxygen
- LOW
- Airframe service
- MAJOR
- Powerplant service
- MAJOR
- Parking
- tiedowns, hangars
- Other services
- Avionics, Charter, Instruction, Rental, Aircraft sales
Ownership & management
Owner
CITY OF SAN MARCOS
630 E. HOPKINS STREET, SAN MARCOS, TX
512-216-6039
Manager
CASSIDY BERENATO
4400 HWY 21, SUITE 200, SAN MARCOS, TX
512-216-6039
Remarks FAA
- ESTABLISHED PRIOR TO 1940.
- FOR CD CTC AUSTIN APCH AT 512-369-7865.
- APN ALL IREG SFC.
- BIRDS AND WILDLIFE ON AND INVOF ARPT.
- TSNT ACFT PRKG AVBL ON FBO RAMP ONLY. ALL OTR RAMP AREAS RESD FOR BASED ACFT OR RQR PRIOR CDN WITH ARPT MGMT.
- MALS RWY 13; MIRL RWYS 08/26, 13/31 & 17/35 PRESET LOW INTST; TO ACTVT AND INCR INTST - CTAF.
- FOR AFT HRS SVC 800-229-2379. CALL-IN FEE.
- 100LL SELF SVC; 100 LL & JET A+ AVBL FULL SERVE.
- 6 FT FENCE 130-199 FT DSTC, 360 FT L.
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 KHYI in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator.