KHYI
San Marcos Regional Airport
San Marcos, TexasElevation 597 ftMedium airport
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Runway detail & declared distances
17/35
RWY 17178°T
VGSIPAPI (P2L)
Traffic patternLeft
RWY 35358°T
Traffic patternLeft
13/31
RWY 13133°T
ILSILS
Approach lightsMALS
VGSIPAPI (P2L)
Traffic patternLeft
RWY 31313°T
VGSIPAPI (P2L)
Traffic patternLeft
08/26
RWY 0888°T
Traffic patternLeft
RWY 26268°T
Traffic patternLeft
Runway data from the FAA NASR dataset (effective 2026-06-11). Verify with the current Chart Supplement and NOTAMs.
AIRPORT INFORMATION
Facility & services
San Marcos Regional Airport is in San Marcos, Texas. Field elevation 597 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.
OPERATIONS & CONTACT
OwnershipPublicly owned
UseOpen to the public
TypeMedium airport
ManagerCASSIDY BERENATO
Manager phone512-216-6039
AttendedDaily, 0700–2100
CHARTS & AIRSPACE
ICAO / IATAKHYI
SectionalSAN ANTONIO
Center (ARTCC)HOUSTON
Flight service (AFSS)SAN ANGELO
RegionTexas
CountryUnited States
Coordinates29.8927, -97.8630
Distance from city31 NM S
SERVICES & LIGHTING
FuelJet A+
Control towerTowered
Field lightingSee remarks
BeaconSunset to sunrise · White-green (lighted land airport)
CTAF126.825
FREQUENCIES
Communications
119
AUSTIN APP/DEP
A/D
120.825
AWOS 3
AWOS
121.35
CLNC DEL
CLD
123.05
CTAF/UNICOM
UNIC
126.825
CTAF
CTAF
Not all tower/ground/approach frequencies are in our datasets. Verify with the FAA Chart Supplement.
AIRPORT REMARKS
Operational remarks
›6 FT FENCE 130-199 FT DSTC, 360 FT L.
›100LL SELF SVC; 100 LL & JET A+ AVBL FULL SERVE.
›MALS RWY 13; MIRL RWYS 08/26, 13/31 & 17/35 PRESET LOW INTST; TO ACTVT AND INCR INTST - CTAF.
›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.
›FOR AFT HRS SVC 800-229-2379. CALL-IN FEE.
FREQUENTLY ASKED
Does KHYI have a METAR?
Yes. KHYI is a METAR-reporting station; the current observation loads live on this page.
Does KHYI have a TAF?
When KHYI issues a TAF, its decoded forecast timeline loads live on this page; otherwise use the nearest TAF-issuing field as a planning reference.
What is the field elevation at KHYI?
KHYI sits at 597 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for KHYI?
No. wxdecoder.com is for education and situational awareness only. It is not an official weather briefing or a substitute for official sources, NOTAM review, and pilot judgment.
This app is for aviation weather education, training, and situational awareness only. It is not a substitute for an official weather briefing, approved flight-planning software, flight service, dispatch procedures, current FAA regulations, or pilot judgment. Always verify weather with official sources before flight.