Reference data only — not for flight planning or navigation. Verify with official sources (AIP, NOTAMs, ATC). Full disclaimer
San Marcos Regional Airport (KHYI) — San Marcos, United States
San Marcos Regional Airport (KHYI) serves San Marcos, United States. This is a mid-sized airport with 3 runways (08/26, 13/31). Field elevation is 597 ft AMSL. Data on this page is maintained by the aviation community — contribute to keep it accurate.
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81%
Data Complete
42 of 52 points
Missing: Contacts
Section Breakdown
Basic Info
7/7
Runways
4/4
Frequencies
4/4
Operations
2/2
Fuel
1/1
Contacts
0/2
Additional Info
2/10
Observed Activity
· Sep 11
63 aircraft observed within 6 NM · busiest hour 18:00Z
2026-08-292026-09-11
Distinct ADS-B aircraft seen within 6 NM below 10,000 ft AGL per UTC day · community-feed coverage varies · not official movement totals
Data last updated:
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See a next to a field? Click it to confirm the info is still correct. Recently verified Outdated — please verify
Basic Airport Information
- ICAO: KHYI
- Name: San Marcos Regional Airport
- Type: medium_airport
- Category: Domestic
- Latitude: 29.8927
- Longitude: -97.862999
- Elevation: 597 ft
- Country: United States
- Municipality: San Marcos
- IATA Code: N/A
- FAA Code: N/A
- FIR: N/A
- Timezone: America/Chicago
- Distance from City: N/A km
- VFR: Yes
- IFR: No
Runways
Runway 08/26
- Designation: 08/26
- Dimensions: 1929x30m
- Surface: ASP
- PCN: N/A
- Lighting: Lighted
- NAVAIDs: N/A
- Approach Types: N/A
- Remarks: N/A
Runway 13/31
- Designation: 13/31
- Dimensions: 1707x30m
- Surface: ASP
- PCN: N/A
- Lighting: Lighted
- NAVAIDs: N/A
- Approach Types: N/A
- Remarks: N/A
Runway 17/35
- Designation: 17/35
- Dimensions: 1589x30m
- Surface: ASP
- PCN: N/A
- Lighting: Lighted
- NAVAIDs: N/A
- Approach Types: N/A
- Remarks: N/A
Frequencies
- Tower: 126.825 MHz
- Ground: 120.125 MHz
- Operations: 126.825 MHz
- Traffic/Approach: N/A
- ATIS: 120.825 MHz
Operation Hours
Monday
12:00
–
02:00
Tuesday
12:00
–
02:00
Wednesday
12:00
–
02:00
Thursday
12:00
–
02:00
Friday
12:00
–
02:00
Saturday
12:00
–
02:00
Sunday
12:00
–
02:00
- Extra Hours On Request: No
- Remarks: N/A
Contacts
- AIS Tel: N/A
- ARO Tel: N/A
- MET Tel: N/A
- Admin Tel: +1 512-216-6039
- Health Tel: N/A
- Police Tel: N/A
- Authorities Tel: N/A
- Website: N/A
- Remarks: N/A
Slots / PPR
- Slot Required: No
- PPR Required: No
- PPR Contact: N/A
- Remarks: N/A
Fuel Information
- Fuel Type: 100LL
- Price/L: N/A
- Last Updated: N/A
- Remarks: N/A
- Fuel Type: Jet A+
- Price/L: N/A
- Last Updated: N/A
- Remarks: N/A
Immigration
- Port of Entry: No
- GENDEC Required: No
- GAR Required: No
- Remarks: N/A
Airport Services
No services listed for this airport yet.
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United States Permit Requirements
Fast
Landing: 1d
- Overflight Permit: No
- Landing Permit: Conditional
- Overflight Lead Time: N/A
- Landing Lead Time: 60 minutes minimum (eAPIS manifest before departure); recommend 24-48 hours for CBP port notification
Private / GA Operations:
No permits required for private non-revenue flights. eAPIS manifest mandatory for all international arrivals/departures.
Active NOTAMs
09/002
info
OBST TOWER LGT (ASR 1322857) 295911.90N0975229.60W (5.65NM NNW HYI) 943FT (223FT AGL) U/S
2026-09-04 04:27:00
2026-12-03 23:59:00
09/001
info
OBST TOWER LGT (ASR 1227830) 295929.10N0974509.40W (8.3NM NE HYI) 841.9FT (254.9FT AGL) U/S
2026-09-01 20:14:00
2026-11-30 21:14:00
Nearby Airports
Airport History
Discover the key milestones and historical events that shaped San Marcos Regional Airport. Our community-powered timeline traces this airport's journey from its origins to the present day.
Explore HistoryFrequently Asked Questions
- What are the operating hours of KHYI?
- San Marcos Regional Airport operates from 12:00 to 02:00.
- What is the tower frequency at KHYI?
- The tower frequency at San Marcos Regional Airport is 126.825 MHz.
- What fuel is available at KHYI?
- San Marcos Regional Airport offers 100LL, Jet A+.
- Does KHYI require landing permits?
- Yes, landing permits are required for San Marcos Regional Airport (United States).
- Where is KHYI located?
- San Marcos Regional Airport (KHYI) is located in San Marcos, United States.
- How long is the runway at KHYI?
- The main runway at San Marcos Regional Airport (08/26) measures 1929x30m.