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
At a glance
- Operating hours
- 12:00–02:00 UTC
- Fuel
- 100LL, Jet A+
- Tower
- 126.825
- Runways
- 08/26, 13/31, 17/35
- Elevation
- 597 ft
Times in UTC. Reference only: verify with the AIP and NOTAMs.
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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
· Oct 27
73 aircraft observed within 6 NM · busiest hour 18:00Z
2026-10-142026-10-27
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 Recently verified Outdated — please verify
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 Recently verified Outdated — please verify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: Not recorded
- 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: Not recorded
- PPR Required: Not recorded
- 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: Not recorded
- APIS Required: Not recorded
- GAR Required: Not recorded
- 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
10/018
info Upcoming
SVC AUTOMATED WX BCST SYSTEM NOT AVBL
2026-10-29 05:00 UTC
2026-10-29 11:00 UTC
10/017
info
COM REMOTE TRANS/REC 121.35 U/S
2026-10-21 08:06 UTC
2026-10-28 20:00 UTC
10/016
info
OBST TOWER LGT (ASR 1047369) 300523.20N0980523.80W (16.7NM NW HYI) 1665.0FT (396.0FT AGL) U/S
2026-10-19 01:56 UTC
2027-02-16 01:56 UTC
+12 more active NOTAMs
NOTAMs received from the FAA NOTAM feed (last message 2026-10-28 10:55 UTC). This list is built from the feed as NOTAMs are issued and is not checked against the FAA's full list: confirm with FAA NOTAM Search before flight.
View all NOTAMs on Map
Nearby Airports
Airport History
No milestones recorded for San Marcos Regional Airport yet. Know when it opened, who built it or a notable event? Add it with a source.
Add a historical factFrequently 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?
- It depends on the flight. No permits required for private non-revenue flights. eAPIS manifest mandatory for all international arrivals/departures. Permit details for 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.