KSAT Runway 13R/31L — San Antonio International Airport
8,502 × 150 ft concrete · true headings 132° / 312° · field elevation 809 ft
Runway 13R/31L at San Antonio International Airport (KSAT) in San Antonio, TX is 8,502 ft long and 150 ft wide, concrete, with true headings 132° and 312°. The FAA record lists ILS/DME (CAT II) and ALSF-2 approach lights on runway 13R. Over 2005–2025 the wind gave runway 13R the headwind 68.2% of the time and runway 31L 31.8%, with a crosswind above 15 kt in 0.4% of wind hours. KSAT publishes its tower configuration on FAA SWIM, so this page shows the runway the tower is actually using right now, today's configuration changes, and a growing record of how often each end is assigned.
Runway 13R/31L — current operational status
What the D-ATIS, the tower and current NOTAMs state now. The published FAA baseline (NASR) is a separate line in the overview below and does not reflect temporary closures.
- NOTAM 10/128: !SAT 10/128 SAT NAV ILS RWY 13R LOC/GP U/S 2610301744-2611052000EST
Sources: Published FAA baseline (OurAirports/NASR record) · FAA NOTAMs · D-ATIS · D-ATIS 1351Z (7:51 AM CST). Runway NOTAMs stream live from the FAA NOTAM Management Service (SWIM); the official text is shown verbatim below the card. Always confirm with a current briefing.
NOTAMs for runway 13R/31L
Official text as issued; grouped for reading only. “Scheduled” means not yet in effect. NOTAMs are received live from the FAA NOTAM Management Service through SWIM and recorded since Sep 19, 2026; a NOTAM issued before that and not re-issued since may be missing. Get a full briefing before flight.
- 10/128 · DOM10/30 1744Z (12:44 PM CDT) → 11/05 2000Z (2:00 PM CST)
!SAT 10/128 SAT NAV ILS RWY 13R LOC/GP U/S 2610301744-2611052000EST
- 6/4167 · INTL10/31 1952Z (2:52 PM CDT) → 11/04 2000Z (2:00 PM CST)
IAP SAN ANTONIO INTL, SAN ANTONIO, TX. ILS OR LOC RWY 31L, AMDT 12A... RADAR REQUIRED FOR PROCEDURE ENTRY EXCEPT FOR ACFT EQUIPPED WITH SUITABLE RNAV SYSTEM WITH GPS, SAT VOR OUT OF SERVICE.
- 6/4165 · INTL10/31 1952Z (2:52 PM CDT) → 11/04 2000Z (2:00 PM CST)
IAP SAN ANTONIO INTL, SAN ANTONIO, TX. ILS OR LOC RWY 13R, AMDT 15... ILS RWY 13R (CAT II), AMDT 15... MISSED APPROACH: CLIMB TO 3100 DIRECT POYIG AND ON TRACK 170.57 TO EMBOW AND HOLD. DME REQUIRED EXCEPT FOR ACFT EQUIPPED WITH SUITABLE RNAV SYSTEM WITH GPS, SAT VOR OUT OF SERVICE.
Feet, touchdown / midpoint / rollout; 6000+ is the reportable maximum and “off” means the sensor is not reporting (runway not in use). Light settings 0 (off) to 5. Runway lights are on. Not an FAA product; verify with the current METAR and ATIS.
Current active runways at KSAT
As stated by the tower — its TFDM surface system and its D-ATIS broadcast. Not an estimate.
Airport rates: 28 arrivals / 28 departures per hour. In effect since 2026-08-20 1642Z (11:42 AM CDT).
Flow: Southeast flow— the compass direction of the stated arrival ends
Runway 13R/31L in this configuration: 13R — ARRIVALS AND DEPARTURES
This D-ATIS configuration has been stated since 1108Z (5:08 AM CST).
Show the D-ATIS text
SAT ATIS INFO B 1351Z. 01004KT 10SM SCT046 BKN065 BKN110 20/17 A2993 (TWO NINER NINER THREE) RMK AO2 RAE42 SLP118 SHRA NE-SE P0000 T02000172. ILS RWY 31L APCH IN USE. DEPG RWY 31L, RWY 31R. NOTICE TO AIRMEN. JETS EXPECT DEPARTURE FROM RUNWAY 31 LEFT AT NOVEMBER INTERSECTION DEPARTURE. ATTENTION ALL AIRCRAFT RUNWAY ENTRANCE LIGHTS OPERATIONAL EVALUATION IN PROGRESS. RUNWAY ENTRANCE LIGHTS MAY BE OFFLINE INTERMITTENTLY THROUGOUT THE EVALUATION DO NOT CROSS ILLUMINATED RED LIGHTS AT TAXIWAY INTERSECTIONS. ...ADVS YOU HAVE INFO B.
Current wind on Runway 13R/31L
Wind from the north-northeast (020°) at 4 kt
- Tailwind
- 1 kt
- Crosswind
- 4 ktfrom left
- Headwind
- 1 kt
- Crosswind
- 4 ktfrom right
- arrivals
- departures
- LAHSO hold-short
- closed
Layout from FAA NASR runway-end coordinates; the selected runway is highlighted and the ends the tower TFDM states in use are marked at their own threshold. Not for navigation. Official FAA diagram ↗
Wind-favored runway at KSAT right now: 04 (4 kt headwind) — a different runway than this one.
Components use TRUE runway headings and TRUE METAR wind. “Favored by wind” is arithmetic, not an ATC assignment.
Today's runway configuration at KSAT
Meaningful configuration changes recorded from the tower's TFDM feed — the facility's own statements, not estimates.
Nov 3, 2026 (airport-local day): 0 configuration changes since local midnight, from the tower's TFDM configuration ATIS Alerts recorded. A change is a different arrival or departure set; a new ATIS letter with the same runways is folded into the row it belongs to. The history section below counts the same way over rolling windows.
- 06:09Z12:09 AM CST(in effect since before the day began)8.0 h · currentArrivals13R13LDepartures13R13L04Southeast flowIn effect at the start of the day
Runway 13R/31L outlook
Where runway 13R/31L stands now and which runway at KSAT is likely over the next 12 hours — an estimate, not an ATC assignment.
Time · runway 13R/31L · airport-wide outlook · confidence · forecast wind · why
- Now1409Z · 8:09 AM CST·13R/31L: 13R in use·Current airport configuration (tower TFDM): arrivals 13R · 13L · departures 13R · 13L · 04·stated·wind 020° at 4 kt
- +1 h1509Z · 9:09 AM CST·13R/31L: no runway favored·no runway favored airport-wide·no confidence·wind not forecast·Why No TAF is published for this airport, so there is no forecast wind to score.
- +2 h1609Z · 10:09 AM CST·13R/31L: no runway favored·no runway favored airport-wide·no confidence·wind not forecast·Why No TAF is published for this airport, so there is no forecast wind to score.
- +3 h1709Z · 11:09 AM CST·13R/31L: no runway favored·no runway favored airport-wide·no confidence·wind not forecast·Why No TAF is published for this airport, so there is no forecast wind to score.
- +6 h2009Z · 2:09 PM CST·13R/31L: no runway favored·no runway favored airport-wide·no confidence·wind not forecast·Why No TAF is published for this airport, so there is no forecast wind to score.
- +12 h0209Z · 8:09 PM CST·13R/31L: no runway favored·no runway favored airport-wide·no confidence·wind not forecast·Why No TAF is published for this airport, so there is no forecast wind to score.
ATIS Alerts Predicted Runway is an estimate from the current wind (no TAF is published for this airport), runway geometry (most headwind, crosswind penalised, tailwind over 5 kt avoided, longest runway breaks ties), the current stated configuration and any stated closures; recorded tower use since Aug 20, 2026 (720 h) is an input wherever a wind sector has 24 h on record. Each row lists its reasons; “no runway favored” is a genuine answer under variable or light wind, never replaced by a guess. It is not an ATC assignment and does not know about noise abatement or traffic flow unless the recorded history shows them.
Counts the tower's surface system expects per runway over the next two hours — the tower's plan, not an ATIS Alerts estimate and not an ATC assignment. A runway with zero expected demand is not in the plan for that period. During a runway change the plan can lag the configuration above for a few minutes (flights already assigned to the old runways stay counted there until reassigned).
- APREQ → KPHX (21 programs) · since 11/03 1359Z · until further notice · by ZAB — approval request — departures need a release time
- APREQ (20 programs) · since 10/31 2256Z · until further notice · by ZFW — approval request — departures need a release time
- APREQ → KSDL/KDVT (15 programs) · since 11/03 1359Z · until further notice · by ZAB — approval request — departures need a release time
- APREQ → MMAN · since 07/07 1543Z · until further notice — approval request — departures need a release time
- APREQ → KHOU · since 07/08 1222Z · until further notice — approval request — departures need a release time
- APREQ → LAX · since 09/01 1835Z · until further notice — approval request — departures need a release time
- APREQ → KDFW · since 11/03 1209Z · until further notice · by ZHU — approval request — departures need a release time
- MIT · 10 MIT · 3 MINIT · since 07/07 1345Z · until further notice — miles-in-trail spacing
Restrictions on departures from KSATtoward the named airports or fixes, as recorded by the tower's surface system; they change the departure flow, not the runway in use. Not an FAA product.
Runway 13R/31L equipment and lighting
What the FAA record lists for each end, annotated with current NOTAM and D-ATIS outages.
- Approach lighting
- ALSF-2
- Visual glide slope
- PAPI (4-box, left side)
- Runway edge lighting
- HIRL (high intensity)
- Centerline lighting
- Available
- Touchdown zone lighting
- Available
- REIL
- Not available
- ILS
- ILS/DMEDEGRADED
- Localizer
- AvailableOUT OF SERVICE
- Glideslope
- AvailableOUT OF SERVICE
- DME
- AvailableDEGRADED
- Marker beacons
- Not available
- RVR
- touchdown, midpoint, rollout
- Runway markings
- Precision instrument
- Arresting system
- Not available
IAP SAN ANTONIO INTL, SAN ANTONIO, TX. ILS OR LOC RWY 13R, AMDT 15... ILS RWY 13R (CAT II), AMDT 15... MISSED APPROACH: CLIMB TO 3100 DIRECT POYIG AND ON TRACK 170.57 TO EMBOW AND HOLD. DME REQUIRED EXCEPT FOR ACFT EQUIPPED WITH SUITABLE RNAV SYSTEM WITH GPS, SAT VOR OUT OF SERVICE.
!SAT 10/128 SAT NAV ILS RWY 13R LOC/GP U/S 2610301744-2611052000EST
IAP SAN ANTONIO INTL, SAN ANTONIO, TX. ILS OR LOC RWY 13R, AMDT 15... ILS RWY 13R (CAT II), AMDT 15... MISSED APPROACH: CLIMB TO 3100 DIRECT POYIG AND ON TRACK 170.57 TO EMBOW AND HOLD. DME REQUIRED EXCEPT FOR ACFT EQUIPPED WITH SUITABLE RNAV SYSTEM WITH GPS, SAT VOR OUT OF SERVICE.
!SAT 10/128 SAT NAV ILS RWY 13R LOC/GP U/S 2610301744-2611052000EST
!SAT 10/128 SAT NAV ILS RWY 13R LOC/GP U/S 2610301744-2611052000EST
IAP SAN ANTONIO INTL, SAN ANTONIO, TX. ILS OR LOC RWY 13R, AMDT 15... ILS RWY 13R (CAT II), AMDT 15... MISSED APPROACH: CLIMB TO 3100 DIRECT POYIG AND ON TRACK 170.57 TO EMBOW AND HOLD. DME REQUIRED EXCEPT FOR ACFT EQUIPPED WITH SUITABLE RNAV SYSTEM WITH GPS, SAT VOR OUT OF SERVICE.
- Approach lighting
- MALSR
- Visual glide slope
- PAPI (4-box, left side)
- Runway edge lighting
- HIRL (high intensity)
- Centerline lighting
- Available
- Touchdown zone lighting
- Not available
- REIL
- Not available
- ILS
- ILS/DMEDEGRADED
- Localizer
- AvailableDEGRADED
- Glideslope
- Available
- DME
- Available
- Marker beacons
- Not available
- RVR
- touchdown, midpoint, rollout
- Runway markings
- Precision instrument
- Arresting system
- Not available
IAP SAN ANTONIO INTL, SAN ANTONIO, TX. ILS OR LOC RWY 31L, AMDT 12A... RADAR REQUIRED FOR PROCEDURE ENTRY EXCEPT FOR ACFT EQUIPPED WITH SUITABLE RNAV SYSTEM WITH GPS, SAT VOR OUT OF SERVICE.
IAP SAN ANTONIO INTL, SAN ANTONIO, TX. ILS OR LOC RWY 31L, AMDT 12A... RADAR REQUIRED FOR PROCEDURE ENTRY EXCEPT FOR ACFT EQUIPPED WITH SUITABLE RNAV SYSTEM WITH GPS, SAT VOR OUT OF SERVICE.
Source: FAA NASR 28-day subscription, cycle effective 2026-10-01 (equipment on record) · FAA NOTAMs via SWIM (live)and the current D-ATIS (outages). “Not available” means the FAA record lists no such equipment for the end; nothing here is inferred. An outage annotation is only ever a reading of the official text shown with it. Declared distances are not shown in this phase.
Land and hold short operations
LAHSO hold-short points and available landing distances on the FAA record, and whether the current D-ATIS reports LAHSO in effect.
No LAHSO hold-short point on the FAA record for this end.
No LAHSO hold-short point on the FAA record for this end.
The current D-ATIS does not state LAHSO in effect. Source: FAA NASR cycle 2026-10-01; D-ATIS text read by ATIS Alerts.
Frequencies for runway 13R/31L
Tower, ground, clearance, ATIS and approach frequencies from the FAA record, labelled by what they apply to.
| Service | Frequency | Applies to |
|---|---|---|
| Tower | 119.8 | Airport-wide |
| Tower | 257.8 | Airport-wide |
| Ground | 121.9 | Airport-wide |
| Ground | 348.6 | Airport-wide |
| Clearance delivery | 126.7 | Airport-wide |
| D-ATIS | 118.9 | Airport-wide |
Show all frequencies (15 more: approach and departure sectors, secondary and other)
| Service | Frequency | Applies to |
|---|---|---|
| UNICOM | 122.95 | Airport-wide |
| Approach / departure | 118.05 | Sector: 141-270 SAT |
| Approach / departure | 121.375 | Airport-wide |
| Approach / departure | 124.45 | Sector: 360-090 SAT |
| Approach / departure | 125.1 | Sector: 271-359 SAT |
| Approach / departure | 125.7 | Airport-wide |
| Approach / departure | 127.1 | Airport-wide |
| Approach / departure | 128.05 | Sector: 091-140 SAT |
| Approach / departure | 251.125 | Airport-wide |
| Approach / departure | 257.625 | Sector: 115-154 SAT/035-056 SAT |
| Approach / departure | 290.225 | Airport-wide |
| Approach / departure | 307.0 | Sector: 271-359 SAT |
| Approach / departure | 318.1 | Sector: 091-149 SAT |
| Approach / departure | 335.625 | Sector: 360-090 SAT |
| Approach / departure | 353.5 | Sector: 141-270 SAT |
The FAA record does not sectorize KSAT's frequencies by runway; every row applies airport-wide. Source: FAA NASR FRQ, cycle 2026-10-01. Verify on the current chart supplement before use.
Runway 13R/31L overview
Physical characteristics from the FAA-derived runway record.
- Length
- 8,502 ft
- Width
- 150 ft
- Surface
- Concrete · Poor condition
- Surface treatment
- Grooved
- Weight bearing (lb)
- S 95k · D 190k · 2D 270k
- PCN
- 810
- Runway lights
- Lighted
- Airport elevation
- 809 ft
- Published FAA baseline
- Open
- Published NASR record; does not reflect temporary closures or restrictions. Current operational status is the card at the top of the page.
- True heading
- 132°
- Magnetic
- 128°
- Published FAA baseline
- Open
- Threshold elevation
- 809 ft
- TDZ elevation
- 809 ft
- Displaced threshold
- None on record
- Threshold crossing height
- 75 ft
- Visual glide path
- 3°
- Traffic pattern
- Left
- True heading
- 312°
- Magnetic
- 308°
- Published FAA baseline
- Open
- Threshold elevation
- 779 ft
- TDZ elevation
- 790 ft
- Displaced threshold
- None on record
- Threshold crossing height
- 82 ft
- Visual glide path
- 3°
- Traffic pattern
- Left
- Controlling obstruction
- bldg, 79 ft, 3,500 ft from threshold, 41:1 slope
Runway 13R/31L numbers are magnetic; the stored geometry and every wind calculation on this page are TRUE north, so they never need a variation correction. Magnetic headings use the FAA's published variation for this airport, 4.0°E (2020), the same value printed on the FAA airport diagram. Surface condition, treatment, weight bearing, thresholds and traffic pattern are from the FAA NASR record (cycle 2026-10-01); lighting, ILS and LAHSO are in their own sections above. Declared distances are not shown in this phase.
Configuration history at KSAT
Observed runway usage: how often the tower's TFDM configuration listed each end, by window, flow, wind and time of day (the tower's own statement, via FAA SWIM).
- 7-day analysis: Ready
- 30-day analysis: Ready
- 90-day analysis: Collecting · 30 / 90 days
- 12-month analysis: Collecting · 30 / 365 days
Runway percentages are measured independently. Multiple runways can be active simultaneously, so totals may exceed 100%.
- Most-used arrival ends at the airport
- 13L (100%) · 13R (100%)
- Most-used departure ends
- 13L (100%) · 13R (100%) · 04 (100%)
Insufficient history for flow shares: 24 of the 48 hours of stated configuration needed have been recorded.
- Most-used arrival ends at the airport
- 13L (100%) · 13R (100%)
- Most-used departure ends
- 13L (100%) · 13R (100%) · 04 (100%)
- Southeast flow100%(168 h)
- 100% · arrivals 13L · 13R · departures 04 · 13L · 13R(Southeast flow)
- Most-used arrival ends at the airport
- 13L (100%) · 13R (100%)
- Most-used departure ends
- 13L (100%) · 13R (100%) · 04 (100%)
- Southeast flow100%(720 h)
- 100% · arrivals 13L · 13R · departures 04 · 13L · 13R(Southeast flow)
| Wind from | Hours | 13R arrivals | 31L arrivals | 13R departures | 31L departures |
|---|---|---|---|---|---|
| Calm / light (< 5 kt) | 720 | 100% | 0% | 100% | 0% |
Bars: share of each local hour in which an end of this runway was named for arrivals. Patterns are described, not explained.
Observed runway usage — 720 hours of tower TFDM runway configuration history collected · 1 distinct configuration observed · through Nov 3, 2026. Shares are the fraction of recorded hours in which the tower's TFDM configuration listed each end. Wind sectors use the wind reported when each configuration began. Nothing here is inferred from wind; the wind-favored analysis for KSAT is a separate module. 90-day, 12-month and seasonal views appear once the record is long enough.
Historical wind and crosswind on runway 13R/31L
20-year hourly climatology from the ASOS archive, computed per runway end.
From 175,111 hourly observations at KSAT (2005–2025), 154,379 with a steady wind direction (11.8% calm, variable or direction-less). One observation per clock hour; TRUE headings against TRUE wind.
Crosswind on runway 13R/31L (either end)
| Crosswind (kt) | Share of wind hours |
|---|---|
| 0–5 | 64.9% |
| 5–10 | 29.7% |
| 10–15 | 5% |
| 15–20 | 0.4% |
| 20–25 | 0% |
| 25+ | 0% |
Strongest-crosswind month on average: Feb; calmest: Jul. Percentiles are streaming approximations (t-digest), accurate to about 0.1 kt.
Runway 13R
Runway 31L
“Most wind-favored end” is meteorological analysis: the share of steady-wind hours (2005–2025) in which this end had the most headwind of every open runway end at KSAT. It does not mean ATC selected the runway that often (parallel ends with the same heading share the credit equally). Observed runway use, where available, is the configuration-history section above.
By wind direction
| Wind from | Share of wind hours | 13R favored | 31L favored | Mean crosswind | Crosswind > 15 kt |
|---|---|---|---|---|---|
| N 338–023° | 13% | 0% | 14.4% | 7.1 kt | 2.1% |
| NE 023–068° | 8% | 0% | 0% | 6.7 kt | 1.2% |
| E 068–113° | 11% | 34% | 0% | 4 kt | 0% |
| SE 113–158° | 25% | 50% | 0% | 1.8 kt | 0% |
| S 158–203° | 25% | 29.8% | 0% | 5.5 kt | 0% |
| SW 203–248° | 4% | 0% | 0% | 6.7 kt | 0.3% |
| W 248–293° | 3% | 0% | 33.9% | 3.6 kt | 0.2% |
| NW 293–338° | 9% | 0% | 50% | 1.1 kt | 0% |
By time of day (airport-local)
Seasonal runway conditions
| Month | Mean crosswind (kt) |
|---|---|
| Jan | 4.7 kt |
| Feb | 5.0 kt |
| Mar | 4.5 kt |
| Apr | 4.4 kt |
| May | 4.1 kt |
| Jun | 4.1 kt |
| Jul | 3.9 kt |
| Aug | 4.0 kt |
| Sep | 3.9 kt |
| Oct | 4.1 kt |
| Nov | 4.4 kt |
| Dec | 4.4 kt |
| Month | Prevailing | Mean wind | Gusty | Mean xw | xw > 10 | xw > 15 | xw > 20 | 13R tail > 5 | 31L tail > 5 | IFR | TS | Fog |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | N | 6.7 kt | 12.6% | 4.7 kt | 8.5% | 0.5% | 0% | 22% | 16% | 12.6% | 0.38% | 11% |
| Feb | N | 7.4 kt | 16.2% | 5 kt | 9.7% | 0.6% | 0% | 19.5% | 26.1% | 15.9% | 0.42% | 12.7% |
| Mar | SE | 8.3 kt | 19.1% | 4.5 kt | 7.3% | 0.7% | 0% | 14.2% | 45.3% | 11.8% | 0.84% | 8.9% |
| Apr | SE | 8.7 kt | 20.1% | 4.4 kt | 6.2% | 0.5% | 0% | 11.3% | 54% | 9% | 1.36% | 7.2% |
| May | SE | 8.9 kt | 18.6% | 4.1 kt | 4.4% | 0.4% | 0% | 5.8% | 61.4% | 5.8% | 2.35% | 4.5% |
| Jun | SE | 8.6 kt | 17.3% | 4.1 kt | 2.8% | 0.2% | 0% | 2.3% | 67.4% | 3% | 1.33% | 1.2% |
| Jul | S | 8.1 kt | 15% | 3.9 kt | 1.9% | 0.1% | 0% | 1.2% | 65% | 3% | 1.07% | 1.2% |
| Aug | S | 7.6 kt | 12.8% | 4 kt | 2.2% | 0.2% | 0% | 2.3% | 57.1% | 1.7% | 0.74% | 0.7% |
| Sep | SE | 6.3 kt | 8.3% | 3.9 kt | 3.6% | 0.2% | 0% | 7.5% | 38.1% | 3.9% | 0.88% | 1.7% |
| Oct | S | 6.7 kt | 11.7% | 4.1 kt | 5.4% | 0.4% | 0% | 10.9% | 36.2% | 6.3% | 0.66% | 3.2% |
| Nov | S | 6.5 kt | 11.3% | 4.4 kt | 7.2% | 0.5% | 0% | 15.4% | 26.4% | 9% | 0.35% | 6.5% |
| Dec | N | 6.3 kt | 10.9% | 4.4 kt | 6.6% | 0.6% | 0% | 18.5% | 19.2% | 14.4% | 0.26% | 12% |
IFR, thunderstorm (TS) and fog columns are airport-wide shares of hours; the crosswind and tailwind columns are specific to this runway. Prevailing = most common 45° wind sector among wind hours.
Runway 13R/31L closure history
Kept per source with its provenance: D-ATIS-observed, NOTAM-observed and the FAA published baseline are never merged.
- 13R reported closed on 3 calendar days (37 broadcasts; first seen 2026-10-26 02:55Z, last seen 2026-10-28 07:40Z)
- 31L reported closed on 3 calendar days (37 broadcasts; first seen 2026-10-26 02:55Z, last seen 2026-10-28 07:40Z)
Normalised status: closed on those days as stated in the broadcast text (shown verbatim in the live band above). History is incomplete until 30 days of coverage exist.
- 10/095 · closure (full) · runway 13R/31Leffective 2026-10-28 03:00Z → 2026-10-28 11:00Z · first seen 2026-10-28 02:36Z · last seen 2026-10-28 07:40Z · cancelled 2026-10-28 07:40Z
!SAT 10/095 SAT RWY 13R/31L CLSD 2610280300-2610281100
- 10/076 · closure (full) · runway 13R/31Leffective 2026-10-27 03:00Z → 2026-10-27 11:00Z · first seen 2026-10-23 18:06Z · last seen 2026-10-23 18:06Z
!SAT 10/076 SAT RWY 13R/31L CLSD 2610270300-2610271100
- 10/070 · closure (full) · runway 13R/31Leffective 2026-10-26 13:00Z → 2026-10-26 21:00Z · first seen 2026-10-21 00:02Z · last seen 2026-10-21 00:02Z
!SAT 10/070 SAT RWY 13R/31L CLSD 2610261300-2610262100
- 10/075 · closure (full) · runway 13R/31Leffective 2026-10-26 03:00Z → 2026-10-26 12:59Z · first seen 2026-10-23 17:55Z · last seen 2026-10-23 17:55Z
!SAT 10/075 SAT RWY 13R/31L CLSD 2610260300-2610261259
- 09/103 · closure (full) · runway 13R/31Leffective 2026-09-28 13:00Z → 2026-09-28 15:00Z · first seen 2026-09-28 12:51Z · last seen 2026-09-28 14:47Z · cancelled 2026-09-28 14:47Z
!SAT 09/103 SAT RWY 13R/31L CLSD 2609281300-2609281500
- 09/103 · closure (full) · runway 13R/31Leffective 2026-09-28 13:00Z → 2026-09-28 15:00Z · first seen 2026-09-28 14:48Z · last seen 2026-09-28 14:48Z
RWY 13R/31L CLSD
Runway 13R/31L: Open on the published record — a baseline that does not reflect temporary closures or restrictions, not the current operational status.
Recent pilot reports involving runway 13R/31L
Official PIREPs that name this runway explicitly, past 6 hours.
No pilot report in the last 6 hours names runway 13R/31L at KSAT explicitly. Reports near the airport that do not name a runway are on the airport page.
Instrument approaches to runway 13R/31L
From the FAA d-TPP, linked to the official plates.
Runway 13R
- ILSILS OR LOC RWY 13R ↗precision
- ILSILS RWY 13R (CAT II) ↗precision
- RNAV (GPS)RNAV (GPS) Y RWY 13R ↗
- RNAV (RNP)RNAV (RNP) Z RWY 13R ↗
Runway 31L
- ILSILS OR LOC RWY 31L ↗precision
- RNAV (GPS)RNAV (GPS) Y RWY 31L ↗
- RNAV (RNP)RNAV (RNP) Z RWY 31L ↗
10 departure procedures · 16 STARs · FAA hot spots page ↗ · FAA d-TPP cycle 2611. Plates open on aeronav.faa.gov (public domain); ATIS Alerts does not reproduce charts or minimums.
Methodology and sources
Short version below; the full write-up is at Runway Intelligence methodology, and every launched airport is listed on the Runway Intelligence hub.
- Active runwayscome first from the tower's TFDM (Terminal Flight Data Manager) airport configuration, received as structured data through the FAA SWIM Cloud Distribution Service at towers that have it (KSAT does); otherwise from the airport's D-ATIS text (community relay of the FAA broadcast) with an open, tested parser, and the broadcast text is always shown. Every change is recorded, so “recorded use” is what the facility stated, never an inference. ATIS Alerts is not an FAA product and this is not FAA data; SWIM content is for non-operational use.
- Flowis the compass direction of the stated arrival ends (eight sectors, named only when every arrival end points within 30° of the others and clear of a sector edge); a tower's own configuration name is used when it carries a direction word. Stored separately from the runway sets.
- Equipment, LAHSO and frequencies come from the FAA NASR 28-day subscription (cycle 2026-10-01): approach lights, visual glide slope, edge / centerline / touchdown-zone lights, REIL, ILS components with FAA status, RVR, markings, LAHSO hold-short points and available landing distances, and facility frequencies with their published sectorization. Outage annotations are readings of the NOTAM or D-ATIS text shown beside them. Blank FAA fields read “Not available”.
- Wind components use the current METAR (aviationweather.gov) against TRUE runway headings from the OurAirports/FAA runway record.
- Runway visual range, tower demand and traffic-management restrictions come from FAA SWIM: STDDS Airport Data (RVR and light settings, about 130 airports) and TFDM (15-minute runway demand, APREQ/MIT restrictions). Each block is stamped with its own time; none of it is an FAA product or a clearance.
- Predicted runway scores each open end from the TAF wind (headwind, crosswind penalty, tailwind avoidance, longest-runway tie-break), excludes stated closures, and — once a wind sector has 24 h of recorded use — adjusts confidence by what the facility did under similar wind; every row lists its reasons. It does not model noise abatement or flow programs beyond what the record shows.
- History thresholds: usage shares need 12 / 48 / 168 recorded hours for the 24-hour / 7-day / 30-day windows; a wind sector needs 24 h and 5 days; time-of-day needs 7 days and 20 h per daypart; flow shares need 48 h. Below a bar the module says so instead of showing a percentage.
- Climatology: Iowa Environmental Mesonet ASOS archive, one observation per hour, 45° wind sectors, percentiles via t-digest; runway geometry is today's record applied to all years. Methodology v1.
- PIREPs: official reports from aviationweather.gov are attached only when the text names this runway and the report is tied to KSAT by identifier or by position within 15 NM. Approaches: FAA d-TPP metafile, current charting cycle; plates link to aeronav.faa.gov. No minimums are reproduced.
- Data freshness: METAR and D-ATIS refresh every minute on this page; the D-ATIS recorder ran 4 min ago; the tower TFDM feed last delivered 10 min ago; usage rollups every 3 h; climatology through 2025-12-31.
Get free ATIS alerts for KSAT
We'll message you on Telegram the moment KSAT (San Antonio International Airport)'s ATIS letter changes or it drops below VFR, so you check weather only when it actually matters.
Track KSAT on TelegramFree • no app to install • unsubscribe anytime
Other runways at KSAT
Tools for this runway
Active runway - past 30 days
Share of stated hours each end was named for arrivals at KSAT. From the tower TFDM configuration, not wind. Shares are measured independently, so parallels active together can each read 100%.
- 13L100%dep 100%
- 13R100%dep 100%
- 040%dep 100%
30.0 days of stated configuration on record · 0 configuration changes · 1 distinct configuration.
KSAT airport diagram
Official FAA taxiway and runway layout. Tap to zoom.
Official FAA airport diagram · d-TPP cycle 2611 · Not for navigation. Download the official FAA PDF ↗
⚠️ ATIS Alerts provides informational runway analysis based on available weather, the tower's TFDM configuration and NOTAMs received through FAA SWIM, D-ATIS text, FAA data and historical observations. Active runways shown here are what the tower or its D-ATIS stated and may lag or be misread; NOTAM coverage is not complete; predicted runways are an ATIS Alerts estimate, not an ATC assignment; equipment states are readings of the official text shown with them. Not an FAA product. Not for operational use. Always verify with official FAA-approved preflight weather sources before flight.