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Airport · 12 months to July 2026
San Antonio International: delays and on-time record
San Antonio, Texas
BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report. Data through July 2026; this is a monthly history, not live airport status.
Reporting carriers scheduled 40,226 domestic departures from San Antonio International (SAT), San Antonio, in the 12 months to July 2026: about 110 a day to 40 destinations.
80.3% of those flights left the gate less than 15 minutes late, 4.2 points above the national departure figure of 76.1%. Flights arriving at SAT were on time 76.0% of the time, level with the national arrival figure of 76.0%.
1.2% of scheduled departures were cancelled (national: 1.8%), and the average departure delay, counting early and on-time departures as zero, was 14.7 min.
Southwest Airlines is the largest reporting carrier at SAT with 38% of departures. Among carriers with at least 402 departures, SkyWest Airlines had the highest on-time arrival share for its SAT departures (84.5%) and Envoy Air the lowest (73.5%).
On-time departures are down 1.6 points on the previous 12 months (81.9%).
Of the delay minutes that carriers assigned to a BTS cause category for flights leaving SAT, late-arriving aircraft 43%, air carrier 29% and national aviation system 20%.
- On time 80.6%
- Arrived 15+ minutes late 17.8%
- Cancelled 1.2%
- Diverted 0.3%
As origin and as destination, against the nation
| Measure | Departures from SAT | Arrivals at SAT | All reported flights | SAT departures, previous 12 months |
|---|---|---|---|---|
| Departed on time (less than 15 min late) | 80.3% | 73.1% | 76.1% | 81.9% |
| Arrived on time | 80.6% | 76.0% | 76.0% | 82.1% |
| Cancelled | 1.2% | 1.2% | 1.8% | 1.1% |
| Diverted | 0.3% | 0.2% | 0.3% | 0.2% |
| Average departure delay (late minutes only) | 14.7 min | 17.1 min | 17.4 min | 14.0 min |
| Arrival delay minutes per 100 flights | 1,414 | 1,538 | 1,684 | 1,362 |
| Scheduled flights | 40,226 | 40,228 | 7,043,858 | 41,980 |
12 months to July 2026. The first column follows flights that left SAT; the second follows flights that landed there. Year on year, on-time departures moved −1.6 pts.
Airlines at SAT
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| WN Southwest Airlines | 15,197 | 38% | 79.7% | 3.8 min | 0.5% |
| AA American Airlines | 7,449 | 19% | 79.0% | 11.9 min | 2.4% |
| DL Delta Air Lines | 6,848 | 17% | 84.4% | 1.0 min | 1.5% |
| UA United Airlines | 5,664 | 14% | 82.6% | 4.2 min | 0.8% |
| OO SkyWest Airlines | 1,631 | 4% | 84.5% | 5.1 min | 1.2% |
| MQ Envoy Air | 1,023 | 3% | 73.5% | 9.5 min | 2.6% |
| F9 Frontier Airlines | 926 | 2% | 76.9% | 9.4 min | 0.5% |
| NK Spirit Airlines | 824 | 2% | 76.0% | 7.4 min | 3.6% |
| AS Alaska Airlines | 558 | 1% | 77.6% | 2.7 min | 1.3% |
| YX Republic Airline | 101 | 0% | 70.3% | 3.8 min | 5.0% |
Departures from SAT by reporting carrier, ordered by flights; on time means the flight reached its destination less than 15 minutes late. Green is at or above the airport's overall share of 80.6%. Carriers fly different routes at different hours, so the rows are not a like-for-like test.
Busiest routes from SAT
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| SAT–DFW | San Antonio to Dallas/Fort Worth | 4,375 | 75.3% | 15.5 min | 3.2% |
| SAT–DEN | San Antonio to Denver | 3,040 | 81.3% | 4.3 min | 0.4% |
| SAT–ATL | San Antonio to Atlanta | 2,999 | 83.9% | 1.5 min | 1.7% |
| SAT–DAL | San Antonio to Dallas | 2,743 | 82.1% | 2.2 min | 1.1% |
| SAT–PHX | San Antonio to Phoenix | 2,509 | 81.1% | 5.5 min | 0.4% |
| SAT–IAH | San Antonio to Houston | 2,405 | 81.5% | 4.2 min | 0.6% |
| SAT–LAS | San Antonio to Las Vegas | 2,040 | 79.3% | 3.7 min | 0.5% |
| SAT–ORD | San Antonio to Chicago | 1,979 | 74.6% | 9.1 min | 2.3% |
| SAT–LAX | San Antonio to Los Angeles | 1,846 | 85.9% | 1.0 min | 0.4% |
| SAT–CLT | San Antonio to Charlotte | 1,378 | 85.5% | 7.5 min | 1.7% |
| SAT–HOU | San Antonio to Houston | 1,347 | 74.8% | 6.0 min | 0.3% |
| SAT–MCO | San Antonio to Orlando | 1,054 | 75.7% | 10.7 min | 1.6% |
| SAT–SLC | San Antonio to Salt Lake City | 1,009 | 85.6% | -0.8 min | 0.9% |
| SAT–BNA | San Antonio to Nashville | 952 | 77.1% | 7.5 min | 0.5% |
| SAT–DTW | San Antonio to Detroit | 944 | 89.7% | -4.4 min | 0.7% |
| SAT–MSP | San Antonio to Minneapolis | 893 | 84.2% | -0.7 min | 1.2% |
| SAT–ELP | San Antonio to El Paso | 747 | 79.5% | 3.8 min | 0.1% |
| SAT–BWI | San Antonio to Baltimore | 732 | 79.5% | 4.4 min | 1.8% |
| SAT–MDW | San Antonio to Chicago | 661 | 75.8% | 7.4 min | 1.1% |
| SAT–IAD | San Antonio to Washington | 641 | 92.5% | -3.6 min | 0.6% |
| SAT–SAN | San Antonio to San Diego | 610 | 77.4% | 4.6 min | 0.3% |
| SAT–EWR | San Antonio to Newark | 575 | 84.5% | 0.4 min | 1.0% |
| SAT–SEA | San Antonio to Seattle | 558 | 77.6% | 2.7 min | 1.3% |
| SAT–STL | San Antonio to St. Louis | 548 | 85.6% | 0.4 min | 0.0% |
| SAT–MIA | San Antonio to Miami | 483 | 87.4% | 0.6 min | 0.8% |
| SAT–SFO | San Antonio to San Francisco | 434 | 85.3% | 2.8 min | 0.5% |
| SAT–TPA | San Antonio to Tampa | 374 | 78.1% | 5.7 min | 0.3% |
| SAT–JFK | San Antonio to New York | 362 | 77.9% | 8.9 min | 4.4% |
| SAT–BOS | San Antonio to Boston | 356 | 58.4% | 26.9 min | 2.2% |
| SAT–DCA | San Antonio to Washington | 351 | 87.5% | 4.6 min | 2.3% |
| SAT–MSY | San Antonio to New Orleans | 346 | 83.2% | 1.0 min | 0.3% |
| SAT–MCI | San Antonio to Kansas City | 270 | 80.4% | 7.8 min | 0.0% |
| SAT–PHL | San Antonio to Philadelphia | 266 | 80.8% | 10.2 min | 2.3% |
| SAT–FLL | San Antonio to Fort Lauderdale | 224 | 74.6% | 6.3 min | 4.5% |
The 34 busiest of 40 routes with reported flights. Routes with at least 10 flights a month have their own page.
Month by month
By scheduled departure hour
Among hours with at least 805 departures, 5 am to 6 am had the highest on-time share (93.4% of 3,291 flights) and 8 pm to 9 pm the lowest (55.9% of 973).
Delay causes
Cancellations by reported reason (496 in the period): air carrier 32%, weather 62%, national aviation system 6%, security 0%.
Checkpoint volumes
TSA publishes daily checkpoint passenger counts for the country as a whole, not for SAT on its own. The national series through September 2026 is on the checkpoint volumes page.
Questions and answers
How often do flights leave SAT on time?
80.3% of the 40,226 scheduled domestic departures in the 12 months to July 2026 left less than 15 minutes late; the national figure was 76.1%. 1.2% were cancelled.
How often do flights arrive at SAT on time?
76.0% of 40,228 scheduled arrivals were on time by the BTS definition, against 76.0% nationally.
Which airline has the highest on-time share at SAT?
Counting departures from SAT and whether they reached their destination on time, SkyWest Airlines had the highest share (84.5% of 1,631 flights), then Delta Air Lines (84.4%) and United Airlines (82.6%). Carriers fly different routes at different hours, so the figures are not a like-for-like test.
What causes delays at SAT?
For departures from SAT that reached their destination 15 or more minutes late, carriers attributed the delay minutes as follows: late-arriving aircraft 43%, air carrier 29%, national aviation system 20%, extreme weather 8%, security 0%.
What time of day has the highest on-time share at SAT?
Departures scheduled from 5 am to 6 am local time left on time 93.4% of the time, the highest of any hour with enough flights to compare; 8 pm to 9 pm was lowest at 55.9%.
Is it getting better?
On-time departures for the 12 months to July 2026 were 80.3%, down 1.6 points on the previous 12 months (81.9%). The monthly chart shows each of the last 36 months, and each month has its own page.
Does this page show today's delays at SAT?
No. BTS publishes on-time records about two months after the month ends, so this page is a monthly history through July 2026. For live conditions use the FAA airport status service or your airline.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987 to present), monthly files August 2023 to July 2026; airport name from the BTS airport lookup table. US government works in the public domain. Domestic scheduled flights by reporting carriers only: international flights, charters and smaller carriers are not in the source. Totals and averages only; no individual flight or aircraft is identified. See the methodology; report processing errors through corrections.