San Antonio (SAT) to Houston (IAH) flights
United Airlines, Mesa Airlines, SkyWest Airlines fly nonstop from San Antonio International Airport to George Bush Intercontinental Airport, with about 56 flights a week in July 2026. The 191-mile flight takes about 1h 6m gate to gate.
- Distance
- 191 mi · 307 km
- Flight time
- 1h 6m
- Airlines
- 3
- Seats filled
- 76%
Airlines flying SAT to IAH
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| United Airlines | 36 | Airbus A319, Boeing 737-700 / MAX 7, Boeing 737-800 | 265,376 | 1h 6m |
| Mesa Airlines | 15 | Embraer E175 | 25,002 | 1h 4m |
| SkyWest Airlines | 5 | Embraer E175, Bombardier CRJ200 | 4,721 | 1h 12m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
SAT to IAH flight schedule
15 flight numbers flew this route in August 2026, 4 of them almost daily. The first usually leaves at 5:30am and the last at 7:20pm. Times are local and can change; check with the airline before you book.
| Flight | Departs | Arrives | Days flown in August 2026 | On time (12 months) |
|---|---|---|---|---|
| UA 2084United Airlines | 5:30am | 6:33am | 7 | n/a |
| UA 469United Airlines | 5:30am | 6:37am | 10 | 96% |
| UA 6248United Airlines · operated by Mesa Airlines | 5:30am | 6:36am | 14 | 93% |
| UA 410United Airlines | 7:35am | 8:50am | 31 | 87% |
| UA 2821United Airlines | 9:30am | 10:43am | 21 | 100% |
| UA 2827United Airlines | 9:37am | 10:44am | 10 | 83% |
| UA 6198United Airlines · operated by Mesa Airlines | 11:34am | 12:43pm | 12 | 100% |
| UA 6278United Airlines · operated by Mesa Airlines | 11:43am | 12:55pm | 10 | 92% |
| UA 2471United Airlines | 12:00pm | 1:07pm | 9 | n/a |
| UA 5518United Airlines · operated by SkyWest Airlines | 2:15pm | 3:24pm | 18 | 94% |
| UA 6281United Airlines · operated by Mesa Airlines | 2:15pm | 3:27pm | 10 | 82% |
| UA 404United Airlines | 4:12pm | 5:25pm | 31 | 78% |
| UA 2323United Airlines | 5:57pm | 7:04pm | 10 | 67% |
| UA 465United Airlines | 5:59pm | 7:10pm | 21 | 91% |
| UA 5658United Airlines · operated by SkyWest Airlines | 7:20pm | 8:33pm | 7 | 90% |
Is SAT to IAH on time?
From September 2025 to August 2026, 84% of 2,871 flights arrived within 15 minutes of schedule and 0.7% were cancelled. Flights leaving around 5am were the most punctual (95%), those around 4pm the least (75%). Most delay time was caused by air traffic control and airport congestion (47%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 2,871 | 84% | 11 min | 0.7% |
Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.
On-time arrivals by departure time
| Scheduled departure | Flights | On time, relative | On time |
|---|---|---|---|
| 5am to 6am | 360 | 95% | |
| 7am to 8am | 365 | 79% | |
| 9am to 10am | 365 | 84% | |
| 11am to 12pm | 348 | 91% | |
| 2pm to 3pm | 365 | 85% | |
| 4pm to 5pm | 365 | 75% | |
| 5pm to 6pm | 269 | 79% | |
| 6pm to 7pm | 118 | 78% | |
| 7pm to 8pm | 299 | 90% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 250 | 23,415 | |
| September 2025 | 239 | 24,342 | |
| October 2025 | 252 | 26,706 | |
| November 2025 | 234 | 23,529 | |
| December 2025 | 242 | 26,399 | |
| January 2026 | 239 | 22,198 | |
| February 2026 | 223 | 22,331 | |
| March 2026 | 256 | 28,396 | |
| April 2026 | 243 | 24,899 | |
| May 2026 | 248 | 25,222 | |
| June 2026 | 245 | 24,443 | |
| July 2026 | 250 | 24,925 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.