Route Reliability
San Antonio → Houston
SAT–IAH · 191 miles · San Antonio International Airport to George Bush Intercontinental Airport
- 83%
- Arrive within 15 minutes
- 6 min
- Average arrival delay
- 1.2%
- Cancelled
- 2,894
- Flights in the data
Data through May 2026.
United Airlines is the only airline in this data on this route, arriving on time 83% of the time across 2,894 flights. No comparison to make.
What the data says
Morning-you made the right choice.
SAT–IAH flights departing between 3–6 AM arrived on time 95% of the time, versus 75% between 3–6 PM.
Sunday scaries are real for this one.
SAT–IAH flights arrived on time 88% of the time on Tuesdays. On Sundays: 80%.
Recent months have been rougher.
SAT–IAH flights arrived on time 83% of the time over the last three months in the data, compared with 91% in the three months before that.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon84%(408 flights)
- Tue88%(407 flights)
- Wed85%(404 flights)
- Thu80%(402 flights)
- Fri81%(412 flights)
- Sat83%(405 flights)
- Sun80%(416 flights)
- 3–6 AM95%(348 flights)
- 6–9 AM79%(359 flights)
- 9 AM–12 PM88%(661 flights)
- 12–3 PM80%(424 flights)
- 3–6 PM75%(607 flights)
- 6–9 PM83%(455 flights)
Jun 74% → May 84% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 74% | 228 |
| July 2025 | 75% | 241 |
| August 2025 | 79% | 245 |
| September 2025 | 85% | 239 |
| October 2025 | 77% | 247 |
| November 2025 | 84% | 231 |
| December 2025 | 88% | 241 |
| January 2026 | 92% | 237 |
| February 2026 | 93% | 219 |
| March 2026 | 82% | 240 |
| April 2026 | 83% | 240 |
| May 2026 | 84% | 246 |
Same trip, other airports
Keep nerding
Based on 2,894 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.