Flights Houston → San Antonio
IAH → SAT
Route overview
The flight route from Houston to San Antonio operates with an average on-time performance of 85%, with flights typically experiencing a mean delay of 6.5 minutes. Over the past year, there have been 707 total flights on this route, utilizing various aircraft models including Boeing 737-800, Airbus A319, Boeing 737-700, Boeing 737-900, and Airbus A320. The destination airport in San Antonio, which opened in 1942, serves approximately 9.5 million passengers annually.
Your rights on this US flight (DOT)
US flights have no statutory cash compensation for delays. Under the US DOT rules, if your flight is cancelled or significantly changed and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Amenities for controllable delays depend on each airline's contract of carriage.
US flight refund rules & checker →General information, not legal advice.
The Houston (IAH) → San Antonio (SAT) route is operated by United Airlines. Across 950 flights monitored in recent months, 83% arrived on time (within 15 min of schedule), with an average delay of 9 minutes. The cancellation rate is 3.05%. FlightGuard's average computed risk is 31.1/100 (medium), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At San Antonio the average ATFM delay is 2.0 minutes (main cause: atfm). Departing from Houston the average ATFM delay is 2.0 minutes.
Heading to San Antonio: what to expect in this direction
Flying from Houston (IAH) to San Antonio (SAT) heads west for about 306 km, a flight time of roughly 48m.
Departures from Houston on this leg cluster in the morning window: about 38% of IAH-SAT flights take off then.
Air-traffic congestion: departing Houston the average ATFM delay is 2.0 min (atfm); arriving into San Antonio it is 2.0 min (atfm).
Across 950 tracked IAH-SAT flights, 83% left on time with an average delay of 9 min and a 3.0% cancellation rate.
Route facts
Flights on this route
Check the risk of a specific flight.
Flexible on this trip? Compare flights
Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| United Airlines (UA) | 74% | 10 min | 6.9% |
Airlines operating IAH-SAT
Airports
Frequently asked questions about IAH-SAT
On the Houston (IAH) -> San Antonio (SAT) route, on-time performance is 83% with an average delay of 9 minutes, based on 950 tracked flights.
The cancellation rate on Houston-San Antonio is 3.05% across 950 monitored flights.
The route is operated by 1 airline: United Airlines.
Enter your flight number on FlightGuard for a real-time analysis based on 9 factors: weather at San Antonio, ATC delays, strikes, NOTAMs, fuel, airline punctuality and recent trends.
US flights have no statutory cash compensation for delays. Under US DOT rules, if the airline cancels or significantly changes your flight and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Meals or hotels for controllable delays depend on each airline's contract of carriage.
