Flights San Antonio → St. Louis
SAT → STL
Route overview
The flight route from San Antonio to St. Louis operates with a Boeing 737-300 aircraft and has an on-time performance rate of 84%, with an average delay of 7.2 minutes per flight. Over the past year, this route has seen 137 flights, connecting passengers from San Antonio International Airport, which opened in 1942, to Lambert-St. Louis International Airport, serving over 13,665,517 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 San Antonio (SAT) → St. Louis (STL) route is operated by Southwest Airlines. Across 169 flights monitored in recent months, 85% arrived on time (within 15 min of schedule), with an average delay of 6 minutes. The cancellation rate is 1.78%. FlightGuard's average computed risk is 16.2/100 (medium), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At St. Louis the average ATFM delay is 2.0 minutes (main cause: atfm). Departing from San Antonio the average ATFM delay is 2.0 minutes.
Heading to St. Louis: what to expect in this direction
Flying from San Antonio (SAT) to St. Louis (STL) heads north-east for about 1,266 km, a flight time of roughly 2h 0m.
Departures from San Antonio on this leg cluster in the overnight window: about 56% of SAT-STL flights take off then.
Air-traffic congestion: departing San Antonio the average ATFM delay is 2.0 min (atfm); arriving into St. Louis it is 2.0 min (atfm).
Across 169 tracked SAT-STL flights, 85% left on time with an average delay of 6 min and a 1.8% cancellation rate.
Route facts
Flights on this route
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| Southwest Airlines (WN) | 73% | 6 min | 3.1% |
Airlines operating SAT-STL
Airports
Frequently asked questions about SAT-STL
On the San Antonio (SAT) -> St. Louis (STL) route, on-time performance is 85% with an average delay of 6 minutes, based on 169 tracked flights.
The cancellation rate on San Antonio-St. Louis is 1.78% across 169 monitored flights.
The route is operated by 1 airline: Southwest Airlines.
Enter your flight number on FlightGuard for a real-time analysis based on 9 factors: weather at St. Louis, 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.
