Flights St. Louis → San Francisco
STL → SFO
Route overview
The flight route from St. Louis to San Francisco operates with an average on-time performance of 75%, experiencing a mean delay of 24.6 minutes per flight. Over the course of a year, this route sees approximately 197 flights using either Airbus A320 or A319 aircraft, serving a destination airport that handles nearly 50 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 St. Louis (STL) → San Francisco (SFO) route is operated by United Airlines. Across 197 flights monitored in recent months, 75% arrived on time (within 15 min of schedule), with an average delay of 25 minutes. The cancellation rate is 1.52%. FlightGuard's average computed risk is 21.1/100 (medium), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At San Francisco the average ATFM delay is 2.0 minutes (main cause: atfm). Departing from St. Louis the average ATFM delay is 2.0 minutes.
Heading to San Francisco: what to expect in this direction
Flying from St. Louis (STL) to San Francisco (SFO) heads west for about 2,786 km, a flight time of roughly 3h 54m.
Departures from St. Louis on this leg cluster in the overnight window: about 70% of STL-SFO flights take off then.
Air-traffic congestion: departing St. Louis the average ATFM delay is 2.0 min (atfm); arriving into San Francisco it is 2.0 min (atfm).
Across 197 tracked STL-SFO flights, 75% left on time with an average delay of 25 min and a 1.5% cancellation rate.
Route facts
Flights on this route
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| United Airlines (UA) | 74% | 10 min | 6.9% |
Airlines operating STL-SFO
Airports
Frequently asked questions about STL-SFO
On the St. Louis (STL) -> San Francisco (SFO) route, on-time performance is 75% with an average delay of 25 minutes, based on 197 tracked flights.
The cancellation rate on St. Louis-San Francisco is 1.52% across 197 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 Francisco, 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.
