Flights St. Louis → San Diego
STL → SAN
How long is the flight from St. Louis to San Diego?
The flight from St. Louis (STL) to San Diego (SAN) takes 3h 43m on average. That is the median time recorded across 1 scheduled flight on this leg; the actual time varies by a few minutes with wind, routing and take-off queues.
Route overview
The flight route from St. Louis to San Diego operates with a punctuality rate of 76%, experiencing an average delay of 9.9 minutes per flight. The destination airport, which opened in 1928, serves over 22 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 Diego (SAN) route is operated by Southwest Airlines. Across 260 flights monitored in recent months, 75% arrived on time (within 15 min of schedule), with an average delay of 12 minutes. The cancellation rate is 0.38%. FlightGuard's average computed risk is 22.3/100 (medium), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At San Diego the average ATFM delay is 5.5 minutes (main cause: atfm). Departing from St. Louis the average ATFM delay is 5.5 minutes.
Heading to San Diego: what to expect in this direction
Flying from St. Louis (STL) to San Diego (SAN) heads west for about 2,501 km, a flight time of roughly 3h 43m.
Departures from St. Louis on this leg cluster in the overnight window: about 67% of STL-SAN flights take off then.
Air-traffic congestion: departing St. Louis the average ATFM delay is 5.5 min (atfm); arriving into San Diego it is 5.5 min (atfm).
Across 260 tracked STL-SAN flights, 75% left on time with an average delay of 12 min and a 0.4% 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) | 75% | 5 min | 0.3% |
Airlines operating STL-SAN
Airports
Frequently asked questions about STL-SAN
The flight from St. Louis (STL) to San Diego (SAN) takes 3h 43m on average. That is the median time recorded across 1 scheduled flight on this leg; the actual time varies by a few minutes with wind, routing and take-off queues.
On the St. Louis (STL) -> San Diego (SAN) route, on-time performance is 75% with an average delay of 12 minutes, based on 260 tracked flights.
The cancellation rate on St. Louis-San Diego is 0.38% across 260 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 San Diego, 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.
