Flights St. Louis → Salt Lake City
STL → SLC
Route overview
The flight route from St. Louis to Salt Lake City operates with an 85% on-time performance rate, with an average delay of 17.9 minutes when flights are not on time. This busy route sees a total of 238 flights and uses Airbus A320 aircraft, serving the highly trafficked destination airport which handles over 25 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) → Salt Lake City (SLC) route is operated by Delta Air Lines. Across 307 flights monitored in recent months, 86% arrived on time (within 15 min of schedule), with an average delay of 16 minutes. The cancellation rate is 0.98%. FlightGuard's average computed risk is 17.2/100 (medium), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At Salt Lake City 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 Salt Lake City: what to expect in this direction
Flying from St. Louis (STL) to Salt Lake City (SLC) heads west for about 1,856 km, a flight time of roughly 2h 44m.
Departures from St. Louis on this leg cluster in the overnight window: about 39% of STL-SLC flights take off then.
Air-traffic congestion: departing St. Louis the average ATFM delay is 2.0 min (atfm); arriving into Salt Lake City it is 2.0 min (atfm).
Across 307 tracked STL-SLC flights, 86% left on time with an average delay of 16 min and a 1.0% cancellation rate.
Route facts
Flights on this route
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| Delta Air Lines (DL) | 80% | 8 min | 1.8% |
Airlines operating STL-SLC
Airports
Frequently asked questions about STL-SLC
On the St. Louis (STL) -> Salt Lake City (SLC) route, on-time performance is 86% with an average delay of 16 minutes, based on 307 tracked flights.
The cancellation rate on St. Louis-Salt Lake City is 0.98% across 307 monitored flights.
The route is operated by 1 airline: Delta Air Lines.
Enter your flight number on FlightGuard for a real-time analysis based on 9 factors: weather at Salt Lake City, 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.
