Flights Las Vegas → St. Louis
LAS → STL
Route overview
The flight route from Las Vegas to St. Louis operates with a high volume of flights, totaling 521 annually, and serves one of the busiest airports by passenger traffic, which sees approximately 13,665,517 passengers per year at its destination. With an on-time performance rate of 74%, the route experiences an average delay of 12.3 minutes when flights are not on schedule.
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 Las Vegas (LAS) → St. Louis (STL) route is operated by Southwest Airlines. Across 669 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 1.05%. FlightGuard's average computed risk is 22/100 (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 Las Vegas the average ATFM delay is 2.0 minutes.
Heading to St. Louis: what to expect in this direction
Flying from Las Vegas (LAS) to St. Louis (STL) heads east for about 2,202 km, a flight time of roughly 3h 10m.
Departures from Las Vegas on this leg cluster in the overnight window: about 47% of LAS-STL flights take off then.
Air-traffic congestion: departing Las Vegas the average ATFM delay is 2.0 min (atfm); arriving into St. Louis it is 2.0 min (atfm).
Across 669 tracked LAS-STL flights, 75% left on time with an average delay of 12 min and a 1.1% 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 LAS-STL
Airports
Frequently asked questions about LAS-STL
On the Las Vegas (LAS) -> St. Louis (STL) route, on-time performance is 75% with an average delay of 12 minutes, based on 669 tracked flights.
The cancellation rate on Las Vegas-St. Louis is 1.05% across 669 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.
