Flights St. Louis → Baltimore
STL → BWI
Route overview
The flight route from St. Louis to Baltimore operates with a Boeing 737-300 aircraft and has an on-time performance rate of 76%, with an average delay of 12.2 minutes per flight. Over the past year, this route has seen 288 flights, serving the busy destination airport in Baltimore that opened in 1947 and currently handles approximately 22,804,744 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) → Baltimore (BWI) route is operated by Southwest Airlines. Across 373 flights monitored in recent months, 80% arrived on time (within 15 min of schedule), with an average delay of 10 minutes. The cancellation rate is 3.49%. FlightGuard's average computed risk is 22.4/100 (medium), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At Baltimore 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 Baltimore: what to expect in this direction
Flying from St. Louis (STL) to Baltimore (BWI) heads east for about 1,184 km, a flight time of roughly 1h 54m.
Departures from St. Louis on this leg cluster in the morning window: about 36% of STL-BWI flights take off then.
Air-traffic congestion: departing St. Louis the average ATFM delay is 2.0 min (atfm); arriving into Baltimore it is 2.0 min (atfm).
Across 373 tracked STL-BWI flights, 80% left on time with an average delay of 10 min and a 3.5% 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 STL-BWI
Airports
Frequently asked questions about STL-BWI
On the St. Louis (STL) -> Baltimore (BWI) route, on-time performance is 80% with an average delay of 10 minutes, based on 373 tracked flights.
The cancellation rate on St. Louis-Baltimore is 3.49% across 373 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 Baltimore, 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.
