Flights St. Louis → Boston
STL → BOS
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) → Boston (BOS) route is operated by Southwest Airlines. Across 350 flights monitored in recent months, 70% arrived on time (within 15 min of schedule), with an average delay of 17 minutes. The cancellation rate is 2.57%. FlightGuard's average computed risk is 10.2/100 (low), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At Boston the average ATFM delay is 2.0 minutes (main cause: atfm). Departing from St. Louis the average ATFM delay is 2.0 minutes.
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| Southwest Airlines (WN) | 73% | 5 min | 0.9% |
Airlines operating STL-BOS
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Frequently asked questions about STL-BOS
On the St. Louis (STL) -> Boston (BOS) route, on-time performance is 70% with an average delay of 17 minutes, based on 350 tracked flights.
The cancellation rate on St. Louis-Boston is 2.57% across 350 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 Boston, 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.
