| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| May 24 | STL | BOS | 14:40 | 17:43 |
Delayed
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Southwest Airlines Flight WN4578 connects St. Louis, United States to Boston, United States, taking off from St. Louis Lambert International Airport STL and landing at Boston Logan International Airport BOS.
How long is the WN4578 flight from St. Louis to Boston?
The average flight time from St. Louis to Boston is 2 hours and 3 minutes. The flight distance is 1680 km / 1044 miles and the average flight speed is 820 km/h / 509 mph.
What is the On-Time Performance (OTP) of Southwest Airlines Flight WN4578 St. Louis to Boston?
The Airportia On-Time Performance Rating for Southwest Airlines Flight WN4578 is 3.8/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight WN4578 arriving at?
Flight WN4578 arrives at Boston Logan International Airport (BOS) Terminal B.
When was the latest WN4578 flight?
The latest flight took off on Sunday, May 24th, 2026 with the flight status being En-Route on 17:43.
How else can the flight WN4578 be referenced as?
This Southwest Airlines flight can also be referenced as SWA4578, WN 4578, SWA 4578.
How often is flight WN4578 delayed?
On average, 100% of all WN4578 flights are delayed. The average delay is 73 minutes.
Can I get compensation for my delayed or cancelled WN4578 flight or baggage issues?
If your WN4578 flight was cancelled, delayed, or if you experienced baggage issues such as delayed, damaged, or lost bags, you may be entitled to compensation. Compensation amounts and eligibility depend on various regulations, including EC 261/2004, UK261, CA Montreal Convention, US GoodWill, BR-ANAC, SA-GACA and TK-SHY.
See our WN4578 Flight Tracker above for more details.
Other flights departing from St. Louis STL: AA2717, DL5610, UA4454, WN294
Other flights arriving at Boston BOS: AS330, UA794, B61290, DL5829
All flights connecting St. Louis STL to Boston BOS.