WN999 Flight Status Southwest Airlines: Boston to St. Louis (SWA999)
Are you looking for the November 3rd, 2026 WN 999 Portland to Denver flight? Go to our WN999 Portland to Denver Flight Status page >
WN 999 Boston to St. Louis Flight Status
Not scheduled today (November 3rd, 2026). Latest flight: September 30th, 2026 ; recent history is in the table below.
WN 999 Flight Status & Schedule Southwest Airlines Boston to St. Louis
| Date | From | To | Departure | Arrival | Status | Details |
|---|---|---|---|---|---|---|
| Sep 30 | BOS | STL | 18:30 | 19:52 | Landed | Track > |
| Sep 29 | BOS | STL | 18:34 | 19:56 | Landed | Track > |
| Sep 26 | BOS | STL | 05:39 | 07:00 | Landed | Track > |
| Sep 23 | BOS | STL | 20:40 | 22:09 | Delayed | Track > |
| Sep 22 | BOS | STL | 19:38 | 21:16 | Delayed | Track > |
| Sep 19 | BOS | STL | 05:33 | 07:00 | Landed | Track > |
| Sep 16 | BOS | STL | 18:54 | 20:23 | Landed Late | Track > |
| Sep 15 | BOS | STL | 19:22 | 20:43 | Delayed | Track > |
| Sep 12 | BOS | STL | 05:49 | 07:26 | Landed | Track > |
| Sep 09 | BOS | STL | 18:39 | 20:06 | Landed Late | Track > |
Southwest Airlines flight WN 999 links Boston and St. Louis, 1,680 km (1,044 mi) apart. With 3 hours in the timetable and a usual flight time of about 2 h 25 min, it often makes up time. It is not flying today; the last flight, on 30 September 2026, landed on time.
About WN 999
- Distance
- 1,680 km (1,044 mi)
- Typical flight time
- 2 h 25 min
- On time
- 5 of the last 7
- Average delay when late
- 30 min
- Usually departs from
- Terminal B
WN 999 FAQ
- How long is the WN999 flight?
- The timetable allows 3 hours. Boston to St. Louis is 1,680 km (1,044 mi).
- How often is WN999 late?
- 2 of the last 7 flights arrived 15 or more minutes late; when late, by 30 minutes on average.
- Which terminal does WN999 use?
- It usually leaves from Terminal B at Boston Logan International Airport (BOS) and arrives at Terminal 2 at St. Louis Lambert International Airport (STL). Check the flight card above for today's terminal and gate.
- What other flight numbers does WN999 have?
- Also listed as SWA999 (Southwest Airlines' ICAO code) and WN 999.
WN999 and Boston BOS to St. Louis STL Flights
Other flights departing from Boston BOS: AA1421, AA2837, WN1257
Other flights arriving at St. Louis STL: WN1740, WN3393, WN1656, JL88
All flights connecting Boston BOS to St. Louis STL.