WN4177Southwest Airlines · STL → CHS
live · 5h ago
Route confirmed Southwest Airlines

WN4177 St LouisSTL · 15:35 CharlestonCHS · 18:35

WN4177 by Southwest Airlines flies from St Louis (STL) to Charleston (CHS) for the Thu, Sep 10 departure.

Right nowLanded in Charleston · today
18:53

arrived at CHS · 18 min late

⚖ WN4177 typically leaves +44 and lands +18. The air wins minutes back.
Typical gate push+44 minmedian posted departure
Typical arrival+18 minmedian over 8 operations
Wins back in air~26 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 7 operations · gate push → arrival
0+30+60+90 min
09-11
+44 gate · +18 arrival
09-10
+44 gate · +18 arrival
09-07
+35 gate · +5 arrival
09-04
+26 gate · −4 arrival
09-03
+38 gate · +15 arrival
08-31
+53 gate · +30 arrival
08-30
+0 gate · −15 arrival

The bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.

The last 30 days

arrival outcome per operation

median arrival +18 min · 0 cancelled · 8 operations tracked

The route today

live boards
STLSt LouisModerate riskSTL delay board →
CHSCharlestonOn-time likelyCHS delay board →
STL→CHSevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
39%Chance of 15+ min delay
1.3%Chance of cancellation
+7 minAvg hub delay right now

Conditions at STL and CHS are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, under conditions like today's, over the last 90 days.

Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other St Louis to Charleston flights today

same route · Southwest Airlines
WN1125departs 13:40

If WN4177 is cancelled, this is the other Southwest Airlines nonstop flight from St Louis to Charleston on the same day, with scheduled departure times in STL local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →

How WN4177 actually runs

Pro Flight Search has tracked every published board update for WN4177 across the STL and CHS boards: schedule changes, gate pushes and actual clocks. Usually lands ~18 min late. Based on 8 confirmed landings · 4/8 within 15 min of schedule. Pushes back late but makes up time in the air.

The verdict above is that record speaking, so it reflects how WN4177 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocksaircraft

Board log

scheduled → actual, per operation
09-11STL 15:35 16:19 (+44)CHS 18:35 18:53 (+18)
09-10STL 15:35 16:19 (+44)CHS 18:35 18:53 (+18)
09-07STL 15:35 16:10 (+35)CHS 18:35 18:40 (+5)
09-04STL 15:35 16:01 (+26)CHS 18:35 18:31 (−4)
09-03STL 15:35 16:13 (+38)CHS 18:35 18:50 (+15)
08-31STL 15:35 16:28 (+53)CHS 18:35 19:05 (+30)
08-30STL 11:15 (+0)CHS 14:05 13:50 (−15)
08-28STL 15:35 16:25 (+50)CHS 18:35 18:54 (+19)

Aircraft

Recent tails: N8647A, N8982S, N8686A, N8672F.

Board clocks recorded as STL and CHS published them.

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — WN4177 St Louis to Charleston on-time performance, measured from the STL and CHS airport boards.

Canonical URL
https://proflightsearch.com/flight/WN4177
How we measure this →