WN4122Southwest Airlines · STL → RSW
live · 58m ago
Route confirmed Southwest Airlines

WN4122 St LouisSTL · 20:25 Fort MyersRSW · 23:55

WN4122 by Southwest Airlines flies from St Louis (STL) to Fort Myers (RSW).

Right nowNext departure today Operates daily
18:50

scheduled from STL

⚖ WN4122 typically leaves +22 and lands −5. The air wins minutes back.
Typical gate push+22 minmedian posted departure
Typical arrival−5 minmedian over 12 operations
Wins back in air~27 minmedian gate push vs arrival · how planes make up time → Cancellation0 in 12tracked operations · cancellation odds calculator →

Where the minutes go

last 7 operations · gate push → arrival
0+30+60+90 min
11-02
+3 gate · −28 arrival
10-30
+30 gate · +4 arrival
10-29
+29 gate · −2 arrival
10-28
+13 gate · −10 arrival
10-27
+40 gate · +19 arrival
10-26
+3 gate · −28 arrival
10-25
+28 gate · −1 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 −5 min · 0 cancelled · 12 operations tracked

The route today

live boards
STLSt LouisOn-time likelySTL delay board →
RSWFort MyersModerate riskRSW delay board →
STL→RSWevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
44%Chance of 15+ min delay
0.4%Chance of cancellation
+12 minTypical airport delay in this weather

Driven mainly by STL (St Louis), currently flying IFR (instrument). These figures come from both airports' records 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 →

Tomorrow at St Louis

Forecast

Tue 3 Nov, local date

High21°Clikely 20°C to 23°C
Low18°Clikely 15°C to 20°C
  • 97% chance of rain

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

Tomorrow at Fort Myers

Forecast

Tue 3 Nov, local date

High29°Clikely 27°C to 30°C
Low22°Clikely 21°C to 23°C
  • 85% chance of rain

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

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 Fort Myers flights today

same route · Southwest Airlines
WN888departs 05:15
WN1110departs 05:55
WN3794departs 06:00
WN3815departs 06:05
WN3573departs 08:00
WN651departs 10:20

If WN4122 is cancelled, these are the other Southwest Airlines nonstop flights from St Louis to Fort Myers on the same day, with scheduled departure times in STL local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →

How WN4122 actually runs

Pro Flight Search has tracked every published board update for WN4122 across the STL and RSW boards: schedule changes, gate pushes and actual clocks. Usually lands ~10 min late. Based on 11 confirmed landings · 10/11 within 15 min of schedule.

The verdict above is that record speaking, so it reflects how WN4122 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
11-02STL 20:25 20:28 (+3)RSW 23:55 23:27 (−28)
10-30STL 20:25 20:55 (+30)RSW 23:55 23:59 (+4)
10-29STL 20:25 20:54 (+29)RSW 23:55 23:53 (−2)
10-28STL 18:50 19:03 (+13)RSW 22:15 22:05 (−10)
10-27STL 18:50 19:30 (+40)RSW 22:15 22:34 (+19)
10-26STL 20:25 20:28 (+3)RSW 23:55 23:27 (−28)
10-25STL 20:30 20:58 (+28)RSW 23:55 23:54 (−1)
10-24STL 17:00 18:36 (+96)RSW 20:30 21:48 (+78)
10-23STL 20:25 20:31 (+6)RSW 23:55 23:33 (−22)
10-22STL 20:25 20:57 (+32)RSW 23:55 23:57 (+2)
10-21STL 18:50 19:01 (+11)RSW 22:15 21:58 (−17)
10-20STL 18:50 19:05 (+15)RSW 22:15 22:06 (−9)

Aircraft

Recent tails: N249WN, N284WN, N8710M, N8626B.

Board clocks recorded as STL and RSW published them.

Planning around WN4122? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

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: WN4122 St Louis to Fort Myers on-time performance, measured from the STL and RSW airport boards.

Canonical URL
https://proflightsearch.com/flight/WN4122
How we measure this →