WN4124Southwest Airlines · STL → LAS
live · 31m ago
Route confirmed Southwest Airlines

WN4124 St LouisSTL · 07:50 Las VegasLAS · 09:25

WN4124 by Southwest Airlines flies from St Louis (STL) to Las Vegas (LAS).

Right nowNext departure today Operates daily
06:35

scheduled from STL

Typical gate push+9 minmedian posted departure
Typical arrival−13 minmedian over 4 operations
Wins back in air~22 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 4 operations · gate push → arrival
0+30+60+90 min
11-05
+9 gate · −19 arrival
10-30
+14 gate · −8 arrival
10-29
+9 gate · −19 arrival
10-26
−2 arrival

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

The route today

live boards
STLSt LouisOn-time likelySTL delay board →
LASLas VegasOn-time likelyLAS delay board →
STL→LASevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
42%Chance of 15+ min delay
0.8%Chance of cancellation
+8 minTypical airport delay in this weather

Conditions at STL and LAS are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. 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

Fri 6 Nov, local date

High11°Clikely 10°C to 14°C
Low7°Clikely 5°C to 10°C

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 Las Vegas

Forecast

Thu 5 Nov, local date

High21°Clikely 20°C to 22°C
Low11°Clikely 10°C to 12°C

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 Las Vegas flights today

same route · Southwest Airlines
WN2707departs 05:05
WN4156departs 05:05
WN4078departs 05:20
WN143departs 06:25
WN3723departs 07:20
WN2708departs 08:00

If WN4124 is cancelled, these are the other Southwest Airlines nonstop flights from St Louis to Las Vegas 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 WN4124 actually runs

Pro Flight Search has tracked every published board update for WN4124 across the STL and LAS boards: schedule changes, gate pushes and actual clocks. Early read: no clear pattern yet. Only 1 completed leg so far: left a little late (~9 min) but landed right on schedule. Not enough to call it.

The verdict above is that record speaking, so it reflects how WN4124 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
11-05STL 07:50 07:59 (+9)LAS 09:25 09:06 (−19)
10-30STL 07:50 08:04 (+14)LAS 09:25 09:17 (−8)
10-29STL 07:50 07:59 (+9)LAS 09:25 09:06 (−19)
10-26STL LAS 09:25 09:23 (−2)

Aircraft

Recent tails: N8949Q, N8706W.

Board clocks recorded as STL and LAS published them.

Planning around WN4124? 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: WN4124 St Louis to Las Vegas on-time performance, measured from the STL and LAS airport boards.

Canonical URL
https://proflightsearch.com/flight/WN4124
How we measure this →