WN4078Southwest Airlines · STL → LAS
live · 17m ago
Route confirmed Southwest Airlines

WN4078 St LouisSTL · 05:30 Las VegasLAS · 07:05

WN4078 by Southwest Airlines flies from St Louis (STL) to Las Vegas (LAS).

Right nowNext departure tomorrow Operates daily
05:20

scheduled from STL

Wins back in air~24 minmedian gate push vs arrival · how planes make up time →

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

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
44%Chance of 15+ min delay
0.3%Chance of cancellation
+10 minTypical airport delay in this weather

Driven mainly by STL (St Louis), currently flying MVFR (marginal visual). 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 Las Vegas

Forecast

Tue 3 Nov, local date

High20°Clikely 19°C to 21°C
Low12°Clikely 11°C to 13°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 05:40
WN3723departs 07:20
WN4124departs 07:50
WN2708departs 08:00
WN120departs 08:25

If WN4078 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 WN4078 actually runs

Pro Flight Search has tracked every published board update for WN4078 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: landed +4 min. Not enough to call it.

The verdict above is that record speaking, so it reflects how WN4078 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
10-30STL 05:30 05:56 (+26)LAS 07:05 07:09 (+4)
10-29STL 05:30 05:37 (+7)LAS 07:05 06:46 (−19)

Aircraft

Recent tails: N9024K, N8527Q.

Board clocks recorded as STL and LAS published them.

Planning around WN4078? 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: WN4078 St Louis to Las Vegas on-time performance, measured from the STL and LAS airport boards.

Canonical URL
https://proflightsearch.com/flight/WN4078
How we measure this →