WN4090Southwest Airlines · LGA → STL
updated 1h ago
Route confirmed Southwest Airlines

WN4090 New YorkLGA St LouisSTL

WN4090 by Southwest Airlines flies from New York (LGA) to St Louis (STL).

Right nowNext departure today Operates daily
06:10

scheduled from LGA

The route today

live boards
LGANew YorkOn-time likelyLGA delay board →
STLSt LouisOn-time likelySTL delay board →
LGA→STLevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
37%Chance of 15+ min delay
1.9%Chance of cancellation
+7 minTypical airport delay in this weather

Conditions at LGA and STL 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 LGA

Forecast

Fri 13 Nov, local date

High9°Clikely 7°C to 11°C
Low7°Clikely 5°C to 9°C
  • 91% 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 STL

Forecast

Fri 13 Nov, local date

High7°Clikely 3°C to 10°C
Low3°Clikely 1°C to 5°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 New York to St Louis flights today

same route · Southwest Airlines
WN2651departs 07:15
WN3817departs 12:00
WN2363departs 12:30
WN1555departs 14:15
WN2583departs 16:25
WN2584departs 18:35

If WN4090 is cancelled, these are the other Southwest Airlines nonstop flights from New York to St Louis on the same day, with scheduled departure times in LGA 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 WN4090 actually runs

Pro Flight Search has tracked every published board update for WN4090 across the LGA and STL boards: schedule changes, gate pushes and actual clocks. Combined risk score: 33.0/100. Based on airport operations, weather, and cached board history at LGA and STL.

The verdict above is that record speaking, so it reflects how WN4090 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Planning around WN4090? 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: WN4090 New York to St Louis on-time performance, measured from the LGA and STL airport boards.

Canonical URL
https://proflightsearch.com/flight/WN4090
How we measure this →