WN4721Southwest Airlines · STL → CLE
updated 3h ago
Route confirmed Southwest Airlines

WN4721 St LouisSTL ClevelandCLE

WN4721 by Southwest Airlines flies from St Louis (STL) to Cleveland (CLE).

Right nowNext departure today Operates daily
18:45

scheduled from STL

The route today

live boards
STLSt LouisOn-time likelySTL delay board →
CLEClevelandOn-time likelyCLE delay board →
STL→CLEevery 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
0.6%Chance of cancellation
+7 minTypical airport delay in this weather

Conditions at STL and CLE 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 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.

Tomorrow at CLE

Forecast

Fri 13 Nov, local date

High6°Clikely 5°C to 8°C
Low2°Clikely 0°C to 4°C
  • 62% chance of snow
  • 93% 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 Cleveland flights today

same route · Southwest Airlines
WN4958departs 10:15
WN4479departs 10:40
WN3054departs 18:15

If WN4721 is cancelled, these are the other Southwest Airlines nonstop flights from St Louis to Cleveland 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 WN4721 actually runs

Pro Flight Search has tracked every published board update for WN4721 across the STL and CLE boards: schedule changes, gate pushes and actual clocks. Combined risk score: 33.0/100. Based on airport operations, weather, and cached board history at STL and CLE.

The verdict above is that record speaking, so it reflects how WN4721 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Planning around WN4721? 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: WN4721 St Louis to Cleveland on-time performance, measured from the STL and CLE airport boards.

Canonical URL
https://proflightsearch.com/flight/WN4721
How we measure this →