WN337Southwest Airlines · SAT → MDW
live · 7m ago
Route confirmed Southwest Airlines

WN337 San AntonioSAT ChicagoMDW

WN337 by Southwest Airlines flies from San Antonio (SAT) to Chicago (MDW).

Right nowNext departure today Operates daily
09:50

scheduled from SAT

The route today

live boards
SATSan AntonioOn-time likelySAT delay board →
MDWChicagoOn-time likelyMDW delay board →
SAT→MDWevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
39%Chance of 15+ min delay
2.2%Chance of cancellation
+8 minTypical airport delay in this weather

Driven mainly by SAT (San Antonio), 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 on this route

Forecast

San Antonio to Chicago with Southwest Airlines · Fri 30 Oct, local date

Outlook: elevated
Chance a departure leaves 60+ min late
11%1.5× usual

Forecast weather: 88% chance of rain at San Antonio

No cancellation outlook here: this airport's board does not publish cancellations reliably.

Forecast: WeatherTomorrow · incl. data from ECMWF (CC BY 4.0, modified) · Fewer than one departure a day on this route with this airline, so read it as a rough guide. · 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 San Antonio to Chicago flights today

same route · Southwest Airlines
WN2456departs 00:00
WN2311departs 03:55
WN3724departs 04:20
WN1686departs 05:05
WN4109departs 09:25
WN3725departs 09:35

If WN337 is cancelled, these are the other Southwest Airlines nonstop flights from San Antonio to Chicago on the same day, with scheduled departure times in SAT 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 WN337 actually runs

Pro Flight Search has tracked every published board update for WN337 across the SAT and MDW boards: schedule changes, gate pushes and actual clocks. Combined risk score: 50.0/100. Based on airport operations, weather, and cached board history at SAT and MDW.

The verdict above is that record speaking, so it reflects how WN337 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Planning around WN337? 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: WN337 San Antonio to Chicago on-time performance, measured from the SAT and MDW airport boards.

Canonical URL
https://proflightsearch.com/flight/WN337
How we measure this →