WN4535Southwest Airlines · MDW → BOS
live · 28m ago
Route confirmed Southwest Airlines

WN4535 ChicagoMDW BostonBOS

WN4535 by Southwest Airlines flies from Chicago (MDW) to Boston (BOS).

Right nowNext departure tomorrow Operates daily
10:10

scheduled from MDW

The route today

live boards
MDWChicagoHigh riskMDW delay board →
BOSBostonOn-time likelyBOS delay board →
MDW→BOSevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
38%Chance of 15+ min delay
2.3%Chance of cancellation
+5 minTypical airport delay in this weather

Conditions at MDW and BOS 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 MDW

Forecast

Sat 14 Nov, local date

High8°Clikely 7°C to 8°C
Low1°Clikely −1°C to 2°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 BOS

Forecast

Sun 15 Nov, local date

High10°Clikely 8°C to 11°C
Low3°Clikely 2°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 Chicago to Boston flights today

same route · Southwest Airlines
WN4113departs 07:50
WN2900departs 13:00
WN1902departs 16:05
WN3983departs 17:25
WN2902departs 18:45
WN4379departs 19:15

If WN4535 is cancelled, these are the other Southwest Airlines nonstop flights from Chicago to Boston on the same day, with scheduled departure times in MDW 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 WN4535 actually runs

Pro Flight Search has tracked every published board update for WN4535 across the MDW and BOS boards: schedule changes, gate pushes and actual clocks. Combined risk score: 44.5/100. Based on airport operations, weather, and cached board history at MDW and BOS.

The verdict above is that record speaking, so it reflects how WN4535 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Planning around WN4535? 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: WN4535 Chicago to Boston on-time performance, measured from the MDW and BOS airport boards.

Canonical URL
https://proflightsearch.com/flight/WN4535
How we measure this →