WN4370Southwest Airlines · MDW → SLC
updated 2h ago
Route confirmed Southwest Airlines

WN4370 ChicagoMDW · 09:55 Salt Lake CitySLC · 12:25

WN4370 by Southwest Airlines flies from Chicago (MDW) to Salt Lake City (SLC).

Right nowNext departure today Operates daily
22:20

scheduled from MDW

⚖ WN4370 typically leaves +4 and lands −8. The air wins minutes back.
Typical gate push+4 minmedian posted departure
Typical arrival−8 minmedian over 8 operations
Wins back in air~12 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 7 operations · gate push → arrival
0+30+60+90 min
11-02
+4 gate · −11 arrival
10-30
+18 gate · −6 arrival
10-29
+3 gate · −1 arrival
10-28
−2 gate · −4 arrival
10-27
−7 gate · −33 arrival
10-26
+4 gate · −11 arrival
10-25
−2 gate · −13 arrival

The bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.

The last 30 days

arrival outcome per operation

median arrival −8 min · 0 cancelled · 8 operations tracked

The route today

live boards
MDWChicagoHigh riskMDW delay board →
SLCSalt Lake CityOn-time likelySLC delay board →
MDW→SLCevery 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
+9 minTypical airport delay in this weather

Driven mainly by SLC (Salt Lake City), 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 Chicago

Forecast

Tue 3 Nov, local date

High22°Clikely 20°C to 24°C
Low17°Clikely 14°C to 19°C
  • 73% 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 Salt Lake City

Forecast

Tue 3 Nov, local date

High12°Clikely 10°C to 14°C
Low2°Clikely 1°C to 4°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 Salt Lake City flights today

same route · Southwest Airlines
WN2986departs 10:10
WN3068departs 10:40
WN4435departs 20:50
WN2043departs 21:20
WN3009departs 21:35

If WN4370 is cancelled, these are the other Southwest Airlines nonstop flights from Chicago to Salt Lake City 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 WN4370 actually runs

Pro Flight Search has tracked every published board update for WN4370 across the MDW and SLC boards: schedule changes, gate pushes and actual clocks. Usually lands ~5 min early. Based on 7 confirmed landings · 7/7 within 15 min of schedule.

The verdict above is that record speaking, so it reflects how WN4370 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
11-02MDW 09:55 09:59 (+4)SLC 12:25 12:14 (−11)
10-30MDW 09:55 10:13 (+18)SLC 12:25 12:19 (−6)
10-29MDW 09:55 09:58 (+3)SLC 12:25 12:24 (−1)
10-28MDW 10:00 09:58 (−2)SLC 12:30 12:26 (−4)
10-27MDW 10:00 09:53 (−7)SLC 12:30 11:57 (−33)
10-26MDW 09:55 09:59 (+4)SLC 12:25 12:14 (−11)
10-25MDW 09:55 09:53 (−2)SLC 12:25 12:12 (−13)
10-23MDW 09:55 10:24 (+29)SLC 12:25 12:20 (−5)

Aircraft

Recent tails: N8985Q, N8540V, N294WN, N953WN.

Board clocks recorded as MDW and SLC published them.

Planning around WN4370? 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: WN4370 Chicago to Salt Lake City on-time performance, measured from the MDW and SLC airport boards.

Canonical URL
https://proflightsearch.com/flight/WN4370
How we measure this →