WN255Southwest Airlines · ATL → STL
updated 3h ago
Route confirmed Southwest Airlines

WN255 AtlantaATL · 07:05 St LouisSTL · 07:45

WN255 by Southwest Airlines flies from Atlanta (ATL) to St Louis (STL).

Right nowNext departure today Operates daily
20:10

scheduled from ATL

⚖ WN255 typically leaves +10 and lands −13. The air wins minutes back.
Typical gate push+10 minmedian posted departure
Typical arrival−13 minmedian over 8 operations
Wins back in air~23 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 7 operations · gate push → arrival
0+45+89+134 min
11-02
+8 gate · −23 arrival
10-30
+8 gate · −13 arrival
10-29
+134 gate · +112 arrival
10-26
+8 gate · −23 arrival
10-25
+15 gate · −7 arrival
10-23
+62 gate · +37 arrival
10-22
+11 gate · −18 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 −13 min · 0 cancelled · 8 operations tracked

The route today

live boards
ATLAtlantaOn-time likelyATL delay board →
STLSt LouisOn-time likelySTL delay board →
ATL→STLevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
38%Chance of 15+ min delay
0.4%Chance of cancellation
+12 minTypical airport delay in this weather

Driven mainly by STL (St Louis), 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 at ATL

Forecast

Tue 3 Nov, local date

High22°Clikely 19°C to 24°C
Low16°Clikely 14°C to 17°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 STL

Forecast

Tue 3 Nov, local date

High22°Clikely 19°C to 24°C
Low19°Clikely 14°C to 22°C
  • 60% chance of thunder
  • 97% 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 Atlanta to St Louis flights today

same route · Southwest Airlines
WN277departs 06:45
WN4625departs 07:00
WN710departs 10:00
WN3354departs 13:05
WN736departs 13:25
WN868departs 14:20

If WN255 is cancelled, these are the other Southwest Airlines nonstop flights from Atlanta to St Louis on the same day, with scheduled departure times in ATL 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 WN255 actually runs

Pro Flight Search has tracked every published board update for WN255 across the ATL and STL boards: schedule changes, gate pushes and actual clocks. Usually lands ~10 min early. Based on 8 confirmed landings · 6/8 within 15 min of schedule. Pushes back late but makes up time in the air.

The verdict above is that record speaking, so it reflects how WN255 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
11-02ATL 07:05 07:13 (+8)STL 07:45 07:22 (−23)
10-30ATL 07:05 07:13 (+8)STL 07:45 07:32 (−13)
10-29ATL 07:05 09:19 (+134)STL 07:45 09:37 (+112)
10-26ATL 07:05 07:13 (+8)STL 07:45 07:22 (−23)
10-25ATL 07:00 07:15 (+15)STL 07:40 07:33 (−7)
10-23ATL 07:05 08:07 (+62)STL 07:45 08:22 (+37)
10-22ATL 07:05 07:16 (+11)STL 07:45 07:27 (−18)
10-19ATL 07:05 07:14 (+9)STL 07:45 07:31 (−14)

Aircraft

Recent tails: N243WN, N963WN, N950WN, N7889A.

Board clocks recorded as ATL and STL published them.

Planning around WN255? 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: WN255 Atlanta to St Louis on-time performance, measured from the ATL and STL airport boards.

Canonical URL
https://proflightsearch.com/flight/WN255
How we measure this →