WN3813Southwest Airlines · STL → BWI
live · 2h ago
Route confirmed Southwest Airlines

WN3813 St LouisSTL · 13:40 BaltimoreBWI · 16:40

WN3813 by Southwest Airlines flies from St Louis (STL) to Baltimore (BWI).

Right nowNext departure today Operates daily
13:40

scheduled from STL

⚖ WN3813 typically leaves +12 and lands −10. The air wins minutes back.
Typical gate push+12 minmedian posted departure
Typical arrival−10 minmedian over 8 operations
Wins back in air~22 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
09-09
+0 gate · −16 arrival
09-08
+12 gate · −10 arrival
09-06
+47 gate · +24 arrival
09-05
+19 gate · −8 arrival
09-02
+9 gate · −13 arrival
09-01
+7 gate · −11 arrival
08-30
+26 gate · +3 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 −10 min · 0 cancelled · 8 operations tracked

The route today

live boards
STLSt LouisOn-time likelySTL delay board →
BWIBaltimoreOn-time likelyBWI delay board →
STL→BWIevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
41%Chance of 15+ min delay
1.1%Chance of cancellation
+9 minAvg hub delay right now

Conditions at STL and BWI are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, 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 →

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 Baltimore flights today

same route · Southwest Airlines
WN3811departs 05:55
WN3812departs 08:00
WN332departs 16:15
WN1254departs 16:30
WN5059departs 18:45
WN3814departs 18:50

If WN3813 is cancelled, these are the other Southwest Airlines nonstop flights from St Louis to Baltimore on the same day, with scheduled departure times in STL local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →

How WN3813 actually runs

Pro Flight Search has tracked every published board update for WN3813 across the STL and BWI boards: schedule changes, gate pushes and actual clocks. Usually lands ~7 min early. Based on 8 confirmed landings · 7/8 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 WN3813 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
09-09STL 13:40 (+0)BWI 16:40 16:24 (−16)
09-08STL 13:40 13:52 (+12)BWI 16:40 16:30 (−10)
09-06STL 12:25 13:12 (+47)BWI 15:25 15:49 (+24)
09-05STL 14:55 15:14 (+19)BWI 18:00 17:52 (−8)
09-02STL 13:40 13:49 (+9)BWI 16:40 16:27 (−13)
09-01STL 13:40 13:47 (+7)BWI 16:40 16:29 (−11)
08-30STL 16:25 16:51 (+26)BWI 19:25 19:28 (+3)
08-29STL 14:55 15:01 (+6)BWI 17:55 17:33 (−22)

Aircraft

Recent tails: N8327A, N8746Q, N8926Q, N9013M.

Board clocks recorded as STL and BWI published them.

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 — WN3813 St Louis to Baltimore on-time performance, measured from the STL and BWI airport boards.

Canonical URL
https://proflightsearch.com/flight/WN3813
How we measure this →