WN4809Southwest Airlines · SDF → BWI
live · 2h ago
Route confirmed Southwest Airlines

WN4809 LouisvilleSDF · 05:35 BaltimoreBWI · 07:05

WN4809 by Southwest Airlines flies from Louisville (SDF) to Baltimore (BWI).

Right nowNext departure tomorrow Operates daily
05:35

scheduled from SDF

⚖ WN4809 typically leaves +5 and lands −18. The air wins minutes back.
Typical gate push+5 minmedian posted departure
Typical arrival−18 minmedian over 15 operations
Wins back in air~23 minmedian gate push vs arrival · how planes make up time → Cancellation0 in 15tracked operations · cancellation odds calculator →

Where the minutes go

last 7 operations · gate push → arrival
0+30+60+90 min
10-24
+8 gate · −7 arrival
10-23
+15 gate · +0 arrival
10-22
+4 gate · −18 arrival
10-21
+7 gate · −18 arrival
10-20
+2 gate · −22 arrival
10-19
+3 gate · −16 arrival
10-18
+11 gate · −9 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 −18 min · 0 cancelled · 15 operations tracked

The route today

live boards
SDFLouisvilleOn-time likelySDF delay board →
BWIBaltimoreOn-time likelyBWI delay board →
SDF→BWIevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
40%Chance of 15+ min delay
1.9%Chance of cancellation
+7 minAvg hub delay right now

Conditions at SDF 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 Louisville to Baltimore flights today

same route · Southwest Airlines
WN1120departs 10:30
WN787departs 10:40
WN1910departs 10:55
WN1167departs 11:50
WN5033departs 13:05
WN539departs 15:35

If WN4809 is cancelled, these are the other Southwest Airlines nonstop flights from Louisville to Baltimore on the same day, with scheduled departure times in SDF local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →

How WN4809 actually runs

Pro Flight Search has tracked every published board update for WN4809 across the SDF and BWI boards: schedule changes, gate pushes and actual clocks. Usually lands ~6 min early. Based on 14 confirmed landings · 14/14 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 WN4809 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
10-24SDF 05:35 05:43 (+8)BWI 07:05 06:58 (−7)
10-23SDF 05:35 05:50 (+15)BWI 07:05 (+0)
10-22SDF 05:35 05:39 (+4)BWI 07:05 06:47 (−18)
10-21SDF 05:45 05:52 (+7)BWI 07:20 07:02 (−18)
10-20SDF 05:45 05:47 (+2)BWI 07:20 06:58 (−22)
10-19SDF 05:35 05:38 (+3)BWI 07:05 06:49 (−16)
10-18SDF 05:50 06:01 (+11)BWI 07:25 07:16 (−9)
10-17SDF 05:35 05:48 (+13)BWI 07:05 06:55 (−10)
10-16SDF 05:35 05:42 (+7)BWI 07:05 06:47 (−18)
10-15SDF 05:35 05:36 (+1)BWI 07:05 06:43 (−22)
10-14SDF 05:45 05:44 (−1)BWI 07:20 06:53 (−27)
10-13SDF 05:45 05:44 (−1)BWI 07:20 06:51 (−29)
10-12SDF 05:35 05:40 (+5)BWI 07:05 06:54 (−11)
10-11SDF 05:50 06:04 (+14)BWI 07:25 07:24 (−1)
10-10SDF 05:35 05:37 (+2)BWI 07:05 06:42 (−23)

Aircraft

Recent tails: N910WN, N278WN, N287WN, N8813Q.

Board clocks recorded as SDF and BWI published them.

Planning around WN4809? 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 — WN4809 Louisville to Baltimore on-time performance, measured from the SDF and BWI airport boards.

Canonical URL
https://proflightsearch.com/flight/WN4809
How we measure this →