WN851Southwest Airlines · BNA → JAX
live · 4h ago
Route confirmed Southwest Airlines

WN851 NashvilleBNA · 10:50 JacksonvilleJAX · 13:20

WN851 by Southwest Airlines flies from Nashville (BNA) to Jacksonville (JAX) for the Mon, Sep 7 departure.

Right nowLanded in Jacksonville · today
13:17

arrived at JAX · 3 min early

⚖ WN851 typically leaves +21 and lands +0. The air wins minutes back.
Typical gate push+21 minmedian posted departure
Typical arrival+0 minmedian over 8 operations
Wins back in air~21 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 7 operations · gate push → arrival
0+32+65+97 min
09-07
+18 gate · −3 arrival
09-04
+19 gate · −2 arrival
09-03
+20 gate · −1 arrival
08-31
+15 gate · −5 arrival
08-30
+21 gate · +0 arrival
08-28
+97 gate · +81 arrival
08-27
+42 gate · +25 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 +0 min · 0 cancelled · 8 operations tracked

The route today

live boards
BNANashvilleModerate riskBNA delay board →
JAXJacksonvilleOn-time likelyJAX delay board →
BNA→JAXevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Early read, sample still building
44%Chance of 15+ min delay
2.7%Chance of cancellation

Conditions at BNA and JAX 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. This route's tracked sample is still thin — treat these as an early read, not a precise forecast.

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 Nashville to Jacksonville flights today

same route · Southwest Airlines
WN3420departs 10:20
WN4114departs 13:20
WN743departs 13:25
WN1498departs 14:15
WN438departs 15:30
WN539departs 17:10

If WN851 is cancelled, these are the other Southwest Airlines nonstop flights from Nashville to Jacksonville on the same day, with scheduled departure times in BNA local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →

How WN851 actually runs

Pro Flight Search has tracked every published board update for WN851 across the BNA and JAX boards: schedule changes, gate pushes and actual clocks. Usually lands on time. Based on 7 confirmed landings · 5/7 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 WN851 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
09-07BNA 10:50 11:08 (+18)JAX 13:20 13:17 (−3)
09-04BNA 10:50 11:09 (+19)JAX 13:20 13:18 (−2)
09-03BNA 10:50 11:10 (+20)JAX 13:20 13:19 (−1)
08-31BNA 10:50 11:05 (+15)JAX 13:20 13:15 (−5)
08-30BNA 10:50 11:11 (+21)JAX 13:20 (+0)
08-28BNA 10:50 12:27 (+97)JAX 13:20 14:41 (+81)
08-27BNA 10:50 11:32 (+42)JAX 13:20 13:45 (+25)
08-24BNA 10:50 11:24 (+34)JAX 13:20 13:30 (+10)

Aircraft

Recent tails: N8840Q, N8910Q, N8969S, N8711Q.

Board clocks recorded as BNA and JAX 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 — WN851 Nashville to Jacksonville on-time performance, measured from the BNA and JAX airport boards.

Canonical URL
https://proflightsearch.com/flight/WN851
How we measure this →