Southwest Airlines
WN340St. Louis to Jacksonville
Southwest Airlines flight WN340 flies from St. Louis (STL) to Jacksonville (JAX), 1,213 km. Over August 2025 to November 2025 it usually arrives right on schedule: 87% of 95 flights arrived within 15 minutes of schedule and 0% were cancelled (US Department of Transportation data).
On-time record, last 12 months
87%
on time (within 15 min)
5%
more than 30 min late
0%
cancelled
-1 min
average arrival vs schedule
Every operation of WN340, August 2025 to November 2025: 95 flights. Source: US Bureau of Transportation Statistics, public domain.
Routes flown as WN340
- St. Louis (STL) to Jacksonville (JAX)57 flights
- Chicago Midway (MDW) to Minneapolis (MSP)19 flights
- Baltimore (BWI) to Chicago Midway (MDW)9 flights
- Chicago Midway (MDW) to New Orleans (MSY)4 flights
- Memphis (MEM) to Las Vegas (LAS)2 flights
- Atlanta (ATL) to Dallas Love Field (DAL)2 flights
- Louisville (SDF) to Las Vegas (LAS)1 flights
- Las Vegas (LAS) to Fresno Yosemite (FAT)1 flights
Other flights from St. Louis to Jacksonville
More about St. Louis (STL) and Jacksonville (JAX).
Embed this on your site
A live badge for travel blogs, forums and trip reports. It updates as new data comes in, and links back here for the full stats.
Dark badge, HTML
<a href="https://tripstow.com/flights/wn340" title="WN340 is on time 87% of the time on TripStow"><img src="https://tripstow.com/badge/flights/wn340.svg" alt="WN340 is on time 87% of the time" width="360" height="88" loading="lazy"></a>
Light badge, HTML
<a href="https://tripstow.com/flights/wn340" title="WN340 is on time 87% of the time on TripStow"><img src="https://tripstow.com/badge/flights/wn340.svg?theme=light" alt="WN340 is on time 87% of the time" width="360" height="88" loading="lazy"></a>Markdown, for forums and README files
[](https://tripstow.com/flights/wn340)Flying soon?
Forward your booking to TripStow and get your trip built for you, with check-in reminders, punctuality for every flight and a map of everywhere you have been.
Start free