STL → JAXSt Louis to Jacksonville

live

Direct flights from St Louis (STL) to Jacksonville (JAX): 7 nonstop departures observed each week across 1 airline. 67% of the last 9 operated flights arrived within 15 minutes of schedule. The median arrival is 9 minutes early. No cancellations were recorded across the 9 tracked flights. The nonstop covers 1,213 km, an estimated 2 hours 3 minutes in the air. Measured by Pro Flight Search from live flight boards at St Louis and Jacksonville. Updated 9 October 2026 at 03:18 UTC.

STL St Louis busy · +18
JAX Jacksonville smooth · +0
1,213 km · ~2h 03m est.
dep bank 10:20–19:557x weekly
Runs mixed · 1 airline · 7x weekly · nonstop
67% on time

of the last 9 operated STL → JAX flights arrived within 15 minutes

Median arrival delay is −9 min. 0 of 9 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−9 minacross the last 9 operated legs
Flight time~2h 03mestimated from route distance
Weekly departures7x1 direct airline on the leg

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Southwest Airlines

Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.

Who flies it

observed on the boards · 7 days
Southwest AirlinesWN67% on time

Flights WN2812 10:20 Tu We · WN4973 19:55 Mo Th Fr Sa Su

History

operated legs · board outcomes
10-08WN4973dep +26 → arr−1
10-07WN2812dep +2 → arr−19
10-06WN2812dep +2 → arr−23
10-05WN4973dep +55 → arr+30
10-04WN3427dep +10 → arr−13
10-04WN4973dep +13 → arr−9
10-03WN4301dep +1 → arr−24
10-03WN4973dep +13 → arr+16
10-02WN4973dep +94 → arr+73

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
STLSt Louis +18 min busy 🌤 clear · N 0 kt Full STL delay board →
JAXJacksonville +0 min smooth ⛅ overcast · N 4 kt Full JAX delay board →

Weather lens

Current conditions put the pressure at STL: 40% odds of a 15+ minute delay and around +9 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the St Louis to Jacksonville route actually runs

Pro Flight Search records official board updates for nonstop STL to JAX flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.

Planning around a delay? Live airport delays · Weather delay risk map · 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 — St Louis (STL) to Jacksonville (JAX) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/STL-JAX
How we measure this →

STL to JAX questions

Is STL–JAX running on time right now?

Smooth skies ahead. The departure side at STL is the weaker end, route health score 88/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on STL–JAX?

Operators schedule morning departures around 10:20 and evening departures around 19:55 from STL. Earlier flights typically land before destination-airport delays accumulate later in the day; check the JAX delay card to confirm conditions when you'd arrive.

How long is the flight from STL to JAX?

Great-circle distance is 1,213 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 116–134 min gate-to-gate on this route.

How often does STL–JAX fly?

Southwest Airlines runs the route with about 7 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.