Direct (nonstop) flights from Saint Louis to Jacksonville
1 airline flys nonstop from Saint Louis Airport (STL) to Jacksonville International (JAX). It's 754 miles (1,213 km), about 2h in the air. Operated by Southwest Airlines.
Southwest Airlines
Route data last updated: May 27, 2026
Airlines with non-stop flights
WN
Southwest Airlines
Alternative Routes
Other ways to fly from Saint Louis to Jacksonville with one stop · direct emits 139 kg CO₂ per passenger
Looking for the return flight?
JAX → STL: Flights from Jacksonville to Saint LouisOther direct flights from Saint Louis
Direct flights from Jacksonville (JAX)
Frequently Asked Questions
How long is the direct flight from Saint Louis to Jacksonville?
A nonstop flight from Saint Louis (STL) to Jacksonville (JAX) takes approximately 2 hours. The distance is 754 miles (1,213 km).
Which airlines fly nonstop from Saint Louis to Jacksonville?
Just Southwest Airlines.
Is there a nonstop flight from Saint Louis to Jacksonville?
Yes. 1 airline: Southwest Airlines.
How far is Saint Louis from Jacksonville?
The flight distance from Saint Louis to Jacksonville is 754 miles (1,213 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as the length of Italy.
What type of aircraft flies from Saint Louis to Jacksonville?
At 2h, this route typically uses narrow-body aircraft — Boeing 737 or Airbus A320. Varies by airline.
What is the carbon footprint of a flight from Saint Louis to Jacksonville?
Roughly 139 kg CO2 per passenger one-way. That's about the same as driving 695 km.
Is the return flight from Jacksonville to Saint Louis also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Saint Louis to Jacksonville?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at Saint Louis Airport for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.