$47 Find Cheap Flights from St. Louis to Jacksonville - Compare and Save

Among airlines operating St. Louis to Jacksonville flights:

• Southwest: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Only Southwest operates flights between St. Louis and Jacksonville.

Flights from St. Louis to Jacksonville usually depart from Lambert-St Louis (STL) and arrive at Jacksonville (JAX).

Here are some options for this route, based on selected ticket types and cabin classes:

• Southwest: a cabin bag in Economy Class class
• JetBlue: a cabin bag in Economy Class class

Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

Two cabin classes are available on flights from St. Louis to Jacksonville:

• Economy Class
• First Class

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $223 round-trip via Washington, D.C. Reagan-National (DCA), compared to $357 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $45–$90 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Boeing 737 MAX 8 family is used most often on this route, operated mainly by Southwest and JetBlue. Other aircraft seen on the route include Boeing 737-800 Passenger/BBJ2 (winglets) variants.

One-stop flights from St. Louis to Jacksonville most commonly connect through:

• Atlanta Hartsfield-Jackson (ATL) - 68% of one-stop connections
• Charlotte Douglas (CLT) - 18% of one-stop connections
• Chicago O'Hare Intl (ORD) - 5% of one-stop connections
• Nashville Intl (BNA) - 5% of one-stop connections

Atlanta Hartsfield-Jackson (ATL) handles the largest share of one-stop connections on this route.

Yes. Being flexible with your travel dates can save you up to 19% on the St. Louis to Jacksonville route. Friday is the cheapest departure day at $324 round-trip on average, while Saturday is the most expensive at $396, a difference of $72. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Evening is the busiest departure period on St. Louis to Jacksonville flights, with 100% of flights leaving in that window. Morning departures account for 0%, afternoon flights for 0%, and night flights for 0%.

Some of the most popular sights in Jacksonville are St. Johns Town Center, Mayo Clinic- Kinne Auditorium and Downtown Jacksonville Multiple Property Submission. These are among the most viewed places in Jacksonville on KAYAK.

These are the earliest and latest flight times available from St. Louis to Jacksonville:

• Earliest: departs at 8:10 am and lands at 10:09 am
• Latest: departs at 8:50 pm and lands at 10:49 pm.

The flight takes about 1h 59m.

Last-minute fares on this route - booked within 2 weeks of departure - run 65% above the route average of $353. Book 12 weeks before departure for the lowest fares.

A nonstop flight from St. Louis to Jacksonville takes 1h 59m, covering 753 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

One-way fares from St. Louis to Jacksonville are currently lower than usual. Average one-way flight prices are about $106, which is 47% below the typical average for this route.

Flying via Atlanta Hartsfield-Jackson (ATL) gives the shortest average 1-stop total travel time at 4h 26m, compared with 4h 29m via Nashville Intl (BNA) and 4h 47m via Charlotte Douglas (CLT).

Jacksonville is 1 hour ahead of St. Louis (Eastern Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

Jacksonville Airport (JAX) hosts 5 major car rental companies, with daily rates starting from around $19 for economy cars. Top options include:
• Easirent
• Hertz
• Dollar
• Budget
• Thrifty

Round-trip flights from St. Louis to Jacksonville range from $294 to $437, with an average of $353 over the past 12 months. Anything below $294 counts as a good deal.

JetBlue is the only airline on the St. Louis to Jacksonville route offering in-flight Wi-Fi. Pricing depends on fare class.