$79 Cheap Flights from St. Louis (STL) to Jacksonville (JAX)

View $79 flight on Sun, Aug 10, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Jacksonville International Airport (JAX)

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Cheap Flights from St. Louis to Jacksonville (STL-JAX)

Prices were available within the past 7 days and start at $79 for one-way flights and $157 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Sun, Jul 13 - Sun, Jul 20
STL
St. Louis
JAX
Jacksonville
$157 Roundtrip, found 2 hours ago
$157
Roundtrip
found 2 hours ago
Select Southwest Airlines flight, departing Sun, Jul 13 from St. Louis to Jacksonville, returning Sun, Jul 20, priced at $157 found 2 hours ago
Southwest Airlines
Sun, Jul 13 - Sun, Jul 20
STL
St. Louis
JAX
Jacksonville
$167 Roundtrip, found 2 hours ago
$167
Roundtrip
found 2 hours ago
Select Southwest Airlines flight, departing Sun, Jul 13 from St. Louis to Jacksonville, returning Sun, Jul 20, priced at $167 found 2 hours ago
Southwest Airlines
Sun, Jul 13 - Sun, Jul 20
STL
St. Louis
JAX
Jacksonville
$168 Roundtrip, found 2 hours ago
$168
Roundtrip
found 2 hours ago
Select Southwest Airlines flight, departing Sun, Jul 13 from St. Louis to Jacksonville, returning Sun, Jul 20, priced at $168 found 2 hours ago
American Airlines
Thu, Aug 14 - Sun, Aug 17
STL
St. Louis
JAX
Jacksonville
$169 Roundtrip, found 5 hours ago
$169
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Thu, Aug 14 from St. Louis to Jacksonville, returning Sun, Aug 17, priced at $169 found 5 hours ago
American Airlines
Thu, Aug 14 - Sun, Aug 17
STL
St. Louis
JAX
Jacksonville
$170 Roundtrip, found 5 hours ago
$170
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Thu, Aug 14 from St. Louis to Jacksonville, returning Sun, Aug 17, priced at $170 found 5 hours ago
American Airlines
Sun, Aug 10 - Thu, Aug 14
STL
St. Louis
JAX
Jacksonville
$172 Roundtrip, found 2 days ago
$172
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sun, Aug 10 from St. Louis to Jacksonville, returning Thu, Aug 14, priced at $172 found 2 days ago
Delta
Thu, Jul 31 - Sun, Aug 3
STL
St. Louis
JAX
Jacksonville
$177 Roundtrip, found 1 hour ago
$177
Roundtrip
found 1 hour ago
Select Delta flight, departing Thu, Jul 31 from St. Louis to Jacksonville, returning Sun, Aug 3, priced at $177 found 1 hour ago
Delta
Thu, Aug 7 - Sun, Aug 10
STL
St. Louis
JAX
Jacksonville
$181 Roundtrip, found 3 hours ago
$181
Roundtrip
found 3 hours ago
Select Delta flight, departing Thu, Aug 7 from St. Louis to Jacksonville, returning Sun, Aug 10, priced at $181 found 3 hours ago
American Airlines
Thu, Aug 7 - Sun, Aug 10
STL
St. Louis
JAX
Jacksonville
$181 Roundtrip, found 3 hours ago
$181
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Thu, Aug 7 from St. Louis to Jacksonville, returning Sun, Aug 10, priced at $181 found 3 hours ago
United
Mon, Sep 22 - Thu, Sep 25
STL
St. Louis
JAX
Jacksonville
$217 Roundtrip, found 2 days ago
$217
Roundtrip
found 2 days ago
Select United flight, departing Mon, Sep 22 from St. Louis to Jacksonville, returning Thu, Sep 25, priced at $217 found 2 days ago

Find the cheapest month to fly from St. Louis (STL) to Jacksonville (JAX)

July is typically the cheapest month to fly

From $157 - $391 per traveler.

Graph displaying average flight prices per month

0
Flights from St. Louis (STL) to Jacksonville (JAX)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Jacksonville Intl.
Airlines serving
American Airlines, Delta, Southwest Airlines, United
Roundtrip price
$157
Distance
753 mi

St. Louis to Jacksonville Flights

The cheapest times to fly from St. Louis to Jacksonville

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Jacksonville are during the month of July. You can find some of the cheapest flights from St. Louis to Jacksonville with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Jacksonville

Sunday is one of the best days to book for cheap flights from St. Louis to Jacksonville: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Jacksonville

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Jacksonville in 2025. You can also book with separate airlines for your outbound and return journeys, from $79 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Jacksonville flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Jacksonville airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Jacksonville Intl. Airport (JAX) cost?
Book cheap return flights starting from $157 from Lambert-St. Louis Intl. Airport (STL) to Jacksonville Intl. Airport (JAX). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Southwest Airlines flight leaving STL on July 17 2025 and touching down at JAX. The price was last updated on June 22 2025 and has not changed since.
What is the cheapest month to fly from STL to JAX?
The cheapest flights from STL to JAX are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Lambert-St. Louis Intl. Airport (STL) to Jacksonville Intl. Airport (JAX)?
You can fly nonstop from Lambert-St. Louis Intl. Airport (STL) to Jacksonville Intl. Airport (JAX) on a Southwest Airlines flight.
What is the cheapest airline that flies from STL to JAX?
With tickets starting at $79 for a one-way flight from STL to JAX, Southwest Airlines is currently the cheapest airline on this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from STL on July 10 2025. Prices were last updated on June 22 2025 and have not changed since.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Jacksonville Intl. Airport (JAX)?
On average, there are 3 nonstop flights flying from Lambert-St. Louis Intl. Airport (STL) to Jacksonville Intl. Airport (JAX) every week. If you don't find one that fits your schedule, consider taking a flight with a layover. Filter your search results on Expedia to include one or more stops and select the next best option.
What are the most popular departure times for flights from Lambert-St. Louis Intl. Airport (STL) to Jacksonville Intl. Airport (JAX)?
The 2 PM departures from STL to JAX are the top choice for many travelers. These flights can come with a higher price due to their popularity. If you want to save money, choose a less crowded time to fly.
What day of the week has the most flights from STL to JAX?
If you jet off on a Friday, you'll get the largest range of choices for flights from Lambert-St. Louis Intl. Airport (STL) to Jacksonville Intl. Airport (JAX).
What is the earliest flight from Lambert-St. Louis Intl. Airport (STL) to Jacksonville Intl. Airport (JAX)?
Take the earliest flight at around 2:30PM UTC-6, heading out of Lambert-St. Louis Intl. Airport (STL). You'll be flying for approximately 2h, touching down at Jacksonville Intl. Airport (JAX) at approximately 5:30PM UTC-5.
How long does it take to fly from Lambert-St. Louis Intl. Airport (STL) to Jacksonville Intl. Airport (JAX)?
The average flight duration from STL to JAX is 2 hours, covering a total distance of 750 mi.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Jacksonville Intl. Airport (JAX)?
To avoid possible delays on the Lambert-St. Louis Intl. Airport (STL) to Jacksonville Intl. Airport (JAX) route, aim to travel before 3 PM. Departures after this hour are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Jacksonville from Lambert-St. Louis Intl. Airport (STL)?
Check out your flight options from Lambert-St. Louis Intl. Airport (STL) to Jacksonville Intl. Airport (JAX). This is the only airport in Jacksonville you can arrive at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Jacksonville Intl. Airport (JAX) last-minute?
Last-minute fares from STL to JAX are usually more expensive. For the lowest prices, start looking for flights early. That being said, if you can play around with your travel dates, you may land a cheap ticket right before your trip.
Is it cheaper to book a STL to JAX flight and hotel package?
Compared with arranging hotels and flights separately, booking a STL to JAX flight and hotel package with Expedia could result in significant savings. What's more, having everything in one convenient place takes the hassle out of travel planning. Simply pick your flights and choose from our extensive range of hotels, then customize your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Jacksonville Intl. Airport (JAX)?
In most cases, you can modify or cancel your STL to JAX flight. However, additional fees may apply, especially if you made your booking more than 24 hours ago. Check your itinerary for the airline's fees and rules on flight changes, or if you'd like further details, go to our Customer Service portal.

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