STL - JAX

$108 Find Cheap Flights from St. Louis to Jacksonville

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Jacksonville departing on 9/30. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Jacksonville

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Jacksonville, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Jacksonville, as well as popular online travel agencies
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Flights Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Jacksonville that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Jacksonville

Tue, Aug 26 - Tue, Sep 2
Southwest Logo
7:30 am - 10:25 amSTL-JAX
1h 55mnonstop
Southwest Logo
6:45 pm - 8:00 pmJAX-STL
2h 15mnonstop
$215Southwest
Find Deal
Tue, Aug 26 - Tue, Sep 2
Southwest Logo
8:40 am - 1:45 pmSTL-JAX
4h 05m1 stop
Southwest Logo
8:15 am - 9:25 amJAX-STL
2h 10mnonstop
$221Southwest
Find Deal
Sat, Oct 4 - Tue, Oct 7
Delta Logo
6:01 am - 11:40 amSTL-JAX
4h 39m1 stop
Delta Logo
10:04 am - 2:43 pmJAX-STL
5h 39m1 stop
$225Delta
Find Deal
Sat, Oct 4 - Tue, Oct 7
American Airlines Logo
7:23 am - 3:45 pmSTL-JAX
7h 22m2 stops
American Airlines Logo
11:55 am - 4:07 pmJAX-STL
5h 12m1 stop
$230American Airlines
Find Deal
Sat, Aug 30 - Sun, Aug 31
Southwest Logo
10:30 am - 1:30 pmSTL-JAX
2h 00mnonstop
Southwest Logo
11:20 am - 12:30 pmJAX-STL
2h 10mnonstop
$233Southwest
Find Deal
Sat, Sep 13 - Sat, Sep 20
American Airlines Logo
6:10 am - 2:16 pmSTL-JAX
7h 06m2 stops
American Airlines Logo
3:06 pm - 8:32 pmJAX-STL
6h 26m2 stops
$235American Airlines
Find Deal
Fri, Sep 12 - Wed, Sep 17
Southwest Logo
7:25 pm - 10:20 pmSTL-JAX
1h 55mnonstop
Southwest Logo
6:45 pm - 8:00 pmJAX-STL
2h 15mnonstop
$240Southwest
Find Deal
Thu, Sep 4 - Tue, Sep 9
Delta Logo
3:10 pm - 10:37 pmSTL-JAX
6h 27m1 stop
Delta Logo
6:00 am - 11:49 amJAX-STL
6h 49m1 stop
$243Delta
Find Deal
Tue, Sep 30 - Sat, Oct 11
United Airlines Logo
3:23 pm - 9:47 pmSTL-JAX
5h 24m1 stop
United Airlines Logo
11:55 am - 4:28 pmJAX-STL
5h 33m1 stop
$295United Airlines
Find Deal
Tue, Sep 30 - Wed, Oct 8
United Airlines Logo
6:30 am - 2:56 pmSTL-JAX
7h 26m2 stops
United Airlines Logo
11:22 am - 3:44 pmJAX-STL
5h 22m1 stop
$300United Airlines
Find Deal
Expert advice

Expert advice for your flight from St. Louis to Jacksonville

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airports
STL

For a smooth departure, avoid peak hours at STL when security lines can be slow. Consider using MetroLink for easy access to the airport.

Read more about STLby Yulia Denisyuk
JAX

Upon arrival at JAX, consider renting a car for convenient travel around Florida. Rental offices are located in the arrivals hall.

Read more about JAXby Marisa Garcia
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on JAX

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Yulia Denisyuk

Yulia Denisyuk

Expert on STL

Yulia Denisyuk

Yulia Denisyuk

Yulia is a freelance journalist who’s dispatched from 90+ countries. Her work focuses on cultures, adventure trips and air travel, appearing in NatGeo, NYT, CNTraveler, and more. For past assignments, she’s stayed with nomads in Mongolia and learned the art of Imigongo in Rwanda. She’s based in Chicago; in winter she often questions that decision.

Read more
Booking Insights

KAYAK's insights & trends for St. Louis to Jacksonville flights

Get data-powered insights and trends into flights from St. Louis to Jacksonville to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from St. Louis to Jacksonville?

What’s the cheapest day of the week to fly from St. Louis to Jacksonville?

The average price of all round-trip flights from St. Louis to Jacksonville clicked on KAYAK for each day over the last 12 months.

When flying from St. Louis to Jacksonville, you should consider leaving on a Thursday and avoid Sundays if you are looking for the best rates. For your return to St. Louis, you’ll find the best rates on Tuesdays and the most expensive ones on Sundays.

What is the cheapest month to fly from St. Louis to Jacksonville?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Jacksonville, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Jacksonville is February, where tickets cost $288 (return) on average. On the other hand, the most expensive months are December and April, where the average cost of round-trip tickets is $370 and $356 respectively.

Can I save money by flying with a layover from St. Louis to Jacksonville?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $261, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from St. Louis to Jacksonville?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from St. Louis to Jacksonville, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from St. Louis to Jacksonville, you should book around 3 weeks before departure, which saves you about 49% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Good to know

Low seasonApril
Cheapest flight$108
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly with an average 12% increase in price.
Flight from St. Louis to Jacksonville

When to book flights from St. Louis to Jacksonville

Are your dates flexible? Find out the best times to travel from St. Louis to Jacksonville based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Jacksonville

  • What is the cheapest flight from St. Louis to Jacksonville?

    In the last 3 days, the lowest price for a flight from St. Louis to Jacksonville was $108 for a one-way ticket and $215 for a round-trip.

  • Do I need a passport to fly between St. Louis and Jacksonville?

    No

  • Which airports will I be using when flying from St. Louis to Jacksonville?

    When flying out of St. Louis you will be using Lambert-St Louis. You will be landing at Jacksonville, also known as Jacksonville.

  • Which airlines offer Wi-Fi service onboard planes from St. Louis to Jacksonville?

    Only American Airlines offers inflight Wi-Fi service on the St. Louis to Jacksonville flight route.

  • Which aircraft models fly most regularly from St. Louis to Jacksonville?

    The Boeing 737-700 Passenger/BBJ1 (winglets) is the aircraft model that flies most regularly on the St. Louis to Jacksonville flight route.

  • On which days can I fly direct from St. Louis to Jacksonville?

    There are nonstop flights from St. Louis to Jacksonville on a daily basis.

  • Which is the best airline for flights from St. Louis to Jacksonville, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from St. Louis to Jacksonville are Southwest and Delta. With an average price for the route of $360 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $330 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from St. Louis to Jacksonville?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Jacksonville.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Jacksonville?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Jacksonville from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Jacksonville?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Jacksonville with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and JAX can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Jacksonville?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Jacksonville from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from St. Louis to Jacksonville

  • Looking for a cheap flight? 25% of our users found flights on this route for $148 or less one-way and $199 or less round-trip.

Prefer to fly direct from St. Louis to Jacksonville?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Lambert-St Louis to Jacksonville.
Find which airlines fly direct from Lambert-St Louis Airport to Jacksonville Airport, which days they fly and book direct flights.

Direct departures

Lambert-St Louis to Jacksonville

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Direct returns

Jacksonville to Lambert-St Louis

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Reviews of the top 3 airlines serving from St. Louis to Jacksonville

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Jacksonville. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Jacksonville? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4241 reviews
8.0Comfort
8.1Boarding
7.0Food
8.6Crew
7.5Entertainment
Airline reviews

southwest just starting charging for luggage. hadnt realized it until it was too late. now out $70 when i couldve bought a carry on if i wouldve known. free bags was one of the only reasons i chose southwest over another airline (the other being no assigned seats, which is apparently also being changed). stupid business decision. wont be flying southwest anymore.

2.0 MediocreAnonymous, Jul 2025AUS - RDU
Read more Southwest reviews

southwest just starting charging for luggage. hadnt realized it until it was too late. now out $70 when i couldve bought a carry on if i wouldve known. free bags was one of the only reasons i chose southwest over another airline (the other being no assigned seats, which is apparently also being changed). stupid business decision. wont be flying southwest anymore.

The quality of Southwest Airlines continues to degrade each time I fly with them. If it were not for the free luggage, I would probably choose another airline. Their prices are a little bit competitive, but way too high for the quality of the service. Southwest is not unique in this way. Domestic flight in the United States of America has continued to be a lower and lower quality product. Very sad when you compare the quality of domestic airlines to that of many international airlines around the world.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

It is southwest seat was ok. Not the most comfortable seat

Plz don't take away free bags and free seating

Very good. Sad to learn Southwest is going start to charge for bags

Excellent! Only question is how we check in at exactly 24 hours in advance and end up at the end of the B boarding group

Multiple delays and gate changes. Arrived at final destination 6 hours late. All rental cars had been taken.

It went well. Plane wasn't full. Will be great when assigned seating is in place

Excellent experience. WiFi worked on this leg of My trip

Delayed and took off even later than the scheduled delay time

For a 69 year old with health problems I had the worse experience, no wheelchair when I entered a lady told me to sit and wait while a gentleman told me I had to walk to the Delta station, which I did. I had a carry on and a bag, and I was traveling with my service dog, which was on his carrier and the lady charged me for my carry on luggage, beside all the waiting cause of the delay, I had to walk to get my luggage cause no wheelchair showed up, I am so disappointed. I will get in touch with the company. I got home at 3:00 am, not good for my health situation.

Great experience on Delta. Staff from baggage check to flight attendants were very courteous and professional. My only issue was a personal preference for pretzels instead of the chips and cookies that were offered.

Always good but we must do something about people in rows ahead of you that don't put their seats back up when they are suppose to. And It's rough to not be able to even lean over to get something out of my purse.

this crew didn't care much. bumping carts into seats more times than i care to remember

Everything was fine except the entertainment was not working for half of the flight.

Easy boarding with an extremely kind attendant. Seats were spacious and we had 3 seats for 2 people so we could stretch out. Comfortable air flow and very attentive and hospital attendants. Bathrooms and food were the only negative. Bathrooms were so small you could hardly get in and close the door. I don’t think an obese person would fit or a person with a movement disability. Food was the trending food for flights, nonexistent. We spent $40 getting sandwich and snack at airport for our 6 hour flught.

My flight was canceled after being rescheduled for four days canceling my trip. Kayak and everyone affiliated with it I.e the airlines, and just fly have been excruciating to deal with. My trip to visit family had to be canceled as there was no way to make it. I am furious at all of you.

They delayed our flight because of bad weather in NY which was completely understandable. Then they cancelled our flight and a later flight that evening. The earliest we could fly was the next morning. We ended up buying last minute tickets on another airline and made it home slightly delayed but safely that evening. Delta kept saying it was weather related but if that was the case how did we make it back on another airline? The weather in NY was cloudy but not bad.

I am very bothered by the events today. I can't believe the flight attendants allowed someone to take my seat and made me move. It was embarrassing. I was in the right. The lady just didn't want move. I can't believe delta would allow this to stand and disrespect my rights as a passenger. The lady complained about her leg and that she couldn't move. Firstly somehow she was able to make it to row 24. Not sure how much her leg could have hurt. Secondly, I'm in plenty of pain myself. I just finished chemotherapy a several weeks ago. My body is constantly sore. Yet deltas flight attendants didn't appropriately protect my rights. In the end they found me a seat on the plane but I want to understand how delta can operate this way. They in essence allowed a bully to get their way.

Flight delays numerous times. Everytime we would get close to boarding it would be delayed again. Strung along the entire time.

This flight never occurred because AA couldn’t get their act together.

During service there was a garbage/beverage spill near our seats that never was cleaned up. On a relatively short flight when we’re fortunate enough to actually have in flight movies available, the flight attendants pitching the AADVANTAGE credit card shouldn’t talk for the last 10 minutes of the flight so that we miss the end of the movie.

Waited on the runway for takeoff for 2.5 hours. Air traffic rerouted us. The plane didn't have enough fuel, so had to go back to the gate. Had to wait for a new pilot. Should have landed at 5:22. Didn't land until 9:10. Trash flight.

The boarding was pretty easy. However, the first class seats are not lay flat as other airlines (like JetBlue) has and therefore sleeping was a challenge.

Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.

Would have thought that they would gas up plane before everyone got on board

Fine. On time, cabin service was fine, bag arrived. All good. Flying into DCA so did not collide with any helicopters, which is also good. Horrid incident that could have and should have been prevented.

Standard. No different than a discount carrier on a short trip.

Two flight changes before the scheduled flight. On the day of the flight, the flight was delayed, which caused the connecting flight to be missed. Then, I was directed to another airport (CUN) and traveled to Tulum. American gave a $12 voucher for lunch. The least expensive item on the menu at a Mexican restaurant was $9.99. Driving to Tulum was a bad auto crash, and traffic was delayed two-plus hours. The bottom line is that we should have been at the hotel at noon, but it ended up at 11:30 PM.

Everything you need to know for your flight from St. Louis to Jacksonville

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