STL - JAX

$68 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 2/27. 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, 0 bags

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
Travelers love KAYAK
41 299 237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$149
Overall average: $327
Frontier
Fri 3/6Thu 3/12
STL - JAX • 1 stop
Cheapest non-stop
$269
Typical prices: $329-$557
Southwest
Wed 3/25Tue 3/31
STL - JAX • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
Avoid peak hours at STL for smoother security lines.
Rent a car at JAX for convenient travel in Florida.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Frontier
Cheapest • from $149 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 47% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 12% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Jacksonville!
Flight Deals
Booking Insights
Expert advice
Flight 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

Fri, Mar 6 - Thu, Mar 12
Frontier Logo
1:09 pm - 6:39 pm
STL
-
JAX
4h 30m
1 stop
Frontier Logo
4:29 pm - 1:34 pm
JAX
-
STL
22h 05m
1 stop
$149Frontier
Fri, Mar 6 - Sun, Mar 8
Frontier Logo
1:09 pm - 6:39 pm
STL
-
JAX
4h 30m
1 stop
Frontier Logo
4:39 pm - 1:19 pm
JAX
-
STL
21h 40m
1 stop
$152Frontier
Fri, Mar 6 - Mon, Mar 9
Frontier Logo
1:09 pm - 6:39 pm
STL
-
JAX
4h 30m
1 stop
Frontier Logo
8:18 pm - 9:49 am
JAX
-
STL
38h 31m
2 stops
$165Frontier
Tue, Mar 3 - Sun, Mar 8
Frontier Logo
3:49 pm - 7:01 pm
STL
-
JAX
26h 12m
2 stops
Frontier Logo
4:39 pm - 1:19 pm
JAX
-
STL
21h 40m
1 stop
$177Frontier
Fri, Mar 6 - Thu, Mar 12
Frontier Logo
8:12 pm - 2:33 pm
STL
-
JAX
41h 21m
2 stops
Frontier Logo
4:29 pm - 1:34 pm
JAX
-
STL
22h 05m
1 stop
$184Frontier
Fri, Mar 6 - Sun, Mar 8
Frontier Logo
1:09 pm - 6:39 pm
STL
-
JAX
4h 30m
1 stop
Frontier Logo
4:39 pm - 9:49 am
JAX
-
STL
18h 10m
2 stops
$208Frontier
Fri, Mar 6 - Wed, Mar 11
Frontier Logo
1:09 pm - 6:39 pm
STL
-
JAX
4h 30m
1 stop
Frontier Logo
8:18 pm - 7:22 am
JAX
-
STL
36h 04m
2 stops
$209Frontier
Wed, Mar 4 - Sun, Mar 8
Multiple Airlines Logo
5:18 pm - 7:45 pm
STL
-
JAX
25h 27m
2 stops
Multiple Airlines Logo
4:39 pm - 1:19 pm
JAX
-
STL
21h 40m
1 stop
$217Multiple Airlines
Mon, Mar 2 - Sun, Mar 8
Multiple Airlines Logo
3:49 pm - 8:54 am
STL
-
JAX
40h 05m
2 stops
Multiple Airlines Logo
4:39 pm - 1:19 pm
JAX
-
STL
21h 40m
1 stop
$233Multiple Airlines
Mon, Mar 2 - Sun, Mar 8
Multiple Airlines Logo
3:49 pm - 8:54 am
STL
-
JAX
40h 05m
2 stops
Multiple Airlines Logo
4:39 pm - 1:19 pm
JAX
-
STL
21h 40m
1 stop
$234Multiple Airlines
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.

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 Friday and avoid Mondays 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 October, where tickets cost $273 (return) on average. On the other hand, the most expensive months are December and April, where the average cost of round-trip tickets is $354 and $342 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 $294, 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 4 weeks before departure, which saves you about 47% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Expert advice

Expert advice for your flight from St. Louis to Jacksonville

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on JAX

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.

Yulia Denisyuk

Yulia Denisyuk

Expert on STL

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.

Good to know

Low seasonJanuary
Cheapest flight$68
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly with an average 4% 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 $68 for a one-way ticket and $149 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?

    American Airlines, and JetBlue offer 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 MAX 8 is the aircraft model that flies most regularly on the St. Louis to Jacksonville flight route.

  • Which airline alliances offer flights from St. Louis to Jacksonville?

    oneworld, and SkyTeam are the airline alliances operating flights between St. Louis and Jacksonville, with oneworld being the most commonly used for this route.

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

    You can catch a nonstop flight from St. Louis to Jacksonville on on Monday, Tuesday, Thursday, Friday, Saturday, and Sunday.

  • 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 $318 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 $306 and an overall rating of 7.9.

  • 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 $332 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 4267 reviews
8.1Boarding
8.6Crew
7.0Food
8.0Comfort
7.5Entertainment
Airline reviews

Pretty seamless, just a tad bit late in taking off and landing.

8.0 ExcellentSudhir, Jan 2026
MCI - LGA
Read more Southwest reviews

Pretty seamless, just a tad bit late in taking off and landing.

Okay, not wonderful. Short flight. Wi-fi didn't work properly. Stuck waiting for a gate to open upon arrival for 20 or so minutes.

They sent a notice that they were boarding an hour early. We had to leave the club and run to the gate. They said sorry, that came from corporate and was a mistake. They did not have enough seating because the flight before it had not taken off on time. They moved our gate and delayed it for an hour.

Everything a cheap airline should be at normal airline rates.

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

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

The flight was delayed and oversold. I volunteered to give up my seat for compensation. Thinking I could get a good night's sleep instead of arriving home at 2 am. It took over an hour to get the new reservation confirmed, three different gate attendants, and two red coats. It took even longer to confirm the overnight hotel, and when I arrived, the line was 45 minutes long, with two people checking in, and at least 15 people slowly, very slowly—no food except frozen convenience food, no coupon for food from airlines. Slept, headed back to the airport, and that flight had an equipment change and a gate change just as they were about to board. It took an additional hour to board as they cleaned the plane from storage.

Comfort Plus seat 11E seemed smaller than prior flights. The movie selection is good. Watched most of the most recent Tron movie. I'll watch the remaining part later as my movie is saved in the Delta Seatback Experience.

Delta is a good airline. I've never had an issue with Delta. I'll continue to fly with them until they show me that I shouldn't.

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

First, Delta needs more flights to/from Miami. Second, a 1000pm leaving at 1230pm is unacceptable from their biggest airport world hub. Another aircraft could have been used such as the aircraft scheduled to be used in the morning for that exact same route. Yes, I did get me there but the lack of sleep the next day didn't help me enjoy my entire trip since I was busy with activities during the weekend. This can be and is expected from Spirit (going bankrupt) and Frontier (despite they're nickel and dimers). But from Delta's World Hub? That's totally unacceptable!

Service in business class was not impressive. I ordered coffee with dinner and then watched other people get 2 refills before I got my 1 cup of coffee, and only after I pressed the attendant button overhead. Furthermore, the seats in the forward cabin need maintenance on this 737-800: the upholstery is detaching from the seat frame, at least on the backs of seats 1C, 1D.

I truly love flying with Delta. They have always treated me with the upmost respect

Our flight attendant in FIRST CLASS was one of the worst I’ve ever had. She was not at all pleasant, nor particularly good at her service.

The flight was an hour and a half late departing which was inconvenient

The flight was great. The gate location was way to far away!!!

No gates avail at DFW so our incoming had to wait 30 mins for a plane to push back because they Had mechanical. We boarded 90 mins delayed and then we had a mechanical. Come on American…do better. Also at my seat the tray table had not been cleaned. Floor had not been cleaned. But captain and flight Att were very picture and apologetic.

It was a little concerning to hear the ground crew arguing with the flight crew over baggage space. Instead of taking them and checking them, they started checking for space in the first class cabin moving items around like the flight crew didn't know what they were doing. I was embarrassed for them.

Trip delayed for 2 hours because of rain. We boarded and have to get down the flight and reboard again.

No enough space plus only allowing one laggage instead of two like other airlines.

Qatar airways ,boarding arrangements at Hamid international airport could been better

On the plus side, crew was attentive, drinks were cold, and in-flight entertainment selection was better than some other airlines. On the negative aide, Plane was delayed almost an hour, either no announcements from the gate crew. Biscoff cookies are gross, appreciate airlines that give a choice. Also, crew had no personality or enthusiasm at all.

UGH I HAD TO MISS MY FIRST FLIGHT TO TAMPA CAUSE OF THE 10 MINUTE DELAY OF THE ORLANDO TO MIAMI ONE SO THEY HAD ME GET ANOTHER TICKET. I AM NOT HAPPY AT ALL BECAUSE IT MADE ME MISS MY CONNECTING FLIGHT FROM TAMPA TO LONDON AND FORCED ME TO MISS A DAY AT MY ROOM IN THE UK.

Wish they didnt delay off-boarding for 10 minutes so i could connect to my flight from miami to tampa

We experienced gate changes and a long delay. My seat was dirty when I boarded and I had to use wipes to clean it myself. There was an unpleasant and overpowering cleaning product scent on the plane as well that lingered through the flight.

I got sick nothing contagious but distressing and the care I received by Kayla? Keighly the flight attendant will be memorable for ever. Thank You

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

Information on your arrival and departure airports