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 1/17. 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

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$162
Overall average: $287
Frontier
Tue 1/27Fri 1/30
STL - JAX • 2 stops
Cheapest non-stop
$291
Overall average: $294
Southwest
Sat 1/17Mon 1/19
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
Delta
Cheapest • from $283 (round-trip)
Southwest
Best reviews • 7.9 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 56% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 11% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Nonstop flights
6 days a week
There are direct flights from St. Louis to Jacksonville 6 days a week: Mon, Tue, Thu, Fri, Sat, Sun.
Direct flights
Direct flights
Direct flights
Direct flights
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

Tue, Jan 27 - Fri, Jan 30
Frontier Logo
5:42 pm - 6:33 pm
STL
-
JAX
23h 51m2 stops
Frontier Logo
7:18 pm - 6:51 am
JAX
-
STL
12h 33m1 stop
$162Frontier
Fri, Jan 30 - Wed, Feb 4
Frontier Logo
8:22 pm - 4:23 pm
STL
-
JAX
19h 01m1 stop
Frontier Logo
7:23 pm - 10:23 am
JAX
-
STL
40h 00m2 stops
$200Frontier
Mon, Jan 26 - Fri, Jan 30
Multiple Airlines Logo
10:16 am - 5:08 pm
STL
-
JAX
29h 52m2 stops
Multiple Airlines Logo
7:18 pm - 6:51 am
JAX
-
STL
12h 33m1 stop
$207Multiple Airlines
Tue, Feb 24 - Fri, Feb 27
Multiple Airlines Logo
3:49 pm - 6:58 pm
STL
-
JAX
26h 09m2 stops
Multiple Airlines Logo
8:09 pm - 6:51 am
JAX
-
STL
11h 42m1 stop
$208Multiple Airlines
Wed, Jan 28 - Fri, Jan 30
Multiple Airlines Logo
8:22 pm - 3:05 pm
STL
-
JAX
17h 43m2 stops
Multiple Airlines Logo
7:18 pm - 6:51 am
JAX
-
STL
12h 33m1 stop
$227Multiple Airlines
Wed, Feb 25 - Fri, Feb 27
Multiple Airlines Logo
8:17 pm - 3:05 pm
STL
-
JAX
17h 48m2 stops
Multiple Airlines Logo
8:09 pm - 6:51 am
JAX
-
STL
11h 42m1 stop
$232Multiple Airlines
Fri, Jan 16 - Sun, Jan 18
Multiple Airlines Logo
8:39 am - 7:22 pm
STL
-
JAX
9h 43m2 stops
Multiple Airlines Logo
4:13 pm - 6:51 am
JAX
-
STL
15h 38m1 stop
$261Multiple Airlines
Fri, Feb 27 - Wed, Mar 4
Multiple Airlines Logo
8:17 pm - 6:58 pm
STL
-
JAX
21h 41m1 stop
Multiple Airlines Logo
8:39 pm - 11:59 pm
JAX
-
STL
28h 20m2 stops
$263Multiple Airlines
Fri, Jan 16 - Mon, Jan 19
Frontier Logo
8:32 pm - 7:22 pm
STL
-
JAX
21h 50m1 stop
Frontier Logo
8:54 am - 10:34 pm
JAX
-
STL
14h 40m2 stops
$264Frontier
Wed, Feb 11 - Fri, Feb 13
Multiple Airlines Logo
3:49 pm - 10:41 am
STL
-
JAX
17h 52m2 stops
Multiple Airlines Logo
8:09 pm - 6:51 am
JAX
-
STL
11h 42m1 stop
$276Multiple 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 Tuesdays 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 $367 and $351 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 56% 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.
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.

JAX

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

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

Good to know

Low seasonApril
Cheapest flight$68
Best time to beat the crowds but there is an average 14% increase in price.
Most popular time to fly with an average 6% 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 $162 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?

    JetBlue, and American Airlines 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 737-700 Passenger/BBJ1 (winglets) 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?

    SkyTeam, and oneworld are the airline alliances operating flights between St. Louis and Jacksonville, with SkyTeam being the most commonly used for this 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 $317 and an overall rating of 7.9, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $296 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 $377 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

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

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.
7.9
SouthwestOverall score based on 4250 reviews
8.1Boarding
8.0Comfort
7.0Food
7.5Entertainment
8.6Crew
Airline reviews

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.

2.0 MediocreRobert, Dec 2025
LAS - TPA
Read more Southwest reviews

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

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.

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!!!

The flight attendant in first class was beyond rude and didn't care at all about her job. AND the gate agent was even worse than the flight attendant for rudeness. She was awful.

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

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.

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

Waaay too small plane. They also need to up the size of the overhead bins. I would love to keep me 3k with of camera equipment in my hard case baggahe instead of it being thrown into the belly of the plane

Attendants were pleasant and the flight was smooth and relaxed.

It was fine. No drinks nor snacks offered though. I thought that was unusual.

Delays to take off and to leave the plane after landing added a lot of time to this flight.

It was a red eye flight, so no meals were provided, but it was fine with snacks. The seats felt cramped and almost too narrow.

We didn't take off until an hour after we boarded.

Wish they had the seat-back video screens for watching movies or playing games.

Very good but wish they had the seat-back video screens for movies & games

Flight was delayed not sure why no explanation given and no apologies either. Otherwise the flight was fine

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

Information on your arrival and departure airports