JAX - STL

$74 Find Cheap Flights from Jacksonville to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Jacksonville to St. Louis departing on 7/21. 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 St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Jacksonville to St. Louis, 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 Jacksonville to St. Louis, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 21% 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
$142
Typical prices: $254-$409
Frontier
Tue 7/28Sun 8/2
JAX - STL • 1 stop
Cheapest non-stop
$258
Typical prices: $197-$328
Southwest
Wed 8/5Wed 8/12
JAX - STL • Non-stop
Top airlines
Cheapest • from $142 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with Southwest. Average duration is 2h 10m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg $316 (round-trip)
Shortest trip • 3h 45m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 41% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 29% price drop
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 St. Louis!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Jacksonville to St. Louis 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 Jacksonville to St. Louis

Tue, Jul 28 - Sun, Aug 2
Frontier Logo
6:29 pm - 8:57 am
JAX
-
STL
15h 28m
1 stop
Frontier Logo
6:34 pm - 5:34 pm
STL
-
JAX
22h 00m
1 stop
$142Frontier
Wed, Aug 5 - Wed, Aug 12
Frontier Logo
6:29 pm - 5:37 pm
JAX
-
STL
24h 08m
1 stop
Frontier Logo
4:57 pm - 5:34 pm
STL
-
JAX
23h 37m
1 stop
$145Frontier
Fri, Jul 17 - Sun, Jul 19
Frontier Logo
6:29 pm - 8:57 am
JAX
-
STL
15h 28m
1 stop
Frontier Logo
6:34 pm - 5:34 pm
STL
-
JAX
22h 00m
1 stop
$162Frontier
Sat, Jul 18 - Sat, Jul 25
Frontier Logo
6:29 pm - 5:37 pm
JAX
-
STL
24h 08m
1 stop
Frontier Logo
4:57 pm - 5:34 pm
STL
-
JAX
23h 37m
1 stop
$165Frontier
Tue, Jul 14 - Sun, Jul 19
Frontier Logo
6:29 pm - 8:57 am
JAX
-
STL
15h 28m
1 stop
Frontier Logo
6:34 pm - 5:34 pm
STL
-
JAX
22h 00m
1 stop
$177Frontier
Fri, Jul 31 - Sat, Aug 8
Frontier Logo
6:29 pm - 11:59 pm
JAX
-
STL
30h 30m
2 stops
Frontier Logo
4:57 pm - 5:34 pm
STL
-
JAX
23h 37m
1 stop
$204Frontier
Tue, Jul 28 - Sun, Aug 2
Frontier Logo
6:29 pm - 11:59 pm
JAX
-
STL
30h 30m
2 stops
Frontier Logo
6:34 pm - 5:34 pm
STL
-
JAX
22h 00m
1 stop
$207Frontier
Thu, Sep 10 - Mon, Sep 14
Multiple Airlines Logo
6:46 pm - 9:40 am
JAX
-
STL
15h 54m
1 stop
Multiple Airlines Logo
10:35 am - 11:38 am
STL
-
JAX
24h 03m
2 stops
$210Multiple Airlines
Tue, Jul 14 - Wed, Jul 15
Frontier Logo
6:29 pm - 8:57 am
JAX
-
STL
15h 28m
1 stop
Frontier Logo
4:57 pm - 5:34 pm
STL
-
JAX
23h 37m
1 stop
$211Frontier
Tue, Jul 28 - Fri, Jul 31
Multiple Airlines Logo
6:29 pm - 8:57 am
JAX
-
STL
15h 28m
1 stop
Multiple Airlines Logo
4:57 pm - 4:04 pm
STL
-
JAX
22h 07m
2 stops
$212Multiple Airlines
Booking Insights

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

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

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

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Jacksonville to St. Louis departing in July.

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

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

Your flight ticket price will generally be cheaper if you fly to St. Louis on a Tuesday and more expensive on a Sunday. On your return trip to Jacksonville, you should consider flying back on a Friday, and avoid Sundays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Jacksonville to St. Louis, 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 Jacksonville to St. Louis is August, where tickets cost $251 (return) on average. On the other hand, the most expensive months are March and June, where the average cost of round-trip tickets is $443 and $397 respectively.

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

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.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $397 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Jacksonville to St. Louis, 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 Jacksonville to St. Louis, you should book around 4 weeks before departure, which saves you about 41% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Expert advice

Expert advice for your flight from Jacksonville to St. Louis

 
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$74
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly and prices are also 30% lower on average.
Flight from Jacksonville to St. Louis

When to book flights from Jacksonville to St. Louis

Are your dates flexible? Find out the best times to travel from Jacksonville to St. Louis 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 Jacksonville to St. Louis

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

    In the last 5 days, the lowest price for a flight from Jacksonville to St. Louis was $74 for a one-way ticket and $142 for a round-trip.

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

    No

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

    Jacksonville airport is called Jacksonville and the only airport in St. Louis is Lambert-St Louis.

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

    American Airlines, JetBlue, and Delta offer inflight Wi-Fi service on the Jacksonville to St. Louis flight route.

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

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the Jacksonville to St. Louis flight route.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Jacksonville to St. Louis are Southwest and Delta. With an average price for the route of $351 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 $354 and an overall rating of 7.8.

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

    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 Jacksonville to St. Louis.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Jacksonville 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 Jacksonville to St. Louis?

    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 St. Louis with an airline and back to Jacksonville with another airline. Booking your flights between Jacksonville and STL 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 Jacksonville to St. Louis?

    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 St. Louis from Jacksonville 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 Jacksonville to St. Louis

  • Looking for a cheap flight? 25% of our users found flights on this route for $208 or less one-way and $378 or less round-trip.

Prefer to fly direct from Jacksonville to St. Louis?

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

Direct departures

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

Direct returns

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

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

 
See real verified KAYAK customer reviews for airlines flying from Jacksonville to St. Louis. 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 Jacksonville to St. Louis? 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 4246 reviews
7.5Entertainment
8.1Boarding
8.6Crew
7.0Food
8.0Comfort
Airline reviews

I have roller bag with food and medication told me I couldn't bring on my 2nd flight today. 15 years flying with SW never an issue with that bag.

2.0 MediocreStuart, Mar 2026
HOU - STL
Read more Southwest reviews

I have roller bag with food and medication told me I couldn't bring on my 2nd flight today. 15 years flying with SW never an issue with that bag.

I have not flown Southwest in awhile and had a very pleasant experience. From ticketing to boarding to the flight. The flight left on time and landed ahead of schedule. It won't be so long next time!!

Everything went smoothly and we even arrived a little bit early.

Boarded on time but once we were ready for take off, the crew determined that, although every seat was taken, somehow someone was on the wrong flight. Delay, delay delay, announcements and ended up with one person checking EVERY ID against their passenger Manifest only to figure out it was a "clerical error." We departed 54 minutes late causing me to run in the St. Louis Airport to make my connection and lose the priority boarding spot I had paid for. Unnecessary delay.

Southwest's seats are the least comfortable I have ever sat in.

For my birthday trip this was my second time ever flying, this trip was the best.

Crew was great flight was great baggage claim was a failure. It took over 1 hour for bags to arrive. Poor communication poor effort when I spoke to the supervisor about the delay

Everything was great except the food. The pretzels are really crappy.

Southwest is definitely the happiest airline to fly with. They are always kind and friendly with a sense of humor.

Noticed the width between seats seemed less. I wasn’t very comfortable. I’m of regular weight btw. We got graham cracker cookie snack, no choices. The bathrooms toilet roll was broken, and the light wouldn’t come on when I tried to close bathroom door.. I wasn’t sure it was locked?

Aside from a completely packed plane, I really have no complaints.

The flight was very good and the staff was very friendly and helpful!

We landed and sat on the tarmac for 45 minutes because they only have one gate at the airport and there was another plane running late so we had to wait

The food is terrible. The staff is wonderful. Comfort is good.

The boarding process needs to be refined. Sometimes the gate crew calls out the zones and then flip to showing the.zones boarding on the gate monitor display. So, unless you are huddled around the gate lanes watching the monitor, you could miss your boarding zone. Suggest the zones be announced each time a new zone is allowed to board.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Excellent check-in. Crew was good. Excellent communication from flight deck.

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

Flight was on time, the staff was personable & professional, & the plane arrived on time.

As we lined up to board they gave our plane to a flight going to Newark. So then we got delayed until they could find another plane. Flight crew was ok. I’m assuming since it’s a shorter flight they only offered water and coffee.

We called Kayak for a change due to the TSA situation in Atlanta. What we got was a canceled return flight (in error) and we had to find the mistake. Not happy with Kayak who blamed it on AA.

Small plane, poor meal choices for first class, bad terminal and boarding experience at LAX

Boarding delayed 20 minutes for no reason, no wifi, in flight entertainment, or snacks / waters?

This flight captain and crew were amazing, started ahead of time of departure and reached 30 mins before arrival time. Amazing!

Improvements in communication and empathy are absolutely necessary for American Airlines staff (top down). It’s like they are numb to the needs of their customers.

I like the speed of boarding and deplaning and the fact that everything was on time. The crew (attendants) were probably quite new and did not begin the in cabin service until 30 min before landing even though there was little to no air turbulence for the last 1.5 hours of the flight. It made for a mad scramble at the end to get trash collected and carts stowed before touch down.

The flights was delayed by hours and it was the firmest landing I have experienced in my life. My back is still sore.

I did like the employee's, they are very friendly and all smiled most of the time, Overall, from checking in bags to getting on plane, not enough employees to be able to get all on the plane, therefore I was not able to get on the plane, due to no one wea there for me to check in my bag, so I decided to go thru the security point and by the time they were done with my bags, I was told that my bag cannot be checked in, and then found out that the lady that does the check in was boarding the customers onto the plane, she said that she was going back and fourth, there for was not able to get on the plane, which changed all my flights by the time I got to Dallas, I was on standby 3 times, and wasn't sure about being able to get on the fourth plane, so ended up buying another plane ticket, so I could make my destination on time.

Not sure about entertainment as I didn't use any, so maybe there should be an NA option on this survey. Otherwise everything was just as it should be. Of course I wish planes were more comfortable and had seats that would tilt back further.

American Airlines “Randy” questioned why I needed preboarding and denied my request for same. Then Randy attempted to berate me when I boarded with my group. I was seated in an exit roll with a young man with a disability that exhibited difficulty controlling and settling himself. But Tandy questioned my disability. The flight was horrible. It was overpacked.

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

Information on your arrival and departure airports