STL - JAX

$94 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 12/5. 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
$247
Overall average: $318
Delta
Mon 1/5Mon 1/12
STL - JAX • 1 stop
Cheapest non-stop
$261
Typical prices: $277-$444
Southwest
Fri 12/5Tue 12/9
STL - JAX • Non-stop
Our travelers' advice
AI-generated summary based on content written by travel experts
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 $247 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 51% 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

Mon, Jan 5 - Mon, Jan 12
Delta Logo
7:10 am - 12:11 pmSTL-JAX
4h 01m1 stop
Delta Logo
6:58 pm - 11:39 pmJAX-STL
5h 41m1 stop
$247Delta
Find Deal
Fri, Dec 5 - Sun, Dec 7
Multiple Airlines Logo
10:42 am - 5:40 pmSTL-JAX
5h 58m1 stop
Multiple Airlines Logo
10:49 am - 10:33 pmJAX-STL
36h 44m2 stops
$248Multiple Airlines
Find Deal
Tue, Jan 6 - Tue, Jan 13
United Airlines Logo
9:57 am - 8:10 pmSTL-JAX
9h 13m2 stops
United Airlines Logo
5:05 pm - 10:00 pmJAX-STL
5h 55m1 stop
$252United Airlines
Find Deal
Fri, Dec 5 - Tue, Dec 9
Southwest Logo
6:10 pm - 9:05 pmSTL-JAX
1h 55mnonstop
Southwest Logo
6:10 pm - 7:30 pmJAX-STL
2h 20mnonstop
$261Southwest
Find Deal
Mon, Jan 5 - Mon, Jan 12
Southwest Logo
9:20 am - 4:20 pmSTL-JAX
6h 00m1 stop
Southwest Logo
1:35 pm - 8:35 pmJAX-STL
8h 00m2 stops
$262Southwest
Find Deal
Sat, Jan 24 - Tue, Jan 27
Delta Logo
7:10 am - 2:36 pmSTL-JAX
6h 26m1 stop
Delta Logo
3:16 pm - 8:39 pmJAX-STL
6h 23m1 stop
$264Delta
Find Deal
Sat, Jan 24 - Tue, Jan 27
United Airlines Logo
11:22 am - 6:44 pmSTL-JAX
6h 22m1 stop
United Airlines Logo
1:45 pm - 10:58 pmJAX-STL
10h 13m2 stops
$269United Airlines
Find Deal
Thu, Nov 13 - Mon, Nov 17
Frontier Logo
6:22 pm - 12:39 pmSTL-JAX
17h 17m1 stop
Frontier Logo
7:56 pm - 9:07 amJAX-STL
38h 11m2 stops
$270Frontier
Find Deal
Thu, Dec 18 - Mon, Dec 22
American Airlines Logo
6:05 am - 11:59 amSTL-JAX
4h 54m1 stop
American Airlines Logo
4:55 pm - 10:56 pmJAX-STL
7h 01m1 stop
$281American Airlines
Find Deal
Thu, Dec 18 - Sun, Dec 21
American Airlines Logo
6:05 am - 11:59 amSTL-JAX
4h 54m1 stop
American Airlines Logo
5:00 am - 8:35 amJAX-STL
4h 35m1 stop
$282American Airlines
Find Deal
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 $275 (return) on average. On the other hand, the most expensive months are December and April, where the average cost of round-trip tickets is $358 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.

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 $275 on average.

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 51% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

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

Good to know

Low seasonApril
Cheapest flight$94
Best time to beat the crowds but there is an average 14% increase in price.
Most popular time to fly with an average 5% 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 $94 for a one-way ticket and $247 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 $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 $305 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 $264 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
7.5Entertainment
8.6Crew
8.1Boarding
7.0Food
Airline reviews

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

8.0 ExcellentGreg, Oct 2025OAK - BUR
Read more Southwest reviews

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Full cans of soda would be nice. A choice between two snacks would be appreciated.

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.

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.

Movie selection was meh. Food was great. Crew as always great. I paid for premium because that’s the only way not to feel like a sardine. That’s how economy should be imo. Sadly passengers have to pay an extra $1000 to get what they should at base price but that’s all airlines. The airline industry in general treats passengers as cargo.

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.

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.

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

While waiting to claim my checked luggage, I discovered the airline had lost it. After a long wait and inquiries, I discovered it was on another flight. Fortunately, the airline finally sent my luggage home.

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.

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

Information on your arrival and departure airports

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