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$70+ Cheap flights from St. Louis to Jacksonville (STL - JAX)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — JAX
May 3 — May 101
Sun 5/3
Sun 5/10
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Jacksonville are usually found in September or October, booked 76 days in advance, depart on a Friday or Wednesday and return on a Tuesday

Cheap flight deals from St. Louis to Jacksonville

Cheapest flights from St. Louis to Jacksonville
Explore the most affordable flight options available from St. Louis to Jacksonville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 3, 2026.

This Southwest deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2910:15 am
STL
-
JAX
Nonstop2h 00m
Southwest
Wed 5/68:20 am
JAX
-
STL
Nonstop2h 15m
Southwest
Deal found 4/1$263
This United Airlines deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/296:30 am
STL
-
JAX
1 stop6h 43m
United Airlines
Tue 5/126:46 pm
JAX
-
STL
1 stop5h 10m
United Airlines
Deal found 4/1$273
This Southwest deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/231:45 pm
STL
-
JAX
1 stop7h 20m
Southwest
Wed 4/298:20 am
JAX
-
STL
Nonstop2h 15m
Southwest
Deal found 4/2$282
This Southwest deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/291:15 pm
STL
-
JAX
2 stops7h 15m
Southwest
Tue 5/121:15 pm
JAX
-
STL
2 stops7h 45m
Southwest
Deal found 4/1$283
This Kiwi.com deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/298:23 pm
STL
-
JAX
1 stop20h 07m
Frontier
Mon 5/49:49 pm
JAX
-
STL
2 stops20h 47m
Frontier
Deal found 3/29$285
This Southwest deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/301:45 pm
STL
-
JAX
2 stops8h 10m
Southwest
Tue 5/128:20 am
JAX
-
STL
Nonstop2h 15m
Southwest
Deal found 4/2$287
This Southwest deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/25:05 pm
STL
-
JAX
Nonstop2h 00m
Southwest
Mon 5/43:35 pm
JAX
-
STL
Nonstop2h 15m
Southwest
Deal found 4/3$291
This Southwest deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/297:35 am
STL
-
JAX
1 stop4h 00m
Southwest
Mon 5/43:35 pm
JAX
-
STL
Nonstop2h 15m
Southwest
Deal found 3/29$296
This Southwest deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2712:40 pm
STL
-
JAX
2 stops7h 50m
Southwest
Mon 6/17:05 pm
JAX
-
STL
1 stop5h 20m
Southwest
Deal found 3/30$297

Find flight deals from St. Louis to Jacksonville

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Jacksonville (JAX). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$263
(Southwest)

One-way from

$70
(Frontier)

Popular in

November

Cheapest in

September

Average price

$339

Good round-trip deal

$347 or less
Provider with most accurate pricing for Lambert-St Louis-Jacksonville flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Jacksonville flights.
Search Deals
From Lambert-St Louis to Jacksonville
Search Deals
One-way flight from Lambert-St Louis to Jacksonville
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($11 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from Lambert-St Louis to Jacksonville.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Jacksonville that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 3, 2026.
Use the filters below to find and compare flights from St. Louis to Jacksonville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Wed 5/27

3:45 pm-9:15 pm

1 stop4h 30m

Jacksonville

Mon 6/1

5:00 pm-11:25 pm

1 stop7h 25m

$287
Quickest round-trip

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Wed 4/29

10:15 am-1:15 pm

Nonstop2h 00m

Jacksonville

Mon 5/4

3:35 pm-4:50 pm

Nonstop2h 15m

$291

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Wed 5/13

10:15 am-1:15 pm

Nonstop2h 00m

Jacksonville

Tue 5/19

8:20 am-9:35 am

Nonstop2h 15m

$291

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Sat 5/2

5:05 pm-8:05 pm

Nonstop2h 00m

Jacksonville

Mon 5/4

3:35 pm-4:50 pm

Nonstop2h 15m

$291

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Sat 5/2

7:45 am-2:38 pm

1 stop5h 53m

Jacksonville

Mon 5/4

5:25 pm-10:30 pm

1 stop6h 05m

$301

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Tue 4/28

12:40 pm-10:15 pm

2 stops8h 35m

Jacksonville

Sun 5/10

7:15 am-11:05 am

1 stop4h 50m

$314

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Sun 5/24

6:00 pm-9:00 pm

Nonstop2h 00m

Jacksonville

Sat 5/30

8:40 am-9:55 am

Nonstop2h 15m

$324

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Wed 4/29

10:15 am-1:15 pm

Nonstop2h 00m

Jacksonville

Sun 5/3

6:25 am-7:40 am

Nonstop2h 15m

$324
Cheapest one-way

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Wed 4/29

6:50 pm-11:59 pm

1 stop4h 09m

$137

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Tue 4/28

6:25 am-3:14 pm

1 stop7h 49m

$137

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Compare providers for flights from St. Louis to Jacksonville

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Jacksonville in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Jacksonville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Jacksonville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Jacksonville flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Jacksonville flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Jacksonville flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Jacksonville

Have a flexible travel schedule? Discover the best time to fly to Jacksonville from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Jacksonville. Price data was last updated on April 2, 2026.

The price you pay for your flight from St. Louis to Jacksonville may vary depending on when you book. For the best chance of a lower fare, look to book 76 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from St. Louis to Jacksonville?

Currently, October is the cheapest month in which you can book a flight from St. Louis to Jacksonville (average of $171). Flying from St. Louis to Jacksonville in February is currently the most expensive (average of $296). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to JAX?

Find hourly flight availability from St. Louis to Jacksonville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 3, 2026.

A simple way to save on the total cost of your ticket is to fly from St. Louis to Jacksonville in the evening. If you’re flexible enough to do this you can expect to save up to 23% on your trip compared to booking a flight in the afternoon.

How much does it cost to fly round-trip from St. Louis to Jacksonville?

The best insider tips for St. Louis to Jacksonville flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your St. Louis to Jacksonville trip
Our travel experts
Matt Meltzer

Matt Meltzer

Expert on JAX

Matt Meltzer has been a travel writer for over a decade, covering U.S. domestic locations and hotels for Thrillist, Fifty Grande, Matador Network, Conde Nast Traveler, and other top publications. He's won multiple travel journalism awards from the Society of American Travel Writers and North American Travel Journalists Association, and currently resides in South Florida.

Read more
Taryn White

Taryn White

Expert on STL

Taryn White is a freelance travel writer, digital creator, and travel advisor who has visited nearly 100 countries and all 50 states. She’s familiar with many airports and enjoys beach hopping, boutique hotels, spa experiences, and exploring local culture. Her work has appeared in Travel + Leisure, Condé Nast Traveler, National Geographic, Smithsonian Magazine, AFAR, and more.

Read more

Reviews of airlines servicing Jacksonville

Get insights into the airlines that provide service to Jacksonville. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Jacksonville. Reviews last updated April 3, 2026.
Read through reviews of airlines operating flights from St. Louis to Jacksonville, such as Southwest,Delta, andJetBlue. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,344 reviews

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,344 reviews
Southwest
8.0
Very good
4,344 reviews

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,379 reviews
Southwest
8.0
Very good
4,344 reviews

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
JetBlue
7.2
Good
2,913 reviews
Southwest
8.0
Very good
4,344 reviews

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,553 reviews
Southwest
8.0
Very good
4,344 reviews

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Jacksonville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this St. Louis to Jacksonville flight route?

    Flights from Lambert-St Louis to Jacksonville have been viewed 2 times in the past calendar month.

  • How long is the flight from St. Louis to Jacksonville?

    Southwest and United Airlines can get you from St. Louis to Jacksonville in just under 4h 30m. Your travel time can differ by up to 1h 23m. Airlines will cover a distance of 753 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from St. Louis to Jacksonville round-trip?

    According to our current data, Delta ($176), American Airlines ($186), and Southwest ($214) offers the cheapest pricing from St. Louis to Jacksonville. You may be able to fly from St. Louis to Jacksonville for 45% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from St. Louis to Jacksonville one-way?

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $66. Users have also found prices from $94 and $99 on Southwest and American Airlines, respectively.

  • What are the cheapest flights from St. Louis to Jacksonville?

    Looking for the cheapest flight from St. Louis to Jacksonville? While on average our users pay $369, our data indicates the cheapest price to be $268. The most popular route (Lambert-St Louis - Jacksonville), is priced around $263.

  • Can I find deals for flights from St. Louis to Jacksonville that include hotel bookings?

    Yes. In addition to deals on St. Louis to Jacksonville flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Jacksonville?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Jacksonville.

  • Can I find deals for business class flights from St. Louis to Jacksonville?

    Yes. Cheapflights offers flight deals from St. Louis to Jacksonville by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, October is the cheapest month in which you can book a flight from St. Louis to Jacksonville (average of $171). Flying from St. Louis to Jacksonville in February is currently the most expensive (average of $296). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Jacksonville?

Book flights to Jacksonville if you plan to visit one of these locations
Jacksonville Beach
Orange Park
Fernandina Beach
Kingsland
Waycross
Yulee

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Top 4 airlines flying from St. Louis to Jacksonville

Discover the top 4 airlines that operate flights from St. Louis to Jacksonville. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$176Average$306FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$186Average$336FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$214Average$319FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$251Average$390FlexibilityNo cancel feeOn-time62%

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