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$76+ 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 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
STL — JAX
oct. 17 — oct. 241
vie. 10/17
vie. 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Jacksonville are usually found in October or June, booked 85 days in advance, depart on a Friday or Thursday and return on a Tuesday

Cheap 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 septiembre 17, 2025.

Round-trip from

$146
(United Airlines)

One-way from

$76
(United Airlines)

Popular in

December

Cheapest in

October

Average price

$291

Good round-trip deal

$261 or less
From Lambert-St Louis to Jacksonville
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One-way flight from Lambert-St Louis to Jacksonville
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Highest demand for flights based on searches. 8% potential increase in price ($27 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Lambert-St Louis to Jacksonville.
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Find 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 septiembre 17, 2025.

This United Airlines deal was found by Cheapflights users on 9/15. 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.
jue. 11/138:20 amSTL - JAX
1 stop6h 14mUnited Airlines
lun. 11/174:57 pmJAX - STL
1 stop6h 25mUnited Airlines
Deal found 9/15$146
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/144:42 pmSTL - JAX
1 stop4h 48mAmerican Airlines
jue. 11/205:01 amJAX - STL
1 stop4h 26mAmerican Airlines
Deal found 9/14$159
This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/81:35 pmSTL - JAX
1 stop8h 24mDelta
dom. 10/128:11 pmJAX - STL
1 stop4h 30mDelta
Deal found 9/15$177
This United Airlines deal was found by Cheapflights users on 9/15. 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.
sáb. 10/118:00 amSTL - JAX
1 stop5h 39mUnited Airlines
sáb. 10/188:00 amJAX - STL
1 stop7h 27mUnited Airlines
Deal found 9/15$191
This Booking.com deal was found by Cheapflights users on 9/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/611:07 amSTL - JAX
1 stop4h 06mFrontier
dom. 11/95:18 pmJAX - STL
2 stops20h 59mFrontier
Deal found 9/16$210
This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/166:00 amSTL - JAX
1 stop3h 22mDelta
lun. 10/208:11 pmJAX - STL
1 stop4h 30mDelta
Deal found 9/15$228
This Southwest deal was found by Cheapflights users on 9/16. 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.
mié. 10/158:15 amSTL - JAX
Nonstop1h 55mSouthwest
jue. 10/168:15 pmJAX - STL
Nonstop2h 10mSouthwest
Deal found 9/16$237
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/226:00 amSTL - JAX
1 stop6h 53mAmerican Airlines
dom. 10/265:57 pmJAX - STL
1 stop6h 57mAmerican Airlines
Deal found 9/14$238

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 septiembre 17, 2025.
Use the filters below to find and compare flights from St. Louis to Jacksonville that are best for you.

Fly from

St. Louis

Fly to

Jacksonville

Route

Depart

Return

Price

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

mié. 10/8

1:35 pm-10:59 pm

1 stop8h 24m

Jacksonville

dom. 10/12

8:11 pm-11:41 pm

1 stop4h 30m

$177

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

vie. 11/14

8:20 am-3:34 pm

1 stop6h 14m

Jacksonville

lun. 11/17

1:55 pm-11:44 pm

2 stops10h 49m

$226

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

jue. 11/6

6:00 am-1:34 pm

1 stop6h 34m

Jacksonville

dom. 11/9

8:08 pm-11:40 pm

1 stop4h 32m

$228

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

jue. 10/16

6:00 am-10:22 am

1 stop3h 22m

Jacksonville

lun. 10/20

8:11 pm-11:41 pm

1 stop4h 30m

$228

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

mié. 12/10

8:15 am-11:15 am

Nonstop2h 00m

Jacksonville

lun. 12/15

6:10 pm-7:30 pm

Nonstop2h 20m

$237

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

mié. 10/15

6:00 am-10:22 am

1 stop3h 22m

Jacksonville

jue. 10/16

5:10 am-8:05 am

1 stop3h 55m

$247

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

sáb. 11/15

11:44 am-5:33 pm

1 stop4h 49m

Jacksonville

lun. 11/17

5:28 pm-9:04 pm

1 stop4h 36m

$247

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

lun. 11/17

10:45 am-5:27 pm

1 stop5h 42m

Jacksonville

mar. 11/18

6:38 pm-9:58 pm

1 stop4h 20m

$247

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

vie. 11/14

8:50 pm-11:45 pm

Nonstop1h 55m

Jacksonville

jue. 11/20

8:15 am-9:35 am

Nonstop2h 20m

$254

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

vie. 11/14

8:50 pm-11:45 pm

Nonstop1h 55m

Jacksonville

lun. 11/17

8:15 am-9:35 am

Nonstop2h 20m

$254

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 19 results
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The best insider tips for St. Louis to Jacksonville flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-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.
Cheapflights partnered with top experts to bring you the best recommendations for your St. Louis to Jacksonville trip
Airports
STL

Expect security screening at STL to take 5-10 minutes during off-peak times. Check real-time wait times online before heading to the airport.

Read more about STLby Taryn White
JAX

At JAX, rental car counters are inside baggage claim. Get your rental while waiting for bags for efficiency.

Read more about JAXby Matt Meltzer
Our travel experts
Matt Meltzer

Matt Meltzer

Expert on JAX

Matt Meltzer

Matt Meltzer

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

Taryn White

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

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 September 12, 2025.

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 85 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, August is the cheapest month in which you can book a flight from St. Louis to Jacksonville (average of $278). Flying from St. Louis to Jacksonville in March is currently the most expensive (average of $365). 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 septiembre 17, 2025.

A simple way to save on the total cost of your ticket is to fly from St. Louis to Jacksonville in the afternoon. If you’re flexible enough to do this you can expect to save up to 30% on your trip compared to booking a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Jacksonville. Price data was last updated on September 14, 2025.

Travelers seeking maximum savings on their St. Louis to Jacksonville flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 septiembre 17, 2025.
Read through reviews of airlines operating flights from St. Louis to Jacksonville, such as Southwest, Delta, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,961 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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.

  • What airports do I use to fly from St. Louis to Jacksonville?

    If you wish to fly to Jacksonville from St. Louis, then you need to book flights from Lambert-St Louis to Jacksonville. There is 1 flight from Lambert-St Louis (STL) to Jacksonville (JAX) per day to choose from. Flights to Jacksonville from Lambert-St Louis are available from 3 different airlines, which means you should have some options if you want to compare airfare deals. 1h 55m is how long a nonstop flight from St. Louis to Jacksonville typically takes.

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

    Flights from Lambert-St Louis to Jacksonville have been viewed 6 times in the past calendar month.

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

    Delta, United Airlines, and Southwest can get you from St. Louis to Jacksonville in just under 2h. Your travel time can differ by up to 6h 24m. 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 ($207), American Airlines ($208), and Southwest ($214) offers the cheapest pricing from St. Louis to Jacksonville. You may be able to fly from St. Louis to Jacksonville for 33% less than the average price by searching for these airlines.

  • 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 $275, our data indicates the cheapest price to be $217. The most popular route (Lambert-St Louis - Jacksonville), is priced around $146.

  • 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, August is the cheapest month in which you can book a flight from St. Louis to Jacksonville (average of $278). Flying from St. Louis to Jacksonville in March is currently the most expensive (average of $365). 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
Kingsland
Fernandina Beach
Waycross

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Top 3 airlines flying from St. Louis to Jacksonville

Discover the top 3 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 septiembre 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$207Average$325FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$208Average$301FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$214Average$323FlexibilityNo cancel feeOn-time63%

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