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$79+ 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 10/30. Fares are subject to change and may not be available on all flights or dates of travel.
STL — JAX
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Jacksonville are usually found in February or June, booked 85 days in advance, depart on a Thursday or Wednesday 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 August 14, 2025.

Round-trip from

$191
(American Airlines)

One-way from

$79
(Frontier)

Popular in

December

Cheapest in

February

Average price

$303

Good round-trip deal

$203 or less

Good one-way deal

$158 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. 5% potential increase in price ($17 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 August 2025
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Price to beat on a round-trip flight from Lambert-St Louis to Jacksonville.
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Price to beat on a one-way 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 August 14, 2025.

This Delta deal was found by Cheapflights users on 8/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/246:01 amSTL - JAX
1 stop6h 24mDelta
Wed 10/18:20 amJAX - STL
1 stop5h 01mDelta
Deal found 8/14$191
This Southwest deal was found by Cheapflights users on 8/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/187:25 pmSTL - JAX
Nonstop1h 55mSouthwest
Tue 9/236:45 pmJAX - STL
Nonstop2h 15mSouthwest
Deal found 8/14$195
This American Airlines deal was found by Cheapflights users on 8/12. 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.
Tue 9/93:59 pmSTL - JAX
1 stop5h 56mAmerican Airlines
Tue 9/163:06 pmJAX - STL
2 stops6h 26mAmerican Airlines
Deal found 8/12$196
This Southwest deal was found by Cheapflights users on 8/13. 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 10/18:40 amSTL - JAX
1 stop4h 05mSouthwest
Mon 10/67:55 amJAX - STL
Nonstop2h 10mSouthwest
Deal found 8/13$201
This American Airlines deal was found by Cheapflights users on 8/12. 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.
Sat 10/46:29 amSTL - JAX
1 stop6h 47mAmerican Airlines
Tue 10/75:20 pmJAX - STL
1 stop6h 45mAmerican Airlines
Deal found 8/12$205
This Southwest deal was found by Cheapflights users on 8/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/158:15 amSTL - JAX
Nonstop2h 00mSouthwest
Thu 9/187:35 pmJAX - STL
Nonstop2h 10mSouthwest
Deal found 8/14$209
This United Airlines deal was found by Cheapflights users on 8/11. 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.
Thu 11/138:20 amSTL - JAX
1 stop6h 14mUnited Airlines
Mon 11/174:57 pmJAX - STL
1 stop6h 02mUnited Airlines
Deal found 8/11$214
This Southwest deal was found by Cheapflights users on 8/13. 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.
Fri 9/128:15 amSTL - JAX
Nonstop2h 00mSouthwest
Mon 9/157:20 amJAX - STL
Nonstop2h 10mSouthwest
Deal found 8/13$217
This American Airlines deal was found by Cheapflights users on 8/12. 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.
Sun 9/145:27 amSTL - JAX
1 stop3h 54mAmerican Airlines
Wed 10/88:05 amJAX - STL
1 stop5h 01mAmerican Airlines
Deal found 8/12$218

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 August 14, 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

Wed 9/24

8:17 am-2:16 pm

1 stop4h 59m

Jacksonville

Wed 10/1

11:42 am-6:22 pm

1 stop7h 40m

$191

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Wed 10/8

7:05 am-12:21 pm

1 stop4h 16m

Jacksonville

Wed 10/15

10:04 am-12:35 pm

1 stop3h 31m

$191

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Wed 9/24

7:10 am-11:40 am

1 stop3h 30m

Jacksonville

Wed 10/1

11:52 am-4:37 pm

1 stop5h 45m

$191

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Tue 10/28

6:25 am-11:44 am

1 stop4h 19m

Jacksonville

Tue 10/28

5:20 pm-11:05 pm

1 stop6h 45m

$191

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Tue 9/9

6:00 am-1:29 pm

1 stop6h 29m

Jacksonville

Tue 9/16

6:00 am-12:19 pm

1 stop7h 19m

$191

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Tue 10/28

6:00 am-12:21 pm

1 stop5h 21m

Jacksonville

Wed 10/29

5:10 am-10:26 am

1 stop6h 16m

$191

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Wed 10/1

6:40 pm-9:35 pm

Nonstop1h 55m

Jacksonville

Mon 10/6

8:15 pm-9:25 pm

Nonstop2h 10m

$195

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Thu 9/18

8:15 am-11:15 am

Nonstop2h 00m

Jacksonville

Tue 9/23

6:45 pm-8:00 pm

Nonstop2h 15m

$195

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Tue 9/9

3:59 pm-10:55 pm

1 stop5h 56m

Jacksonville

Tue 9/16

3:06 pm-8:32 pm

2 stops6h 26m

$196

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Thu 10/30

11:07 am-4:13 pm

1 stop4h 06m

$79

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 16 results
1
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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 August 8, 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 August 14, 2025.

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 22% on your trip compared to booking a flight in the morning.

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 August 10, 2025.

Travelers seeking maximum savings on their St. Louis to Jacksonville flight should consider departing on Friday evenings 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 August 14, 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
4,244 reviews

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,244 reviews
Southwest
8.0
Very good
4,244 reviews

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
8.0
Very good
7,980 reviews
Southwest
8.0
Very good
4,244 reviews

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,244 reviews

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

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 5 times in the past calendar month.

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

    According to our current data, American Airlines ($186), Delta ($218), and Southwest ($221) offers the cheapest pricing from St. Louis to Jacksonville. You may be able to fly from St. Louis to Jacksonville for 42% 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 $326, our data indicates the cheapest price to be $82. The most popular route (Lambert-St Louis - Jacksonville), is priced around $191.

  • 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$186Average$311FlexibilityNo cancel feeOn-time71%
DeltaCheapest$218Average$329FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$221Average$357FlexibilityNo cancel feeOn-time63%

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