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$74+ 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 2/20. Fares are subject to change and may not be available on all flights or dates of travel.
STL — JAX
Feb 19 — Feb 261
Thu 2/19
Thu 2/26
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Jacksonville are usually found in October or September, booked 76 days in advance, depart on a Thursday or Friday 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 January 20, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/19. 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.
Fri 2/278:22 pm
STL
-
JAX
1 stop21h 05m
Frontier
Fri 3/68:18 pm
JAX
-
STL
2 stops17h 45m
Frontier
Deal found 1/19$230
This Kiwi.com deal was found by Cheapflights users on 1/18. 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.
Fri 3/62:09 pm
STL
-
JAX
1 stop4h 24m
Frontier
Sun 3/84:29 pm
JAX
-
STL
1 stop21h 50m
Frontier
Deal found 1/18$239
This Kiwi.com deal was found by Cheapflights users on 1/19. 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.
Thu 2/2610:11 pm
STL
-
JAX
2 stops20h 06m
Frontier
Sun 3/84:29 pm
JAX
-
STL
1 stop21h 50m
Frontier
Deal found 1/19$245
This Kiwi.com deal was found by Cheapflights users on 1/20. 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.
Mon 3/308:12 pm
STL
-
JAX
2 stops46h 21m
Frontier
Mon 4/68:18 pm
JAX
-
STL
1 stop15h 12m
Frontier
Deal found 1/20$250
This United Airlines deal was found by Cheapflights users on 1/20. 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.
Tue 2/177:41 am
STL
-
JAX
1 stop6h 45m
United Airlines
Tue 2/244:39 pm
JAX
-
STL
1 stop8h 20m
United Airlines
Deal found 1/20$257
This Kiwi.com deal was found by Cheapflights users on 1/19. 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 3/1111:32 am
STL
-
JAX
1 stop7h 01m
Frontier
Sun 3/154:29 pm
JAX
-
STL
1 stop22h 05m
Frontier
Deal found 1/19$260
This Kiwi.com deal was found by Cheapflights users on 1/19. 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.
Thu 4/211:21 am
STL
-
JAX
1 stop4h 12m
Frontier
Mon 4/68:18 pm
JAX
-
STL
1 stop15h 12m
Frontier
Deal found 1/19$265
This Kiwi.com deal was found by Cheapflights users on 1/18. 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.
Fri 3/62:09 pm
STL
-
JAX
1 stop4h 24m
Frontier
Sun 3/154:29 pm
JAX
-
STL
1 stop22h 05m
Frontier
Deal found 1/18$272
This American Airlines deal was found by Cheapflights users on 1/18. 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 2/217:05 am
STL
-
JAX
1 stop7h 00m
American Airlines
Thu 2/266:02 am
JAX
-
STL
1 stop5h 59m
American Airlines
Deal found 1/18$273
This United Airlines deal was found by Cheapflights users on 1/20. 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 2/116:00 am
STL
-
JAX
1 stop8h 38m
United Airlines
Sun 2/155:31 pm
JAX
-
STL
1 stop5h 43m
United Airlines
Deal found 1/20$278

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 January 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$214
(Kiwi.com)

One-way from

$74
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$329

Good round-trip deal

$332 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. 8% potential increase in price ($27 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 January 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 January 20, 2026.
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

Fri 3/6

2:09 pm-7:33 pm

1 stop4h 24m

Jacksonville

Sun 3/15

4:29 pm-1:34 pm

1 stop22h 05m

$272

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Thu 3/5

7:45 pm-10:45 pm

Nonstop2h 00m

Jacksonville

Mon 3/9

6:15 am-7:35 am

Nonstop2h 20m

$285

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Mon 3/2

7:20 pm-10:15 pm

Nonstop1h 55m

Jacksonville

Mon 3/9

6:15 am-7:35 am

Nonstop2h 20m

$285

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Tue 4/14

4:46 pm-11:25 pm

1 stop5h 39m

Jacksonville

Fri 4/17

6:00 am-10:16 am

1 stop5h 16m

$294

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Tue 2/10

6:00 am-3:38 pm

1 stop8h 38m

Jacksonville

Sun 2/15

5:31 pm-10:14 pm

1 stop5h 43m

$294

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Wed 2/11

6:00 am-3:38 pm

1 stop8h 38m

Jacksonville

Sun 2/15

5:31 pm-10:14 pm

1 stop5h 43m

$294

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Fri 2/13

6:57 pm-11:59 pm

1 stop4h 02m

Jacksonville

Sun 2/15

7:02 am-12:33 pm

1 stop6h 31m

$297

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Fri 2/27

6:47 pm-12:01 am

1 stop4h 14m

Jacksonville

Sun 3/1

5:30 am-9:06 am

1 stop4h 36m

$299

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Thu 7/9

7:20 am-1:38 pm

1 stop5h 18m

Jacksonville

Sun 7/12

5:30 am-8:06 am

1 stop3h 36m

$299

St. LouisJacksonville

STL - JAX

STLJAX

Lambert-St Louis

Tue 3/10

12:04 pm-4:28 pm

1 stop3h 24m

Jacksonville

Fri 3/13

7:59 pm-11:58 pm

1 stop4h 59m

$299

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/19

Showing 1-10 of 23 results
1
2
3

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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
PricelinePrice Accuracy1 starTrust Score*3 stars

*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 Expedia the most. Expedia 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 January 16, 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 $163). Flying from St. Louis to Jacksonville in December is currently the most expensive (average of $239). 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 January 20, 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 24% on your trip compared to booking a flight at noon.

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 January 20, 2026.
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
4,267 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,267 reviews
Southwest
8.0
Very good
4,267 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,076 reviews
Southwest
8.0
Very good
4,267 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,164 reviews
Southwest
8.0
Very good
4,267 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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 6 times in the past calendar month.

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

    Frontier, Southwest, and American Airlines can get you from St. Louis to Jacksonville in just under 2h. Your travel time can differ by up to 3h 39m. 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 43% 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 $109 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 $367, our data indicates the cheapest price to be $291. The most popular route (Lambert-St Louis - Jacksonville), is priced around $285.

  • 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 $163). Flying from St. Louis to Jacksonville in December is currently the most expensive (average of $239). 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 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 January 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$176Average$301FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$186Average$298FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$214Average$319FlexibilityNo cancel feeOn-time63%

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