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$60+ Cheap flights from Jacksonville to St. Louis (JAX - STL)

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 7/24. Fares are subject to change and may not be available on all flights or dates of travel.
JAX — STL
Aug 8 — Aug 151
Sat 8/8
Sat 8/15
1 adult, Economy
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Cheapflights Tip: The best prices from Jacksonville to Lambert-St Louis are usually found in August or October, booked 51 days in advance, depart on a Tuesday or Wednesday and return on a Friday

Cheap flight deals from Jacksonville to St. Louis

Cheapest flights from Jacksonville to St. Louis
Explore the most affordable flight options available from Jacksonville to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 9, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/7. 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 8/56:29 pm
JAX
-
STL
1 stop24h 08m
Frontier
Sat 8/154:57 pm
STL
-
JAX
1 stop23h 37m
Frontier
Deal found 7/7$121
This Kiwi.com deal was found by Cheapflights users on 7/4. 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 8/66:29 pm
JAX
-
STL
1 stop15h 28m
Frontier
Thu 8/136:34 pm
STL
-
JAX
1 stop22h 00m
Frontier
Deal found 7/4$122
This Kiwi.com deal was found by Cheapflights users on 7/8. 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 7/316:29 pm
JAX
-
STL
1 stop15h 28m
Frontier
Sat 8/84:57 pm
STL
-
JAX
1 stop23h 37m
Frontier
Deal found 7/8$123
This Kiwi.com deal was found by Cheapflights users on 7/8. 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.
Tue 9/226:46 pm
JAX
-
STL
1 stop15h 54m
Frontier
Fri 9/2510:35 am
STL
-
JAX
1 stop6h 16m
Frontier
Deal found 7/8$124
This Kiwi.com deal was found by Cheapflights users on 7/5. 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.
Sun 8/166:29 pm
JAX
-
STL
1 stop15h 28m
Frontier
Thu 8/206:17 pm
STL
-
JAX
1 stop22h 53m
Frontier
Deal found 7/5$125
This Kiwi.com deal was found by Cheapflights users on 7/5. 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 7/306:29 pm
JAX
-
STL
1 stop15h 28m
Frontier
Wed 8/54:57 pm
STL
-
JAX
1 stop23h 37m
Frontier
Deal found 7/5$129
This Kiwi.com deal was found by Cheapflights users on 7/7. 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 7/306:29 pm
JAX
-
STL
1 stop15h 28m
Frontier
Tue 8/46:34 pm
STL
-
JAX
1 stop22h 00m
Frontier
Deal found 7/7$131
This Kiwi.com deal was found by Cheapflights users on 7/7. 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.
Sun 9/276:46 pm
JAX
-
STL
1 stop15h 54m
Frontier
Wed 10/710:35 am
STL
-
JAX
1 stop6h 16m
Frontier
Deal found 7/7$142
This Kiwi.com deal was found by Cheapflights users on 7/8. 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 10/236:46 pm
JAX
-
STL
1 stop15h 54m
Frontier
Mon 10/2610:35 am
STL
-
JAX
1 stop6h 16m
Frontier
Deal found 7/8$143
This Kiwi.com deal was found by Cheapflights users on 7/8. 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 10/306:46 pm
JAX
-
STL
1 stop15h 54m
Frontier
Sun 11/110:35 am
STL
-
JAX
1 stop6h 16m
Frontier
Deal found 7/8$146

Find flight deals from Jacksonville to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Jacksonville (JAX) to St. Louis (STL). 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 July 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$121
(Kiwi.com)

One-way from

$60
(Kiwi.com)

Popular in

March

Cheapest in

August

Average price

$364

Good round-trip deal

$398 or less

Good one-way deal

$208 or less
Provider with most accurate pricing for Jacksonville-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Jacksonville-Lambert-St Louis flights.
Search Deals
From Jacksonville to Lambert-St Louis
Search Deals
One-way flight from Jacksonville to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($26 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Jacksonville to Lambert-St Louis.
Search Deals
Price to beat on a one-way flight from Jacksonville to Lambert-St Louis.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Jacksonville to St. Louis 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 July 9, 2026.
Use the filters below to find and compare flights from Jacksonville to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Wed 8/5

6:15 am-7:25 am

Nonstop2h 10m

Lambert-St Louis

Sat 8/15

8:35 am-11:35 am

Nonstop2h 00m

$233

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Thu 8/27

4:45 pm-10:59 pm

1 stop7h 14m

Lambert-St Louis

Mon 8/31

3:13 pm-11:20 pm

1 stop7h 07m

$301

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Fri 11/6

5:45 am-7:05 am

Nonstop2h 20m

Lambert-St Louis

Sun 11/8

4:30 pm-11:40 pm

1 stop6h 10m

$324
Quickest round-trip

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Fri 10/23

5:45 am-6:55 am

Nonstop2h 10m

Lambert-St Louis

Sun 10/25

8:05 pm-11:00 pm

Nonstop1h 55m

$325

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Fri 9/25

2:00 pm-3:10 pm

Nonstop2h 10m

Lambert-St Louis

Sun 9/27

6:55 pm-9:55 pm

Nonstop2h 00m

$325

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Mon 7/27

5:30 am-9:43 am

1 stop5h 13m

Lambert-St Louis

Wed 8/5

7:00 am-1:24 pm

1 stop5h 24m

$357

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Sat 10/10

1:50 pm-7:25 pm

1 stop6h 35m

Lambert-St Louis

Mon 10/19

5:10 am-11:00 am

1 stop4h 50m

$357

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Mon 9/21

2:00 pm-3:10 pm

Nonstop2h 10m

Lambert-St Louis

Thu 9/24

11:40 am-8:15 pm

1 stop7h 35m

$357

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Thu 11/26

7:20 am-8:35 am

Nonstop2h 15m

Lambert-St Louis

Sun 11/29

5:20 am-3:10 pm

1 stop8h 50m

$393
Cheapest one-way

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Tue 8/4

6:29 pm-8:57 am

1 stop15h 28m

$63

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/4

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Jacksonville to St. Louis

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 Jacksonville to St. Louis in July.
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 Jacksonville-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Jacksonville-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Jacksonville-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Jacksonville-St. Louis 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 Jacksonville-St. Louis 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 Jacksonville to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Jacksonville 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 Jacksonville to St. Louis

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

The best time to book flights from Jacksonville to St. Louis is 50 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, August is the cheapest month in which you can book a flight from Jacksonville to St. Louis (average of $251). Flying from Jacksonville to St. Louis in March is currently the most expensive (average of $443). 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 JAX to STL?

Find hourly flight availability from Jacksonville to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 9, 2026.

When flying from Jacksonville to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 19% versus a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Jacksonville to St. Louis. Price data was last updated on July 4, 2026.

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

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

The best insider tips for Jacksonville to St. Louis 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 Jacksonville to St. Louis 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 St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated July 9, 2026.
Read through reviews of airlines operating flights from Jacksonville to St. Louis, such as Southwest,Delta, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
7.9
Good
4,248 reviews

Food

7.0

Overall

7.9

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
6.0
Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers
Southwest
7.9
Good
4,248 reviews
Southwest
7.9
Good
4,248 reviews

Food

7.0

Overall

7.9

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
6.0
Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers
Delta
7.8
Good
8,454 reviews
Southwest
7.9
Good
4,248 reviews

Food

7.0

Overall

7.9

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
6.0
Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers
American Airlines
7.1
Good
11,792 reviews
Southwest
7.9
Good
4,248 reviews

Food

7.0

Overall

7.9

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
6.0
Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers

Related info for your journey

Find useful and relevant information for your journey from Jacksonville to St. Louis. 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 Jacksonville to St. Louis flight route?

    The Jacksonville to Lambert-St Louis flight path was viewed by 8 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Frontier can get you from Jacksonville to St. Louis in just under 24h 08m. Your travel time can differ by up to . There are 753 mi between Jacksonville and St. Louis.

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

    Southwest, at $203, was found to be the cheapest airline from Jacksonville to St. Louis.Alternate airlines to your destination round-trip include Delta and American Airlines. Southwest is 42% cheaper than the average price of flights available within the next 90 days to this destination.

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

    The cheapest airlines for a one-way flight from Jacksonville to St. Louis are United Airlines ($75), Delta ($112), and Southwest ($135).

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

    On average you can expect to pay $334 for a flight from Jacksonville to St. Louis. The cheapest flight overall is $105 while the most popular route, (Jacksonville - Lambert-St Louis) is currently priced at $191.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Jacksonville to St. Louis 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 Jacksonville to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Jacksonville to St. Louis (average of $251). Flying from Jacksonville to St. Louis in March is currently the most expensive (average of $443). 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 St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Alton
Farmington

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 3 airlines flying from Jacksonville to St. Louis

Discover the top 3 airlines that operate flights from Jacksonville to St. Louis. 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 July 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$203Average$353FlexibilityNo cancel feeOn-time63%
DeltaCheapest$214Average$351FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$255Average$429FlexibilityNo cancel feeOn-time71%

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