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$86+ 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 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
JAX — STL
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheapflights Tip: The best prices from Jacksonville to Lambert-St Louis are usually found in July or August, booked 78 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap 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 August 20, 2025.

Round-trip from

$197
(Southwest)

One-way from

$86
(FlightHub)

Popular in

March

Cheapest in

July

Average price

$258

Good round-trip deal

$225 or less

Good one-way deal

$125 or less
From Jacksonville to Lambert-St Louis
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One-way flight from Jacksonville to Lambert-St Louis
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Highest demand for flights based on searches. 4% potential increase in price ($13 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 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 Jacksonville to Lambert-St Louis.
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Price to beat on a one-way flight from Jacksonville to Lambert-St Louis.
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Find 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 August 20, 2025.

This Southwest deal was found by Cheapflights users on 8/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/108:15 amJAX - STL
Nonstop2h 10mSouthwest
Wed 9/176:40 pmSTL - JAX
Nonstop1h 55mSouthwest
Deal found 8/19$197
This American Airlines deal was found by Cheapflights users on 8/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/102:05 pmJAX - STL
1 stop7h 27mAmerican Airlines
Wed 9/176:00 amSTL - JAX
1 stop6h 44mAmerican Airlines
Deal found 8/19$205
This Delta deal was found by Cheapflights users on 8/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/235:20 amJAX - STL
1 stop5h 39mDelta
Tue 9/235:11 pmSTL - JAX
1 stop4h 26mDelta
Deal found 8/18$207
This United Airlines deal was found by Cheapflights users on 8/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/174:57 pmJAX - STL
1 stop6h 02mUnited Airlines
Wed 11/196:15 amSTL - JAX
1 stop8h 19mUnited Airlines
Deal found 8/19$212
This American Airlines deal was found by Cheapflights users on 8/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/162:05 pmJAX - STL
1 stop7h 27mAmerican Airlines
Thu 9/185:27 amSTL - JAX
1 stop3h 54mAmerican Airlines
Deal found 8/19$215
This Delta deal was found by Cheapflights users on 8/17. 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 9/1011:13 amJAX - STL
1 stop5h 53mDelta
Mon 9/153:36 pmSTL - JAX
1 stop5h 01mDelta
Deal found 8/17$217
This Southwest deal was found by Cheapflights users on 8/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/197:35 pmJAX - STL
Nonstop2h 10mSouthwest
Wed 9/247:30 amSTL - JAX
Nonstop1h 55mSouthwest
Deal found 8/19$224
This American Airlines deal was found by Cheapflights users on 8/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/187:22 pmJAX - STL
1 stop5h 37mAmerican Airlines
Mon 9/222:11 pmSTL - JAX
1 stop5h 39mAmerican Airlines
Deal found 8/19$225
This United Airlines deal was found by Cheapflights users on 8/17. 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 9/109:15 amJAX - STL
2 stops10h 08mUnited Airlines
Mon 9/153:20 pmSTL - JAX
1 stop5h 38mUnited Airlines
Deal found 8/17$227

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 August 20, 2025.
Use the filters below to find and compare flights from Jacksonville to St. Louis that are best for you.

Fly from

Jacksonville

Fly to

St. Louis

Route

Depart

Return

Price

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Wed 9/10

8:15 am-9:25 am

Nonstop2h 10m

Lambert-St Louis

Wed 9/17

6:40 pm-9:35 pm

Nonstop1h 55m

$197

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Wed 9/10

2:05 pm-8:32 pm

1 stop7h 27m

Lambert-St Louis

Wed 9/17

6:00 am-1:44 pm

1 stop6h 44m

$205

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Wed 10/8

8:54 am-12:35 pm

1 stop4h 41m

Lambert-St Louis

Wed 10/15

1:30 pm-7:06 pm

1 stop4h 36m

$207

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Mon 11/17

6:10 pm-7:30 pm

Nonstop2h 20m

Lambert-St Louis

Wed 11/19

6:10 pm-9:05 pm

Nonstop1h 55m

$207

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Tue 9/23

5:20 am-9:59 am

1 stop5h 39m

Lambert-St Louis

Tue 9/23

5:11 pm-10:37 pm

1 stop4h 26m

$207

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Tue 9/16

6:45 pm-8:00 pm

Nonstop2h 15m

Lambert-St Louis

Thu 9/18

8:15 am-11:15 am

Nonstop2h 00m

$207

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Mon 11/17

4:57 pm-9:59 pm

1 stop6h 02m

Lambert-St Louis

Wed 11/19

6:15 am-3:34 pm

1 stop8h 19m

$212

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Tue 9/16

2:05 pm-8:32 pm

1 stop7h 27m

Lambert-St Louis

Thu 9/18

5:27 am-10:21 am

1 stop3h 54m

$215

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Wed 9/10

11:13 am-4:06 pm

1 stop5h 53m

Lambert-St Louis

Mon 9/15

3:36 pm-9:37 pm

1 stop5h 01m

$217

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Thu 10/16

6:05 pm-10:37 am

1 stop17h 32m

$86

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Showing 1-10 of 17 results
1
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The best insider tips for Jacksonville to St. Louis 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 Jacksonville to St. Louis trip
Airports
JAX

JAX offers quick screening times at TSA and easy check-in, making it convenient for early morning departures.

Read more about JAXby Matt Meltzer
STL

Use the MetroLink light rail for a convenient and economical way to reach downtown St. Louis from STL.

Read more about STLby Taryn White
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 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?

Use this chart to determine the optimal time to book a round-trip flight from Jacksonville to St. Louis. Price data was last updated on August 8, 2025.

The best time to book flights from Jacksonville to St. Louis is 29 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 $311). Flying from Jacksonville to St. Louis in March is currently the most expensive (average of $356). 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 August 20, 2025.

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 24% 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 August 17, 2025.

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. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 August 20, 2025.
Read through reviews of airlines operating flights from Jacksonville to St. Louis, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,246 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Comfort

8.0

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
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Comfort

8.0

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
7,982 reviews
Southwest
8.0
Very good
4,246 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Comfort

8.0

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.
United Airlines
7.4
Good
8,928 reviews
Southwest
8.0
Very good
4,246 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Comfort

8.0

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
4,246 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Comfort

8.0

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 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.

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

    If you book a flight from Jacksonville to St. Louis, you will be flying from Jacksonville to Lambert-St Louis. Flights to Lambert-St Louis (STL) from Jacksonville (JAX) take 2h 10m for a nonstop flight. There is 1 flight from Jacksonville to St. Louis per day from 4 airlines.

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

    The Jacksonville to Lambert-St Louis flight path was viewed by 23 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?

    Southwest, American Airlines, and Delta can get you from Jacksonville to St. Louis in just under 2h 10m. Your travel time can differ by up to 5h 17m. There are 753 mi between Jacksonville and St. Louis. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Delta, at $218, was found to be the cheapest airline from Jacksonville to St. Louis.Alternate airlines to your destination round-trip include United Airlines and Southwest. Delta is 34% cheaper than the average price of flights available within the next 90 days to this destination.

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

    On average you can expect to pay $244 for a flight from Jacksonville to St. Louis. The cheapest flight overall is $101 while the most popular route, (Jacksonville - Lambert-St Louis) is currently priced at $197.

  • 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 $311). Flying from Jacksonville to St. Louis in March is currently the most expensive (average of $356). 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
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
St. Peters
Glencoe
Alton
Chesterfield
Farmington
Festus

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Top 4 airlines flying from Jacksonville to St. Louis

Discover the top 4 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 August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$218Average$392FlexibilityNo cancel feeOn-time69%
DeltaCheapest$218Average$329FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$218Average$328FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$218Average$331FlexibilityNo cancel feeOn-time71%

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