$127+ 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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
STL — JAX
Jun 26 — Jul 31
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Jacksonville with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Lambert-St Louis to Jacksonville are usually found in September or October, booked 76 days in advance, depart on a Friday or Wednesday and return on a Tuesday
Cheap flight deals from St. Louis to Jacksonville
Cheapest
Best
Last-minute
One-way
Cheapest flights from St. Louis to JacksonvilleExplore 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 May 27, 2026.
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 May 27, 2026.
This Southwest deal was found by Cheapflights users on 5/26. 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 8/191:40 pm
STL
- JAX
1 stop5h 05m
Southwest
Mon 8/245:45 pm
JAX
- STL
1 stop4h 55m
Southwest
Deal found 5/26![Southwest logo]()
$255
This Kiwi.com deal was found by Cheapflights users on 5/24. 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 6/236:31 pm
STL
- JAX
1 stop22h 02m
Frontier
Tue 6/306:28 pm
JAX
- STL
1 stop15h 24m
Frontier
Deal found 5/24![Frontier logo]()
$256
This Kiwi.com deal was found by Cheapflights users on 5/25. 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 7/84:57 pm
STL
- JAX
1 stop23h 37m
Frontier
Fri 7/106:29 pm
JAX
- STL
1 stop15h 28m
Frontier
Deal found 5/25![Frontier logo]()
$261
This Southwest deal was found by Cheapflights users on 5/26. 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 7/294:00 pm
STL
- JAX
1 stop4h 45m
Southwest
Tue 8/45:25 pm
JAX
- STL
1 stop5h 15m
Southwest
Deal found 5/26![Southwest logo]()
$270
This Kiwi.com deal was found by Cheapflights users on 5/25. 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 7/224:57 pm
STL
- JAX
1 stop23h 37m
Frontier
Wed 7/296:29 pm
JAX
- STL
1 stop24h 08m
Frontier
Deal found 5/25![Frontier logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 5/25. 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 7/224:57 pm
STL
- JAX
1 stop23h 37m
Frontier
Sun 7/266:29 pm
JAX
- STL
1 stop15h 28m
Frontier
Deal found 5/25![Frontier logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 5/25. 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 6/295:06 pm
STL
- JAX
1 stop23h 27m
Frontier
Mon 7/66:29 pm
JAX
- STL
1 stop24h 08m
Frontier
Deal found 5/25![Frontier logo]()
$277
Best flights from St. Louis to JacksonvilleDiscover carefully curated flight deals from St. Louis to Jacksonville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 27, 2026.
Discover carefully curated flight deals from St. Louis to Jacksonville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 27, 2026.
This Delta deal was found by Cheapflights users on 5/26. 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.
Thu 7/96:00 am
STL
- JAX
1 stop3h 43m
Delta
Mon 7/137:09 pm
JAX
- STL
1 stop4h 06m
Delta
Deal found 5/26![Delta logo]()
$255
This Southwest deal was found by Cheapflights users on 5/24. 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.
Sat 9/55:45 am
STL
- JAX
2 stops8h 45m
Southwest
Sun 9/136:00 am
JAX
- STL
1 stop4h 00m
Southwest
Deal found 5/24![Southwest logo]()
$321
This United Airlines deal was found by Cheapflights users on 5/26. 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 7/237:20 am
STL
- JAX
1 stop6h 07m
United Airlines
Sun 7/267:20 am
JAX
- STL
1 stop5h 51m
United Airlines
Deal found 5/26![United Airlines logo]()
$325
This Delta deal was found by Cheapflights users on 5/22. 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.
Sun 11/17:20 am
STL
- JAX
1 stop6h 27m
Delta
Sat 11/79:57 am
JAX
- STL
1 stop3h 59m
Delta
Deal found 5/22![Delta logo]()
$317
This Southwest deal was found by Cheapflights users on 5/23. 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 7/175:50 am
STL
- JAX
1 stop6h 45m
Southwest
Sun 7/199:10 pm
JAX
- STL
1 stop3h 45m
Southwest
Deal found 5/23![Southwest logo]()
$325
This Delta deal was found by Cheapflights users on 5/25. 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.
Thu 9/36:00 am
STL
- JAX
1 stop4h 44m
Delta
Mon 9/712:51 pm
JAX
- STL
1 stop4h 26m
Delta
Deal found 5/25![Delta logo]()
$325
This Southwest deal was found by Cheapflights users on 5/25. 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 7/810:15 am
STL
- JAX
Nonstop2h 00m
Southwest
Fri 7/105:20 pm
JAX
- STL
1 stop6h 25m
Southwest
Deal found 5/25![Southwest logo]()
$326
This Southwest deal was found by Cheapflights users on 5/22. 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 8/282:05 pm
STL
- JAX
Nonstop2h 00m
Southwest
Mon 8/317:50 am
JAX
- STL
1 stop4h 45m
Southwest
Deal found 5/22![Southwest logo]()
$337
This Southwest deal was found by Cheapflights users on 5/24. 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 7/93:35 pm
STL
- JAX
Nonstop2h 00m
Southwest
Mon 7/135:20 pm
JAX
- STL
1 stop7h 35m
Southwest
Deal found 5/24![Southwest logo]()
$341
This Southwest deal was found by Cheapflights users on 5/23. 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.
Sat 10/1710:20 am
STL
- JAX
Nonstop1h 55m
Southwest
Mon 10/194:30 pm
JAX
- STL
1 stop6h 05m
Southwest
Deal found 5/23![Southwest logo]()
$341
Last-minute flights from St. Louis to JacksonvilleDiscover last-minute flight deals from St. Louis to Jacksonville. Data last updated May 27, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Jacksonville. Data last updated May 27, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 5/23. 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 6/175:06 pm
STL
- JAX
1 stop23h 27m
Frontier
Sun 6/216:28 pm
JAX
- STL
1 stop15h 24m
Frontier
Deal found 5/23![Frontier logo]()
$298
This Kiwi.com deal was found by Cheapflights users on 5/23. 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.
Sat 6/205:06 pm
STL
- JAX
1 stop23h 27m
Frontier
Sat 6/276:28 pm
JAX
- STL
1 stop24h 02m
Frontier
Deal found 5/23![Frontier logo]()
$287
This Southwest deal was found by Cheapflights users on 5/25. 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.
Sat 6/201:50 pm
STL
- JAX
1 stop9h 00m
Southwest
Tue 6/238:25 am
JAX
- STL
Nonstop2h 10m
Southwest
Deal found 5/25![Southwest logo]()
$305
This Kiwi.com deal was found by Cheapflights users on 5/22. 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 6/216:31 pm
STL
- JAX
1 stop22h 02m
Frontier
Sun 6/286:28 pm
JAX
- STL
1 stop15h 24m
Frontier
Deal found 5/22![Frontier logo]()
$303
This Kiwi.com deal was found by Cheapflights users on 5/24. 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 6/225:06 pm
STL
- JAX
1 stop23h 27m
Frontier
Sat 6/276:28 pm
JAX
- STL
1 stop24h 02m
Frontier
Deal found 5/24![Frontier logo]()
$304
This Kiwi.com deal was found by Cheapflights users on 5/24. 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 6/236:31 pm
STL
- JAX
1 stop22h 02m
Frontier
Tue 6/306:28 pm
JAX
- STL
1 stop15h 24m
Frontier
Deal found 5/24![Frontier logo]()
$256
This Southwest deal was found by Cheapflights users on 5/26. 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.
Tue 6/2310:15 am
STL
- JAX
Nonstop2h 00m
Southwest
Tue 6/308:25 am
JAX
- STL
Nonstop2h 10m
Southwest
Deal found 5/26![Southwest logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 5/25. 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 6/245:06 pm
STL
- JAX
1 stop23h 27m
Frontier
Sun 6/286:28 pm
JAX
- STL
1 stop15h 24m
Frontier
Deal found 5/25![Frontier logo]()
$272
This American Airlines deal was found by Cheapflights users on 5/26. 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 6/256:13 pm
STL
- JAX
1 stop4h 46m
American Airlines
Tue 6/306:28 pm
JAX
- STL
1 stop5h 29m
American Airlines
Deal found 5/26![American Airlines logo]()
$255
This Kiwi.com deal was found by Cheapflights users on 5/25. 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 6/295:06 pm
STL
- JAX
1 stop23h 27m
Frontier
Mon 7/66:29 pm
JAX
- STL
1 stop24h 08m
Frontier
Deal found 5/25![Frontier logo]()
$277
One-way flights from St. Louis to JacksonvilleSearch for one-way flight options from St. Louis to Jacksonville. Find affordable one-way fares based on user searches. Data last updated May 27, 2026.
Search for one-way flight options from St. Louis to Jacksonville. Find affordable one-way fares based on user searches. Data last updated May 27, 2026.
This American Airlines deal was found by Cheapflights users on 5/27. 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 7/252:35 pm
STL
- JAX
1 stop7h 17m
American Airlines
Deal found 5/27![American Airlines logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 5/26. 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 7/216:34 pm
STL
- JAX
1 stop22h 00m
Frontier
Deal found 5/26![Frontier logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 5/25. 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.
Sat 6/275:06 pm
STL
- JAX
1 stop23h 27m
Frontier
Deal found 5/25![Frontier logo]()
$131
This United Airlines deal was found by Cheapflights users on 5/26. 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.
Sat 8/228:00 am
STL
- JAX
2 stops8h 39m
United Airlines
Deal found 5/26![United Airlines logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 5/24. 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.
Sat 7/184:57 pm
STL
- JAX
1 stop23h 37m
Frontier
Deal found 5/24![Frontier logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 5/24. 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 6/146:31 pm
STL
- JAX
1 stop22h 02m
Frontier
Deal found 5/24![Frontier logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 5/24. 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 8/186:33 pm
STL
- JAX
1 stop22h 04m
Frontier
Deal found 5/24![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 5/26. 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 7/236:34 pm
STL
- JAX
1 stop22h 00m
Frontier
Deal found 5/26![Frontier logo]()
$141
This Southwest deal was found by Cheapflights users on 5/25. 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.
Tue 7/2110:15 am
STL
- JAX
Nonstop2h 00m
Southwest
Deal found 5/25![Southwest logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 5/26. 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 7/196:34 pm
STL
- JAX
1 stop22h 00m
Frontier
Deal found 5/26![Frontier logo]()
$151
This United Airlines deal was found by Cheapflights users on 5/22. 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 8/187:25 am
STL
- JAX
2 stops12h 29m
United Airlines
Deal found 5/22![United Airlines logo]()
$153
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 May 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $255 (Southwest) |
One-way from | $128 (American Airlines) |
Popular in | May |
Cheapest in | September |
Average price | $399 |
Good round-trip deal | $326 or less |
Good one-way deal | $218 or less |
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 May 27, 2026.
Use the filters below to find and compare flights from St. Louis to Jacksonville that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisJacksonville
STL - JAX
STLJAX
Lambert-St Louis
Thu 7/9
6:00 am-10:43 am
1 stop3h 43m
Jacksonville
Mon 7/13
7:09 pm-10:15 pm
1 stop4h 06m
$255
St. LouisJacksonville
STL - JAX
STLJAX
Lambert-St Louis
Sun 11/1
7:20 am-2:47 pm
1 stop6h 27m
Jacksonville
Sat 11/7
9:57 am-12:56 pm
1 stop3h 59m
$317
St. LouisJacksonville
STL - JAX
STLJAX
Lambert-St Louis
Sat 9/5
5:45 am-3:30 pm
2 stops8h 45m
Jacksonville
Sun 9/13
6:00 am-9:00 am
1 stop4h 00m
$321
St. LouisJacksonville
STL - JAX
STLJAX
Lambert-St Louis
Thu 7/23
7:20 am-2:27 pm
1 stop6h 07m
Jacksonville
Sun 7/26
7:20 am-12:11 pm
1 stop5h 51m
$325
St. LouisJacksonville
STL - JAX
STLJAX
Lambert-St Louis
Fri 7/17
5:50 am-1:35 pm
1 stop6h 45m
Jacksonville
Sun 7/19
9:10 pm-11:55 pm
1 stop3h 45m
$325
St. LouisJacksonville
STL - JAX
STLJAX
Lambert-St Louis
Thu 9/3
6:00 am-11:44 am
1 stop4h 44m
Jacksonville
Mon 9/7
12:51 pm-4:17 pm
1 stop4h 26m
$325
St. LouisJacksonville
STL - JAX
STLJAX
Lambert-St Louis
Wed 7/8
10:15 am-1:15 pm
Nonstop2h 00m
Jacksonville
Fri 7/10
5:20 pm-10:45 pm
1 stop6h 25m
$326
Quickest round-trip
St. LouisJacksonville
STL - JAX
STLJAX
Lambert-St Louis
Fri 8/28
2:05 pm-5:05 pm
Nonstop2h 00m
Jacksonville
Mon 8/31
7:50 am-11:35 am
1 stop4h 45m
$337
St. LouisJacksonville
STL - JAX
STLJAX
Lambert-St Louis
Thu 7/9
3:35 pm-6:35 pm
Nonstop2h 00m
Jacksonville
Mon 7/13
5:20 pm-11:55 pm
1 stop7h 35m
$341
St. LouisJacksonville
STL - JAX
STLJAX
Lambert-St Louis
Sat 10/17
10:20 am-1:15 pm
Nonstop1h 55m
Jacksonville
Mon 10/19
4:30 pm-9:35 pm
1 stop6h 05m
$341
Showing 1-10 of 20 resultsSorted by cheapest first
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 May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- 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 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 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.
STL-JAX
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?
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 75 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, September is the cheapest month in which you can book a flight from St. Louis to Jacksonville (average of $267). Flying from St. Louis to Jacksonville in May is currently the most expensive (average of $399). 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 May 27, 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 23% 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
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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 May 27, 2026.
Read through reviews of airlines operating flights from St. Louis to Jacksonville, such as Southwest,Delta, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Comfort
8.0
Overall
7.9
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Comfort
8.0
Overall
7.9
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Comfort
8.0
Overall
7.9
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Comfort
8.0
Overall
7.9
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Comfort
8.0
Overall
7.9
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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.
Traveling to a place near Jacksonville?
Book flights to Jacksonville if you plan to visit one of these locationsJacksonville Beach
Fernandina Beach
Orange Park
Kingsland
Waycross
Atlantic Beach
Yulee
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Top 4 airlines flying from St. Louis to Jacksonville
Discover the top 4 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 May 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$168 | Average$321 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$211 | Average$347 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$214 | Average$328 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$251 | Average$326 | FlexibilityNo cancel fee | On-time62% |