$47+ Cheap flights from St. Louis to Jacksonville (STL - JAX)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
STL — JAX
Oct 17 — Oct 241
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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 October or August, booked 53 days in advance, depart on a Friday or Thursday and return on a Wednesday
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 September 17, 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 September 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/72:29 pm -
1 stop25h 56m
Tue 10/137:46 pm -
1 stop22h 54m
Deal found 9/15![Frontier logo]()
$88
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 10/196:35 pm -
1 stop23h 11m
Tue 10/277:03 pm -
1 stop23h 37m
Deal found 9/16![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 10/166:35 pm -
1 stop23h 11m
Tue 10/277:03 pm -
1 stop23h 37m
Deal found 9/16![Frontier logo]()
$96
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/72:29 pm -
1 stop25h 56m
Thu 10/156:20 pm -
1 stop24h 20m
Deal found 9/15![Frontier logo]()
$106
This Kiwi.com deal was found by Cheapflights users on 9/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/96:35 pm -
1 stop23h 11m
Tue 10/137:46 pm -
1 stop22h 54m
Deal found 9/12![Frontier logo]()
$112
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 10/216:35 pm -
1 stop21h 50m
Sun 10/256:20 pm -
1 stop24h 20m
Deal found 9/16![Frontier logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 10/196:35 pm -
1 stop23h 11m
Sun 10/256:20 pm -
1 stop24h 20m
Deal found 9/16![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/72:29 pm -
2 stops17h 01m
Tue 10/137:46 pm -
1 stop22h 54m
Deal found 9/15![Multiple Airlines logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 10/166:35 pm -
1 stop23h 11m
Sun 10/256:20 pm -
1 stop24h 20m
Deal found 9/16![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/96:35 pm -
1 stop23h 11m
Thu 10/156:20 pm -
1 stop24h 20m
Deal found 9/15![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 10/196:35 pm -
1 stop23h 11m
Thu 10/299:08 pm -
2 stops21h 32m
Deal found 9/16![Multiple Airlines logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/72:29 pm -
2 stops17h 01m
Thu 10/156:20 pm -
1 stop24h 20m
Deal found 9/15![Multiple Airlines logo]()
$173
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 September 17, 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 September 17, 2026.
This Southwest deal was found by Cheapflights users on 9/14. 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.
Sat 12/125:45 am -
2 stops8h 50m
Tue 12/153:45 pm -
2 stops7h 10m
Deal found 9/14![Southwest logo]()
$257
This Delta deal was found by Cheapflights users on 9/15. 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 10/67:20 pm -
1 stop3h 36m
Tue 10/135:10 am -
1 stop4h 59m
Deal found 9/15![Delta logo]()
$263
This United Airlines deal was found by Cheapflights users on 9/16. 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 10/217:30 am -
1 stop6h 06m
Tue 10/276:10 am -
2 stops12h 59m
Deal found 9/16![United Airlines logo]()
$324
This Delta deal was found by Cheapflights users on 9/15. 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 10/66:00 am -
1 stop6h 22m
Thu 10/155:10 am -
1 stop4h 59m
Deal found 9/15![Delta logo]()
$274
This Southwest deal was found by Cheapflights users on 9/16. 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 10/97:55 pm -
Nonstop2h 00m
Sat 10/101:20 pm -
1 stop7h 40m
Deal found 9/16![Southwest logo]()
$298
This Delta deal was found by Cheapflights users on 9/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1010:47 am -
1 stop4h 56m
Wed 10/147:18 am -
1 stop4h 33m
Deal found 9/13![Delta logo]()
$275
This Southwest deal was found by Cheapflights users on 9/16. 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 10/212:10 pm -
1 stop4h 35m
Sun 10/255:55 am -
Nonstop2h 10m
Deal found 9/16![Southwest logo]()
$313
This Delta deal was found by Cheapflights users on 9/16. 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.
Mon 10/195:35 pm -
1 stop5h 21m
Thu 10/228:09 pm -
1 stop4h 45m
Deal found 9/16![Delta logo]()
$285
This Southwest deal was found by Cheapflights users on 9/14. 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.
Sat 10/1710:05 am -
2 stops9h 00m
Mon 10/198:45 pm -
1 stop3h 55m
Deal found 9/14![Southwest logo]()
$326
This Southwest deal was found by Cheapflights users on 9/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/17:55 pm -
Nonstop1h 55m
Wed 11/44:55 pm -
1 stop5h 15m
Deal found 9/12![Southwest logo]()
$331
This Delta deal was found by Cheapflights users on 9/15. 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.
Mon 10/122:25 pm -
1 stop3h 39m
Wed 10/146:10 am -
1 stop3h 59m
Deal found 9/15![Delta logo]()
$335
This Southwest deal was found by Cheapflights users on 9/16. 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 10/167:55 pm -
Nonstop2h 00m
Sun 10/255:55 am -
Nonstop2h 10m
Deal found 9/16![Southwest logo]()
$352
Last-minute flights from St. Louis to JacksonvilleDiscover last-minute flight deals from St. Louis to Jacksonville. Data last updated September 17, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Jacksonville. Data last updated September 17, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/72:29 pm -
1 stop25h 56m
Tue 10/137:46 pm -
1 stop22h 54m
Deal found 9/15![Frontier logo]()
$88
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/72:29 pm -
1 stop25h 56m
Thu 10/156:20 pm -
1 stop24h 20m
Deal found 9/15![Frontier logo]()
$106
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/72:29 pm -
2 stops17h 01m
Tue 10/137:46 pm -
1 stop22h 54m
Deal found 9/15![Multiple Airlines logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/72:29 pm -
2 stops17h 01m
Thu 10/156:20 pm -
1 stop24h 20m
Deal found 9/15![Multiple Airlines logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 9/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/96:35 pm -
1 stop23h 11m
Tue 10/137:46 pm -
1 stop22h 54m
Deal found 9/12![Frontier logo]()
$112
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/96:35 pm -
1 stop23h 11m
Thu 10/156:20 pm -
1 stop24h 20m
Deal found 9/15![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 10/166:35 pm -
1 stop23h 11m
Tue 10/277:03 pm -
1 stop23h 37m
Deal found 9/16![Frontier logo]()
$96
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 10/166:35 pm -
1 stop23h 11m
Sun 10/256:20 pm -
1 stop24h 20m
Deal found 9/16![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 10/196:35 pm -
1 stop23h 11m
Tue 10/277:03 pm -
1 stop23h 37m
Deal found 9/16![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 10/196:35 pm -
1 stop23h 11m
Sun 10/256:20 pm -
1 stop24h 20m
Deal found 9/16![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 10/196:35 pm -
1 stop23h 11m
Thu 10/299:08 pm -
2 stops21h 32m
Deal found 9/16![Multiple Airlines logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 10/216:35 pm -
1 stop21h 50m
Sun 10/256:20 pm -
1 stop24h 20m
Deal found 9/16![Frontier logo]()
$151
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 September 17, 2026.
Search for one-way flight options from St. Louis to Jacksonville. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/146:35 pm -
1 stop21h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$47
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 11/116:44 pm -
1 stop22h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$48
This Kiwi.com deal was found by Cheapflights users on 9/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/96:44 pm -
1 stop22h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Frontier logo]()
$50
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/166:35 pm -
1 stop23h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$54
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/136:44 pm -
1 stop22h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Frontier logo]()
$55
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 11/186:44 pm -
1 stop22h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$59
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/142:59 pm -
1 stop28h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Frontier logo]()
$66
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 September 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $88 (Kiwi.com) |
One-way from | $47 (Kiwi.com) |
Popular in | September |
Cheapest in | October |
Average price | $454 |
Good round-trip deal | $327 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 7,457,451 searches. Data last updated September 17, 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 Lambert-St Louis - JAX Jacksonville
STLJAX
Lambert-St Louis
Tue 10/13
12:15 pm-5:30 pm
1 stop4h 15m
Jacksonville
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$126
Quickest round-trip
St. LouisJacksonville
STL Lambert-St Louis - JAX Jacksonville
STLJAX
Lambert-St Louis
Wed 10/7
10:20 am-1:20 pm
Nonstop2h 00m
Jacksonville
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$129
St. LouisJacksonville
STL Lambert-St Louis - JAX Jacksonville
STLJAX
Lambert-St Louis
Sat 10/10
10:15 am-1:15 pm
Nonstop2h 00m
Jacksonville
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$129
St. LouisJacksonville
STL Lambert-St Louis - JAX Jacksonville
STLJAX
Lambert-St Louis
Tue 10/13
10:14 am-4:43 pm
1 stop5h 29m
Jacksonville
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$132
St. LouisJacksonville
STL Lambert-St Louis - JAX Jacksonville
STLJAX
Lambert-St Louis
Tue 12/15
6:00 am-11:54 am
1 stop4h 54m
Jacksonville
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$138
St. LouisJacksonville
STL Lambert-St Louis - JAX Jacksonville
STLJAX
Lambert-St Louis
Sat 12/12
5:15 am-4:23 pm
2 stops10h 08m
Jacksonville
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$143
St. LouisJacksonville
STL Lambert-St Louis - JAX Jacksonville
STLJAX
Lambert-St Louis
Sat 10/17
5:38 pm-11:56 pm
1 stop5h 18m
Jacksonville
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$143
St. LouisJacksonville
STL Lambert-St Louis - JAX Jacksonville
STLJAX
Lambert-St Louis
Sat 11/14
6:00 am-11:54 am
1 stop4h 54m
Jacksonville
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$148
St. LouisJacksonville
STL Lambert-St Louis - JAX Jacksonville
STLJAX
Lambert-St Louis
Thu 11/12
5:30 pm-11:53 pm
1 stop5h 23m
Jacksonville
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$148
St. LouisJacksonville
STL Lambert-St Louis - JAX Jacksonville
STLJAX
Lambert-St Louis
Fri 10/16
1:30 pm-6:46 pm
2 stops28h 16m
Jacksonville
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$152
Showing 1-10 of 24 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 September.
| 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 52 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 $297). Flying from St. Louis to Jacksonville in September is currently the most expensive (average of $454). 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 September 17, 2026.
A simple way to save on the total cost of your ticket is to fly from St. Louis to Jacksonville at noon. If you’re flexible enough to do this you can expect to save up to 6% on your trip compared to booking a flight in the evening.
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
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 September 17, 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.
Overall
8.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Overall
8.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Overall
8.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Overall
8.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Overall
8.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
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
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.
Alternative routes
Complete your trip
Flights by cabin class
Jacksonville flight routes
Other flight options
Other flights from St. Louis
Popular flights
Alternative routes for St. Louis to Jacksonville
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Jacksonville by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Jacksonville by cabin class
Find flights from St. Louis to Jacksonville, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Jacksonville
Explore flights to Jacksonville departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 17, 2026.
St. Louis and Jacksonville flights
Browse other St. Louis and Jacksonville flight options. Last updated on September 17, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on September 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 7,457,451 searches. Data last updated September 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$182 | Average$350 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$251 | Average$390 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$254 | Average$356 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$294 | Average$356 | FlexibilityNo cancel fee | On-time71% |