$66+ 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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — JAX
Mar 13 — Mar 201
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 October or September, booked 76 days in advance, depart on a Friday or Thursday 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 February 11, 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 February 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/61:09 pm
STL
- JAX
1 stop4h 30m
Frontier
Sun 3/84:39 pm
JAX
- STL
1 stop21h 40m
Frontier
Deal found 2/9![Frontier logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1111:32 am
STL
- JAX
1 stop7h 01m
Frontier
Sun 3/154:29 pm
JAX
- STL
1 stop22h 05m
Frontier
Deal found 2/10![Frontier logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 4/178:13 pm
STL
- JAX
1 stop17h 00m
Frontier
Sun 4/266:08 pm
JAX
- STL
1 stop13h 42m
Frontier
Deal found 2/9![Frontier logo]()
$193
This Kiwi.com deal was found by Cheapflights users on 2/8. 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.
Sat 3/78:12 pm
STL
- JAX
2 stops17h 21m
Frontier
Thu 3/124:29 pm
JAX
- STL
1 stop22h 05m
Frontier
Deal found 2/8![Frontier logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 5/28:13 pm
STL
- JAX
1 stop20h 00m
Frontier
Thu 5/76:08 pm
JAX
- STL
1 stop13h 42m
Frontier
Deal found 2/10![Frontier logo]()
$204
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 3/244:51 pm
STL
- JAX
2 stops25h 42m
Frontier
Mon 3/308:18 pm
JAX
- STL
1 stop15h 14m
Frontier
Deal found 2/8![Frontier logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/61:09 pm
STL
- JAX
1 stop4h 30m
Multiple Airlines
Sun 3/85:51 pm
JAX
- STL
2 stops20h 28m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 4/248:13 pm
STL
- JAX
1 stop17h 00m
Frontier
Sun 5/36:08 pm
JAX
- STL
1 stop13h 42m
Frontier
Deal found 2/9![Frontier logo]()
$232
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 3/268:06 pm
STL
- JAX
2 stops22h 30m
Frontier
Mon 3/308:18 pm
JAX
- STL
1 stop15h 14m
Frontier
Deal found 2/10![Frontier logo]()
$237
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 February 11, 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 February 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/61:09 pm
STL
- JAX
1 stop4h 30m
Frontier
Sun 3/84:39 pm
JAX
- STL
1 stop21h 40m
Frontier
Deal found 2/9![Frontier logo]()
$138
This Southwest deal was found by Cheapflights users on 2/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/241:45 pm
STL
- JAX
1 stop7h 20m
Southwest
Tue 4/288:20 am
JAX
- STL
Nonstop2h 15m
Southwest
Deal found 2/8![Southwest logo]()
$288
This Delta deal was found by Cheapflights users on 2/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:50 pm
STL
- JAX
1 stop4h 09m
Delta
Fri 5/88:21 pm
JAX
- STL
1 stop4h 38m
Delta
Deal found 2/8![Delta logo]()
$299
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 3/268:06 pm
STL
- JAX
2 stops22h 30m
Frontier
Mon 3/308:18 pm
JAX
- STL
1 stop15h 14m
Frontier
Deal found 2/9![Frontier logo]()
$237
This Southwest deal was found by Cheapflights users on 2/10. 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 3/267:45 pm
STL
- JAX
Nonstop2h 00m
Southwest
Mon 3/306:15 am
JAX
- STL
Nonstop2h 20m
Southwest
Deal found 2/10![Southwest logo]()
$291
This Southwest deal was found by Cheapflights users on 2/10. 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 5/25:05 pm
STL
- JAX
Nonstop2h 00m
Southwest
Thu 5/73:35 pm
JAX
- STL
Nonstop2h 15m
Southwest
Deal found 2/10![Southwest logo]()
$291
This Southwest deal was found by Cheapflights users on 2/10. 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 4/95:00 am
STL
- JAX
1 stop10h 20m
Southwest
Tue 4/218:20 am
JAX
- STL
Nonstop2h 15m
Southwest
Deal found 2/10![Southwest logo]()
$294
This Southwest deal was found by Cheapflights users on 2/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/710:15 am
STL
- JAX
Nonstop2h 00m
Southwest
Thu 3/126:40 am
JAX
- STL
1 stop6h 50m
Southwest
Deal found 2/8![Southwest logo]()
$295
This Southwest deal was found by Cheapflights users on 2/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/241:45 pm
STL
- JAX
1 stop7h 20m
Southwest
Wed 4/294:05 pm
JAX
- STL
1 stop6h 05m
Southwest
Deal found 2/8![Southwest logo]()
$298
Last-minute flights from St. Louis to JacksonvilleDiscover last-minute flight deals from St. Louis to Jacksonville. Data last updated February 11, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Jacksonville. Data last updated February 11, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/61:09 pm
STL
- JAX
1 stop4h 30m
Frontier
Sun 3/84:39 pm
JAX
- STL
1 stop21h 40m
Frontier
Deal found 2/9![Frontier logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/61:09 pm
STL
- JAX
1 stop4h 30m
Multiple Airlines
Sun 3/85:51 pm
JAX
- STL
2 stops20h 28m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 2/8. 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.
Sat 3/78:12 pm
STL
- JAX
2 stops17h 21m
Frontier
Thu 3/124:29 pm
JAX
- STL
1 stop22h 05m
Frontier
Deal found 2/8![Frontier logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 2/8. 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.
Sun 3/87:52 am
STL
- JAX
2 stops34h 41m
Frontier
Sun 3/154:29 pm
JAX
- STL
1 stop22h 05m
Frontier
Deal found 2/8![Frontier logo]()
$250
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 3/87:52 am
STL
- JAX
2 stops34h 41m
Frontier
Thu 3/124:29 pm
JAX
- STL
1 stop22h 05m
Frontier
Deal found 2/9![Frontier logo]()
$259
This Kiwi.com deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1111:32 am
STL
- JAX
1 stop7h 01m
Frontier
Sun 3/154:29 pm
JAX
- STL
1 stop22h 05m
Frontier
Deal found 2/10![Frontier logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 3/244:51 pm
STL
- JAX
2 stops25h 42m
Frontier
Mon 3/308:18 pm
JAX
- STL
1 stop15h 14m
Frontier
Deal found 2/8![Frontier logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 3/268:06 pm
STL
- JAX
2 stops22h 30m
Frontier
Mon 3/308:18 pm
JAX
- STL
1 stop15h 14m
Frontier
Deal found 2/10![Frontier logo]()
$237
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 February 11, 2026.
Search for one-way flight options from St. Louis to Jacksonville. Find affordable one-way fares based on user searches. Data last updated February 11, 2026.
This WAYA deal was found by Cheapflights users on 2/9. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/92:09 pm
STL
- JAX
1 stop4h 24m
Frontier
Deal found 2/9![Frontier logo]()
$66
This Kiwi.com deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1111:32 am
STL
- JAX
1 stop7h 01m
Frontier
Deal found 2/9![Frontier logo]()
$68
This WAYA deal was found by Cheapflights users on 2/8. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/61:09 pm
STL
- JAX
1 stop4h 30m
Frontier
Deal found 2/8![Frontier logo]()
$71
This Trip.com deal was found by Cheapflights users on 2/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/208:20 pm
STL
- JAX
1 stop21h 21m
Frontier
Deal found 2/9![Frontier logo]()
$73
This Priceline deal was found by Cheapflights users on 2/8. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/711:21 am
STL
- JAX
1 stop4h 52m
Frontier
Deal found 2/8![Frontier logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 5/68:13 pm
STL
- JAX
1 stop20h 00m
Frontier
Deal found 2/10![Frontier logo]()
$89
This Delta deal was found by Cheapflights users on 2/9. 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 3/77:10 am
STL
- JAX
1 stop4h 16m
Delta
Deal found 2/9![Delta logo]()
$91
This Trip.com deal was found by Cheapflights users on 2/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/188:13 pm
STL
- JAX
1 stop20h 00m
Frontier
Deal found 2/9![Frontier logo]()
$93
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 3/33:49 pm
STL
- JAX
2 stops26h 12m
Frontier
Deal found 2/8![Frontier logo]()
$100
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 February 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $138 (Kiwi.com) |
One-way from | $66 (WAYA) |
Popular in | November |
Cheapest in | October |
Average price | $350 |
Good round-trip deal | $324 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 February 11, 2026.
Use the filters below to find and compare flights from St. Louis to Jacksonville that are best for you.
Fly from
St. Louis
Fly to
Jacksonville
Route
Depart
Return
Price
St. LouisJacksonville
STL - JAX
STLJAX
Lambert-St Louis
Fri 3/6
1:09 pm-6:39 pm
1 stop4h 30m
Jacksonville
Sun 3/8
4:39 pm-1:19 pm
1 stop21h 40m
$138
St. LouisJacksonville
STL - JAX
STLJAX
Lambert-St Louis
Thu 3/26
8:06 pm-7:36 pm
2 stops22h 30m
Jacksonville
Mon 3/30
8:18 pm-10:32 am
1 stop15h 14m
$237
St. LouisJacksonville
STL - JAX
STLJAX
Lambert-St Louis
Fri 4/24
1:45 pm-10:05 pm
1 stop7h 20m
Jacksonville
Tue 4/28
8:20 am-9:35 am
Nonstop2h 15m
$288
St. LouisJacksonville
STL - JAX
STLJAX
Lambert-St Louis
Thu 3/26
7:45 pm-10:45 pm
Nonstop2h 00m
Jacksonville
Mon 3/30
6:15 am-7:35 am
Nonstop2h 20m
$291
St. LouisJacksonville
STL - JAX
STLJAX
Lambert-St Louis
Sat 5/2
5:05 pm-8:05 pm
Nonstop2h 00m
Jacksonville
Thu 5/7
3:35 pm-4:50 pm
Nonstop2h 15m
$291
St. LouisJacksonville
STL - JAX
STLJAX
Lambert-St Louis
Thu 4/9
5:00 am-4:20 pm
1 stop10h 20m
Jacksonville
Tue 4/21
8:20 am-9:35 am
Nonstop2h 15m
$294
St. LouisJacksonville
STL - JAX
STLJAX
Lambert-St Louis
Sat 3/7
10:15 am-1:15 pm
Nonstop2h 00m
Jacksonville
Thu 3/12
6:40 am-12:30 pm
1 stop6h 50m
$295
St. LouisJacksonville
STL - JAX
STLJAX
Lambert-St Louis
Fri 4/24
1:45 pm-10:05 pm
1 stop7h 20m
Jacksonville
Wed 4/29
4:05 pm-9:10 pm
1 stop6h 05m
$298
St. LouisJacksonville
STL - JAX
STLJAX
Lambert-St Louis
Fri 5/1
6:50 pm-11:59 pm
1 stop4h 09m
Jacksonville
Fri 5/8
8:21 pm-11:59 pm
1 stop4h 38m
$299
St. LouisJacksonville
STL - JAX
STLJAX
Lambert-St Louis
Fri 2/20
8:20 pm-6:41 pm
1 stop21h 21m
$73
Showing 1-10 of 20 results
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 February.
| 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 |
- 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?
Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Jacksonville. Price data was last updated on February 6, 2026.
The price you pay for your flight from St. Louis to Jacksonville may vary depending on when you book. For the best chance of a lower fare, look to book 76 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from St. Louis to Jacksonville?
Currently, October is the cheapest month in which you can book a flight from St. Louis to Jacksonville (average of $155). Flying from St. Louis to Jacksonville in February is currently the most expensive (average of $258). 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 February 11, 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
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 February 11, 2026.
Read through reviews of airlines operating flights from St. Louis to Jacksonville, such as Southwest, Delta, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Crew
8.6
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$176 | Average$302 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$186 | Average$302 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$214 | Average$317 | FlexibilityNo cancel fee | On-time63% |