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Cheap flights from Jacksonville to St. Louis from $61

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Jacksonville to St. Louis departing on 2/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Jacksonville to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:45 am - 9:49 am
JAX
-
STL
25h 04m
2 stops
Multiple Airlines Logo
2:09 pm - 7:33 pm
STL
-
JAX
4h 24m
1 stop
$211Multiple Airlines
Fri, Mar 6 - Mon, Mar 9
Frontier Logo
8:18 pm - 10:30 am
JAX
-
STL
15h 12m
1 stop
Frontier Logo
4:54 pm - 4:33 pm
STL
-
JAX
22h 39m
2 stops
$244Frontier
Wed, Apr 1 - Wed, Apr 8
Frontier Logo
8:18 pm - 10:30 am
JAX
-
STL
15h 12m
1 stop
Frontier Logo
4:54 pm - 7:33 pm
STL
-
JAX
25h 39m
2 stops
$249Frontier
Wed, Apr 1 - Sun, Apr 5
Frontier Logo
9:04 pm - 6:51 am
JAX
-
STL
34h 47m
2 stops
Frontier Logo
3:49 pm - 6:31 pm
STL
-
JAX
25h 42m
2 stops
$272Frontier
Thu, Feb 5 - Tue, Feb 10
Frontier Logo
8:12 pm - 6:51 am
JAX
-
STL
11h 39m
1 stop
Frontier Logo
10:11 pm - 7:01 pm
STL
-
JAX
43h 50m
2 stops
$276Frontier
Fri, Feb 13 - Mon, Feb 16
Southwest Logo
6:25 am - 7:45 am
JAX
-
STL
2h 20mnonstop
Southwest Logo
7:45 pm - 10:45 pm
STL
-
JAX
2h 00mnonstop
$277Southwest
Tue, Mar 24 - Thu, Mar 26
American Airlines Logo
6:02 am - 10:59 am
JAX
-
STL
5h 57m
1 stop
American Airlines Logo
2:19 pm - 10:58 pm
STL
-
JAX
7h 39m
1 stop
$278American Airlines
Wed, Mar 18 - Mon, Mar 23
Southwest Logo
6:25 am - 7:45 am
JAX
-
STL
2h 20mnonstop
Southwest Logo
1:45 pm - 9:15 pm
STL
-
JAX
6h 30m
1 stop
$279Southwest
Wed, Apr 1 - Wed, Apr 8
Multiple Airlines Logo
11:37 am - 11:33 pm
JAX
-
STL
36h 56m
2 stops
Multiple Airlines Logo
8:22 pm - 4:23 pm
STL
-
JAX
19h 01m
1 stop
$281Multiple Airlines
Tue, Feb 3 - Fri, Feb 6
Frontier Logo
4:39 pm - 1:19 pm
JAX
-
STL
21h 40m
1 stop
Frontier Logo
9:05 pm - 5:08 pm
STL
-
JAX
19h 03m
2 stops
$283Frontier
Sun, Mar 8 - Thu, Mar 12

Frontier flights from Jacksonville to St. Louis

Our best Frontier deals on Jacksonville to St. Louis flight tickets
Frontier
Apr 1
JAX8:18 pmJacksonville
15h 12m
1 stop
STL10:30 amLambert-St Louis
Apr 8
STL4:54 pmLambert-St Louis
22h 39m
2 stops
JAX4:33 pmJacksonville
$244
Frontier
Apr 1
JAX8:18 pmJacksonville
15h 12m
1 stop
STL10:30 amLambert-St Louis
Apr 5
STL4:54 pmLambert-St Louis
25h 39m
2 stops
JAX7:33 pmJacksonville
$249
Frontier
Feb 5
JAX9:04 pmJacksonville
34h 47m
2 stops
STL6:51 amLambert-St Louis
Feb 10
STL3:49 pmLambert-St Louis
25h 42m
2 stops
JAX6:31 pmJacksonville
$272

Southwest flights from Jacksonville to St. Louis

Our best Southwest deals on Jacksonville to St. Louis flight tickets
Southwest
Mar 24
JAX6:25 amJacksonville
2h 20m
STL7:45 amLambert-St Louis
Mar 26
STL7:45 pmLambert-St Louis
2h 00m
JAX10:45 pmJacksonville
$277
Southwest
Apr 1
JAX6:25 amJacksonville
2h 20m
STL7:45 amLambert-St Louis
Apr 8
STL1:45 pmLambert-St Louis
6h 30m
1 stop
JAX9:15 pmJacksonville
$279
Southwest
Mar 18
JAX3:40 pmJacksonville
6h 45m
1 stop
STL9:25 pmLambert-St Louis
Mar 23
STL7:45 pmLambert-St Louis
2h 00m
JAX10:45 pmJacksonville
$287

momondo 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, momondo users made 832,500 searches. Data last updated January 29, 2026.
Use the filters below to find and compare flights from Jacksonville to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Fri 3/6

9:45 am-9:49 am

2 stops25h 04m

Lambert-St Louis

Mon 3/9

2:09 pm-7:33 pm

1 stop4h 24m

$211

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Wed 4/1

8:18 pm-10:30 am

1 stop15h 12m

Lambert-St Louis

Wed 4/8

4:54 pm-4:33 pm

2 stops22h 39m

$244

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Wed 4/1

8:18 pm-10:30 am

1 stop15h 12m

Lambert-St Louis

Sun 4/5

4:54 pm-7:33 pm

2 stops25h 39m

$249

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Thu 2/5

9:04 pm-6:51 am

2 stops34h 47m

Lambert-St Louis

Tue 2/10

3:49 pm-6:31 pm

2 stops25h 42m

$272

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Fri 2/13

8:12 pm-6:51 am

1 stop11h 39m

Lambert-St Louis

Mon 2/16

10:11 pm-7:01 pm

2 stops43h 50m

$276

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Tue 3/24

6:25 am-7:45 am

Nonstop2h 20m

Lambert-St Louis

Thu 3/26

7:45 pm-10:45 pm

Nonstop2h 00m

$277

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Wed 3/18

6:02 am-10:59 am

1 stop5h 57m

Lambert-St Louis

Mon 3/23

2:19 pm-10:58 pm

1 stop7h 39m

$278

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Wed 4/1

6:25 am-7:45 am

Nonstop2h 20m

Lambert-St Louis

Wed 4/8

1:45 pm-9:15 pm

1 stop6h 30m

$279

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Tue 2/3

11:37 am-11:33 pm

2 stops36h 56m

Lambert-St Louis

Fri 2/6

8:22 pm-4:23 pm

1 stop19h 01m

$281

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Sun 3/8

4:39 pm-1:19 pm

1 stop21h 40m

Lambert-St Louis

Thu 3/12

9:05 pm-5:08 pm

2 stops19h 03m

$283

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Jacksonville to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to St. Louis?

In general, July is the cheapest month to fly from Jacksonville to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $250. The month of August is another great option to travel to St. Louis, with average flight prices from Jacksonville averaging around $254.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Tuesday when prices can be found for as low as $333. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $441. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Jacksonville in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $347 when looking at flights departing in the afternoon. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $388 per ticket.

What is the cheapest Jacksonville to Lambert-St Louis flight route?

Fly from Jacksonville to Lambert-St Louis for the best Jacksonville - Lambert-St Louis flight prices

How far in advance should I book a flight to St. Louis?

You are more likely to see cheaper flights to St. Louis from Jacksonville when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $318 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Jacksonville for as low as $218 on momondo.

What cabin class options are available on Jacksonville to Lambert-St Louis flights?

There is only 1 cabin class available to choose from on Jacksonville to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Jacksonville to St. Louis flights?

You could potentially save up to 2% on your flight if you consider stops on a Jacksonville to St. Louis flight.

How have Jacksonville to St. Louis flight prices changed over time?

As of January 2026, prices for Jacksonville to St. Louis flights are approximately 24% more expensive when compared to flights at the same time last year.

When to book flights from Jacksonville to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Jacksonville to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Jacksonville to St. Louis (JAX to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Jacksonville to St. Louis

Best Price Found

$322

Fastest flight time

2h 20m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Jacksonville in the past 72 hours is $322. The best round-trip flight deal from Jacksonville to St. Louis found on momondo in the last 72 hours is $347.
The fastest flight from Jacksonville to St. Louis takes 2h 20m
Direct flights go from Jacksonville to St. Louis every day.
There is 1 airport in St. Louis. From Jacksonville there are direct flights to Lambert-St Louis (STL).
Search flight deals

  • How far is Jacksonville to Lambert-St Louis by plane?

    A flight from Jacksonville to Lambert-St Louis will travel around 750.5 mi. A reasonable flight in good conditions will take 2h 20m.

  • When did momondo last update prices for flights from Jacksonville Airport to Lambert-St Louis Airport?

    Prices for flights from Jacksonville Airport to Lambert-St Louis Airport were last updated today.

  • How many operators does momondo search for flights from Jacksonville Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Jacksonville Airport to Lambert-St Louis Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Jacksonville Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Jacksonville to St. Louis?

  • What is the most popular airline from Jacksonville to St. Louis?

Best airlines flying from Jacksonville to St. Louis

Compare and see reviews for airlines that fly from Jacksonville to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $176Free CancellationRating
7.9
8,128 reviews
Search Delta flights
SouthwestPriceFrom $214Free CancellationRating
8.0
4,267 reviews
Search Southwest flights
American AirlinesPriceFrom $218Free CancellationRating
7.2
11,205 reviews
Search American Airlines flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
Florissant
O'Fallon
Collinsville
Fenton
St. Peters
Wentzville
Alton
Farmington
Clayton
Edwardsville
Eureka
Festus
Glencoe
Litchfield
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Jacksonville to St. Louis?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Jacksonville to St. Louis. momondo saves you time and could save you money on your trip.

Can I find flights from Jacksonville to St. Louis with flexible booking policies on momondo?

momondo does allow users to show only those flights to St. Louis from Jacksonville which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Jacksonville to St. Louis?

Once you have performed a search for Jacksonville to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Jacksonville to St. Louis right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Jacksonville to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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