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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.
1 adult
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
8:18 pm - 10:30 am
JAX
-
STL
15h 12m
1 stop
Multiple Airlines Logo
4:54 pm - 4:33 pm
STL
-
JAX
22h 39m
2 stops
$193Multiple Airlines
Wed, Apr 1 - Wed, Apr 8
Frontier Logo
7:24 pm - 10:27 pm
JAX
-
STL
28h 03m
2 stops
Frontier Logo
8:22 pm - 6:27 pm
STL
-
JAX
21h 05m
1 stop
$216Frontier
Mon, Feb 23 - Fri, Feb 27
Frontier Logo
7:18 pm - 6:51 am
JAX
-
STL
12h 33m
1 stop
Frontier Logo
9:45 pm - 6:31 pm
STL
-
JAX
43h 46m
2 stops
$230Frontier
Fri, Feb 6 - Mon, Feb 9
United Airlines Logo
5:31 pm - 10:14 pm
JAX
-
STL
5h 43m
1 stop
United Airlines Logo
7:00 am - 3:37 pm
STL
-
JAX
7h 37m
1 stop
$257United Airlines
Wed, Feb 18 - Wed, Feb 25
United Airlines Logo
5:31 pm - 10:14 pm
JAX
-
STL
5h 43m
1 stop
United Airlines Logo
9:55 am - 8:14 pm
STL
-
JAX
9h 19m
2 stops
$262United Airlines
Wed, Feb 18 - Wed, Feb 25
Frontier Logo
7:18 pm - 6:51 am
JAX
-
STL
12h 33m
1 stop
Frontier Logo
5:42 pm - 6:13 pm
STL
-
JAX
23h 31m
2 stops
$264Frontier
Fri, Feb 6 - Sun, Feb 8
Southwest Logo
6:35 pm - 7:55 pm
JAX
-
STL
2h 20mnonstop
Southwest Logo
7:15 pm - 10:15 pm
STL
-
JAX
2h 00mnonstop
$277Southwest
Sat, Feb 28 - Tue, Mar 10
Delta Logo
5:58 pm - 11:36 pm
JAX
-
STL
6h 38m
1 stop
Delta Logo
7:10 am - 2:56 pm
STL
-
JAX
6h 46m
1 stop
$278Delta
Tue, Feb 17 - Thu, Feb 19
Southwest Logo
6:25 am - 7:45 am
JAX
-
STL
2h 20mnonstop
Southwest Logo
3:55 pm - 9:15 pm
STL
-
JAX
4h 20m
1 stop
$279Southwest
Wed, Apr 1 - Wed, Apr 8
United Airlines Logo
6:42 pm - 11:59 pm
JAX
-
STL
6h 17m
1 stop
United Airlines Logo
10:00 am - 8:04 pm
STL
-
JAX
9h 04m
2 stops
$283United Airlines
Sat, Feb 28 - Tue, Mar 10

Frontier flights from Jacksonville to St. Louis

Our best Frontier deals on Jacksonville to St. Louis flight tickets
Frontier
Feb 23
JAX7:24 pmJacksonville
28h 03m
2 stops
STL10:27 pmLambert-St Louis
Feb 27
STL8:22 pmLambert-St Louis
21h 05m
1 stop
JAX6:27 pmJacksonville
$216
Frontier
Feb 6
JAX7:18 pmJacksonville
12h 33m
1 stop
STL6:51 amLambert-St Louis
Feb 9
STL9:45 pmLambert-St Louis
43h 46m
2 stops
JAX6:31 pmJacksonville
$230
Frontier
Jan 30
JAX7:18 pmJacksonville
12h 33m
1 stop
STL6:51 amLambert-St Louis
Feb 1
STL5:42 pmLambert-St Louis
23h 41m
2 stops
JAX6:23 pmJacksonville
$250

American Airlines flights from Jacksonville to St. Louis

Our best American Airlines deals on Jacksonville to St. Louis flight tickets
American Airlines
Feb 17
JAX6:02 amJacksonville
5h 59m
1 stop
STL11:01 amLambert-St Louis
Feb 24
STL6:06 amLambert-St Louis
6h 43m
1 stop
JAX1:49 pmJacksonville
$297
American Airlines
Feb 6
JAX2:37 pmJacksonville
8h 14m
1 stop
STL9:51 pmLambert-St Louis
Feb 9
STL3:54 pmLambert-St Louis
5h 15m
1 stop
JAX10:09 pmJacksonville
$330
American Airlines
Mar 27
JAX6:00 amJacksonville
5h 32m
1 stop
STL10:32 amLambert-St Louis
Mar 31
STL7:05 amLambert-St Louis
7h 05m
1 stop
JAX3:10 pmJacksonville
$333

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 21, 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

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

$193

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Mon 2/23

7:24 pm-10:27 pm

2 stops28h 03m

Lambert-St Louis

Fri 2/27

8:22 pm-6:27 pm

1 stop21h 05m

$216

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Fri 2/6

7:18 pm-6:51 am

1 stop12h 33m

Lambert-St Louis

Mon 2/9

9:45 pm-6:31 pm

2 stops43h 46m

$230

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Wed 2/18

5:31 pm-10:14 pm

1 stop5h 43m

Lambert-St Louis

Wed 2/25

7:00 am-3:37 pm

1 stop7h 37m

$257

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Wed 2/18

5:31 pm-10:14 pm

1 stop5h 43m

Lambert-St Louis

Wed 2/25

9:55 am-8:14 pm

2 stops9h 19m

$262

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Fri 2/6

7:18 pm-6:51 am

1 stop12h 33m

Lambert-St Louis

Sun 2/8

5:42 pm-6:13 pm

2 stops23h 31m

$264

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Sat 2/28

6:35 pm-7:55 pm

Nonstop2h 20m

Lambert-St Louis

Tue 3/10

7:15 pm-10:15 pm

Nonstop2h 00m

$277

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Tue 2/17

5:58 pm-11:36 pm

1 stop6h 38m

Lambert-St Louis

Thu 2/19

7:10 am-2:56 pm

1 stop6h 46m

$278

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Wed 4/1

6:25 am-7:45 am

Nonstop2h 20m

Lambert-St Louis

Wed 4/8

3:55 pm-9:15 pm

1 stop4h 20m

$279

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Sat 2/28

6:42 pm-11:59 pm

1 stop6h 17m

Lambert-St Louis

Tue 3/10

10:00 am-8:04 pm

2 stops9h 04m

$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 $248. 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 $349 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 $389 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

$253

Fastest flight time

2h 10m

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 $253. The best round-trip flight deal from Jacksonville to St. Louis found on momondo in the last 72 hours is $349.
The fastest flight from Jacksonville to St. Louis takes 2h 10m
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 10m.

  • 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
8,089 reviews
Search Delta flights
SouthwestPriceFrom $214Free CancellationRating
8.0
4,266 reviews
Search Southwest flights
American AirlinesPriceFrom $218Free CancellationRating
7.2
11,174 reviews
Search American Airlines flights

  • Southwest Flights From Jacksonville to St. Louis

    Southwest flies from Jacksonville to St. Louis around 2 times per week, with 4,266 momondo users rating the airline 8.0/10. The cheapest Southwest deal from Jacksonville to St. Louis in the last 72 hours was $214 (round-trip), much lower than the average airfare cost of $310 for Southwest flights on this route.

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
Fenton
Collinsville
St. Peters
Wentzville
Alton
Farmington
Clayton
Eureka
Edwardsville
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.

An easier way to manage your St. Louis trip

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