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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.
Frontier Logo
7:18 pm - 6:51 am
JAX
-
STL
12h 33m
1 stop
Frontier Logo
5:42 pm - 6:33 pm
STL
-
JAX
23h 51m
2 stops
$226Frontier
Fri, Jan 30 - Tue, Feb 3
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
Multiple Airlines Logo
7:18 pm - 6:51 am
JAX
-
STL
12h 33m
1 stop
Multiple Airlines Logo
8:22 pm - 3:05 pm
STL
-
JAX
17h 43m
2 stops
$246Multiple Airlines
Fri, Jan 30 - Sat, Feb 7
Multiple Airlines Logo
11:21 am - 7:02 am
JAX
-
STL
20h 41m
2 stops
Multiple Airlines Logo
2:09 pm - 7:33 pm
STL
-
JAX
4h 24m
1 stop
$256Multiple Airlines
Thu, Mar 5 - Mon, Mar 9
Southwest Logo
8:20 am - 9:35 am
JAX
-
STL
2h 15mnonstop
Southwest Logo
8:25 am - 3:25 pm
STL
-
JAX
6h 00m
1 stop
$269Southwest
Wed, Apr 8 - Wed, Apr 29
Southwest Logo
8:20 am - 9:35 am
JAX
-
STL
2h 15mnonstop
Southwest Logo
12:40 pm - 10:10 pm
STL
-
JAX
8h 30m
2 stops
$275Southwest
Wed, Apr 8 - Wed, Apr 29
Southwest Logo
7:20 am - 11:30 am
JAX
-
STL
5h 10m
1 stop
Southwest Logo
1:55 pm - 4:55 pm
STL
-
JAX
2h 00mnonstop
$279Southwest
Wed, Apr 15 - Mon, Apr 20
American Airlines Logo
11:53 am - 3:04 pm
JAX
-
STL
4h 11m
1 stop
American Airlines Logo
8:13 am - 3:41 pm
STL
-
JAX
6h 28m
1 stop
$280American Airlines
Sat, Feb 7 - Tue, Feb 10
American Airlines Logo
7:32 pm - 11:59 pm
JAX
-
STL
5h 27m
1 stop
American Airlines Logo
3:37 pm - 10:54 pm
STL
-
JAX
6h 17m
1 stop
$281American Airlines
Fri, Feb 6 - Mon, Feb 9
American Airlines Logo
9:43 am - 3:13 pm
JAX
-
STL
6h 30m
1 stop
American Airlines Logo
6:27 am - 1:11 pm
STL
-
JAX
5h 44m
1 stop
$283American Airlines
Wed, Apr 15 - Mon, Apr 20

Frontier flights from Jacksonville to St. Louis

Our best Frontier deals on Jacksonville to St. Louis flight tickets
Frontier
Jan 30
JAX7:18 pmJacksonville
12h 33m
1 stop
STL6:51 amLambert-St Louis
Feb 3
STL5:42 pmLambert-St Louis
23h 51m
2 stops
JAX6:33 pmJacksonville
$226
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

United Airlines flights from Jacksonville to St. Louis

Our best United Airlines deals on Jacksonville to St. Louis flight tickets
United Airlines
Feb 11
JAX10:40 amJacksonville
7h 38m
1 stop
STL5:18 pmLambert-St Louis
Feb 18
STL7:00 amLambert-St Louis
7h 37m
1 stop
JAX3:37 pmJacksonville
$349
United Airlines
Feb 10
JAX5:05 pmJacksonville
5h 55m
1 stop
STL10:00 pmLambert-St Louis
Feb 17
STL9:55 amLambert-St Louis
9h 19m
2 stops
JAX8:14 pmJacksonville
$354
United Airlines
Feb 10
JAX10:40 amJacksonville
13h 18m
2 stops
STL10:58 pmLambert-St Louis
Feb 17
STL7:41 amLambert-St Louis
11h 33m
2 stops
JAX8:14 pmJacksonville
$360

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 15, 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 1/30

7:18 pm-6:51 am

1 stop12h 33m

Lambert-St Louis

Tue 2/3

5:42 pm-6:33 pm

2 stops23h 51m

$226

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

Fri 1/30

7:18 pm-6:51 am

1 stop12h 33m

Lambert-St Louis

Sat 2/7

8:22 pm-3:05 pm

2 stops17h 43m

$246

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Thu 3/5

11:21 am-7:02 am

2 stops20h 41m

Lambert-St Louis

Mon 3/9

2:09 pm-7:33 pm

1 stop4h 24m

$256

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Wed 4/8

8:20 am-9:35 am

Nonstop2h 15m

Lambert-St Louis

Wed 4/29

8:25 am-3:25 pm

1 stop6h 00m

$269

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Wed 4/8

8:20 am-9:35 am

Nonstop2h 15m

Lambert-St Louis

Wed 4/29

12:40 pm-10:10 pm

2 stops8h 30m

$275

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Wed 4/15

7:20 am-11:30 am

1 stop5h 10m

Lambert-St Louis

Mon 4/20

1:55 pm-4:55 pm

Nonstop2h 00m

$279

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Sat 2/7

11:53 am-3:04 pm

1 stop4h 11m

Lambert-St Louis

Tue 2/10

8:13 am-3:41 pm

1 stop6h 28m

$280

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Fri 2/6

7:32 pm-11:59 pm

1 stop5h 27m

Lambert-St Louis

Mon 2/9

3:37 pm-10:54 pm

1 stop6h 17m

$281

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Wed 4/15

9:43 am-3:13 pm

1 stop6h 30m

Lambert-St Louis

Mon 4/20

6:27 am-1:11 pm

1 stop5h 44m

$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 evening is the least expensive time of day to depart. momondo users have found prices as low as $357 when looking at flights departing in the evening. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $390 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 $320 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?

No. A direct flight is the cheapest option for a flight between Jacksonville to St. Louis.

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

As of January 2026, prices for Jacksonville to St. Louis flights are approximately 21% 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

$242

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 $242. The best round-trip flight deal from Jacksonville to St. Louis found on momondo in the last 72 hours is $364.
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
8,051 reviews
Search Delta flights
SouthwestPriceFrom $214Free CancellationRating
8.0
4,258 reviews
Search Southwest flights
American AirlinesPriceFrom $218Free CancellationRating
7.2
11,136 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
Florissant
Maryland Heights
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.

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