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Cheap flights from Missouri to St. Louis from $49

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Missouri to St. Louis departing on 11/17. 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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Find the cheapest flights from Missouri to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
12:00 pm - 1:00 pmMCI-STL
1h 00mnonstop
Southwest Logo
2:25 pm - 3:35 pmSTL-MCI
1h 10mnonstop
$97Southwest
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Wed, Dec 10 - Thu, Dec 11
Southwest Logo
7:15 am - 1:05 pmMCI-STL
5h 50m1 stop
Southwest Logo
8:20 pm - 9:30 pmSTL-MCI
1h 10mnonstop
$107Southwest
Find Deal
Wed, Dec 10 - Wed, Dec 10
Southwest Logo
6:15 am - 7:30 amMCI-STL
1h 15mnonstop
Southwest Logo
11:15 am - 5:15 pmSTL-MCI
6h 00m2 stops
$112Southwest
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Wed, Dec 10 - Wed, Dec 10
Frontier Logo
6:49 pm - 9:07 amMCI-STL
14h 18m1 stop
Frontier Logo
7:45 pm - 7:38 pmSTL-MCI
23h 53m1 stop
$121Frontier
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Tue, Nov 4 - Wed, Nov 5
Frontier Logo
8:28 pm - 9:07 amMCI-STL
12h 39m1 stop
Frontier Logo
7:45 pm - 5:19 pmSTL-MCI
21h 34m1 stop
$152Frontier
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Fri, Oct 31 - Tue, Nov 4
Multiple Airlines Logo
8:28 pm - 9:07 amMCI-STL
12h 39m1 stop
Multiple Airlines Logo
6:21 pm - 6:28 pmSTL-MCI
24h 07m1 stop
$208Multiple Airlines
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Fri, Nov 7 - Sun, Nov 9
Multiple Airlines Logo
6:49 pm - 9:07 amMCI-STL
14h 18m1 stop
Multiple Airlines Logo
7:45 pm - 10:01 pmSTL-MCI
26h 16m2 stops
$251Multiple Airlines
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Wed, Nov 5 - Fri, Nov 7
American Airlines Logo
6:05 am - 3:12 pmMCI-STL
9h 07m1 stop
American Airlines Logo
8:40 am - 3:11 pmSTL-MCI
6h 31m1 stop
$319American Airlines
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Mon, Nov 24 - Fri, Nov 28
American Airlines Logo
11:15 am - 4:27 pmMCI-STL
5h 12m1 stop
American Airlines Logo
5:14 am - 9:55 amSTL-MCI
4h 41m1 stop
$331American Airlines
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Tue, Dec 2 - Sat, Dec 13
Spirit Airlines Logo
10:31 pm - 1:53 pmMCI-STL
15h 22m2 stops
Spirit Airlines Logo
12:20 pm - 9:20 pmSTL-MCI
33h 00m3 stops
$335Spirit Airlines
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Fri, Jan 23 - Sun, Jan 25

American Airlines flights from Missouri to St. Louis

Our best American Airlines deals on Missouri to St. Louis flight tickets
American Airlines
Nov 24
MCI6:05 amKansas City
9h 07m
1 stop
STL3:12 pmLambert-St Louis
Nov 28
STL8:40 amLambert-St Louis
6h 31m
1 stop
MCI3:11 pmKansas City
$319
Find similar
American Airlines
Dec 2
MCI11:15 amKansas City
5h 12m
1 stop
STL4:27 pmLambert-St Louis
Dec 13
STL5:14 amLambert-St Louis
4h 41m
1 stop
MCI9:55 amKansas City
$331
Find similar
American Airlines
Oct 30
COU1:49 pmColumbia Regional
26h 20m
1 stop
STL4:09 pmLambert-St Louis
Nov 3
STL4:42 pmLambert-St Louis
41h 11m
1 stop
COU9:53 amColumbia Regional
$418
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Southwest flights from Missouri to St. Louis

Our best Southwest deals on Missouri to St. Louis flight tickets
Southwest
Dec 10
MCI12:00 pmKansas City
1h 00m
STL1:00 pmLambert-St Louis
Dec 11
STL2:25 pmLambert-St Louis
1h 10m
MCI3:35 pmKansas City
$97
Find similar
Southwest
Dec 10
MCI7:15 amKansas City
5h 50m
1 stop
STL1:05 pmLambert-St Louis
Dec 10
STL8:20 pmLambert-St Louis
1h 10m
MCI9:30 pmKansas City
$107
Find similar
Southwest
Dec 10
MCI6:15 amKansas City
1h 15m
STL7:30 amLambert-St Louis
Dec 10
STL11:15 amLambert-St Louis
6h 00m
2 stops
MCI5:15 pmKansas City
$112
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Missouri 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 October 17, 2025.
Use the filters below to find and compare flights from Missouri to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Wed 12/10

12:00 pm-1:00 pm

Nonstop1h 00m

Lambert-St Louis

Thu 12/11

2:25 pm-3:35 pm

Nonstop1h 10m

$97

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Wed 12/10

7:15 am-1:05 pm

1 stop5h 50m

Lambert-St Louis

Wed 12/10

8:20 pm-9:30 pm

Nonstop1h 10m

$107

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Wed 12/10

6:15 am-7:30 am

Nonstop1h 15m

Lambert-St Louis

Wed 12/10

11:15 am-5:15 pm

2 stops6h 00m

$112

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Tue 11/4

6:49 pm-9:07 am

1 stop14h 18m

Lambert-St Louis

Wed 11/5

7:45 pm-7:38 pm

1 stop23h 53m

$121

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Fri 10/31

8:28 pm-9:07 am

1 stop12h 39m

Lambert-St Louis

Tue 11/4

7:45 pm-5:19 pm

1 stop21h 34m

$152

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Fri 11/7

8:28 pm-9:07 am

1 stop12h 39m

Lambert-St Louis

Sun 11/9

6:21 pm-6:28 pm

1 stop24h 07m

$208

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Wed 11/5

6:49 pm-9:07 am

1 stop14h 18m

Lambert-St Louis

Fri 11/7

7:45 pm-10:01 pm

2 stops26h 16m

$251

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Mon 11/24

6:05 am-3:12 pm

1 stop9h 07m

Lambert-St Louis

Fri 11/28

8:40 am-3:11 pm

1 stop6h 31m

$319

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Tue 12/2

11:15 am-4:27 pm

1 stop5h 12m

Lambert-St Louis

Sat 12/13

5:14 am-9:55 am

1 stop4h 41m

$331

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Fri 1/23

10:31 pm-1:53 pm

2 stops15h 22m

Lambert-St Louis

Sun 1/25

12:20 pm-9:20 pm

3 stops33h 00m

$335

Flights are sorted by cheapest round-trip flights first.

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See travel insights to St. Louis from

How to get the cheapest flight ticket from Missouri 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 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 $378. 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 Saturday because tickets tend to average around $431. 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 Missouri at noon is the least expensive time of day to depart. momondo users have found prices as low as $380 when looking at flights departing at noon. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $410 per ticket.

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

Fly from Kansas City to Lambert-St Louis for the best Missouri - Lambert-St Louis flight prices

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

There is only 1 cabin class available to choose from on Missouri 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 Missouri to St. Louis flights?

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

Cheap Missouri to St. Louis flight deals and tips

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

Best Price Found

$207

Fastest flight time

1h 00m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Missouri in the past 72 hours is $207. The best round-trip flight deal from Missouri to St. Louis found on momondo in the last 72 hours is $311.
The fastest flight from Missouri to St. Louis takes 1h 00m
Direct flights go from Missouri to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)
Search flight deals

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

    Prices for flights from Missouri to Lambert-St Louis Airport are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Missouri to Lambert-St Louis Airport.

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

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Best airlines flying from Missouri to St. Louis

Compare and see reviews for airlines that fly from Missouri to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $97Free CancellationRating
8.0
4,241 reviews
Search Southwest 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
Wentzville
Collinsville
Fenton
St. Peters
Alton
Farmington
Festus
Glencoe
Clayton
Edwardsville
Eureka
Litchfield
Shrewsbury

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Missouri to St. Louis for you.

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

Yes. momondo enables you to select and highlight flights to St. Louis from Missouri with this policy.

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

Once all potential Missouri to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to St. Louis from Missouri are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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