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Cheap flights from Missouri to St. Louis from $80

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 2/27. 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
8:00 am - 1:25 pm
MCI
-
STL
5h 25m
1 stop
Southwest Logo
3:50 pm - 5:00 pm
STL
-
MCI
1h 10mnonstop
$195Southwest
Wed, Apr 29 - Mon, May 4
Southwest Logo
5:50 pm - 10:40 pm
MCI
-
STL
4h 50m
1 stop
Southwest Logo
8:30 am - 9:40 am
STL
-
MCI
1h 10mnonstop
$203Southwest
Mon, May 4 - Thu, May 7
Frontier Logo
2:15 pm - 7:12 pm
MCI
-
STL
4h 57m
1 stop
Frontier Logo
8:12 pm - 1:30 pm
STL
-
MCI
17h 18m
1 stop
$213Frontier
Mon, May 4 - Thu, May 7
Multiple Airlines Logo
4:24 pm - 10:27 pm
MCI
-
STL
30h 03m
1 stop
Multiple Airlines Logo
8:17 pm - 9:29 am
STL
-
MCI
13h 12m
1 stop
$217Multiple Airlines
Tue, Feb 17 - Sat, Feb 21
Multiple Airlines Logo
4:24 pm - 6:51 am
MCI
-
STL
14h 27m
2 stops
Multiple Airlines Logo
8:17 pm - 9:29 am
STL
-
MCI
13h 12m
1 stop
$224Multiple Airlines
Tue, Feb 17 - Sat, Feb 21
Frontier Logo
4:39 pm - 11:59 pm
MCI
-
STL
31h 20m
2 stops
Frontier Logo
8:17 pm - 9:58 am
STL
-
MCI
13h 41m
1 stop
$263Frontier
Wed, Feb 25 - Sat, Feb 28
American Airlines Logo
4:28 pm - 10:17 pm
COU
-
STL
29h 49m
1 stop
American Airlines Logo
7:05 am - 9:43 am
STL
-
COU
26h 38m
1 stop
$343American Airlines
Fri, Apr 24 - Mon, Apr 27
United Airlines Logo
11:15 am - 9:05 pm
COU
-
STL
9h 50m
1 stop
United Airlines Logo
7:41 am - 9:33 pm
STL
-
COU
13h 52m
1 stop
$400United Airlines
Sat, Feb 21 - Wed, Feb 25
United Airlines Logo
8:00 am - 10:36 am
COU
-
STL
26h 36m
1 stop
United Airlines Logo
7:41 am - 9:33 pm
STL
-
COU
13h 52m
1 stop
$539United Airlines
Sat, Feb 21 - Wed, Feb 25
American Airlines Logo
10:08 am - 5:58 pm
COU
-
STL
31h 50m
1 stop
American Airlines Logo
6:36 pm - 9:30 am
STL
-
COU
38h 54m
1 stop
$599American Airlines
Mon, Feb 16 - Fri, Feb 20

United Airlines flights from Missouri to St. Louis

Our best United Airlines deals on Missouri to St. Louis flight tickets
United Airlines
Feb 21
COU11:15 amColumbia Regional
9h 50m
1 stop
STL9:05 pmLambert-St Louis
Feb 25
STL7:41 amLambert-St Louis
13h 52m
1 stop
COU9:33 pmColumbia Regional
$400
United Airlines
Feb 21
MCI8:00 amKansas City
7h 38m
1 stop
STL3:38 pmLambert-St Louis
Feb 25
STL9:55 amLambert-St Louis
4h 29m
1 stop
MCI2:24 pmKansas City
$430
United Airlines
Feb 18
MCI11:32 amKansas City
4h 30m
1 stop
STL4:02 pmLambert-St Louis
Feb 22
STL4:49 pmLambert-St Louis
5h 10m
1 stop
MCI9:59 pmKansas City
$451

Southwest flights from Missouri to St. Louis

Our best Southwest deals on Missouri to St. Louis flight tickets
Southwest
Apr 29
MCI8:00 amKansas City
5h 25m
1 stop
STL1:25 pmLambert-St Louis
May 4
STL3:50 pmLambert-St Louis
1h 10m
MCI5:00 pmKansas City
$195
Southwest
May 4
MCI5:50 pmKansas City
4h 50m
1 stop
STL10:40 pmLambert-St Louis
May 7
STL8:30 amLambert-St Louis
1h 10m
MCI9:40 amKansas City
$203
Southwest
Apr 29
MCI4:40 pmKansas City
6h 35m
1 stop
STL11:15 pmLambert-St Louis
May 4
STL8:30 amLambert-St Louis
6h 20m
1 stop
MCI2:50 pmKansas City
$205

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 February 3, 2026.
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 4/29

8:00 am-1:25 pm

1 stop5h 25m

Lambert-St Louis

Mon 5/4

3:50 pm-5:00 pm

Nonstop1h 10m

$195

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Mon 5/4

5:50 pm-10:40 pm

1 stop4h 50m

Lambert-St Louis

Thu 5/7

8:30 am-9:40 am

Nonstop1h 10m

$203

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Mon 5/4

2:15 pm-7:12 pm

1 stop4h 57m

Lambert-St Louis

Thu 5/7

8:12 pm-1:30 pm

1 stop17h 18m

$213

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Tue 2/17

4:24 pm-10:27 pm

1 stop30h 03m

Lambert-St Louis

Sat 2/21

8:17 pm-9:29 am

1 stop13h 12m

$217

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Tue 2/17

4:24 pm-6:51 am

2 stops14h 27m

Lambert-St Louis

Sat 2/21

8:17 pm-9:29 am

1 stop13h 12m

$224

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Wed 2/25

4:39 pm-11:59 pm

2 stops31h 20m

Lambert-St Louis

Sat 2/28

8:17 pm-9:58 am

1 stop13h 41m

$263

ColumbiaSt. Louis

COU - STL

COUSTL

Columbia Regional

Fri 4/24

4:28 pm-10:17 pm

1 stop29h 49m

Lambert-St Louis

Mon 4/27

7:05 am-9:43 am

1 stop26h 38m

$343

ColumbiaSt. Louis

COU - STL

COUSTL

Columbia Regional

Sat 2/21

11:15 am-9:05 pm

1 stop9h 50m

Lambert-St Louis

Wed 2/25

7:41 am-9:33 pm

1 stop13h 52m

$400

ColumbiaSt. Louis

COU - STL

COUSTL

Columbia Regional

Sat 2/21

8:00 am-10:36 am

1 stop26h 36m

Lambert-St Louis

Wed 2/25

7:41 am-9:33 pm

1 stop13h 52m

$539

ColumbiaSt. Louis

COU - STL

COUSTL

Columbia Regional

Mon 2/16

10:08 am-5:58 pm

1 stop31h 50m

Lambert-St Louis

Fri 2/20

6:36 pm-9:30 am

1 stop38h 54m

$599

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 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 Thursday when prices can be found for as low as $380. 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 $442. 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 in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $380 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 $425 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?

You could potentially save up to 57% on your flight if you consider stops on a Missouri to St. Louis flight.

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

$225

Fastest flight time

1h 05m

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 $225. The best round-trip flight deal from Missouri to St. Louis found on momondo in the last 72 hours is $393.
The fastest flight from Missouri to St. Louis takes 1h 05m
Direct flights go from Missouri to St. Louis every day.
There is 1 airport in St. Louis. From Missouri there are direct flights to 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
4,272 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
Maryland Heights
Florissant
O'Fallon
Collinsville
St. Peters
Fenton
Wentzville
Alton
Farmington
Clayton
Edwardsville
Eureka
Festus
Litchfield
Glencoe
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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