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Cheap flights from Missouri to St. Louis from $65

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 6/8. 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.
Frontier Logo
1:45 pm - 7:23 pm
MCI
-
STL
5h 38m
1 stop
Frontier Logo
6:31 pm - 5:21 pm
STL
-
MCI
22h 50m
1 stop
$194Frontier
mar., juin 9 - mar., juin 16
Frontier Logo
6:16 pm - 8:52 am
MCI
-
STL
14h 36m
1 stop
Frontier Logo
6:33 pm - 12:55 pm
STL
-
MCI
18h 22m
2 stops
$236Frontier
ven., juil. 3 - dim., juil. 5
Frontier Logo
1:45 pm - 8:47 am
MCI
-
STL
19h 02m
2 stops
Frontier Logo
6:31 pm - 5:21 pm
STL
-
MCI
22h 50m
1 stop
$239Frontier
mar., juin 9 - mar., juin 16
Frontier Logo
1:50 pm - 2:07 pm
MCI
-
STL
24h 17m
1 stop
Frontier Logo
8:08 pm - 12:55 pm
STL
-
MCI
16h 47m
1 stop
$240Frontier
dim., août 2 - dim., août 9
Multiple Airlines Logo
2:30 pm - 2:31 pm
TBN
-
STL
24h 01m
1 stop
Multiple Airlines Logo
7:20 pm - 3:40 pm
STL
-
TBN
20h 20m
2 stops
$372Multiple Airlines
mer., mai 27 - dim., mai 31
Multiple Airlines Logo
4:10 pm - 6:18 pm
TBN
-
STL
26h 08m
1 stop
Multiple Airlines Logo
7:03 pm - 11:40 am
STL
-
TBN
16h 37m
1 stop
$399Multiple Airlines
jeu., juin 11 - jeu., juin 18
American Airlines Logo
6:00 am - 1:12 pm
COU
-
STL
7h 12m
1 stop
American Airlines Logo
5:03 pm - 10:05 am
STL
-
COU
17h 02m
1 stop
$491American Airlines
sam., juin 6 - ven., juin 12
American Airlines Logo
6:00 am - 12:16 am
COU
-
STL
18h 16m
1 stop
American Airlines Logo
9:09 am - 9:24 pm
STL
-
COU
36h 15m
1 stop
$564American Airlines
ven., juin 12 - jeu., juin 18
United Airlines Logo
8:00 am - 5:28 pm
COU
-
STL
9h 28m
1 stop
United Airlines Logo
9:14 am - 10:13 am
STL
-
COU
24h 59m
1 stop
$735United Airlines
jeu., mai 28 - lun., juin 1
United Airlines Logo
10:53 am - 10:52 pm
COU
-
STL
11h 59m
1 stop
United Airlines Logo
7:05 pm - 10:13 am
STL
-
COU
15h 08m
1 stop
$750United Airlines
mer., mai 27 - dim., mai 31

Frontier flights from Missouri to St. Louis

Our best Frontier deals on Missouri to St. Louis flight tickets
Frontier
Jun 9
MCI1:45 pmKansas City
5h 38m
1 stop
STL7:23 pmLambert-St Louis
Jun 16
STL6:31 pmLambert-St Louis
22h 50m
1 stop
MCI5:21 pmKansas City
$194
Frontier
Jul 3
MCI6:16 pmKansas City
14h 36m
1 stop
STL8:52 amLambert-St Louis
Jul 5
STL6:33 pmLambert-St Louis
18h 22m
2 stops
MCI12:55 pmKansas City
$236
Frontier
Jun 9
MCI1:45 pmKansas City
19h 02m
2 stops
STL8:47 amLambert-St Louis
Jun 16
STL6:31 pmLambert-St Louis
22h 50m
1 stop
MCI5:21 pmKansas City
$239

American Airlines flights from Missouri to St. Louis

Our best American Airlines deals on Missouri to St. Louis flight tickets
American Airlines
Jun 30
MCI5:31 amKansas City
7h 18m
1 stop
STL12:49 pmLambert-St Louis
Jun 30
STL5:18 pmLambert-St Louis
4h 41m
1 stop
MCI9:59 pmKansas City
$351
American Airlines
May 15
MCI6:07 pmKansas City
5h 49m
1 stop
STL11:56 pmLambert-St Louis
May 17
STL5:20 amLambert-St Louis
4h 55m
1 stop
MCI10:15 amKansas City
$397
American Airlines
Jun 22
MCI6:03 pmKansas City
5h 56m
1 stop
STL11:59 pmLambert-St Louis
Jun 23
STL7:04 amLambert-St Louis
4h 45m
1 stop
MCI11:49 amKansas City
$414

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 mai 14, 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

Cheapest round-trip

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

mar. 6/9

1:45 pm-7:23 pm

1 stop5h 38m

Lambert-St Louis

mar. 6/16

6:31 pm-5:21 pm

1 stop22h 50m

$194

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

ven. 7/3

6:16 pm-8:52 am

1 stop14h 36m

Lambert-St Louis

dim. 7/5

6:33 pm-12:55 pm

2 stops18h 22m

$236

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

mar. 6/9

1:45 pm-8:47 am

2 stops19h 02m

Lambert-St Louis

mar. 6/16

6:31 pm-5:21 pm

1 stop22h 50m

$239

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

dim. 8/2

1:50 pm-2:07 pm

1 stop24h 17m

Lambert-St Louis

dim. 8/9

8:08 pm-12:55 pm

1 stop16h 47m

$240

Fort Leonard WoodSt. Louis

TBN - STL

TBNSTL

Fort Leonard Wood Waynesville Regional

mer. 5/27

2:30 pm-2:31 pm

1 stop24h 01m

Lambert-St Louis

dim. 5/31

7:20 pm-3:40 pm

2 stops20h 20m

$372

Fort Leonard WoodSt. Louis

TBN - STL

TBNSTL

Fort Leonard Wood Waynesville Regional

jeu. 6/11

4:10 pm-6:18 pm

1 stop26h 08m

Lambert-St Louis

jeu. 6/18

7:03 pm-11:40 am

1 stop16h 37m

$399
Quickest round-trip

ColumbiaSt. Louis

COU - STL

COUSTL

Columbia Regional

sam. 6/6

6:00 am-1:12 pm

1 stop7h 12m

Lambert-St Louis

ven. 6/12

5:03 pm-10:05 am

1 stop17h 02m

$491

ColumbiaSt. Louis

COU - STL

COUSTL

Columbia Regional

ven. 6/12

6:00 am-12:16 am

1 stop18h 16m

Lambert-St Louis

jeu. 6/18

9:09 am-9:24 pm

1 stop36h 15m

$564

ColumbiaSt. Louis

COU - STL

COUSTL

Columbia Regional

jeu. 5/28

8:00 am-5:28 pm

1 stop9h 28m

Lambert-St Louis

lun. 6/1

9:14 am-10:13 am

1 stop24h 59m

$735

ColumbiaSt. Louis

COU - STL

COUSTL

Columbia Regional

mer. 5/27

10:53 am-10:52 pm

1 stop11h 59m

Lambert-St Louis

dim. 5/31

7:05 pm-10:13 am

1 stop15h 08m

$750

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 month to fly to St. Louis?

In general, May is the cheapest month to fly from Missouri to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $97. The month of October is another great option to travel to St. Louis, with average flight prices from Missouri averaging around $107.

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 $397. 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 $459. 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 $393 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 $437 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

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

You could potentially save up to 11% 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

$213

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 $213. The best round-trip flight deal from Missouri to St. Louis found on momondo in the last 72 hours is $395.
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

Frequently asked questions about flying from Missouri to St. Louis

  • 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 $137Free CancellationRating
8.0
4,299 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
O'Fallon
Florissant
St. Peters
Collinsville
Alton
Wentzville
Fenton
Farmington
Festus
Clayton
Eureka
Litchfield
Edwardsville
Shrewsbury
Grafton

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.

An easier way to manage your St. Louis trip

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