Latest deals
Insights
FAQs
Reviews
Price Alerts

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 10/15. 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

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Missouri to St. Louis

Cheap round-trip flights

Southwest Logo
10:50 am - 11:50 amMCI-STL
1h 00mnonstop
Southwest Logo
10:15 pm - 11:20 pmSTL-MCI
1h 05mnonstop
$97Southwest
Find Deal
Thu, Oct 2 - Thu, Oct 9
Southwest Logo
10:50 am - 11:50 amMCI-STL
1h 00mnonstop
Southwest Logo
7:35 pm - 12:10 amSTL-MCI
4h 35m1 stop
$107Southwest
Find Deal
Thu, Oct 2 - Thu, Oct 9
Frontier Logo
3:01 pm - 9:06 amMCI-STL
18h 05m1 stop
Frontier Logo
7:55 pm - 1:48 pmSTL-MCI
17h 53m1 stop
$225Frontier
Find Deal
Fri, Sep 19 - Sun, Sep 21
Logo
3:01 pm - 9:06 amMCI-STL
18h 05m1 stop
Logo
10:57 am - 10:42 amSTL-MCI
23h 45m2 stops
$233
Find Deal
Thu, Oct 2 - Thu, Oct 9
Logo
3:01 pm - 9:06 amMCI-STL
18h 05m1 stop
Logo
4:00 pm - 10:18 amSTL-MCI
18h 18m2 stops
$268
Find Deal
Fri, Sep 19 - Sun, Sep 21
American Airlines Logo
7:12 am - 9:53 pmMCI-STL
14h 41m1 stop
American Airlines Logo
9:56 am - 8:47 pmSTL-MCI
10h 51m1 stop
$297American Airlines
Find Deal
Tue, Sep 23 - Tue, Sep 30
American Airlines Logo
7:30 pm - 11:48 pmMCI-STL
4h 18m1 stop
American Airlines Logo
8:05 pm - 9:01 amSTL-MCI
12h 56m1 stop
$334American Airlines
Find Deal
Mon, Sep 29 - Mon, Oct 6
Frontier Logo
8:38 pm - 10:37 amMCI-STL
13h 59m2 stops
Frontier Logo
7:52 pm - 10:42 amSTL-MCI
14h 50m2 stops
$367Frontier
Find Deal
Thu, Oct 16 - Thu, Oct 23
United Airlines Logo
2:52 pm - 10:49 amCOU-STL
19h 57m1 stop
United Airlines Logo
12:25 pm - 9:27 pmSTL-COU
9h 02m1 stop
$385United Airlines
Find Deal
Mon, Sep 29 - Mon, Oct 6
United Airlines Logo
7:30 am - 3:44 pmMCI-STL
8h 14m1 stop
United Airlines Logo
5:15 am - 11:30 pmSTL-MCI
18h 15m1 stop
$457United Airlines
Find Deal
Thu, Oct 16 - Thu, Oct 23

Southwest flights from Missouri to St. Louis

Our best Southwest deals on Missouri to St. Louis flight tickets
Southwest
Oct 2
MCI10:50 amKansas City
1h 00m
STL11:50 amLambert-St Louis
Oct 9
STL10:15 pmLambert-St Louis
1h 05m
MCI11:20 pmKansas City
$97
Find similar
Southwest
Oct 2
MCI10:50 amKansas City
1h 00m
STL11:50 amLambert-St Louis
Oct 9
STL7:35 pmLambert-St Louis
4h 35m
1 stop
MCI12:10 amKansas City
$107
Find similar
Southwest
Sep 30
MCI9:10 amKansas City
5h 05m
1 stop
STL2:15 pmLambert-St Louis
Oct 7
STL7:05 pmLambert-St Louis
3h 30m
1 stop
MCI10:35 pmKansas City
$117
Find similar

American Airlines flights from Missouri to St. Louis

Our best American Airlines deals on Missouri to St. Louis flight tickets
American Airlines
Sep 23
MCI7:12 amKansas City
14h 41m
1 stop
STL9:53 pmLambert-St Louis
Sep 30
STL9:56 amLambert-St Louis
10h 51m
1 stop
MCI8:47 pmKansas City
$297
Find similar
American Airlines
Sep 29
MCI7:30 pmKansas City
4h 18m
1 stop
STL11:48 pmLambert-St Louis
Oct 6
STL8:05 pmLambert-St Louis
12h 56m
1 stop
MCI9:01 amKansas City
$334
Find similar
American Airlines
Sep 17
MCI10:46 amKansas City
4h 23m
1 stop
STL3:09 pmLambert-St Louis
Sep 24
STL6:10 amLambert-St Louis
9h 01m
1 stop
MCI3:11 pmKansas City
$400
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 September 3, 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

Thu 10/2

10:50 am-11:50 am

Nonstop1h 00m

Lambert-St Louis

Thu 10/9

10:15 pm-11:20 pm

Nonstop1h 05m

$97

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Thu 10/2

10:50 am-11:50 am

Nonstop1h 00m

Lambert-St Louis

Thu 10/9

7:35 pm-12:10 am

1 stop4h 35m

$107

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Fri 9/19

3:01 pm-9:06 am

1 stop18h 05m

Lambert-St Louis

Sun 9/21

7:55 pm-1:48 pm

1 stop17h 53m

$225

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Thu 10/2

3:01 pm-9:06 am

1 stop18h 05m

Lambert-St Louis

Thu 10/9

10:57 am-10:42 am

2 stops23h 45m

$233

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Fri 9/19

3:01 pm-9:06 am

1 stop18h 05m

Lambert-St Louis

Sun 9/21

4:00 pm-10:18 am

2 stops18h 18m

$268

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Tue 9/23

7:12 am-9:53 pm

1 stop14h 41m

Lambert-St Louis

Tue 9/30

9:56 am-8:47 pm

1 stop10h 51m

$297

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Mon 9/29

7:30 pm-11:48 pm

1 stop4h 18m

Lambert-St Louis

Mon 10/6

8:05 pm-9:01 am

1 stop12h 56m

$334

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Thu 10/16

8:38 pm-10:37 am

2 stops13h 59m

Lambert-St Louis

Thu 10/23

7:52 pm-10:42 am

2 stops14h 50m

$367

ColumbiaSt. Louis

COU - STL

COUSTL

Columbia Regional

Mon 9/29

2:52 pm-10:49 am

1 stop19h 57m

Lambert-St Louis

Mon 10/6

12:25 pm-9:27 pm

1 stop9h 02m

$385

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Thu 10/16

7:30 am-3:44 pm

1 stop8h 14m

Lambert-St Louis

Thu 10/23

5:15 am-11:30 pm

1 stop18h 15m

$457

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $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 Monday because tickets tend to average around $428. 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 $352 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 $411 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

$195

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 $195. The best round-trip flight deal from Missouri to St. Louis found on momondo in the last 72 hours is $296.
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
4,238 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
Fenton
Collinsville
Wentzville
Alton
St. Peters
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.

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 9/8
Mon 9/15
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States