St. Louis

$72+ Cheap flights from Missouri to St. Louis (STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/16. Fares are subject to change and may not be available on all flights or dates of travel.
STL — STL
Jan 13 — Jan 201
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Cheap flight deals from Missouri to St. Louis

Cheapest flights from Missouri to St. Louis
Explore the most affordable flight options available from Missouri to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 14, 2025.

This United Airlines deal was found by Cheapflights users on 12/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/276:00 amMCI - STL
1 stop6h 27mUnited Airlines
Wed 12/318:05 amSTL - MCI
1 stop6h 33mUnited Airlines
Deal found 12/12$453
This Kiwi.com deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/238:45 pmMCI - STL
1 stop13h 17mFrontier
Wed 12/247:43 pmSTL - MCI
2 stops15h 15mFrontier
Deal found 12/13$535
This United Airlines deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/225:07 pmMCI - STL
1 stop5h 15mUnited Airlines
Sat 1/36:30 amSTL - MCI
1 stop4h 13mUnited Airlines
Deal found 12/14$537
This Kiwi.com deal was found by Cheapflights users on 12/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/276:15 pmMCI - STL
1 stop16h 41mMultiple Airlines
Wed 12/314:27 pmSTL - MCI
2 stops18h 31mMultiple Airlines
Deal found 12/12$550
This United Airlines deal was found by Cheapflights users on 12/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/134:30 pmMCI - STL
1 stop5h 28mUnited Airlines
Sun 12/146:15 amSTL - MCI
1 stop8h 02mUnited Airlines
Deal found 12/12$585
This American Airlines deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/121:44 pmMCI - STL
1 stop5h 45mAmerican Airlines
Sun 12/144:49 pmSTL - MCI
1 stop4h 40mAmerican Airlines
Deal found 12/11$621
This Southwest deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:40 pmMCI - STL
Nonstop1h 05mSouthwest
Wed 12/248:20 pmSTL - MCI
Nonstop1h 10mSouthwest
Deal found 12/13$653
This Kiwi.com deal was found by Cheapflights users on 12/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/176:30 amMCI - STL
2 stops27h 10mMultiple Airlines
Thu 12/1811:51 amSTL - MCI
1 stop29h 19mMultiple Airlines
Deal found 12/12$664
This United Airlines deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/286:35 pmMCI - STL
1 stop4h 08mUnited Airlines
Thu 1/18:15 amSTL - MCI
1 stop12h 16mUnited Airlines
Deal found 12/13$683
This Kiwi.com deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/198:45 pmMCI - STL
1 stop13h 17mFrontier
Sun 12/2110:10 pmSTL - MCI
2 stops21h 40mFrontier
Deal found 12/13$706
This Southwest deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1911:30 amMCI - STL
Nonstop1h 05mSouthwest
Sun 12/214:15 pmSTL - MCI
Nonstop1h 10mSouthwest
Deal found 12/13$709
This Kiwi.com deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/122:48 pmMCI - STL
1 stop19h 26mFrontier
Sun 12/1410:42 amSTL - MCI
2 stops33h 08mFrontier
Deal found 12/11$726

Find flight deals from Missouri to St. Louis

Keep the following information in mind while searching for Missouri to St. Louis flight deals. Data was last updated December 14, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$164
(Southwest)

One-way from

$72
(Kiwi.com)

Popular in

February

Cheapest in

March

Average price

$530

Good round-trip deal

$404 or less

Good one-way deal

$186 or less
Provider with most accurate pricing for Kansas City-Lambert-St Louis flight deals.
Provider most trusted by Cheapflights users for Kansas City-Lambert-St Louis flights.
From Missouri to Lambert-St Louis
One-way flight from Missouri to Lambert-St Louis
High demand for flights, 5% potential price rise
Cheapest flight prices on average. 5% potential price decrease ($21 potential savings vs. average RT price).
Average for round-trip flights in December 2025
Price to beat on a round-trip flight from Missouri to Lambert-St Louis.
Price to beat on a one-way flight from Missouri to Lambert-St Louis.

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated December 14, 2025.
Use the filters below to find and compare flights from Missouri to St. Louis that are best for you.

Fly from

Missouri

Fly to

St. Louis

Route

Depart

Return

Price

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Sat 1/24

6:10 am-12:55 pm

1 stop6h 45m

Lambert-St Louis

Tue 1/27

7:45 pm-8:55 pm

Nonstop1h 10m

$181

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Thu 1/8

5:04 pm-7:50 am

1 stop14h 46m

Lambert-St Louis

Sat 1/10

7:43 pm-7:26 pm

1 stop23h 43m

$186

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Wed 1/21

6:50 am-12:20 pm

1 stop5h 30m

Lambert-St Louis

Wed 1/21

5:55 pm-9:25 pm

1 stop3h 30m

$191

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Thu 1/8

11:00 am-4:50 pm

2 stops5h 50m

Lambert-St Louis

Sat 1/10

10:25 am-4:00 pm

1 stop5h 35m

$196

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Fri 1/16

11:21 am-6:51 am

1 stop19h 30m

Lambert-St Louis

Sat 1/17

5:11 pm-4:09 pm

1 stop22h 58m

$220

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Sun 1/11

8:23 pm-10:02 am

1 stop13h 39m

Lambert-St Louis

Sun 1/18

1:35 pm-11:33 pm

1 stop9h 58m

$224

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Sun 1/11

8:23 pm-10:02 am

1 stop13h 39m

Lambert-St Louis

Sun 1/18

10:09 pm-6:18 pm

2 stops20h 09m

$227

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Sat 1/10

3:00 pm-10:00 pm

1 stop7h 00m

Lambert-St Louis

Tue 1/13

8:05 am-2:27 pm

1 stop6h 22m

$251

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Wed 1/28

8:00 am-12:29 pm

1 stop4h 29m

Lambert-St Louis

Wed 1/28

6:00 pm-11:30 pm

1 stop5h 30m

$251

ColumbiaSt. Louis

COU - STL

COUSTL

Columbia Regional

Wed 2/18

11:15 am-9:05 pm

1 stop9h 50m

Lambert-St Louis

Sat 2/21

7:41 am-9:33 pm

1 stop13h 52m

$459

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/13

Showing 1-10 of 20 results
1
2

Best time to book a flight from Missouri to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Missouri with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Missouri to St. Louis

What is the cheapest month to book a flight from Missouri to St. Louis?

Currently, May is the cheapest month in which you can book a flight from Missouri to St. Louis (average of $97). Flying from Missouri to St. Louis in August is currently the most expensive (average of $583). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from MO to STL?

Find hourly flight availability from Missouri to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 14, 2025.

One of the essential ways to save on airfare from Missouri to St. Louis is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 71% on airfare.

Weekly flight availability from Missouri to St. Louis

Explore weekly flight availability from Missouri to St. Louis. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated December 14, 2025.

The most flights from USMO to STL are scheduled on a Sunday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated December 14, 2025.
Get a feel of what it's like to fly with Southwest from Missouri to St. Louis by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Food

7.0

Crew

8.6

Overall

7.9

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Food

7.0

Crew

8.6

Overall

7.9

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Missouri to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly into for flights to St. Louis from Missouri?

    If you book a flight to St. Louis from Missouri, you will be flying to Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis.

  • How long is the flight from Missouri to St. Louis?

    A quick flight from Missouri to St. Louis can take about 6h 45m. Southwest provides one of the quickest options available for as low as $181. There are 236 mi between Missouri and St. Louis. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Missouri to St. Louis?

  • Can I find deals for flights from Missouri to St. Louis that include hotel bookings?

    Yes. In addition to deals on Missouri to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Missouri to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Missouri to St. Louis.

  • Can I find deals for business class flights from Missouri to St. Louis?

    Yes. Cheapflights offers flight deals from Missouri to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Missouri to St. Louis?

    Currently, May is the cheapest month in which you can book a flight from Missouri to St. Louis (average of $97). Flying from Missouri to St. Louis in August is currently the most expensive (average of $583). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Swansea
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Missouri to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Missouri to St. Louis

Discover the top airline that operate flights from Missouri to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$97Average$361FlexibilityNo cancel feeOn-time63%

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