$111+ Cheap flights from Kansas City to St. Louis (MCI - STL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — STL
Oct 9 — Oct 161
Round-trip
1 adult, Economy
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Find cheap flights from Kansas City to St. Louis with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Kansas City to St. Louis
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Best
Last-minute
One-way
Cheapest flights from Kansas City to St. LouisExplore the most affordable flight options available from Kansas City to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 9, 2026.
Explore the most affordable flight options available from Kansas City to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 9, 2026.
This Expedia deal was found by Cheapflights users on 9/5. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2710:30 pm -
1 stop12h 47m
Mon 9/2812:17 pm -
1 stop9h 28m
Deal found 9/5![Frontier logo]()
$230
This Frontier deal was found by Cheapflights users on 9/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2410:30 pm -
1 stop12h 47m
Mon 9/2812:17 pm -
1 stop9h 28m
Deal found 9/4![Frontier logo]()
$240
This CheapOair deal was found by Cheapflights users on 9/8. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/510:30 pm -
1 stop13h 02m
Fri 10/98:00 pm -
1 stop23h 48m
Deal found 9/8![Frontier logo]()
$244
This CheapOair deal was found by Cheapflights users on 9/5. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/258:32 pm -
1 stop22h 45m
Sun 9/2712:27 pm -
1 stop9h 18m
Deal found 9/5![Frontier logo]()
$250
This Frontier deal was found by Cheapflights users on 9/8. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/18:32 pm -
1 stop22h 45m
Mon 10/58:10 pm -
1 stop23h 27m
Deal found 9/8![Frontier logo]()
$258
This Frontier deal was found by Cheapflights users on 9/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2410:30 pm -
1 stop12h 47m
Sun 9/2712:27 pm -
1 stop9h 18m
Deal found 9/7![Frontier logo]()
$260
This CheapOair deal was found by Cheapflights users on 9/8. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:43 pm -
1 stop22h 32m
Mon 10/268:00 pm -
1 stop23h 47m
Deal found 9/8![Frontier logo]()
$268
This CheapOair deal was found by Cheapflights users on 9/5. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:43 pm -
1 stop22h 31m
Mon 11/27:59 pm -
1 stop23h 48m
Deal found 9/5![Frontier logo]()
$269
This CheapOair deal was found by Cheapflights users on 9/4. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/188:32 pm -
1 stop22h 45m
Sun 9/208:10 pm -
1 stop23h 27m
Deal found 9/4![Frontier logo]()
$270
This Southwest deal was found by Cheapflights users on 9/8. 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.
Thu 10/11:50 pm -
Nonstop1h 05m
Mon 10/59:50 pm -
Nonstop1h 10m
Deal found 9/8![Southwest logo]()
$277
Best flights from Kansas City to St. LouisDiscover carefully curated flight deals from Kansas City to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 9, 2026.
Discover carefully curated flight deals from Kansas City to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 9, 2026.
This Southwest deal was found by Cheapflights users on 9/7. 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.
Mon 10/196:00 pm -
Nonstop1h 05m
Thu 10/229:50 pm -
Nonstop1h 10m
Deal found 9/7![Southwest logo]()
$277
This Southwest deal was found by Cheapflights users on 9/8. 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 10/612:55 pm -
Nonstop1h 05m
Tue 10/138:55 pm -
Nonstop1h 10m
Deal found 9/8![Southwest logo]()
$277
This Southwest deal was found by Cheapflights users on 9/7. 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.
Mon 10/52:10 pm -
1 stop4h 50m
Thu 10/89:50 pm -
Nonstop1h 10m
Deal found 9/7![Southwest logo]()
$287
This Southwest deal was found by Cheapflights users on 9/9. 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 10/91:50 pm -
Nonstop1h 05m
Wed 10/141:25 pm -
Nonstop1h 05m
Deal found 9/9![Southwest logo]()
$295
This Southwest deal was found by Cheapflights users on 9/6. 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.
Sat 10/102:55 pm -
Nonstop1h 05m
Fri 10/163:05 pm -
Nonstop1h 05m
Deal found 9/6![Southwest logo]()
$367
This Southwest deal was found by Cheapflights users on 9/5. 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 10/301:50 pm -
Nonstop1h 05m
Mon 11/28:25 am -
Nonstop1h 10m
Deal found 9/5![Southwest logo]()
$367
Last-minute flights from Kansas City to St. LouisDiscover last-minute flight deals from Kansas City to St. Louis. Data last updated September 9, 2026 and is based on user searches.
Discover last-minute flight deals from Kansas City to St. Louis. Data last updated September 9, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 9/4. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/188:32 pm -
1 stop22h 45m
Sun 9/208:10 pm -
1 stop23h 27m
Deal found 9/4![Frontier logo]()
$270
This Frontier deal was found by Cheapflights users on 9/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2410:30 pm -
1 stop12h 47m
Mon 9/2812:17 pm -
1 stop9h 28m
Deal found 9/4![Frontier logo]()
$240
This Frontier deal was found by Cheapflights users on 9/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2410:30 pm -
1 stop12h 47m
Sun 9/2712:27 pm -
1 stop9h 18m
Deal found 9/7![Frontier logo]()
$260
This CheapOair deal was found by Cheapflights users on 9/5. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/258:32 pm -
1 stop22h 45m
Sun 9/2712:27 pm -
1 stop9h 18m
Deal found 9/5![Frontier logo]()
$250
This Expedia deal was found by Cheapflights users on 9/5. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2710:30 pm -
1 stop12h 47m
Mon 9/2812:17 pm -
1 stop9h 28m
Deal found 9/5![Frontier logo]()
$230
This Frontier deal was found by Cheapflights users on 9/8. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/18:32 pm -
1 stop22h 45m
Mon 10/58:10 pm -
1 stop23h 27m
Deal found 9/8![Frontier logo]()
$258
This Southwest deal was found by Cheapflights users on 9/8. 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.
Thu 10/11:50 pm -
Nonstop1h 05m
Mon 10/59:50 pm -
Nonstop1h 10m
Deal found 9/8![Southwest logo]()
$277
This CheapOair deal was found by Cheapflights users on 9/8. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/510:30 pm -
1 stop13h 02m
Fri 10/98:00 pm -
1 stop23h 48m
Deal found 9/8![Frontier logo]()
$244
This CheapOair deal was found by Cheapflights users on 9/8. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:43 pm -
1 stop22h 32m
Mon 10/268:00 pm -
1 stop23h 47m
Deal found 9/8![Frontier logo]()
$268
This CheapOair deal was found by Cheapflights users on 9/5. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:43 pm -
1 stop22h 31m
Mon 11/27:59 pm -
1 stop23h 48m
Deal found 9/5![Frontier logo]()
$269
One-way flights from Kansas City to St. LouisSearch for one-way flight options from Kansas City to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 9, 2026.
Search for one-way flight options from Kansas City to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 9, 2026.
This CheapOair deal was found by Cheapflights users on 9/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/68:32 pm -
1 stop27h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Frontier logo]()
$111
This Frontier deal was found by Cheapflights users on 9/8. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/510:30 pm -
1 stop13h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 11/108:43 pm -
1 stop18h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Thu 11/58:43 pm -
1 stop22h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$131
This Frontier deal was found by Cheapflights users on 9/5. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2410:30 pm -
1 stop12h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Thu 10/158:43 pm -
1 stop22h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$137
This Trip.com deal was found by Cheapflights users on 9/4. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/188:32 pm -
1 stop22h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$139
This CheapOair deal was found by Cheapflights users on 9/8. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/228:32 pm -
1 stop22h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Frontier logo]()
$141
Find flight deals from Kansas City to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from Kansas City (MCI) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $230 (Expedia) |
One-way from | $111 (CheapOair) |
Popular in | February |
Cheapest in | December |
Average price | $522 |
Cheapflights Fare Finder
Customize your flight search to find flights from Kansas City 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 7,457,451 searches. Data last updated September 9, 2026.
Use the filters below to find and compare flights from Kansas City to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
Kansas CitySt. Louis
MCI Kansas City - STL Lambert-St Louis
MCISTL
Kansas City
Thu 12/3
12:20 pm-1:20 pm
Nonstop1h 00m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$184
Kansas CitySt. Louis
MCI Kansas City - STL Lambert-St Louis
MCISTL
Kansas City
Fri 11/6
6:05 pm-7:10 pm
Nonstop1h 05m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$184
Kansas CitySt. Louis
MCI Kansas City - STL Lambert-St Louis
MCISTL
Kansas City
Thu 11/5
8:20 am-9:30 am
Nonstop1h 10m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$184
Kansas CitySt. Louis
MCI Kansas City - STL Lambert-St Louis
MCISTL
Kansas City
Wed 11/4
12:20 pm-1:20 pm
Nonstop1h 00m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$184
Kansas CitySt. Louis
MCI Kansas City - STL Lambert-St Louis
MCISTL
Kansas City
Sat 12/5
11:30 am-7:40 pm
2 stops8h 10m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$199
Kansas CitySt. Louis
MCI Kansas City - STL Lambert-St Louis
MCISTL
Kansas City
Thu 10/8
6:19 am-2:10 pm
1 stop7h 51m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$219
Kansas CitySt. Louis
MCI Kansas City - STL Lambert-St Louis
MCISTL
Kansas City
Sun 12/6
12:40 pm-1:45 pm
Nonstop1h 05m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$221
Kansas CitySt. Louis
MCI Kansas City - STL Lambert-St Louis
MCISTL
Kansas City
Sun 10/4
3:20 pm-4:25 pm
Nonstop1h 05m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$221
Kansas CitySt. Louis
MCI Kansas City - STL Lambert-St Louis
MCISTL
Kansas City
Sat 12/5
6:00 am-12:10 pm
1 stop6h 10m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$229
Kansas CitySt. Louis
MCI Kansas City - STL Lambert-St Louis
MCISTL
Kansas City
Sat 11/7
9:49 am-2:34 pm
1 stop4h 45m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$229
Showing 1-10 of 17 resultsSorted by cheapest first
Compare providers for flights from Kansas City to St. Louis
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Kansas City to St. Louis in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Kansas City-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Kansas City-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Kansas City-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Kansas City-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Kansas City-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Kansas City to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Kansas City with our price prediction graph.
MCI-STL
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 Kansas City to St. Louis
What is the cheapest month to book a flight from Kansas City to St. Louis?
Currently, December is the cheapest month in which you can book a flight from Kansas City to St. Louis (average of $271). Flying from Kansas City to St. Louis in February is currently the most expensive (average of $765). 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 MCI to STL?
Find hourly flight availability from Kansas City 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 September 9, 2026.
When flying from Kansas City to St. Louis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
The best insider tips for Kansas City to St. Louis flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Kansas City to St. Louis trip
Our travel experts
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 September 9, 2026.
Read reviews from past customers who have flown Southwest from Kansas City to St. Louis. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Comfort
8.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Related info for your journey
Find useful and relevant information for your journey from Kansas City to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsFairview Heights
O'Fallon
Fenton
Swansea
Eureka
Maryland Heights
Collinsville
Wentzville
Edwardsville
Glencoe
Chesterfield
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Kansas City and St. Louis flights
Browse other Kansas City and St. Louis flight options. Last updated on September 9, 2026.
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Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 9, 2026.
Top airline flying from Kansas City to St. Louis
Discover the top airline that operate flights from Kansas City 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 7,457,451 searches. Data last updated September 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$171 | Average$525 | FlexibilityNo cancel fee | On-time63% |