$62+ Cheap flights from Cincinnati to St. Louis (CVG - 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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
CVG — STL
Sep 5 — Sep 121
Round-trip
1 adult, Economy
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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
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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 Cincinnati to St. Louis
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Cheapest flights from Cincinnati to St. LouisExplore the most affordable flight options available from Cincinnati to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 6, 2026.
Explore the most affordable flight options available from Cincinnati to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/412:26 pm -
1 stop5h 56m
Mon 9/76:17 pm -
1 stop16h 04m
Deal found 8/5![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/412:26 pm -
1 stop5h 56m
Fri 9/112:29 pm -
1 stop20h 09m
Deal found 8/5![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2812:26 pm -
1 stop5h 56m
Sun 8/306:17 pm -
1 stop16h 04m
Deal found 8/4![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2712:26 pm -
1 stop5h 56m
Mon 8/316:17 pm -
1 stop16h 04m
Deal found 8/4![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 8/3. 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.
Sun 8/3012:26 pm -
1 stop5h 56m
Sun 9/66:17 pm -
1 stop16h 04m
Deal found 8/3![Frontier logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 9/312:26 pm -
1 stop5h 56m
Thu 9/1010:20 am -
2 stops24h 18m
Deal found 8/3![Frontier logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 8/3. 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.
Mon 8/2412:26 pm -
1 stop5h 56m
Wed 8/266:45 pm -
2 stops15h 36m
Deal found 8/3![Frontier logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/412:26 pm -
1 stop5h 56m
Sun 9/66:17 pm -
1 stop16h 04m
Deal found 8/4![Frontier logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 9/1512:43 pm -
1 stop25h 27m
Fri 9/182:29 pm -
1 stop20h 09m
Deal found 8/1![Frontier logo]()
$183
Best flights from Cincinnati to St. LouisDiscover carefully curated flight deals from Cincinnati to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 6, 2026.
Discover carefully curated flight deals from Cincinnati to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 6, 2026.
This CheapOair deal was found by Cheapflights users on 8/1. 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 8/259:20 pm -
1 stop21h 30m
Tue 9/16:45 pm -
1 stop24h 30m
Deal found 8/1![Frontier logo]()
$210
This Southwest deal was found by Cheapflights users on 8/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:00 pm -
1 stop4h 10m
Fri 9/114:15 pm -
1 stop5h 10m
Deal found 8/4![Southwest logo]()
$281
This Delta deal was found by Cheapflights users on 8/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:28 pm -
1 stop6h 14m
Thu 9/246:00 am -
1 stop4h 20m
Deal found 8/5![Delta logo]()
$299
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 9/1512:43 pm -
2 stops23h 49m
Fri 9/182:29 pm -
1 stop20h 09m
Deal found 8/1![Frontier logo]()
$231
This Travelocity deal was found by Cheapflights users on 8/2. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/239:34 pm -
1 stop22h 41m
Sun 10/258:34 pm -
1 stop10h 47m
Deal found 8/2![Frontier logo]()
$239
This Southwest deal was found by Cheapflights users on 8/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/35:50 pm -
1 stop3h 30m
Mon 10/53:20 pm -
2 stops6h 15m
Deal found 8/4![Southwest logo]()
$304
This CheapOair deal was found by Cheapflights users on 8/5. 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.
Wed 8/127:15 am -
1 stop17h 44m
Sat 8/158:08 pm -
1 stop22h 21m
Deal found 8/5![Frontier logo]()
$310
This Southwest deal was found by Cheapflights users on 8/3. 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 10/127:20 pm -
2 stops6h 15m
Sun 10/185:40 am -
1 stop5h 20m
Deal found 8/3![Southwest logo]()
$343
This Southwest deal was found by Cheapflights users on 8/2. 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 10/237:20 pm -
2 stops6h 15m
Sun 10/255:45 am -
2 stops7h 55m
Deal found 8/2![Southwest logo]()
$353
This CheapOair deal was found by Cheapflights users on 8/1. 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 8/107:15 am -
1 stop17h 44m
Wed 8/128:08 pm -
1 stop22h 21m
Deal found 8/1![Frontier logo]()
$330
Last-minute flights from Cincinnati to St. LouisDiscover last-minute flight deals from Cincinnati to St. Louis. Data last updated August 6, 2026 and is based on user searches.
Discover last-minute flight deals from Cincinnati to St. Louis. Data last updated August 6, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/3. 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.
Mon 8/2412:26 pm -
1 stop5h 56m
Wed 8/266:45 pm -
2 stops15h 36m
Deal found 8/3![Frontier logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2712:26 pm -
1 stop5h 56m
Mon 8/316:17 pm -
1 stop16h 04m
Deal found 8/4![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2812:26 pm -
1 stop5h 56m
Sun 8/306:17 pm -
1 stop16h 04m
Deal found 8/4![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 8/3. 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.
Sun 8/3012:26 pm -
1 stop5h 56m
Sun 9/66:17 pm -
1 stop16h 04m
Deal found 8/3![Frontier logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 9/312:26 pm -
1 stop5h 56m
Thu 9/1010:20 am -
2 stops24h 18m
Deal found 8/3![Frontier logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/412:26 pm -
1 stop5h 56m
Mon 9/76:17 pm -
1 stop16h 04m
Deal found 8/5![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/412:26 pm -
1 stop5h 56m
Fri 9/112:29 pm -
1 stop20h 09m
Deal found 8/5![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/412:26 pm -
1 stop5h 56m
Sun 9/66:17 pm -
1 stop16h 04m
Deal found 8/4![Frontier logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 9/1512:43 pm -
1 stop25h 27m
Fri 9/182:29 pm -
1 stop20h 09m
Deal found 8/1![Frontier logo]()
$183
One-way flights from Cincinnati to St. LouisSearch for one-way flight options from Cincinnati to St. Louis. Find affordable one-way fares based on user searches. Data last updated August 6, 2026.
Search for one-way flight options from Cincinnati to St. Louis. Find affordable one-way fares based on user searches. Data last updated August 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/412:26 pm -
1 stop5h 56m
Deal found 8/5![Frontier logo]()
$62
This Frontier deal was found by Cheapflights users on 8/3. 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 8/2712:26 pm -
1 stop5h 56m
Deal found 8/3![Frontier logo]()
$100
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 8/1112:18 pm -
1 stop6h 19m
Deal found 8/3![Frontier logo]()
$104
This Trip.com deal was found by Cheapflights users on 8/3. 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.
Wed 9/28:30 pm -
1 stop23h 43m
Deal found 8/3![Frontier logo]()
$108
This CheapOair deal was found by Cheapflights users on 8/6. 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 10/136:05 am -
1 stop14h 10m
Deal found 8/6![Frontier logo]()
$111
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 8/1412:53 pm -
1 stop21h 04m
Deal found 8/1![Frontier logo]()
$113
This Frontier deal was found by Cheapflights users on 8/3. 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.
Sat 8/229:28 am -
1 stop7h 43m
Deal found 8/3![Frontier logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/912:43 pm -
2 stops21h 52m
Deal found 8/4![Frontier logo]()
$126
This Frontier deal was found by Cheapflights users on 8/5. 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.
Sun 8/3012:26 pm -
1 stop5h 56m
Deal found 8/5![Frontier logo]()
$129
This CheapOair deal was found by Cheapflights users on 8/4. 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.
Tue 8/189:20 pm -
1 stop21h 30m
Deal found 8/4![Frontier logo]()
$131
Find flight deals from Cincinnati to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from Cincinnati (CVG) 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 August 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $126 (Kiwi.com) |
One-way from | $62 (Kiwi.com) |
Popular in | September |
Cheapest in | January |
Average price | $365 |
Cheapflights Fare Finder
Customize your flight search to find flights from Cincinnati 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 August 6, 2026.
Use the filters below to find and compare flights from Cincinnati to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
CincinnatiSt. Louis
CVG Cincinnati Cinci./N. Kentucky - STL Lambert-St Louis
CVGSTL
Cincinnati Cinci./N. Kentucky
Tue 8/25
9:20 pm-5:50 pm
1 stop21h 30m
Lambert-St Louis
Tue 9/1
6:45 pm-8:15 pm
1 stop24h 30m
$210
CincinnatiSt. Louis
CVG Cincinnati Cinci./N. Kentucky - STL Lambert-St Louis
CVGSTL
Cincinnati Cinci./N. Kentucky
Tue 9/15
12:43 pm-11:32 am
2 stops23h 49m
Lambert-St Louis
Fri 9/18
2:29 pm-11:38 am
1 stop20h 09m
$231
CincinnatiSt. Louis
CVG Cincinnati Cinci./N. Kentucky - STL Lambert-St Louis
CVGSTL
Cincinnati Cinci./N. Kentucky
Fri 10/23
9:34 pm-7:15 pm
1 stop22h 41m
Lambert-St Louis
Sun 10/25
8:34 pm-8:21 am
1 stop10h 47m
$239
Quickest round-trip
CincinnatiSt. Louis
CVG Cincinnati Cinci./N. Kentucky - STL Lambert-St Louis
CVGSTL
Cincinnati Cinci./N. Kentucky
Thu 9/10
7:00 pm-10:10 pm
1 stop4h 10m
Lambert-St Louis
Fri 9/11
4:15 pm-10:25 pm
1 stop5h 10m
$281
CincinnatiSt. Louis
CVG Cincinnati Cinci./N. Kentucky - STL Lambert-St Louis
CVGSTL
Cincinnati Cinci./N. Kentucky
Wed 9/23
6:28 pm-11:42 pm
1 stop6h 14m
Lambert-St Louis
Thu 9/24
6:00 am-11:20 am
1 stop4h 20m
$299
CincinnatiSt. Louis
CVG Cincinnati Cinci./N. Kentucky - STL Lambert-St Louis
CVGSTL
Cincinnati Cinci./N. Kentucky
Sat 10/3
5:50 pm-8:20 pm
1 stop3h 30m
Lambert-St Louis
Mon 10/5
3:20 pm-10:35 pm
2 stops6h 15m
$304
CincinnatiSt. Louis
CVG Cincinnati Cinci./N. Kentucky - STL Lambert-St Louis
CVGSTL
Cincinnati Cinci./N. Kentucky
Wed 8/12
7:15 am-11:59 pm
1 stop17h 44m
Lambert-St Louis
Sat 8/15
8:08 pm-7:29 pm
1 stop22h 21m
$310
CincinnatiSt. Louis
CVG Cincinnati Cinci./N. Kentucky - STL Lambert-St Louis
CVGSTL
Cincinnati Cinci./N. Kentucky
Mon 8/10
7:15 am-11:59 pm
1 stop17h 44m
Lambert-St Louis
Wed 8/12
8:08 pm-7:29 pm
1 stop22h 21m
$330
CincinnatiSt. Louis
CVG Cincinnati Cinci./N. Kentucky - STL Lambert-St Louis
CVGSTL
Cincinnati Cinci./N. Kentucky
Mon 10/12
7:20 pm-12:35 am
2 stops6h 15m
Lambert-St Louis
Sun 10/18
5:40 am-12:00 pm
1 stop5h 20m
$343
CincinnatiSt. Louis
CVG Cincinnati Cinci./N. Kentucky - STL Lambert-St Louis
CVGSTL
Cincinnati Cinci./N. Kentucky
Fri 10/23
7:20 pm-12:35 am
2 stops6h 15m
Lambert-St Louis
Sun 10/25
5:45 am-2:40 pm
2 stops7h 55m
$353
Showing 1-10 of 19 resultsSorted by cheapest first
Compare providers for flights from Cincinnati 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 Cincinnati to St. Louis in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Cincinnati-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Cincinnati-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Cincinnati-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Cincinnati-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 Cincinnati-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 Cincinnati to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Cincinnati with our price prediction graph.
CVG-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 Cincinnati to St. Louis
Prices
More
What is the cheapest month to book a flight from Cincinnati to St. Louis?
Currently, January is the cheapest month in which you can book a flight from Cincinnati to St. Louis (average of $297). Flying from Cincinnati to St. Louis in September is currently the most expensive (average of $624). 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.
How much does it cost to fly round-trip from Cincinnati to St. Louis?
Airfare is below average for this route at the moment.
Cincinnati to St. Louis flights typically cost between $238 and $373 in September.The cheapest round-trip price found within the last 5 days was $126 on Frontier (Sep 4-Sep 7).
What’s the top layover airport for flights from Cincinnati to St. Louis?
Share of 1-stop round-trip flights from Cincinnati to St. Louis chosen by Cheapflights users in the past 12 months, using the same layover each way.
Chicago (ORD) – chosen by Cheapflights users on 50% of 1-stop itineraries from Cincinnati to St. Louis on Cheapflights.
What’s the cheapest layover airport for flights from Cincinnati to St. Louis?
Average round-trip fare for 1-stop flights from Cincinnati to St. Louis, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Chicago (ORD) is the most affordable 1-stop option, with an average round-trip price of $238.
What’s the fastest layover option from Cincinnati to St. Louis?
Shortest average travel time for 1-stop one-way flights from Cincinnati to St. Louis, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Chicago (MDW) have the shortest average one-way travel time for 1-stop routes: 3h 55m.
Which airport typically offers the quickest layover for flights from Cincinnati to St. Louis?
Average layover duration for 1-stop one-way flights from Cincinnati to St. Louis, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Chicago (MDW) offer the fastest connection on this route, with an average layover time of 1h 18m.
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 August 6, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from Cincinnati to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Related info for your journey
Find useful and relevant information for your journey from Cincinnati 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 locationsEdwardsville
Fairview Heights
O'Fallon
Fenton
Swansea
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Farmington
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Cincinnati and St. Louis flights
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Top 4 airlines flying from Cincinnati to St. Louis
Discover the top 4 airlines that operate flights from Cincinnati 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 August 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$236 | Average$376 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$248 | Average$380 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$249 | Average$367 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$254 | Average$365 | FlexibilityNo cancel fee | On-time63% |