$71+ 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 3/17. Fares are subject to change and may not be available on all flights or dates of travel.
CVG — STL
Mar 27 — Apr 31
1 adult, Economy
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Find cheap flights from Cincinnati 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
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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 February 25, 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 February 25, 2026.
This Frontier deal was found by Cheapflights users on 2/25. 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.
Fri 4/102:26 pm
CVG
- STL
1 stop10h 32m
Frontier
Fri 4/178:39 am
STL
- CVG
1 stop9h 44m
Frontier
Deal found 2/25![Frontier logo]()
$160
This Trip.com deal was found by Cheapflights users on 2/24. 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.
Tue 3/107:20 am
CVG
- STL
1 stop27h 29m
Frontier
Wed 3/114:51 pm
STL
- CVG
1 stop6h 50m
Frontier
Deal found 2/24![Frontier logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 2/22. 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 3/87:50 pm
CVG
- STL
1 stop18h 29m
Frontier
Wed 3/118:12 pm
STL
- CVG
2 stops21h 21m
Frontier
Deal found 2/22![Frontier logo]()
$195
This Kiwi.com deal was found by Cheapflights users on 2/23. 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 3/177:41 pm
CVG
- STL
1 stop15h 56m
Frontier
Wed 3/188:12 pm
STL
- CVG
1 stop17h 12m
Frontier
Deal found 2/23![Frontier logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 2/22. 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 3/232:45 pm
CVG
- STL
2 stops20h 47m
Frontier
Wed 3/258:12 pm
STL
- CVG
1 stop17h 12m
Frontier
Deal found 2/22![Frontier logo]()
$203
This Kiwi.com deal was found by Cheapflights users on 2/23. 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 4/177:46 pm
CVG
- STL
1 stop12h 04m
Frontier
Mon 4/204:59 pm
STL
- CVG
1 stop29h 21m
Frontier
Deal found 2/23![Frontier logo]()
$218
This Expedia deal was found by Cheapflights users on 2/25. 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.
Thu 4/27:20 am
CVG
- STL
1 stop27h 28m
Frontier
Mon 4/68:19 pm
STL
- CVG
1 stop17h 03m
Frontier
Deal found 2/25![Frontier logo]()
$224
This Expedia deal was found by Cheapflights users on 2/22. 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 3/227:20 am
CVG
- STL
1 stop27h 29m
Frontier
Sun 3/2911:21 am
STL
- CVG
1 stop6h 12m
Frontier
Deal found 2/22![Frontier logo]()
$230
This Expedia deal was found by Cheapflights users on 2/25. 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.
Mon 3/165:10 am
CVG
- STL
1 stop13h 30m
Frontier
Fri 3/204:51 pm
STL
- CVG
1 stop6h 50m
Frontier
Deal found 2/25![Frontier logo]()
$240
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 February 25, 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 February 25, 2026.
This American Airlines deal was found by Cheapflights users on 2/25. 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.
Wed 4/18:52 am
CVG
- STL
1 stop5h 47m
American Airlines
Sun 4/56:57 pm
STL
- CVG
1 stop4h 02m
American Airlines
Deal found 2/25![American Airlines logo]()
$266
This Delta deal was found by Cheapflights users on 2/22. 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.
Fri 5/158:16 pm
CVG
- STL
1 stop4h 43m
Delta
Mon 5/187:01 pm
STL
- CVG
1 stop4h 03m
Delta
Deal found 2/22![Delta logo]()
$316
This Southwest deal was found by Cheapflights users on 2/22. 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 3/316:30 am
CVG
- STL
2 stops9h 05m
Southwest
Wed 4/110:30 am
STL
- CVG
1 stop4h 00m
Southwest
Deal found 2/22![Southwest logo]()
$320
This American Airlines deal was found by Cheapflights users on 2/25. 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 5/154:13 pm
CVG
- STL
1 stop8h 43m
American Airlines
Mon 5/187:05 am
STL
- CVG
1 stop6h 33m
American Airlines
Deal found 2/25![American Airlines logo]()
$300
This Delta deal was found by Cheapflights users on 2/22. 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.
Thu 5/287:04 am
CVG
- STL
1 stop6h 16m
Delta
Mon 6/17:01 pm
STL
- CVG
1 stop4h 33m
Delta
Deal found 2/22![Delta logo]()
$327
This Southwest deal was found by Cheapflights users on 2/23. 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 3/178:55 am
CVG
- STL
2 stops7h 00m
Southwest
Wed 3/1810:15 am
STL
- CVG
2 stops9h 00m
Southwest
Deal found 2/23![Southwest logo]()
$336
This Southwest deal was found by Cheapflights users on 2/22. 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 5/295:45 am
CVG
- STL
1 stop6h 05m
Southwest
Sat 5/305:40 am
STL
- CVG
2 stops7h 20m
Southwest
Deal found 2/22![Southwest logo]()
$342
This Southwest deal was found by Cheapflights users on 2/25. 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 8/156:40 am
CVG
- STL
2 stops7h 05m
Southwest
Sun 8/168:30 am
STL
- CVG
1 stop6h 10m
Southwest
Deal found 2/25![Southwest logo]()
$342
This Southwest deal was found by Cheapflights users on 2/22. 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 4/43:50 pm
CVG
- STL
1 stop7h 20m
Southwest
Sat 4/115:40 am
STL
- CVG
2 stops7h 20m
Southwest
Deal found 2/22![Southwest logo]()
$353
Last-minute flights from Cincinnati to St. LouisDiscover last-minute flight deals from Cincinnati to St. Louis. Data last updated February 25, 2026 and is based on user searches.
Discover last-minute flight deals from Cincinnati to St. Louis. Data last updated February 25, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 2/23. 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.
Mon 3/27:14 pm
CVG
- STL
1 stop5h 45m
Frontier
Thu 3/53:49 pm
STL
- CVG
1 stop8h 10m
Frontier
Deal found 2/23![Frontier logo]()
$251
This Kiwi.com deal was found by Cheapflights users on 2/22. 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 3/611:58 am
CVG
- STL
1 stop22h 51m
Frontier
Sun 3/159:05 pm
STL
- CVG
2 stops44h 26m
Frontier
Deal found 2/22![Frontier logo]()
$262
This Kiwi.com deal was found by Cheapflights users on 2/22. 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 3/87:50 pm
CVG
- STL
1 stop18h 29m
Frontier
Wed 3/118:12 pm
STL
- CVG
2 stops21h 21m
Frontier
Deal found 2/22![Frontier logo]()
$195
This Trip.com deal was found by Cheapflights users on 2/24. 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.
Tue 3/107:20 am
CVG
- STL
1 stop27h 29m
Frontier
Wed 3/114:51 pm
STL
- CVG
1 stop6h 50m
Frontier
Deal found 2/24![Frontier logo]()
$170
This Expedia deal was found by Cheapflights users on 2/25. 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.
Thu 3/121:20 pm
CVG
- STL
1 stop10h 59m
Frontier
Mon 3/168:10 pm
STL
- CVG
1 stop10h 13m
Frontier
Deal found 2/25![Frontier logo]()
$250
This Expedia deal was found by Cheapflights users on 2/25. 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.
Mon 3/165:10 am
CVG
- STL
1 stop13h 30m
Frontier
Fri 3/204:51 pm
STL
- CVG
1 stop6h 50m
Frontier
Deal found 2/25![Frontier logo]()
$240
This Kiwi.com deal was found by Cheapflights users on 2/23. 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 3/177:41 pm
CVG
- STL
1 stop15h 56m
Frontier
Wed 3/188:12 pm
STL
- CVG
1 stop17h 12m
Frontier
Deal found 2/23![Frontier logo]()
$197
This Expedia deal was found by Cheapflights users on 2/22. 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 3/227:20 am
CVG
- STL
1 stop27h 29m
Frontier
Sun 3/2911:21 am
STL
- CVG
1 stop6h 12m
Frontier
Deal found 2/22![Frontier logo]()
$230
This Kiwi.com deal was found by Cheapflights users on 2/22. 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 3/232:45 pm
CVG
- STL
2 stops20h 47m
Frontier
Wed 3/258:12 pm
STL
- CVG
1 stop17h 12m
Frontier
Deal found 2/22![Frontier logo]()
$203
This American Airlines deal was found by Cheapflights users on 2/22. 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.
Tue 3/316:36 am
CVG
- STL
1 stop8h 31m
American Airlines
Wed 4/12:29 pm
STL
- CVG
1 stop7h 56m
American Airlines
Deal found 2/22![American Airlines logo]()
$243
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 February 25, 2026.
Search for one-way flight options from Cincinnati to St. Louis. Find affordable one-way fares based on user searches. Data last updated February 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/23. 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 3/177:41 pm
CVG
- STL
1 stop15h 56m
Frontier
Deal found 2/23![Frontier logo]()
$71
This Trip.com deal was found by Cheapflights users on 2/23. 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.
Sun 3/87:50 pm
CVG
- STL
1 stop18h 29m
Frontier
Deal found 2/23![Frontier logo]()
$73
This Kiwi.com deal was found by Cheapflights users on 2/25. 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 4/178:17 pm
CVG
- STL
1 stop24h 15m
Frontier
Deal found 2/25![Frontier logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 2/23. 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 3/107:43 pm
CVG
- STL
1 stop15h 54m
Frontier
Deal found 2/23![Frontier logo]()
$78
This Kiwi.com deal was found by Cheapflights users on 2/22. 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 3/157:41 pm
CVG
- STL
1 stop18h 53m
Frontier
Deal found 2/22![Frontier logo]()
$79
This Priceline deal was found by Cheapflights users on 2/25. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/912:20 pm
CVG
- STL
1 stop6h 14m
Frontier
Deal found 2/25![Frontier logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 2/23. 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 4/248:17 pm
CVG
- STL
1 stop24h 15m
Frontier
Deal found 2/23![Frontier logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 2/23. 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 5/87:59 pm
CVG
- STL
1 stop24h 13m
Frontier
Deal found 2/23![Frontier logo]()
$83
This Frontier deal was found by Cheapflights users on 2/25. 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.
Fri 4/102:26 pm
CVG
- STL
1 stop10h 32m
Frontier
Deal found 2/25![Frontier logo]()
$86
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 February 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $160 (Frontier) |
One-way from | $71 (Kiwi.com) |
Popular in | September |
Cheapest in | August |
Average price | $514 |
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 February 25, 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
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Wed 4/1
8:52 am-1:39 pm
1 stop5h 47m
Lambert-St Louis
Sun 4/5
6:57 pm-11:59 pm
1 stop4h 02m
$266
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Fri 5/15
4:13 pm-11:56 pm
1 stop8h 43m
Lambert-St Louis
Mon 5/18
7:05 am-2:38 pm
1 stop6h 33m
$300
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Fri 5/15
8:16 pm-11:59 pm
1 stop4h 43m
Lambert-St Louis
Mon 5/18
7:01 pm-12:04 am
1 stop4h 03m
$316
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Tue 3/31
6:30 am-2:35 pm
2 stops9h 05m
Lambert-St Louis
Wed 4/1
10:30 am-3:30 pm
1 stop4h 00m
$320
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Thu 5/28
7:04 am-12:20 pm
1 stop6h 16m
Lambert-St Louis
Mon 6/1
7:01 pm-12:34 am
1 stop4h 33m
$327
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Tue 3/17
8:55 am-2:55 pm
2 stops7h 00m
Lambert-St Louis
Wed 3/18
10:15 am-8:15 pm
2 stops9h 00m
$336
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Fri 5/29
5:45 am-10:50 am
1 stop6h 05m
Lambert-St Louis
Sat 5/30
5:40 am-2:00 pm
2 stops7h 20m
$342
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Sat 8/15
6:40 am-12:45 pm
2 stops7h 05m
Lambert-St Louis
Sun 8/16
8:30 am-3:40 pm
1 stop6h 10m
$342
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Sat 4/4
3:50 pm-10:10 pm
1 stop7h 20m
Lambert-St Louis
Sat 4/11
5:40 am-2:00 pm
2 stops7h 20m
$353
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Tue 5/19
8:35 am-11:30 am
1 stop3h 55m
$118
Showing 1-10 of 21 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 February.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | 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
What is the cheapest month to book a flight from Cincinnati to St. Louis?
Currently, October is the cheapest month in which you can book a flight from Cincinnati to St. Louis (average of $85). Flying from Cincinnati to St. Louis in April is currently the most expensive (average of $274). 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?
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 February 25, 2026.
See what other customers who have flown with Southwest, Delta, and United 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.
Boarding
8.1
Food
7.0
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Food
7.0
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Food
7.0
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Food
7.0
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Food
7.0
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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
O'Fallon
Swansea
Fairview Heights
Fenton
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus
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Cincinnati and St. Louis flights
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Top 4 airlines flying from Cincinnati to St. Louis
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$218 | Average$289 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$236 | Average$472 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$254 | Average$332 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$262 | Average$420 | FlexibilityNo cancel fee | On-time69% |