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$64+ 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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
CVG — STL
Feb 17 — Feb 241
Tue 2/17
Tue 2/24
1 adult, Economy
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Cheap 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 January 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$175
(Trip.com)

One-way from

$64
(Expedia)

Popular in

September

Cheapest in

August

Average price

$298
Provider with most accurate pricing for Cincinnati Cinci./N. Kentucky-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Cincinnati Cinci./N. Kentucky-Lambert-St Louis flights.
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From Cincinnati Cinci./N. Kentucky to Lambert-St Louis
Search Deals
One-way flight from Cincinnati Cinci./N. Kentucky to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($16 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Cincinnati to St. Louis

Cheapest flights from Cincinnati to St. Louis
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 January 18, 2026.

This Trip.com deal was found by Cheapflights users on 1/16. 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 2/34:23 pm
CVG
-
STL
1 stop8h 10m
Frontier
Wed 2/43:46 pm
STL
-
CVG
1 stop28h 02m
Frontier
Deal found 1/16$175
This Frontier deal was found by Cheapflights users on 1/15. 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.
Wed 2/183:20 pm
CVG
-
STL
1 stop8h 07m
Frontier
Thu 2/193:49 pm
STL
-
CVG
1 stop8h 10m
Frontier
Deal found 1/15$181
This Mytrip deal was found by Cheapflights users on 1/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/319:00 am
CVG
-
STL
1 stop15h 33m
Frontier
Wed 2/45:42 pm
STL
-
CVG
1 stop21h 47m
Frontier
Deal found 1/16$190
This Kiwi.com deal was found by Cheapflights users on 1/17. 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 2/168:49 pm
CVG
-
STL
2 stops35h 02m
Frontier
Mon 2/231:54 pm
STL
-
CVG
1 stop8h 48m
Frontier
Deal found 1/17$194
This Frontier deal was found by Cheapflights users on 1/18. 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 2/25:39 pm
CVG
-
STL
1 stop6h 54m
Frontier
Fri 2/611:18 am
STL
-
CVG
1 stop11h 08m
Frontier
Deal found 1/18$195
This Frontier deal was found by Cheapflights users on 1/17. 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.
Tue 3/33:20 pm
CVG
-
STL
1 stop8h 07m
Frontier
Tue 3/104:51 pm
STL
-
CVG
1 stop6h 50m
Frontier
Deal found 1/17$197
This Frontier deal was found by Cheapflights users on 1/15. 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 1/225:39 pm
CVG
-
STL
1 stop6h 54m
Frontier
Mon 1/2610:16 am
STL
-
CVG
1 stop12h 10m
Frontier
Deal found 1/15$202
This Mytrip deal was found by Cheapflights users on 1/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/2412:30 pm
CVG
-
STL
1 stop12h 03m
Frontier
Wed 1/285:42 pm
STL
-
CVG
1 stop21h 47m
Frontier
Deal found 1/17$211
This Kiwi.com deal was found by Cheapflights users on 1/18. 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 2/151:07 pm
CVG
-
STL
1 stop18h 44m
Multiple Airlines
Sun 2/223:49 pm
STL
-
CVG
2 stops32h 10m
Multiple Airlines
Deal found 1/18$231
This Kiwi.com deal was found by Cheapflights users on 1/17. 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 2/261:07 pm
CVG
-
STL
1 stop18h 44m
Multiple Airlines
Sun 3/13:49 pm
STL
-
CVG
1 stop20h 20m
Multiple Airlines
Deal found 1/17$236

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 January 18, 2026.
Use the filters below to find and compare flights from Cincinnati to St. Louis that are best for you.

Fly from

Cincinnati

Fly to

St. Louis

Route

Depart

Return

Price

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Tue 3/3

3:20 pm-10:27 pm

1 stop8h 07m

Lambert-St Louis

Tue 3/10

4:51 pm-12:41 am

1 stop6h 50m

$175

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Wed 2/18

3:20 pm-10:27 pm

1 stop8h 07m

Lambert-St Louis

Thu 2/19

3:49 pm-12:59 am

1 stop8h 10m

$181

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Mon 2/16

8:49 pm-6:51 am

2 stops35h 02m

Lambert-St Louis

Mon 2/23

1:54 pm-11:42 pm

1 stop8h 48m

$194

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Mon 2/2

5:39 pm-11:33 pm

1 stop6h 54m

Lambert-St Louis

Fri 2/6

11:18 am-11:26 pm

1 stop11h 08m

$195

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Sun 2/15

1:07 pm-6:51 am

1 stop18h 44m

Lambert-St Louis

Sun 2/22

3:49 pm-12:59 am

2 stops32h 10m

$231

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Thu 2/26

1:07 pm-6:51 am

1 stop18h 44m

Lambert-St Louis

Sun 3/1

3:49 pm-1:09 pm

1 stop20h 20m

$236

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Thu 2/26

1:07 pm-6:51 am

1 stop18h 44m

Lambert-St Louis

Sun 3/1

10:11 pm-12:59 am

2 stops25h 48m

$241

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Tue 2/3

9:07 am-6:51 am

2 stops22h 44m

Lambert-St Louis

Wed 2/4

3:46 pm-8:48 pm

1 stop28h 02m

$241

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Sun 2/15

1:07 pm-6:51 am

1 stop18h 44m

Lambert-St Louis

Sun 2/22

3:49 pm-12:59 am

1 stop8h 10m

$254

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Wed 2/11

12:01 pm-4:37 pm

1 stop5h 36m

$128

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/17

Showing 1-10 of 17 results
1
2

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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • 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 Expedia the most. Expedia 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.
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 $275). 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.

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 January 18, 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.
Southwest
8.0
Very good
4,262 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

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
Southwest
8.0
Very good
4,262 reviews
Southwest
8.0
Very good
4,262 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

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
Delta
7.9
Good
8,075 reviews
Southwest
8.0
Very good
4,262 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

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
United Airlines
7.4
Good
9,176 reviews
Southwest
8.0
Very good
4,262 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

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
American Airlines
7.2
Good
11,160 reviews
Southwest
8.0
Very good
4,262 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

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
Frontier
5.7
Fair
3,058 reviews
Southwest
8.0
Very good
4,262 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

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 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.

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

    A quick flight from Cincinnati to St. Louis can take about 8h 07m. Frontier provides one of the quickest options available for as low as $175. There are 307 mi between Cincinnati and St. Louis.

  • What are the cheapest airlines flying from Cincinnati to St. Louis round-trip?

    Currently priced at $85, Frontier will fly you from Cincinnati to St. Louis and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and Delta - these airlines can fly you to your destination from $218 and $236, respectively. Frontier is priced at 76% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Cincinnati to St. Louis one-way?

    The cheapest airlines for a one-way flight from Cincinnati to St. Louis are Frontier ($75), Delta ($87), and Southwest ($88).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Cincinnati 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 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 $275). 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
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus

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Alternative routes for Cincinnati to St. Louis

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Top 5 airlines flying from Cincinnati to St. Louis

Discover the top 5 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 January 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$85Average$200FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$218Average$287FlexibilityNo cancel feeOn-time71%
DeltaCheapest$236Average$472FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$254Average$336FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$276Average$420FlexibilityNo cancel feeOn-time69%

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