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$73+ 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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
CVG — STL
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
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 August 18, 2025.

Round-trip from

$160
(FlightHub)

One-way from

$73
(Priceline)

Popular in

September

Cheapest in

August

Average price

$276
From Cincinnati Cinci./N. Kentucky to Lambert-St Louis
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One-way flight from Cincinnati Cinci./N. Kentucky to Lambert-St Louis
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High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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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 August 18, 2025.

This FlightHub deal was found by Cheapflights users on 8/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/173:52 pmCVG - STL
1 stop24h 12mFrontier
Fri 9/191:57 pmSTL - CVG
1 stop10h 00mFrontier
Deal found 8/17$160
This FlightHub deal was found by Cheapflights users on 8/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/53:20 pmCVG - STL
1 stop18h 46mFrontier
Sun 9/74:00 pmSTL - CVG
1 stop24h 38mFrontier
Deal found 8/17$163
This FlightHub deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/225:42 pmCVG - STL
1 stop20h 51mFrontier
Sun 8/2410:17 amSTL - CVG
1 stop22h 08mFrontier
Deal found 8/14$175
This Frontier deal was found by Cheapflights users on 8/15. 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.
Fri 9/123:58 pmCVG - STL
2 stops18h 08mFrontier
Mon 9/151:57 pmSTL - CVG
1 stop10h 00mFrontier
Deal found 8/15$186
This FlightHub deal was found by Cheapflights users on 8/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/217:26 pmCVG - STL
1 stop18h 36mFrontier
Fri 9/267:55 pmSTL - CVG
1 stop25h 46mFrontier
Deal found 8/15$189
This FlightHub deal was found by Cheapflights users on 8/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/215:59 pmCVG - STL
1 stop19h 57mFrontier
Mon 8/253:16 pmSTL - CVG
1 stop8h 37mFrontier
Deal found 8/15$196
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1712:09 pmCVG - STL
1 stop5h 28mDelta
Sat 9/205:11 pmSTL - CVG
1 stop5h 45mDelta
Deal found 8/14$197
This FlightHub deal was found by Cheapflights users on 8/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2312:47 pmCVG - STL
1 stop22h 50mFrontier
Sun 10/261:41 pmSTL - CVG
1 stop10h 01mFrontier
Deal found 8/16$198
This Southwest deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/184:35 pmCVG - STL
1 stop7h 50mSouthwest
Sat 9/208:20 amSTL - CVG
2 stops12h 45mSouthwest
Deal found 8/14$208
This FlightHub deal was found by Cheapflights users on 8/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/215:59 pmCVG - STL
1 stop19h 57mFrontier
Sat 8/233:02 pmSTL - CVG
1 stop25h 32mFrontier
Deal found 8/15$229

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 18, 2025.
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

Wed 9/17

3:52 pm-3:04 pm

1 stop24h 12m

Lambert-St Louis

Sun 9/21

10:39 am-12:27 am

1 stop12h 48m

$160

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Wed 9/17

3:52 pm-3:04 pm

1 stop24h 12m

Lambert-St Louis

Fri 9/19

1:57 pm-12:57 am

1 stop10h 00m

$160

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Fri 9/5

3:20 pm-9:06 am

1 stop18h 46m

Lambert-St Louis

Sun 9/7

10:39 am-12:27 am

1 stop12h 48m

$163

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Fri 9/12

3:20 pm-9:06 am

1 stop18h 46m

Lambert-St Louis

Mon 9/15

1:57 pm-12:57 am

1 stop10h 00m

$163

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Sun 9/21

7:26 pm-1:02 pm

1 stop18h 36m

Lambert-St Louis

Fri 9/26

7:55 pm-10:41 pm

1 stop25h 46m

$189

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Wed 9/17

12:09 pm-4:37 pm

1 stop5h 28m

Lambert-St Louis

Sat 9/20

5:11 pm-11:56 pm

1 stop5h 45m

$197

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Thu 10/23

12:47 pm-10:37 am

1 stop22h 50m

Lambert-St Louis

Sun 10/26

1:41 pm-12:42 am

1 stop10h 01m

$198

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Mon 9/22

5:20 am-1:02 pm

1 stop8h 42m

$73

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Thu 10/30

11:00 am-5:27 pm

1 stop7h 27m

$73

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Fri 9/5

5:20 am-1:02 pm

1 stop8h 42m

$73

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/15

Showing 1-10 of 13 results
1
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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, August is the cheapest month in which you can book a flight from Cincinnati to St. Louis (average of $311). Flying from Cincinnati to St. Louis in March is currently the most expensive (average of $356). 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 CVG to STL?

Find hourly flight availability from Cincinnati 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 August 18, 2025.

When flying from Cincinnati to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 28% versus a flight in the afternoon.

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 18, 2025.
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
4,246 reviews

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
8.0
Very good
7,981 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,925 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,212 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

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.

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

    Currently priced at $112, 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 $219 and $239, respectively. Frontier is priced at 69% lower than the current average price of a flight leaving 3 months from now.

  • 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, August is the cheapest month in which you can book a flight from Cincinnati to St. Louis (average of $311). Flying from Cincinnati to St. Louis in March is currently the most expensive (average of $356). 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
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
St. Peters
Glencoe
Alton
Chesterfield
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 August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$112Average$200FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$219Average$334FlexibilityNo cancel feeOn-time71%
DeltaCheapest$239Average$476FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$262Average$356FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$297Average$336FlexibilityNo cancel feeOn-time63%

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