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$108+ 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 3/26. Fares are subject to change and may not be available on all flights or dates of travel.
CVG — STL
Mar 19 — Mar 261
Wed 3/19
Wed 3/26
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 March 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$152
(Frontier)

One-way from

$108
(Trip.com)

Popular in

March

Cheapest in

May

Average price

$486
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
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One-way flight from Cincinnati Cinci./N. Kentucky to Lambert-St Louis
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Highest demand for flights based on searches. 15% potential increase in price ($63 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 14, 2025.

This Frontier deal was found by Cheapflights users on 3/13. 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 4/12:01 pmCVG - STL
1 stop10h 45mFrontier
Mon 4/76:38 pmSTL - CVG
1 stop9h 31mFrontier
Deal found 3/13$152
This Delta deal was found by Cheapflights users on 3/13. 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.
Tue 4/15:49 pmCVG - STL
1 stop6h 42mDelta
Tue 4/87:05 amSTL - CVG
1 stop5h 57mDelta
Deal found 3/13$232
This Southwest deal was found by Cheapflights users on 3/13. 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 3/315:50 pmCVG - STL
1 stop6h 50mSouthwest
Wed 4/26:15 amSTL - CVG
1 stop5h 40mSouthwest
Deal found 3/13$247
This American Airlines deal was found by Cheapflights users on 3/13. 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 4/254:19 pmCVG - STL
1 stop8h 14mAmerican Airlines
Sun 4/275:45 amSTL - CVG
1 stop3h 38mAmerican Airlines
Deal found 3/13$275
This United Airlines deal was found by Cheapflights users on 3/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/187:00 amCVG - STL
1 stop16h 45mUnited Airlines
Tue 7/18:10 amSTL - CVG
1 stop6h 06mUnited Airlines
Deal found 3/13$282
This Mytrip deal was found by Cheapflights users on 3/13. 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.
Fri 5/910:20 amCVG - STL
3 stops23h 55mMultiple Airlines
Sun 5/1110:10 amSTL - CVG
1 stop25h 01mMultiple Airlines
Deal found 3/13$311

Find flights from Cincinnati to St. Louis within your budget

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 March 14, 2025.

Fly from

Cincinnati

Fly to

St. Louis

Route

Depart

Return

Price

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Tue 4/1

2:01 pm-11:46 pm

1 stop10h 45m

Lambert-St Louis

Mon 4/7

6:38 pm-5:09 am

1 stop9h 31m

$152

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Tue 4/1

5:49 pm-11:31 pm

1 stop6h 42m

Lambert-St Louis

Tue 4/8

7:05 am-2:02 pm

1 stop5h 57m

$232

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Mon 3/31

5:50 pm-11:40 pm

1 stop6h 50m

Lambert-St Louis

Wed 4/2

6:15 am-12:55 pm

1 stop5h 40m

$247

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Fri 4/25

4:19 pm-11:33 pm

1 stop8h 14m

Lambert-St Louis

Sun 4/27

5:45 am-10:23 am

1 stop3h 38m

$275

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Wed 6/18

7:00 am-10:45 pm

1 stop16h 45m

Lambert-St Louis

Tue 7/1

8:10 am-3:16 pm

1 stop6h 06m

$282

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Fri 5/9

10:20 am-9:15 am

3 stops23h 55m

Lambert-St Louis

Sun 5/11

10:10 am-12:11 pm

1 stop25h 01m

$311

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Wed 3/26

12:17 pm-11:49 pm

1 stop12h 32m

$108

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Wed 3/26

6:30 am-6:41 pm

3 stops37h 11m

$186

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Tue 3/25

7:30 pm-7:25 am

2 stops12h 55m

$195

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Wed 3/19

12:30 pm-9:49 pm

2 stops10h 19m

$692

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/14

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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*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 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.
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.

Travel insights for flights from Cincinnati to St. Louis

Get recent, data-driven insights about flights from Cincinnati to St. Louis including ideal travel times, pricing trends, and more.

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 March 14, 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.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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 March 14, 2025.
To help decide which airline to fly from Cincinnati to St. Louis, see what other customers have to say about Southwest, Delta and United Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,290 reviews

Boarding

8.2

Crew

8.7

Food

7.1

Overall

8.1

Entertainment

7.6

Comfort

8.1

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Southwest
8.1
Very good
4,290 reviews
Southwest
8.1
Very good
4,290 reviews

Boarding

8.2

Crew

8.7

Food

7.1

Overall

8.1

Entertainment

7.6

Comfort

8.1

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Delta
8.0
Very good
7,936 reviews
Southwest
8.1
Very good
4,290 reviews

Boarding

8.2

Crew

8.7

Food

7.1

Overall

8.1

Entertainment

7.6

Comfort

8.1

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

United Airlines
7.4
Good
8,620 reviews
Southwest
8.1
Very good
4,290 reviews

Boarding

8.2

Crew

8.7

Food

7.1

Overall

8.1

Entertainment

7.6

Comfort

8.1

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,290 reviews

Boarding

8.2

Crew

8.7

Food

7.1

Overall

8.1

Entertainment

7.6

Comfort

8.1

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Frontier
6.0
Okay
3,289 reviews
Southwest
8.1
Very good
4,290 reviews

Boarding

8.2

Crew

8.7

Food

7.1

Overall

8.1

Entertainment

7.6

Comfort

8.1

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 $152, 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 Delta and Southwest - these airlines can fly you to your destination from $232 and $247, respectively. Frontier is priced at 56% 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 ($108), Southwest ($195), and United Airlines ($692).

  • 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 Cincinnati?

Book flights to Cincinnati if you plan to visit one of these locations
Fenton
Fairview Heights
Maryland Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Alton
Farmington
Chesterfield

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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 March 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$112Average$214FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$175Average$339FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$227Average$336FlexibilityNo cancel feeOn-time69%
DeltaCheapest$231Average$472FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$312Average$363FlexibilityNo cancel feeOn-time63%
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