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Cheap flights from Cincinnati to St. Louis from $67

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Cincinnati to St. Louis departing on 2/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Cincinnati to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
1:07 pm - 6:51 am
CVG
-
STL
18h 44m
1 stop
Frontier Logo
3:49 pm - 9:25 pm
STL
-
CVG
28h 36m
1 stop
$174Frontier
Fri, Feb 27 - Tue, Mar 3
Frontier Logo
3:20 pm - 6:51 am
CVG
-
STL
16h 31m
2 stops
Frontier Logo
8:17 pm - 5:32 pm
STL
-
CVG
20h 15m
1 stop
$238Frontier
Tue, Feb 24 - Sat, Feb 28
Frontier Logo
7:00 am - 1:09 pm
CVG
-
STL
7h 09m
1 stop
Frontier Logo
8:17 pm - 5:32 pm
STL
-
CVG
20h 15m
1 stop
$247Frontier
Mon, Feb 23 - Wed, Feb 25
Frontier Logo
3:29 pm - 6:50 am
CVG
-
STL
16h 21m
2 stops
Frontier Logo
8:13 pm - 6:36 pm
STL
-
CVG
21h 23m
1 stop
$249Frontier
Sun, Apr 19 - Wed, Apr 22
Frontier Logo
1:20 pm - 11:19 pm
CVG
-
STL
10h 59m
1 stop
Frontier Logo
8:06 pm - 5:50 am
STL
-
CVG
8h 44m
1 stop
$250Frontier
Fri, Mar 13 - Sun, Mar 15
Frontier Logo
3:29 pm - 6:50 am
CVG
-
STL
16h 21m
2 stops
Frontier Logo
8:13 pm - 6:36 pm
STL
-
CVG
21h 23m
1 stop
$254Frontier
Sun, Apr 19 - Wed, Apr 22
Frontier Logo
5:30 am - 7:02 am
CVG
-
STL
26h 32m
1 stop
Frontier Logo
9:05 pm - 12:32 am
STL
-
CVG
26h 27m
1 stop
$258Frontier
Sun, Mar 8 - Thu, Mar 12
American Airlines Logo
7:46 pm - 11:46 pm
CVG
-
STL
5h 00m
1 stop
American Airlines Logo
12:25 pm - 9:40 pm
STL
-
CVG
8h 15m
1 stop
$261American Airlines
Mon, May 4 - Wed, May 6
Frontier Logo
7:43 pm - 6:50 am
CVG
-
STL
12h 07m
1 stop
Frontier Logo
8:13 pm - 6:36 pm
STL
-
CVG
21h 23m
1 stop
$263Frontier
Sun, Apr 19 - Wed, Apr 22
Southwest Logo
8:20 pm - 10:45 pm
CVG
-
STL
3h 25m
1 stop
Southwest Logo
7:35 am - 12:40 pm
STL
-
CVG
4h 05m
1 stop
$267Southwest
Mon, May 4 - Wed, May 6

Frontier flights from Cincinnati to St. Louis

Our best Frontier deals on Cincinnati to St. Louis flight tickets
Frontier
Feb 27
CVG1:07 pmCincinnati Cinci./N. Kentucky
18h 44m
1 stop
STL6:51 amLambert-St Louis
Mar 3
STL3:49 pmLambert-St Louis
28h 36m
1 stop
CVG9:25 pmCincinnati Cinci./N. Kentucky
$174
Frontier
Feb 17
CVG3:20 pmCincinnati Cinci./N. Kentucky
16h 31m
2 stops
STL6:51 amLambert-St Louis
Feb 18
STL8:17 pmLambert-St Louis
20h 15m
1 stop
CVG5:32 pmCincinnati Cinci./N. Kentucky
$210
Frontier
Feb 24
CVG3:20 pmCincinnati Cinci./N. Kentucky
16h 31m
2 stops
STL6:51 amLambert-St Louis
Feb 28
STL8:17 pmLambert-St Louis
20h 15m
1 stop
CVG5:32 pmCincinnati Cinci./N. Kentucky
$238

Southwest flights from Cincinnati to St. Louis

Our best Southwest deals on Cincinnati to St. Louis flight tickets
Southwest
May 4
CVG8:20 pmCincinnati Cinci./N. Kentucky
3h 25m
1 stop
STL10:45 pmLambert-St Louis
May 6
STL7:35 amLambert-St Louis
4h 05m
1 stop
CVG12:40 pmCincinnati Cinci./N. Kentucky
$267
Southwest
May 4
CVG6:50 pmCincinnati Cinci./N. Kentucky
5h 25m
1 stop
STL11:15 pmLambert-St Louis
May 6
STL2:30 pmLambert-St Louis
7h 25m
2 stops
CVG10:55 pmCincinnati Cinci./N. Kentucky
$272
Southwest
May 4
CVG6:35 amCincinnati Cinci./N. Kentucky
9h 20m
2 stops
STL2:55 pmLambert-St Louis
May 6
STL2:30 pmLambert-St Louis
7h 25m
2 stops
CVG10:55 pmCincinnati Cinci./N. Kentucky
$283

momondo 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, momondo users made 832,500 searches. Data last updated February 11, 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

Price

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Fri 2/27

1:07 pm-6:51 am

1 stop18h 44m

Lambert-St Louis

Tue 3/3

3:49 pm-9:25 pm

1 stop28h 36m

$174

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Tue 2/24

3:20 pm-6:51 am

2 stops16h 31m

Lambert-St Louis

Sat 2/28

8:17 pm-5:32 pm

1 stop20h 15m

$238

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Mon 2/23

7:00 am-1:09 pm

1 stop7h 09m

Lambert-St Louis

Wed 2/25

8:17 pm-5:32 pm

1 stop20h 15m

$247

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Sun 4/19

3:29 pm-6:50 am

2 stops16h 21m

Lambert-St Louis

Wed 4/22

8:13 pm-6:36 pm

1 stop21h 23m

$249

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Fri 3/13

1:20 pm-11:19 pm

1 stop10h 59m

Lambert-St Louis

Sun 3/15

8:06 pm-5:50 am

1 stop8h 44m

$250

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Sun 4/19

3:29 pm-6:50 am

2 stops16h 21m

Lambert-St Louis

Wed 4/22

8:13 pm-6:36 pm

1 stop21h 23m

$254

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Sun 3/8

5:30 am-7:02 am

1 stop26h 32m

Lambert-St Louis

Thu 3/12

9:05 pm-12:32 am

1 stop26h 27m

$258

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Mon 5/4

7:46 pm-11:46 pm

1 stop5h 00m

Lambert-St Louis

Wed 5/6

12:25 pm-9:40 pm

1 stop8h 15m

$261

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Sun 4/19

7:43 pm-6:50 am

1 stop12h 07m

Lambert-St Louis

Wed 4/22

8:13 pm-6:36 pm

1 stop21h 23m

$263

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Mon 5/4

8:20 pm-10:45 pm

1 stop3h 25m

Lambert-St Louis

Wed 5/6

7:35 am-12:40 pm

1 stop4h 05m

$267

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Cincinnati to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to St. Louis?

In general, August is the cheapest month to fly from Cincinnati to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $236. The month of January is another great option to travel to St. Louis, with average flight prices from Cincinnati averaging around $297.

How have Cincinnati to St. Louis flight prices changed over time?

When to book flights from Cincinnati to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Cincinnati to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Cincinnati to St. Louis (CVG to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Cincinnati to St. Louis

Fastest flight time

3h 58m

Direct flights

None
The fastest flight from Cincinnati to St. Louis takes 3h 58m
There are no direct flights from Cincinnati to St. Louis. There are no popular flight routes from Cincinnati to St. Louis.
Search flight deals

  • How far is Cincinnati Cinci./N. Kentucky to Lambert-St Louis by plane?

    A flight from Cincinnati Cinci./N. Kentucky to Lambert-St Louis will travel around 307.3 mi. Flights usually cover this in 3h 58m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Cincinnati Cinci./N. Kentucky Airport to Lambert-St Louis Airport?

    Prices for flights from Cincinnati Cinci./N. Kentucky Airport to Lambert-St Louis Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Cincinnati Cinci./N. Kentucky Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Cincinnati Cinci./N. Kentucky Airport to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Cincinnati Cinci./N. Kentucky Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Cincinnati to St. Louis?

Best airlines flying from Cincinnati to St. Louis

Compare and see reviews for airlines that fly from Cincinnati to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $218Free CancellationRating
7.2
11,266 reviews
Search American Airlines flights
DeltaPriceFrom $236Free CancellationRating
7.9
8,175 reviews
Search Delta flights
SouthwestPriceFrom $254Free CancellationRating
8.0
4,280 reviews
Search Southwest flights
United AirlinesPriceFrom $276Free CancellationRating
7.4
9,274 reviews
Search United Airlines flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
Florissant
O'Fallon
Collinsville
St. Peters
Fenton
Wentzville
Alton
Farmington
Clayton
Edwardsville
Eureka
Festus
Litchfield
Glencoe
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Cincinnati to St. Louis?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Cincinnati to St. Louis for you.

Can I find flights from Cincinnati to St. Louis with flexible booking policies on momondo?

Yes. All flights to St. Louis from Cincinnati on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Cincinnati to St. Louis?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Cincinnati to St. Louis.

I’m not ready to book a flight from Cincinnati to St. Louis right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Cincinnati to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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