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Cheap flights from Cincinnati to St. Louis from $62

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 2/3. 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
9:00 am - 8:24 am
CVG
-
STL
24h 24m1 stop
Frontier Logo
12:12 pm - 10:20 pm
STL
-
CVG
9h 08m1 stop
$129Frontier
Sat, Jan 31 - Sat, Feb 7
Frontier Logo
4:23 pm - 11:33 pm
CVG
-
STL
8h 10m1 stop
Frontier Logo
5:42 pm - 11:26 pm
STL
-
CVG
28h 44m1 stop
$143Frontier
Tue, Jan 27 - Wed, Jan 28
Frontier Logo
5:39 pm - 11:33 pm
CVG
-
STL
6h 54m1 stop
Frontier Logo
10:16 am - 11:26 pm
STL
-
CVG
12h 10m1 stop
$160Frontier
Thu, Jan 22 - Mon, Jan 26
Frontier Logo
2:27 pm - 10:34 pm
CVG
-
STL
9h 07m1 stop
Frontier Logo
12:12 pm - 10:20 pm
STL
-
CVG
9h 08m1 stop
$181Frontier
Sat, Jan 17 - Sat, Jan 24
Multiple Airlines Logo
4:23 pm - 11:33 pm
CVG
-
STL
8h 10m1 stop
Multiple Airlines Logo
5:42 pm - 1:03 pm
STL
-
CVG
18h 21m2 stops
$191Multiple Airlines
Tue, Jan 27 - Wed, Jan 28
Frontier Logo
4:23 pm - 11:33 pm
CVG
-
STL
8h 10m1 stop
Frontier Logo
5:42 pm - 8:53 pm
STL
-
CVG
26h 11m2 stops
$193Frontier
Tue, Jan 27 - Sun, Feb 1
Frontier Logo
3:20 pm - 11:59 pm
CVG
-
STL
9h 39m1 stop
Frontier Logo
1:59 pm - 11:42 pm
STL
-
CVG
8h 43m1 stop
$195Frontier
Sat, Feb 14 - Fri, Feb 20
Southwest Logo
1:35 pm - 9:00 pm
CVG
-
STL
8h 25m2 stops
Southwest Logo
2:15 pm - 10:25 pm
STL
-
CVG
7h 10m2 stops
$206Southwest
Tue, Jan 27 - Wed, Jan 28
Frontier Logo
10:30 am - 11:33 pm
CVG
-
STL
14h 03m1 stop
Frontier Logo
5:42 pm - 1:00 pm
STL
-
CVG
18h 18m1 stop
$222Frontier
Mon, Jan 26 - Wed, Jan 28
Frontier Logo
4:23 pm - 11:33 pm
CVG
-
STL
8h 10m1 stop
Frontier Logo
5:42 pm - 8:53 pm
STL
-
CVG
26h 11m2 stops
$227Frontier
Tue, Jan 27 - Thu, Jan 29

Southwest flights from Cincinnati to St. Louis

Our best Southwest deals on Cincinnati to St. Louis flight tickets
Southwest
Jan 27
CVG1:35 pmCincinnati Cinci./N. Kentucky
8h 25m
2 stops
STL9:00 pmLambert-St Louis
Jan 28
STL2:15 pmLambert-St Louis
7h 10m
2 stops
CVG10:25 pmCincinnati Cinci./N. Kentucky
$206
Find similar
Southwest
Feb 25
CVG1:35 pmCincinnati Cinci./N. Kentucky
8h 00m
2 stops
STL8:35 pmLambert-St Louis
Feb 26
STL3:10 pmLambert-St Louis
7h 35m
2 stops
CVG11:45 pmCincinnati Cinci./N. Kentucky
$258
Find similar
Southwest
Jan 26
CVG7:00 amCincinnati Cinci./N. Kentucky
5h 15m
1 stop
STL11:15 amLambert-St Louis
Jan 28
STL11:35 amLambert-St Louis
9h 50m
2 stops
CVG10:25 pmCincinnati Cinci./N. Kentucky
$271
Find similar

United Airlines flights from Cincinnati to St. Louis

Our best United Airlines deals on Cincinnati to St. Louis flight tickets
United Airlines
Jan 29
CVG11:15 amCincinnati Cinci./N. Kentucky
4h 15m
1 stop
STL2:30 pmLambert-St Louis
Jan 31
STL8:30 amLambert-St Louis
4h 53m
1 stop
CVG2:23 pmCincinnati Cinci./N. Kentucky
$246
Find similar
United Airlines
Feb 13
CVG5:55 pmCincinnati Cinci./N. Kentucky
6h 04m
1 stop
STL10:59 pmLambert-St Louis
Feb 16
STL7:41 amLambert-St Louis
6h 47m
1 stop
CVG3:28 pmCincinnati Cinci./N. Kentucky
$327
Find similar
United Airlines
Jan 16
CVG5:55 pmCincinnati Cinci./N. Kentucky
6h 03m
1 stop
STL10:58 pmLambert-St Louis
Jan 19
STL6:30 amLambert-St Louis
5h 51m
1 stop
CVG1:21 pmCincinnati Cinci./N. Kentucky
$546
Find similar

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 January 6, 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

Sat 1/31

9:00 am-8:24 am

1 stop24h 24m

Lambert-St Louis

Sat 2/7

12:12 pm-10:20 pm

1 stop9h 08m

$129

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Tue 1/27

4:23 pm-11:33 pm

1 stop8h 10m

Lambert-St Louis

Wed 1/28

5:42 pm-11:26 pm

1 stop28h 44m

$143

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Thu 1/22

5:39 pm-11:33 pm

1 stop6h 54m

Lambert-St Louis

Mon 1/26

10:16 am-11:26 pm

1 stop12h 10m

$160

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Sat 1/17

2:27 pm-10:34 pm

1 stop9h 07m

Lambert-St Louis

Sat 1/24

12:12 pm-10:20 pm

1 stop9h 08m

$181

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Tue 1/27

4:23 pm-11:33 pm

1 stop8h 10m

Lambert-St Louis

Wed 1/28

5:42 pm-1:03 pm

2 stops18h 21m

$191

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Tue 1/27

4:23 pm-11:33 pm

1 stop8h 10m

Lambert-St Louis

Sun 2/1

5:42 pm-8:53 pm

2 stops26h 11m

$193

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Sat 2/14

3:20 pm-11:59 pm

1 stop9h 39m

Lambert-St Louis

Fri 2/20

1:59 pm-11:42 pm

1 stop8h 43m

$195

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Tue 1/27

1:35 pm-9:00 pm

2 stops8h 25m

Lambert-St Louis

Wed 1/28

2:15 pm-10:25 pm

2 stops7h 10m

$206

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Mon 1/26

10:30 am-11:33 pm

1 stop14h 03m

Lambert-St Louis

Wed 1/28

5:42 pm-1:00 pm

1 stop18h 18m

$222

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Tue 1/27

4:23 pm-11:33 pm

1 stop8h 10m

Lambert-St Louis

Thu 1/29

5:42 pm-8:53 pm

2 stops26h 11m

$227

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 $296.

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

4h 03m

Direct flights

None
The fastest flight from Cincinnati to St. Louis takes 4h 03m
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 4h 03m, 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
FrontierPriceFrom $85Free CancellationRating
5.7
3,063 reviews
Search Frontier flights
American AirlinesPriceFrom $218Free CancellationRating
7.2
11,084 reviews
Search American Airlines flights
DeltaPriceFrom $236Free CancellationRating
7.9
8,018 reviews
Search Delta flights
SouthwestPriceFrom $254Free CancellationRating
8.0
4,248 reviews
Search Southwest flights
United AirlinesPriceFrom $262Free CancellationRating
7.4
9,132 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
O'Fallon
Maryland Heights
Florissant
Fenton
Collinsville
St. Peters
Wentzville
Alton
Farmington
Clayton
Eureka
Festus
Edwardsville
Glencoe
Litchfield
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.

An easier way to manage your St. Louis trip

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