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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 8/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Cincinnati to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
12:53 pm - 8:57 am
CVG
-
STL
21h 04m
1 stop
Frontier Logo
6:17 pm - 11:21 am
STL
-
CVG
16h 04m
1 stop
$117Frontier
Fri, Aug 14 - Fri, Aug 21
Frontier Logo
12:18 pm - 5:37 pm
CVG
-
STL
6h 19m
1 stop
Frontier Logo
4:57 pm - 11:13 am
STL
-
CVG
17h 16m
1 stop
$120Frontier
Tue, Aug 4 - Sat, Aug 8
Frontier Logo
12:18 pm - 5:37 pm
CVG
-
STL
6h 19m
1 stop
Frontier Logo
4:57 pm - 11:13 am
STL
-
CVG
17h 16m
1 stop
$121Frontier
Tue, Aug 4 - Sat, Aug 8
Frontier Logo
12:18 pm - 5:37 pm
CVG
-
STL
6h 19m
1 stop
Frontier Logo
4:57 pm - 11:13 am
STL
-
CVG
17h 16m
1 stop
$122Frontier
Tue, Aug 4 - Sat, Aug 8
Frontier Logo
12:26 pm - 5:22 pm
CVG
-
STL
5h 56m
1 stop
Frontier Logo
6:17 pm - 11:21 am
STL
-
CVG
16h 04m
1 stop
$130Frontier
Fri, Aug 28 - Fri, Sep 4
Frontier Logo
12:18 pm - 5:37 pm
CVG
-
STL
6h 19m
1 stop
Frontier Logo
4:57 pm - 11:13 am
STL
-
CVG
17h 16m
1 stop
$146Frontier
Tue, Aug 4 - Mon, Aug 10
Frontier Logo
12:18 pm - 5:37 pm
CVG
-
STL
6h 19m
1 stop
Frontier Logo
4:57 pm - 11:13 am
STL
-
CVG
17h 16m
1 stop
$148Frontier
Tue, Jul 28 - Sat, Aug 1
Frontier Logo
12:26 pm - 5:22 pm
CVG
-
STL
5h 56m
1 stop
Frontier Logo
6:17 pm - 11:21 am
STL
-
CVG
16h 04m
1 stop
$150Frontier
Fri, Sep 4 - Sun, Sep 6
Frontier Logo
12:18 pm - 5:37 pm
CVG
-
STL
6h 19m
1 stop
Frontier Logo
5:27 pm - 11:21 am
STL
-
CVG
40h 54m
2 stops
$177Frontier
Tue, Aug 11 - Tue, Aug 18
Frontier Logo
2:03 pm - 8:57 am
CVG
-
STL
19h 54m
2 stops
Frontier Logo
6:17 pm - 11:21 am
STL
-
CVG
16h 04m
1 stop
$187Frontier
Fri, Aug 14 - Fri, Aug 21

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Frontier flights from Cincinnati to St. Louis

Our best Frontier deals on Cincinnati to St. Louis flight tickets
Frontier
Aug 14
CVG12:53 pmCincinnati Cinci./N. Kentucky
21h 04m
1 stop
STL8:57 amLambert-St Louis
Aug 21
STL6:17 pmLambert-St Louis
16h 04m
1 stop
CVG11:21 amCincinnati Cinci./N. Kentucky
$117
Frontier
Aug 4
CVG12:18 pmCincinnati Cinci./N. Kentucky
6h 19m
1 stop
STL5:37 pmLambert-St Louis
Aug 8
STL4:57 pmLambert-St Louis
17h 16m
1 stop
CVG11:13 amCincinnati Cinci./N. Kentucky
$120
Frontier
Aug 4
CVG12:18 pmCincinnati Cinci./N. Kentucky
6h 19m
1 stop
STL5:37 pmLambert-St Louis
Aug 8
STL4:57 pmLambert-St Louis
17h 16m
1 stop
CVG11:13 amCincinnati Cinci./N. Kentucky
$121

Southwest flights from Cincinnati to St. Louis

Our best Southwest deals on Cincinnati to St. Louis flight tickets
Southwest
Aug 12
CVG3:30 pmCincinnati Cinci./N. Kentucky
6h 40m
1 stop
STL9:10 pmLambert-St Louis
Aug 19
STL12:50 pmLambert-St Louis
7h 00m
2 stops
CVG8:50 pmCincinnati Cinci./N. Kentucky
$278
Southwest
Jul 27
CVG3:50 pmCincinnati Cinci./N. Kentucky
8h 05m
2 stops
STL10:55 pmLambert-St Louis
Jul 30
STL3:35 pmLambert-St Louis
7h 55m
2 stops
CVG12:30 amCincinnati Cinci./N. Kentucky
$469
Southwest
Jul 31
CVG3:50 pmCincinnati Cinci./N. Kentucky
8h 00m
2 stops
STL10:50 pmLambert-St Louis
Aug 3
STL2:15 pmLambert-St Louis
7h 50m
2 stops
CVG11:05 pmCincinnati Cinci./N. Kentucky
$473

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 July 17, 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

Cheapest round-trip

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Fri 8/14

12:53 pm-8:57 am

1 stop21h 04m

Lambert-St Louis

Fri 8/21

6:17 pm-11:21 am

1 stop16h 04m

$117

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Tue 8/4

12:18 pm-5:37 pm

1 stop6h 19m

Lambert-St Louis

Sat 8/8

4:57 pm-11:13 am

1 stop17h 16m

$120

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Tue 8/4

12:18 pm-5:37 pm

1 stop6h 19m

Lambert-St Louis

Sat 8/8

4:57 pm-11:13 am

1 stop17h 16m

$121

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Tue 8/4

12:18 pm-5:37 pm

1 stop6h 19m

Lambert-St Louis

Sat 8/8

4:57 pm-11:13 am

1 stop17h 16m

$122
Quickest round-trip

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Fri 8/28

12:26 pm-5:22 pm

1 stop5h 56m

Lambert-St Louis

Fri 9/4

6:17 pm-11:21 am

1 stop16h 04m

$130

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Tue 8/4

12:18 pm-5:37 pm

1 stop6h 19m

Lambert-St Louis

Mon 8/10

4:57 pm-11:13 am

1 stop17h 16m

$146

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Tue 7/28

12:18 pm-5:37 pm

1 stop6h 19m

Lambert-St Louis

Sat 8/1

4:57 pm-11:13 am

1 stop17h 16m

$148

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Fri 9/4

12:26 pm-5:22 pm

1 stop5h 56m

Lambert-St Louis

Sun 9/6

6:17 pm-11:21 am

1 stop16h 04m

$150

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Tue 8/11

12:18 pm-5:37 pm

1 stop6h 19m

Lambert-St Louis

Tue 8/18

5:27 pm-11:21 am

2 stops40h 54m

$177

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Fri 8/14

2:03 pm-8:57 am

2 stops19h 54m

Lambert-St Louis

Fri 8/21

6:17 pm-11:21 am

1 stop16h 04m

$187

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 typical price of a round-trip flight between Cincinnati and St. Louis?

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 $262. 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 57m

Direct flights

None
The fastest flight from Cincinnati to St. Louis takes 3h 57m
There are no direct flights from Cincinnati to St. Louis. There are no popular flight routes from Cincinnati to St. Louis.
Search flight deals

Frequently asked questions about flying from Cincinnati to St. Louis

  • 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 57m, 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 $207Free CancellationRating
7.1
11,820 reviews
Search American Airlines flights
DeltaPriceFrom $236Free CancellationRating
7.8
8,474 reviews
Search Delta flights
SouthwestPriceFrom $254Free CancellationRating
8.0
4,241 reviews
Search Southwest flights
United AirlinesPriceFrom $259Free CancellationRating
7.4
9,997 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
Fairview Heights
Hermann
Collinsville
Florissant
St. Peters
Maryland Heights
O'Fallon
Alton
Farmington
Wentzville
Clayton
Fenton
Festus
Eureka
Edwardsville
Litchfield
Grafton
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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