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Cheap flights from Cincinnati to St. Louis from $64

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 2/24. 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
3:20 pm - 10:27 pm
CVG
-
STL
8h 07m
1 stop
Frontier Logo
4:51 pm - 12:41 am
STL
-
CVG
6h 50m
1 stop
$175Frontier
mar., mar. 3 - mar., mar. 10
Frontier Logo
8:49 pm - 6:51 am
CVG
-
STL
35h 02m
2 stops
Frontier Logo
1:54 pm - 11:42 pm
STL
-
CVG
8h 48m
1 stop
$194Frontier
lun., feb. 16 - lun., feb. 23
Frontier Logo
5:39 pm - 11:33 pm
CVG
-
STL
6h 54m
1 stop
Frontier Logo
11:18 am - 11:26 pm
STL
-
CVG
11h 08m
1 stop
$195Frontier
lun., feb. 2 - vie., feb. 6
Frontier Logo
9:26 pm - 10:27 pm
CVG
-
STL
26h 01m
1 stop
Frontier Logo
3:49 pm - 2:10 pm
STL
-
CVG
21h 21m
1 stop
$210Frontier
lun., feb. 16 - lun., feb. 23
Frontier Logo
5:39 pm - 11:33 pm
CVG
-
STL
6h 54m
1 stop
Frontier Logo
1:40 pm - 8:53 pm
STL
-
CVG
6h 13m
1 stop
$215Frontier
vie., ene. 30 - lun., feb. 2
Multiple Airlines Logo
1:07 pm - 6:51 am
CVG
-
STL
18h 44m
1 stop
Multiple Airlines Logo
3:49 pm - 12:59 am
STL
-
CVG
32h 10m
2 stops
$231Multiple Airlines
dom., feb. 15 - dom., feb. 22
Frontier Logo
1:07 pm - 6:51 am
CVG
-
STL
18h 44m
1 stop
Frontier Logo
3:49 pm - 12:59 am
STL
-
CVG
8h 10m
1 stop
$236Frontier
vie., feb. 20 - dom., feb. 22
Frontier Logo
3:20 pm - 6:51 am
CVG
-
STL
16h 31m
2 stops
Frontier Logo
4:51 pm - 12:41 am
STL
-
CVG
6h 50m
1 stop
$246Frontier
mar., mar. 3 - mar., mar. 10
Frontier Logo
3:20 pm - 6:51 am
CVG
-
STL
16h 31m
2 stops
Frontier Logo
4:51 pm - 12:41 am
STL
-
CVG
6h 50m
1 stop
$248Frontier
mar., mar. 3 - mar., mar. 10
Frontier Logo
1:07 pm - 6:51 am
CVG
-
STL
18h 44m
1 stop
Frontier Logo
3:49 pm - 12:59 am
STL
-
CVG
8h 10m
1 stop
$254Frontier
dom., feb. 15 - dom., feb. 22

Delta flights from Cincinnati to St. Louis

Our best Delta deals on Cincinnati to St. Louis flight tickets
Delta
Feb 17
CVG6:00 amCincinnati Cinci./N. Kentucky
4h 06m
1 stop
STL9:06 amLambert-St Louis
Feb 18
STL10:14 amLambert-St Louis
6h 07m
1 stop
CVG5:21 pmCincinnati Cinci./N. Kentucky
$255
Delta
Feb 5
CVG6:10 amCincinnati Cinci./N. Kentucky
4h 24m
1 stop
STL9:34 amLambert-St Louis
Feb 9
STL5:56 pmLambert-St Louis
3h 41m
1 stop
CVG10:37 pmCincinnati Cinci./N. Kentucky
$364
Delta
Jan 21
CVG6:04 pmCincinnati Cinci./N. Kentucky
6h 33m
1 stop
STL11:37 pmLambert-St Louis
Jan 22
STL12:00 pmLambert-St Louis
3h 59m
1 stop
CVG4:59 pmCincinnati Cinci./N. Kentucky
$2,033

United Airlines flights from Cincinnati to St. Louis

Our best United Airlines deals on Cincinnati to St. Louis flight tickets
United Airlines
Mar 24
CVG6:02 pmCincinnati Cinci./N. Kentucky
4h 05m
1 stop
STL9:07 pmLambert-St Louis
Mar 27
STL7:41 amLambert-St Louis
6h 46m
1 stop
CVG3:27 pmCincinnati Cinci./N. Kentucky
$308
United Airlines
Feb 17
CVG4:15 pmCincinnati Cinci./N. Kentucky
5h 50m
1 stop
STL9:05 pmLambert-St Louis
Feb 18
STL6:25 amLambert-St Louis
11h 33m
2 stops
CVG6:58 pmCincinnati Cinci./N. Kentucky
$571
United Airlines
Jan 22
CVG7:00 amCincinnati Cinci./N. Kentucky
6h 29m
1 stop
STL12:29 pmLambert-St Louis
Jan 26
STL7:00 amLambert-St Louis
7h 20m
1 stop
CVG3:20 pmCincinnati Cinci./N. Kentucky
$637

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 enero 20, 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

mar. 3/3

3:20 pm-10:27 pm

1 stop8h 07m

Lambert-St Louis

mar. 3/10

4:51 pm-12:41 am

1 stop6h 50m

$175

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

lun. 2/16

8:49 pm-6:51 am

2 stops35h 02m

Lambert-St Louis

lun. 2/23

1:54 pm-11:42 pm

1 stop8h 48m

$194

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

lun. 2/2

5:39 pm-11:33 pm

1 stop6h 54m

Lambert-St Louis

vie. 2/6

11:18 am-11:26 pm

1 stop11h 08m

$195

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

lun. 2/16

9:26 pm-10:27 pm

1 stop26h 01m

Lambert-St Louis

lun. 2/23

3:49 pm-2:10 pm

1 stop21h 21m

$210

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

vie. 1/30

5:39 pm-11:33 pm

1 stop6h 54m

Lambert-St Louis

lun. 2/2

1:40 pm-8:53 pm

1 stop6h 13m

$215

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

dom. 2/15

1:07 pm-6:51 am

1 stop18h 44m

Lambert-St Louis

dom. 2/22

3:49 pm-12:59 am

2 stops32h 10m

$231

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

vie. 2/20

1:07 pm-6:51 am

1 stop18h 44m

Lambert-St Louis

dom. 2/22

3:49 pm-12:59 am

1 stop8h 10m

$236

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

mar. 3/3

3:20 pm-6:51 am

2 stops16h 31m

Lambert-St Louis

mar. 3/10

4:51 pm-12:41 am

1 stop6h 50m

$246

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

mar. 3/3

3:20 pm-6:51 am

2 stops16h 31m

Lambert-St Louis

mar. 3/10

4:51 pm-12:41 am

1 stop6h 50m

$248

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

dom. 2/15

1:07 pm-6:51 am

1 stop18h 44m

Lambert-St Louis

dom. 2/22

3:49 pm-12:59 am

1 stop8h 10m

$254

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 $298.

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 06m

Direct flights

None
The fastest flight from Cincinnati to St. Louis takes 4h 06m
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 06m, 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
3,056 reviews
Search Frontier flights
American AirlinesPriceFrom $218Free CancellationRating
7.2
11,164 reviews
Search American Airlines flights
DeltaPriceFrom $236Free CancellationRating
7.9
8,076 reviews
Search Delta flights
SouthwestPriceFrom $254Free CancellationRating
8.0
4,267 reviews
Search Southwest flights
United AirlinesPriceFrom $276Free CancellationRating
7.4
9,180 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
Fenton
Collinsville
St. Peters
Wentzville
Alton
Farmington
Clayton
Eureka
Edwardsville
Festus
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.

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