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Cheap flights from St. Louis to Cincinnati from $73

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Cincinnati departing on 8/6. 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 St. Louis to Cincinnati

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
4:57 pm - 11:48 am
STL
-
CVG
17h 51m
1 stop
Frontier Logo
12:18 pm - 5:37 pm
CVG
-
STL
6h 19m
1 stop
$138Frontier
Fri, Aug 14 - Sun, Aug 16
Frontier Logo
6:17 pm - 11:21 am
STL
-
CVG
16h 04m
1 stop
Frontier Logo
12:26 pm - 5:22 pm
CVG
-
STL
5h 56m
1 stop
$139Frontier
Fri, Aug 28 - Sun, Aug 30
Frontier Logo
6:17 pm - 11:21 am
STL
-
CVG
16h 04m
1 stop
Frontier Logo
12:26 pm - 5:22 pm
CVG
-
STL
5h 56m
1 stop
$140Frontier
Mon, Aug 24 - Fri, Aug 28
Frontier Logo
4:57 pm - 11:48 am
STL
-
CVG
17h 51m
1 stop
Frontier Logo
12:18 pm - 5:37 pm
CVG
-
STL
6h 19m
1 stop
$141Frontier
Fri, Aug 7 - Thu, Aug 13
Frontier Logo
6:34 pm - 11:48 am
STL
-
CVG
16h 14m
1 stop
Frontier Logo
12:18 pm - 8:57 am
CVG
-
STL
21h 39m
1 stop
$142Frontier
Thu, Aug 6 - Tue, Aug 11
Frontier Logo
10:35 am - 11:43 am
STL
-
CVG
24h 08m
1 stop
Frontier Logo
12:48 pm - 9:40 am
CVG
-
STL
21h 52m
1 stop
$156Frontier
Sun, Sep 27 - Wed, Sep 30
Frontier Logo
4:57 pm - 11:13 am
STL
-
CVG
17h 16m
1 stop
Frontier Logo
12:18 pm - 8:57 am
CVG
-
STL
21h 39m
1 stop
$163Frontier
Mon, Jul 27 - Thu, Jul 30
Frontier Logo
6:17 pm - 10:05 am
STL
-
CVG
14h 48m
2 stops
Frontier Logo
12:26 pm - 5:22 pm
CVG
-
STL
5h 56m
1 stop
$178Frontier
Mon, Aug 24 - Fri, Aug 28
Frontier Logo
4:57 pm - 11:48 am
STL
-
CVG
17h 51m
1 stop
Frontier Logo
9:23 pm - 5:37 pm
CVG
-
STL
21h 14m
2 stops
$182Frontier
Fri, Aug 7 - Mon, Aug 10
Frontier Logo
4:57 pm - 11:48 am
STL
-
CVG
17h 51m
1 stop
Frontier Logo
9:23 pm - 8:57 am
CVG
-
STL
36h 34m
2 stops
$189Frontier
Fri, Aug 7 - Thu, Aug 13

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Frontier flights from St. Louis to Cincinnati

Our best Frontier deals on St. Louis to Cincinnati flight tickets
Frontier
Aug 14
STL4:57 pmLambert-St Louis
17h 51m
1 stop
CVG11:48 amCincinnati Cinci./N. Kentucky
Aug 16
CVG12:18 pmCincinnati Cinci./N. Kentucky
6h 19m
1 stop
STL5:37 pmLambert-St Louis
$138
Frontier
Aug 28
STL6:17 pmLambert-St Louis
16h 04m
1 stop
CVG11:21 amCincinnati Cinci./N. Kentucky
Aug 30
CVG12:26 pmCincinnati Cinci./N. Kentucky
5h 56m
1 stop
STL5:22 pmLambert-St Louis
$139
Frontier
Aug 24
STL6:17 pmLambert-St Louis
16h 04m
1 stop
CVG11:21 amCincinnati Cinci./N. Kentucky
Aug 28
CVG12:26 pmCincinnati Cinci./N. Kentucky
5h 56m
1 stop
STL5:22 pmLambert-St Louis
$140

American Airlines flights from St. Louis to Cincinnati

Our best American Airlines deals on St. Louis to Cincinnati flight tickets
American Airlines
Aug 7
STL4:54 pmLambert-St Louis
5h 22m
1 stop
CVG11:16 pmCincinnati Cinci./N. Kentucky
Aug 10
CVG8:27 pmCincinnati Cinci./N. Kentucky
4h 47m
1 stop
STL12:14 amLambert-St Louis
$227
American Airlines
Sep 11
STL7:21 amLambert-St Louis
6h 00m
1 stop
CVG2:21 pmCincinnati Cinci./N. Kentucky
Sep 13
CVG5:34 amCincinnati Cinci./N. Kentucky
5h 46m
1 stop
STL10:20 amLambert-St Louis
$347
American Airlines
Jul 23
STL6:55 amLambert-St Louis
6h 30m
1 stop
CVG2:25 pmCincinnati Cinci./N. Kentucky
Jul 27
CVG6:00 amCincinnati Cinci./N. Kentucky
3h 31m
1 stop
STL8:31 amLambert-St Louis
$423

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Cincinnati 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 9, 2026.
Use the filters below to find and compare flights from St. Louis to Cincinnati that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Fri 8/14

4:57 pm-11:48 am

1 stop17h 51m

Cincinnati Cinci./N. Kentucky

Sun 8/16

12:18 pm-5:37 pm

1 stop6h 19m

$138

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Fri 8/28

6:17 pm-11:21 am

1 stop16h 04m

Cincinnati Cinci./N. Kentucky

Sun 8/30

12:26 pm-5:22 pm

1 stop5h 56m

$139

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Mon 8/24

6:17 pm-11:21 am

1 stop16h 04m

Cincinnati Cinci./N. Kentucky

Fri 8/28

12:26 pm-5:22 pm

1 stop5h 56m

$140

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Fri 8/7

4:57 pm-11:48 am

1 stop17h 51m

Cincinnati Cinci./N. Kentucky

Thu 8/13

12:18 pm-5:37 pm

1 stop6h 19m

$141

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Thu 8/6

6:34 pm-11:48 am

1 stop16h 14m

Cincinnati Cinci./N. Kentucky

Tue 8/11

12:18 pm-8:57 am

1 stop21h 39m

$142

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Sun 9/27

10:35 am-11:43 am

1 stop24h 08m

Cincinnati Cinci./N. Kentucky

Wed 9/30

12:48 pm-9:40 am

1 stop21h 52m

$156

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Mon 7/27

4:57 pm-11:13 am

1 stop17h 16m

Cincinnati Cinci./N. Kentucky

Thu 7/30

12:18 pm-8:57 am

1 stop21h 39m

$163
Quickest round-trip

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Mon 8/24

6:17 pm-10:05 am

2 stops14h 48m

Cincinnati Cinci./N. Kentucky

Fri 8/28

12:26 pm-5:22 pm

1 stop5h 56m

$178

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Fri 8/7

4:57 pm-11:48 am

1 stop17h 51m

Cincinnati Cinci./N. Kentucky

Mon 8/10

9:23 pm-5:37 pm

2 stops21h 14m

$182

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Fri 8/7

4:57 pm-11:48 am

1 stop17h 51m

Cincinnati Cinci./N. Kentucky

Thu 8/13

9:23 pm-8:57 am

2 stops36h 34m

$189

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 Cincinnati from

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

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 Cincinnati?

The month of October is, on average, the cheapest month to fly to Cincinnati from St. Louis, with most prices found around $0. If you aren’t able to travel to Cincinnati during the month of October, then flying in June is also cheap. Prices for this month can be found on momondo for an average of $0.

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

As of July 2026, prices for St. Louis to Cincinnati flights are approximately 89% more expensive when compared to flights at the same time last year.

When to book flights from St. Louis to Cincinnati

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

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

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

Fastest flight time

3h 36m

Direct flights

None
The fastest flight from St. Louis to Cincinnati takes 3h 36m
There are no direct flights from St. Louis to Cincinnati. There are no popular flight routes from St. Louis to Cincinnati.
Search flight deals

Frequently asked questions about flying from St. Louis to Cincinnati

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

    There are 307.3 mi between Lambert-St Louis and Cincinnati Cinci./N. Kentucky. Flights usually cover this in 3h 36m, depending on flying conditions and air traffic around both airports.

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

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

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

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

  • What documentation or ID do you need to fly to Cincinnati Cinci./N. Kentucky Airport?

    The travel and health documents required for your trip to Cincinnati Cinci./N. Kentucky Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Cincinnati Cinci./N. Kentucky Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Best airlines flying from St. Louis to Cincinnati

Compare and see reviews for airlines that fly from St. Louis to Cincinnati with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $156Free CancellationRating
5.6
2,835 reviews
Search Frontier flights
American AirlinesPriceFrom $176Free CancellationRating
7.1
11,792 reviews
Search American Airlines flights
DeltaPriceFrom $196Free CancellationRating
7.8
8,453 reviews
Search Delta flights

Traveling to a place near Cincinnati?

Book flights to Cincinnati if you plan to visit one of these locations
Florence
Mason
Newport
Sharonville
Covington
Middletown
Williamstown
Lawrenceburg
West Chester
Blue Ash
Fairfield
Oxford
Hebron
Monroe
Dry Ridge
Bethel
Trenton
Corinth
Georgetown
Edgewood

Why use momondo?

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

It is quick and easy to find St. Louis to Cincinnati flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Cincinnati that suits you.

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

Flights from St. Louis to Cincinnati with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once all potential St. Louis to Cincinnati flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes momondo offers price alerts on flights to Cincinnati from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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