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Cheap flights from St. Louis to Cincinnati from $86

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 7/25. 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
6:34 pm - 11:48 am
STL
-
CVG
16h 14m
1 stop
Frontier Logo
12:18 pm - 5:37 pm
CVG
-
STL
6h 19m
1 stop
$164Frontier
Tue, Jul 7 - Thu, Jul 9
Frontier Logo
4:57 pm - 11:48 am
STL
-
CVG
17h 51m
1 stop
Frontier Logo
12:53 pm - 8:57 am
CVG
-
STL
21h 04m
1 stop
$166Frontier
Fri, Jul 24 - Fri, Jul 31
Frontier Logo
5:06 pm - 11:14 am
STL
-
CVG
17h 08m
1 stop
Frontier Logo
12:18 pm - 8:57 am
CVG
-
STL
21h 39m
1 stop
$167Frontier
Wed, Jul 1 - Sun, Jul 12
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
$179Frontier
Thu, Jul 23 - Tue, Jul 28
Frontier Logo
5:06 pm - 11:47 am
STL
-
CVG
17h 41m
1 stop
Frontier Logo
12:53 pm - 8:57 am
CVG
-
STL
21h 04m
1 stop
$181Frontier
Fri, Jul 3 - Fri, Jul 10
Frontier Logo
4:57 pm - 11:13 am
STL
-
CVG
17h 16m
1 stop
Frontier Logo
12:18 pm - 5:37 pm
CVG
-
STL
6h 19m
1 stop
$187Frontier
Mon, Jul 20 - Thu, Jul 23
Frontier Logo
6:34 pm - 11:48 am
STL
-
CVG
16h 14m
1 stop
Frontier Logo
12:53 pm - 8:57 am
CVG
-
STL
21h 04m
1 stop
$199Frontier
Sun, Jul 12 - Fri, Jul 17
Frontier Logo
4:10 pm - 1:25 pm
STL
-
CVG
20h 15m
1 stop
Frontier Logo
8:40 pm - 7:36 pm
CVG
-
STL
23h 56m
1 stop
$222Frontier
Tue, Sep 1 - Wed, Sep 2
Frontier Logo
6:31 pm - 11:49 am
STL
-
CVG
16h 18m
1 stop
Frontier Logo
12:24 pm - 5:30 pm
CVG
-
STL
6h 06m
1 stop
$232Frontier
Thu, Jun 25 - Tue, Jun 30
Southwest Logo
8:25 am - 4:50 pm
STL
-
CVG
7h 25m
1 stop
Southwest Logo
9:05 am - 4:45 pm
CVG
-
STL
8h 40m
2 stops
$234Southwest
Tue, Sep 1 - Wed, Sep 2

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Frontier flights from St. Louis to Cincinnati

Our best Frontier deals on St. Louis to Cincinnati flight tickets
Frontier
Jul 7
STL6:34 pmLambert-St Louis
16h 14m
1 stop
CVG11:48 amCincinnati Cinci./N. Kentucky
Jul 9
CVG12:18 pmCincinnati Cinci./N. Kentucky
6h 19m
1 stop
STL5:37 pmLambert-St Louis
$164
Frontier
Jul 24
STL4:57 pmLambert-St Louis
17h 51m
1 stop
CVG11:48 amCincinnati Cinci./N. Kentucky
Jul 31
CVG12:53 pmCincinnati Cinci./N. Kentucky
21h 04m
1 stop
STL8:57 amLambert-St Louis
$166
Frontier
Jul 1
STL5:06 pmLambert-St Louis
17h 08m
1 stop
CVG11:14 amCincinnati Cinci./N. Kentucky
Jul 12
CVG12:18 pmCincinnati Cinci./N. Kentucky
21h 39m
1 stop
STL8:57 amLambert-St Louis
$167

Southwest flights from St. Louis to Cincinnati

Our best Southwest deals on St. Louis to Cincinnati flight tickets
Southwest
Sep 1
STL8:25 amLambert-St Louis
7h 25m
1 stop
CVG4:50 pmCincinnati Cinci./N. Kentucky
Sep 2
CVG9:05 amCincinnati Cinci./N. Kentucky
8h 40m
2 stops
STL4:45 pmLambert-St Louis
$234
Southwest
Aug 24
STL3:45 pmLambert-St Louis
4h 50m
1 stop
CVG9:35 pmCincinnati Cinci./N. Kentucky
Aug 25
CVG9:05 amCincinnati Cinci./N. Kentucky
8h 40m
2 stops
STL4:45 pmLambert-St Louis
$256
Southwest
Aug 24
STL8:30 amLambert-St Louis
7h 15m
2 stops
CVG4:45 pmCincinnati Cinci./N. Kentucky
Aug 25
CVG9:05 amCincinnati Cinci./N. Kentucky
8h 20m
2 stops
STL4:25 pmLambert-St Louis
$261

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 June 11, 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

Tue 7/7

6:34 pm-11:48 am

1 stop16h 14m

Cincinnati Cinci./N. Kentucky

Thu 7/9

12:18 pm-5:37 pm

1 stop6h 19m

$164

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Fri 7/24

4:57 pm-11:48 am

1 stop17h 51m

Cincinnati Cinci./N. Kentucky

Fri 7/31

12:53 pm-8:57 am

1 stop21h 04m

$166

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Wed 7/1

5:06 pm-11:14 am

1 stop17h 08m

Cincinnati Cinci./N. Kentucky

Sun 7/12

12:18 pm-8:57 am

1 stop21h 39m

$167

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Thu 7/23

6:34 pm-11:48 am

1 stop16h 14m

Cincinnati Cinci./N. Kentucky

Tue 7/28

12:18 pm-8:57 am

1 stop21h 39m

$179

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Fri 7/3

5:06 pm-11:47 am

1 stop17h 41m

Cincinnati Cinci./N. Kentucky

Fri 7/10

12:53 pm-8:57 am

1 stop21h 04m

$181

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Mon 7/20

4:57 pm-11:13 am

1 stop17h 16m

Cincinnati Cinci./N. Kentucky

Thu 7/23

12:18 pm-5:37 pm

1 stop6h 19m

$187

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Sun 7/12

6:34 pm-11:48 am

1 stop16h 14m

Cincinnati Cinci./N. Kentucky

Fri 7/17

12:53 pm-8:57 am

1 stop21h 04m

$199

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Tue 9/1

4:10 pm-1:25 pm

1 stop20h 15m

Cincinnati Cinci./N. Kentucky

Wed 9/2

8:40 pm-7:36 pm

1 stop23h 56m

$222

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Thu 6/25

6:31 pm-11:49 am

1 stop16h 18m

Cincinnati Cinci./N. Kentucky

Tue 6/30

12:24 pm-5:30 pm

1 stop6h 06m

$232
Quickest round-trip

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Tue 9/1

8:25 am-4:50 pm

1 stop7h 25m

Cincinnati Cinci./N. Kentucky

Wed 9/2

9:05 am-4:45 pm

2 stops8h 40m

$234

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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2

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 September is also cheap. Prices for this month can be found on momondo for an average of $225.

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

As of June 2026, prices for St. Louis to Cincinnati flights are approximately 260% 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 53m

Direct flights

None
The fastest flight from St. Louis to Cincinnati takes 3h 53m
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 53m, 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
American AirlinesPriceFrom $176Free CancellationRating
7.1
11,635 reviews
Search American Airlines flights
DeltaPriceFrom $196Free CancellationRating
7.9
8,396 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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