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Cheap flights from St. Louis to Cincinnati from $85

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 7/17. 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
$166Frontier
Tue, Jul 14 - Thu, Jul 16
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
$167Frontier
Mon, Sep 21 - Thu, Sep 24
Frontier Logo
4:57 pm - 11:48 am
STL
-
CVG
17h 51m
1 stop
Frontier Logo
12:18 pm - 8:57 am
CVG
-
STL
21h 39m
1 stop
$168Frontier
Fri, Jul 17 - Sun, Jul 19
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
$169Frontier
Tue, Jul 21 - Sun, Jul 26
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
$186Frontier
Thu, Jul 16 - Sun, Jul 19
Frontier Logo
4:57 pm - 11:13 am
STL
-
CVG
17h 16m
1 stop
Frontier Logo
2:52 pm - 11:59 pm
CVG
-
STL
10h 07m
1 stop
$206Frontier
Sat, Aug 8 - Sat, Aug 15
Multiple Airlines Logo
6:34 pm - 11:48 am
STL
-
CVG
16h 14m
1 stop
Multiple Airlines Logo
1:14 pm - 5:37 pm
CVG
-
STL
29h 23m
2 stops
$212Multiple Airlines
Thu, Aug 6 - Mon, Aug 10
Multiple Airlines Logo
6:34 pm - 11:48 am
STL
-
CVG
16h 14m
1 stop
Multiple Airlines Logo
1:14 pm - 5:37 pm
CVG
-
STL
29h 23m
2 stops
$213Multiple Airlines
Thu, Aug 6 - Mon, Aug 10
Frontier Logo
10:35 am - 8:17 am
STL
-
CVG
20h 42m
2 stops
Frontier Logo
12:48 pm - 9:40 am
CVG
-
STL
21h 52m
1 stop
$214Frontier
Mon, Sep 21 - Thu, Sep 24
Frontier Logo
6:34 pm - 11:48 am
STL
-
CVG
16h 14m
1 stop
Frontier Logo
9:30 pm - 11:59 pm
CVG
-
STL
27h 29m
1 stop
$216Frontier
Thu, Jul 16 - Mon, Jul 27

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United Airlines flights from St. Louis to Cincinnati

Our best United Airlines deals on St. Louis to Cincinnati flight tickets
United Airlines
Aug 18
STL7:25 amLambert-St Louis
4h 44m
1 stop
CVG1:09 pmCincinnati Cinci./N. Kentucky
Aug 19
CVG6:26 pmCincinnati Cinci./N. Kentucky
5h 33m
1 stop
STL10:59 pmLambert-St Louis
$343
United Airlines
Sep 25
STL11:35 amLambert-St Louis
4h 25m
1 stop
CVG5:00 pmCincinnati Cinci./N. Kentucky
Sep 27
CVG10:50 amCincinnati Cinci./N. Kentucky
5h 53m
1 stop
STL3:43 pmLambert-St Louis
$347

Southwest flights from St. Louis to Cincinnati

Our best Southwest deals on St. Louis to Cincinnati flight tickets
Southwest
Jul 21
STL3:15 pmLambert-St Louis
6h 55m
2 stops
CVG11:10 pmCincinnati Cinci./N. Kentucky
Jul 28
CVG7:00 amCincinnati Cinci./N. Kentucky
8h 50m
2 stops
STL2:50 pmLambert-St Louis
$283
Southwest
Sep 21
STL6:55 amLambert-St Louis
13h 40m
2 stops
CVG9:35 pmCincinnati Cinci./N. Kentucky
Sep 23
CVG5:30 pmCincinnati Cinci./N. Kentucky
5h 40m
1 stop
STL10:10 pmLambert-St Louis
$292
Southwest
Aug 6
STL12:15 pmLambert-St Louis
8h 20m
2 stops
CVG9:35 pmCincinnati Cinci./N. Kentucky
Aug 10
CVG2:10 pmCincinnati Cinci./N. Kentucky
5h 15m
1 stop
STL6:25 pmLambert-St Louis
$294

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 24, 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
Quickest round-trip

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Tue 7/14

6:34 pm-11:48 am

1 stop16h 14m

Cincinnati Cinci./N. Kentucky

Thu 7/16

12:18 pm-5:37 pm

1 stop6h 19m

$166

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Mon 9/21

10:35 am-11:43 am

1 stop24h 08m

Cincinnati Cinci./N. Kentucky

Thu 9/24

12:48 pm-9:40 am

1 stop21h 52m

$167

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Fri 7/17

4:57 pm-11:48 am

1 stop17h 51m

Cincinnati Cinci./N. Kentucky

Sun 7/19

12:18 pm-8:57 am

1 stop21h 39m

$168

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Tue 7/21

6:34 pm-11:48 am

1 stop16h 14m

Cincinnati Cinci./N. Kentucky

Sun 7/26

12:18 pm-8:57 am

1 stop21h 39m

$169

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Thu 7/16

6:34 pm-11:48 am

1 stop16h 14m

Cincinnati Cinci./N. Kentucky

Sun 7/19

12:18 pm-5:37 pm

1 stop6h 19m

$186

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Sat 8/8

4:57 pm-11:13 am

1 stop17h 16m

Cincinnati Cinci./N. Kentucky

Sat 8/15

2:52 pm-11:59 pm

1 stop10h 07m

$206

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Thu 8/6

6:34 pm-11:48 am

1 stop16h 14m

Cincinnati Cinci./N. Kentucky

Mon 8/10

1:14 pm-5:37 pm

2 stops29h 23m

$212

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Thu 8/6

6:34 pm-11:48 am

1 stop16h 14m

Cincinnati Cinci./N. Kentucky

Mon 8/10

1:14 pm-5:37 pm

2 stops29h 23m

$213

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Mon 9/21

10:35 am-8:17 am

2 stops20h 42m

Cincinnati Cinci./N. Kentucky

Thu 9/24

12:48 pm-9:40 am

1 stop21h 52m

$214

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Thu 7/16

6:34 pm-11:48 am

1 stop16h 14m

Cincinnati Cinci./N. Kentucky

Mon 7/27

9:30 pm-11:59 pm

1 stop27h 29m

$216

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 June 2026, prices for St. Louis to Cincinnati flights are approximately 209% 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 15m

Direct flights

None
The fastest flight from St. Louis to Cincinnati takes 3h 15m
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 15m, 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
11,751 reviews
Search American Airlines flights
DeltaPriceFrom $196Free CancellationRating
7.8
8,432 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
Dry Ridge
Monroe
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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