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Cheap flights from St. Louis to Cincinnati from $68

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 9/9. 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
6:17 pm - 11:21 amSTL  Lambert-St Louis-CVG Cincinnati Cinci./N. Kentucky
16h 04m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
12:43 pm - 1:10 pmCVG  Cincinnati Cinci./N. Kentucky-STL Lambert-St Louis
25h 27m1 stop Atlanta Hartsfield-Jackson
$121Frontier
Mon, Sep 7 - Thu, Sep 10
Frontier Logo
6:17 pm - 11:21 amSTL  Lambert-St Louis-CVG Cincinnati Cinci./N. Kentucky
16h 04m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
12:43 pm - 1:10 pmCVG  Cincinnati Cinci./N. Kentucky-STL Lambert-St Louis
25h 27m1 stop Atlanta Hartsfield-Jackson
$127Frontier
Thu, Sep 3 - Thu, Sep 10
Frontier Logo
6:17 pm - 11:21 amSTL  Lambert-St Louis-CVG Cincinnati Cinci./N. Kentucky
16h 04m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
12:26 pm - 5:22 pmCVG  Cincinnati Cinci./N. Kentucky-STL Lambert-St Louis
5h 56m1 stop Atlanta Hartsfield-Jackson
$133Frontier
Thu, Aug 27 - Mon, Aug 31
Frontier Logo
6:17 pm - 11:21 amSTL  Lambert-St Louis-CVG Cincinnati Cinci./N. Kentucky
16h 04m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
12:26 pm - 5:22 pmCVG  Cincinnati Cinci./N. Kentucky-STL Lambert-St Louis
5h 56m1 stop Atlanta Hartsfield-Jackson
$138Frontier
Thu, Aug 27 - Sun, Aug 30
American Airlines Logo
1:25 pm - 6:59 pmSTL  Lambert-St Louis-CVG Cincinnati Cinci./N. Kentucky
4h 34m1 stop Chicago O'Hare Intl
American Airlines Logo
1:38 pm - 4:48 pmCVG  Cincinnati Cinci./N. Kentucky-STL Lambert-St Louis
4h 10m1 stop Chicago O'Hare Intl
$291American Airlines
Tue, Sep 8 - Sat, Sep 12
Southwest Logo
7:15 am - 2:55 pmSTL  Lambert-St Louis-CVG Cincinnati Cinci./N. Kentucky
6h 40m2 stops Nashville Intl Chicago Midway
Southwest Logo
5:50 am - 10:50 amCVG  Cincinnati Cinci./N. Kentucky-STL Lambert-St Louis
6h 00m1 stop Baltimore/Washington
$296Southwest
Tue, Sep 8 - Sat, Sep 12
Delta Logo
7:20 pm - 12:16 amSTL  Lambert-St Louis-CVG Cincinnati Cinci./N. Kentucky
3h 56m1 stop Atlanta Hartsfield-Jackson
Delta Logo
3:00 pm - 6:15 pmCVG  Cincinnati Cinci./N. Kentucky-STL Lambert-St Louis
4h 15m1 stop Atlanta Hartsfield-Jackson
$299Delta
Tue, Oct 6 - Wed, Oct 7
Delta Logo
6:40 am - 1:28 pmSTL  Lambert-St Louis-CVG Cincinnati Cinci./N. Kentucky
5h 48m1 stop Detroit Metropolitan Wayne County
Delta Logo
1:30 pm - 4:32 pmCVG  Cincinnati Cinci./N. Kentucky-STL Lambert-St Louis
4h 02m1 stop Atlanta Hartsfield-Jackson
$299Delta
Sat, Sep 19 - Sat, Sep 26
Southwest Logo
7:15 am - 12:35 pmSTL  Lambert-St Louis-CVG Cincinnati Cinci./N. Kentucky
4h 20m1 stop Nashville Intl
Southwest Logo
2:10 pm - 6:25 pmCVG  Cincinnati Cinci./N. Kentucky-STL Lambert-St Louis
5h 15m1 stop Baltimore/Washington
$299Southwest
Wed, Sep 23 - Thu, Sep 24
Delta Logo
12:00 pm - 5:02 pmSTL  Lambert-St Louis-CVG Cincinnati Cinci./N. Kentucky
4h 02m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:25 pm - 11:42 pmCVG  Cincinnati Cinci./N. Kentucky-STL Lambert-St Louis
6h 17m1 stop Atlanta Hartsfield-Jackson
$312Delta
Tue, Sep 15 - Thu, Sep 17

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Frontier flights from St. Louis to Cincinnati

Our best Frontier deals on St. Louis to Cincinnati flight tickets
Frontier
Sep 7
STL6:17 pmLambert-St Louis
16h 04m
1 stop
CVG11:21 amCincinnati Cinci./N. Kentucky
Sep 10
CVG12:43 pmCincinnati Cinci./N. Kentucky
25h 27m
1 stop
STL1:10 pmLambert-St Louis
$121
Frontier
Sep 3
STL6:17 pmLambert-St Louis
16h 04m
1 stop
CVG11:21 amCincinnati Cinci./N. Kentucky
Sep 10
CVG12:43 pmCincinnati Cinci./N. Kentucky
25h 27m
1 stop
STL1:10 pmLambert-St Louis
$127
Frontier
Aug 27
STL6:17 pmLambert-St Louis
16h 04m
1 stop
CVG11:21 amCincinnati Cinci./N. Kentucky
Aug 31
CVG12:26 pmCincinnati Cinci./N. Kentucky
5h 56m
1 stop
STL5:22 pmLambert-St Louis
$133

American Airlines flights from St. Louis to Cincinnati

Our best American Airlines deals on St. Louis to Cincinnati flight tickets
American Airlines
Aug 10
STL4:54 pmLambert-St Louis
5h 35m
1 stop
CVG11:29 pmCincinnati Cinci./N. Kentucky
Aug 13
CVG8:27 pmCincinnati Cinci./N. Kentucky
4h 47m
1 stop
STL12:14 amLambert-St Louis
$283
American Airlines
Sep 8
STL1:25 pmLambert-St Louis
4h 34m
1 stop
CVG6:59 pmCincinnati Cinci./N. Kentucky
Sep 12
CVG1:38 pmCincinnati Cinci./N. Kentucky
4h 10m
1 stop
STL4:48 pmLambert-St Louis
$291

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 August 7, 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 Lambert-St Louis - CVG Cincinnati Cinci./N. Kentucky

STLCVG

Lambert-St Louis

Mon 9/7

6:17 pm-11:21 am

1 stop16h 04m

Cincinnati Cinci./N. Kentucky

Thu 9/10

12:43 pm-1:10 pm

1 stop25h 27m

$121

St. LouisCincinnati

STL Lambert-St Louis - CVG Cincinnati Cinci./N. Kentucky

STLCVG

Lambert-St Louis

Thu 9/3

6:17 pm-11:21 am

1 stop16h 04m

Cincinnati Cinci./N. Kentucky

Thu 9/10

12:43 pm-1:10 pm

1 stop25h 27m

$127

St. LouisCincinnati

STL Lambert-St Louis - CVG Cincinnati Cinci./N. Kentucky

STLCVG

Lambert-St Louis

Thu 8/27

6:17 pm-11:21 am

1 stop16h 04m

Cincinnati Cinci./N. Kentucky

Mon 8/31

12:26 pm-5:22 pm

1 stop5h 56m

$133

St. LouisCincinnati

STL Lambert-St Louis - CVG Cincinnati Cinci./N. Kentucky

STLCVG

Lambert-St Louis

Thu 8/27

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

$138

St. LouisCincinnati

STL Lambert-St Louis - CVG Cincinnati Cinci./N. Kentucky

STLCVG

Lambert-St Louis

Tue 9/8

1:25 pm-6:59 pm

1 stop4h 34m

Cincinnati Cinci./N. Kentucky

Sat 9/12

1:38 pm-4:48 pm

1 stop4h 10m

$291

St. LouisCincinnati

STL Lambert-St Louis - CVG Cincinnati Cinci./N. Kentucky

STLCVG

Lambert-St Louis

Tue 9/8

7:15 am-2:55 pm

2 stops6h 40m

Cincinnati Cinci./N. Kentucky

Sat 9/12

5:50 am-10:50 am

1 stop6h 00m

$296
Quickest round-trip

St. LouisCincinnati

STL Lambert-St Louis - CVG Cincinnati Cinci./N. Kentucky

STLCVG

Lambert-St Louis

Tue 10/6

7:20 pm-12:16 am

1 stop3h 56m

Cincinnati Cinci./N. Kentucky

Wed 10/7

3:00 pm-6:15 pm

1 stop4h 15m

$299

St. LouisCincinnati

STL Lambert-St Louis - CVG Cincinnati Cinci./N. Kentucky

STLCVG

Lambert-St Louis

Sat 9/19

6:40 am-1:28 pm

1 stop5h 48m

Cincinnati Cinci./N. Kentucky

Sat 9/26

1:30 pm-4:32 pm

1 stop4h 02m

$299

St. LouisCincinnati

STL Lambert-St Louis - CVG Cincinnati Cinci./N. Kentucky

STLCVG

Lambert-St Louis

Wed 9/23

7:15 am-12:35 pm

1 stop4h 20m

Cincinnati Cinci./N. Kentucky

Thu 9/24

2:10 pm-6:25 pm

1 stop5h 15m

$299

St. LouisCincinnati

STL Lambert-St Louis - CVG Cincinnati Cinci./N. Kentucky

STLCVG

Lambert-St Louis

Tue 9/15

12:00 pm-5:02 pm

1 stop4h 02m

Cincinnati Cinci./N. Kentucky

Thu 9/17

6:25 pm-11:42 pm

1 stop6h 17m

$312

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

Prices are currently low for flights on this route.

Typical prices usually range from $346 to $528.
The lowest price recently found on this route was $121.

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 August 2026, prices for St. Louis to Cincinnati flights are approximately 22% 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 25m

Direct flights

None
The fastest flight from St. Louis to Cincinnati takes 3h 25m
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 25m, 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
2,722 reviews
Search Frontier flights
DeltaPriceFrom $234Free CancellationRating
7.8
8,499 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
Sharonville
Newport
Covington
Middletown
West Chester
Williamstown
Blue Ash
Fairfield
Lawrenceburg
Oxford
Hebron
Monroe
Dry Ridge
Trenton
Bethel
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.

An easier way to manage your Cincinnati trip

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