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Cheap flights from St. Louis to Cincinnati from $48

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from St. Louis to Cincinnati

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
6:35 pm - 11:38 amSTL  Lambert-St Louis-CVG Cincinnati Cinci./N. Kentucky
16h 03m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
12:43 pm - 5:40 pmCVG  Cincinnati Cinci./N. Kentucky-STL Lambert-St Louis
5h 57m1 stop Atlanta Hartsfield-Jackson
$120Frontier
Mon, Oct 19 - Wed, Oct 21
Frontier Logo
6:44 pm - 9:19 amSTL  Lambert-St Louis-CVG Cincinnati Cinci./N. Kentucky
13h 35m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
7:59 pm - 5:40 pmCVG  Cincinnati Cinci./N. Kentucky-STL Lambert-St Louis
46h 41m2 stops Orlando Atlanta Hartsfield-Jackson
$139Frontier
Wed, Nov 4 - Mon, Nov 9
Frontier Logo
6:35 pm - 7:50 amSTL  Lambert-St Louis-CVG Cincinnati Cinci./N. Kentucky
12h 15m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
12:43 pm - 11:13 pmCVG  Cincinnati Cinci./N. Kentucky-STL Lambert-St Louis
11h 30m2 stops Atlanta Hartsfield-Jackson Orlando
$161Frontier
Wed, Oct 21 - Mon, Oct 26
Frontier Logo
6:35 pm - 7:14 pmSTL  Lambert-St Louis-CVG Cincinnati Cinci./N. Kentucky
23h 39m2 stops Atlanta Hartsfield-Jackson Orlando
Frontier Logo
12:43 pm - 5:40 pmCVG  Cincinnati Cinci./N. Kentucky-STL Lambert-St Louis
5h 57m1 stop Atlanta Hartsfield-Jackson
$165Frontier
Mon, Oct 19 - Wed, Oct 21
Frontier Logo
12:02 pm - 8:23 pmSTL  Lambert-St Louis-CVG Cincinnati Cinci./N. Kentucky
7h 21m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
9:24 am - 12:12 amCVG  Cincinnati Cinci./N. Kentucky-STL Lambert-St Louis
15h 48m2 stops Atlanta Hartsfield-Jackson Orlando
$166Frontier
Fri, Dec 4 - Mon, Dec 7
Frontier Logo
6:44 pm - 9:19 amSTL  Lambert-St Louis-CVG Cincinnati Cinci./N. Kentucky
13h 35m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
5:18 pm - 11:19 amCVG  Cincinnati Cinci./N. Kentucky-STL Lambert-St Louis
19h 01m2 stops Atlanta Hartsfield-Jackson Dallas/Fort Worth
$178Frontier
Wed, Oct 28 - Thu, Oct 29
Frontier Logo
6:35 pm - 7:50 amSTL  Lambert-St Louis-CVG Cincinnati Cinci./N. Kentucky
12h 15m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
12:43 pm - 5:40 pmCVG  Cincinnati Cinci./N. Kentucky-STL Lambert-St Louis
5h 57m1 stop Atlanta Hartsfield-Jackson
$182Frontier
Wed, Oct 21 - Mon, Oct 26
Frontier Logo
6:44 pm - 9:19 amSTL  Lambert-St Louis-CVG Cincinnati Cinci./N. Kentucky
13h 35m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
2:19 pm - 11:16 pmCVG  Cincinnati Cinci./N. Kentucky-STL Lambert-St Louis
9h 57m1 stop Orlando
$204Frontier
Wed, Oct 28 - Mon, Nov 2
Frontier Logo
6:44 pm - 9:19 amSTL  Lambert-St Louis-CVG Cincinnati Cinci./N. Kentucky
13h 35m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
2:19 pm - 11:16 pmCVG  Cincinnati Cinci./N. Kentucky-STL Lambert-St Louis
9h 57m1 stop Orlando
$208Frontier
Wed, Nov 4 - Mon, Nov 9
Frontier Logo
6:44 pm - 9:19 amSTL  Lambert-St Louis-CVG Cincinnati Cinci./N. Kentucky
13h 35m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
5:57 pm - 12:33 pmCVG  Cincinnati Cinci./N. Kentucky-STL Lambert-St Louis
19h 36m1 stop Las Vegas Harry Reid Intl
$213Frontier
Wed, Oct 28 - Thu, Oct 29

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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
Nov 24
STL8:30 amLambert-St Louis
5h 54m
1 stop
CVG3:24 pmCincinnati Cinci./N. Kentucky
Nov 29
CVG7:00 amCincinnati Cinci./N. Kentucky
4h 32m
1 stop
STL10:32 amLambert-St Louis
$481
United Airlines
Oct 13
STL3:11 pmLambert-St Louis
4h 05m
1 stop
CVG8:16 pmCincinnati Cinci./N. Kentucky
Oct 17
CVG4:10 pmCincinnati Cinci./N. Kentucky
3h 50m
1 stop
STL7:00 pmLambert-St Louis
$579
United Airlines
Oct 7
STL1:09 pmLambert-St Louis
4h 51m
1 stop
CVG7:00 pmCincinnati Cinci./N. Kentucky
Oct 8
CVG7:00 amCincinnati Cinci./N. Kentucky
4h 48m
1 stop
STL10:48 amLambert-St Louis
$710

Frontier flights from St. Louis to Cincinnati

Our best Frontier deals on St. Louis to Cincinnati flight tickets
Frontier
Oct 19
STL6:35 pmLambert-St Louis
16h 03m
1 stop
CVG11:38 amCincinnati Cinci./N. Kentucky
Oct 21
CVG12:43 pmCincinnati Cinci./N. Kentucky
5h 57m
1 stop
STL5:40 pmLambert-St Louis
$120
Frontier
Nov 4
STL6:44 pmLambert-St Louis
13h 35m
1 stop
CVG9:19 amCincinnati Cinci./N. Kentucky
Nov 9
CVG7:59 pmCincinnati Cinci./N. Kentucky
46h 41m
2 stops
STL5:40 pmLambert-St Louis
$139
Frontier
Oct 21
STL6:35 pmLambert-St Louis
12h 15m
1 stop
CVG7:50 amCincinnati Cinci./N. Kentucky
Oct 26
CVG12:43 pmCincinnati Cinci./N. Kentucky
11h 30m
2 stops
STL11:13 pmLambert-St Louis
$161

momondo Fare Finder

 
Use the filters below to find and compare flights from St. Louis to Cincinnati that are best for you.

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Route

Depart

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Price

Cheapest round-trip

St. LouisCincinnati

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

STLCVG

Lambert-St Louis

Mon 10/19

6:35 pm-11:38 am

1 stop16h 03m

Cincinnati Cinci./N. Kentucky

Wed 10/21

12:43 pm-5:40 pm

1 stop5h 57m

$120

St. LouisCincinnati

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

STLCVG

Lambert-St Louis

Wed 11/4

6:44 pm-9:19 am

1 stop13h 35m

Cincinnati Cinci./N. Kentucky

Mon 11/9

7:59 pm-5:40 pm

2 stops46h 41m

$139

St. LouisCincinnati

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

STLCVG

Lambert-St Louis

Wed 10/21

6:35 pm-7:50 am

1 stop12h 15m

Cincinnati Cinci./N. Kentucky

Mon 10/26

12:43 pm-11:13 pm

2 stops11h 30m

$161

St. LouisCincinnati

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

STLCVG

Lambert-St Louis

Mon 10/19

6:35 pm-7:14 pm

2 stops23h 39m

Cincinnati Cinci./N. Kentucky

Wed 10/21

12:43 pm-5:40 pm

1 stop5h 57m

$165

St. LouisCincinnati

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

STLCVG

Lambert-St Louis

Fri 12/4

12:02 pm-8:23 pm

1 stop7h 21m

Cincinnati Cinci./N. Kentucky

Mon 12/7

9:24 am-12:12 am

2 stops15h 48m

$166

St. LouisCincinnati

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

STLCVG

Lambert-St Louis

Wed 10/28

6:44 pm-9:19 am

1 stop13h 35m

Cincinnati Cinci./N. Kentucky

Thu 10/29

5:18 pm-11:19 am

2 stops19h 01m

$178
Quickest round-trip

St. LouisCincinnati

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

STLCVG

Lambert-St Louis

Wed 10/21

6:35 pm-7:50 am

1 stop12h 15m

Cincinnati Cinci./N. Kentucky

Mon 10/26

12:43 pm-5:40 pm

1 stop5h 57m

$182

St. LouisCincinnati

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

STLCVG

Lambert-St Louis

Wed 10/28

6:44 pm-9:19 am

1 stop13h 35m

Cincinnati Cinci./N. Kentucky

Mon 11/2

2:19 pm-11:16 pm

1 stop9h 57m

$204

St. LouisCincinnati

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

STLCVG

Lambert-St Louis

Wed 11/4

6:44 pm-9:19 am

1 stop13h 35m

Cincinnati Cinci./N. Kentucky

Mon 11/9

2:19 pm-11:16 pm

1 stop9h 57m

$208

St. LouisCincinnati

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

STLCVG

Lambert-St Louis

Wed 10/28

6:44 pm-9:19 am

1 stop13h 35m

Cincinnati Cinci./N. Kentucky

Thu 10/29

5:57 pm-12:33 pm

1 stop19h 36m

$213

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 September 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 September, 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 October 2026, prices for St. Louis to Cincinnati flights are approximately 66% 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

Best Price Found

$48

Fastest flight time

5h 10m

Direct flights

None
The best one-way flight to Cincinnati from St. Louis in the past 72 hours is $48. The best round-trip flight deal from St. Louis to Cincinnati found on momondo in the last 72 hours is $120.
The fastest flight from St. Louis to Cincinnati takes 5h 10m
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 5h 10m, 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 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.

Traveling to a place near Cincinnati?

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