What is the cheapest airline that flies from Lambert-St Louis to Cincinnati Cinci./N. Kentucky?

Frontier is the most popular carrier operating from Lambert-St Louis to Cincinnati Cinci./N. Kentucky

What airlines fly to Cincinnati?

American Airlines, Delta and Southwest are the top three most popular airlines that fly to Cincinnati from St. Louis according to our data. American Airlines is the first choice among our users, with 60% of people opting to fly with this airline when traveling to Cincinnati. Keep in mind that there are 4 different airlines that fly to Cincinnati on a routine basis, so you have a few additional options to choose from.

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?

As of January 2026, there are 2 operators available to choose from 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.

$68 Cheap Flights from St. Louis to Cincinnati in 2026

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One-way

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Cheap round-trip flights

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3:49 pm - 12:59 am

STL

CVG

8h 10m

1 stop

1:07 pm - 6:51 am

CVG

STL

18h 44m

1 stop

$154Frontier

Fri, Feb 27 - Sun, Mar 1

12:36 pm - 9:25 pm

STL

CVG

7h 49m

1 stop

1:07 pm - 6:51 am

CVG

STL

18h 44m

1 stop

$184Frontier

Sat, Feb 28 - Sun, Mar 1

3:49 pm - 12:59 am

STL

CVG

8h 10m

1 stop

6:42 pm - 1:09 pm

CVG

STL

19h 27m

2 stops

$216Frontier

Fri, Feb 27 - Sun, Mar 1

12:36 pm - 9:25 pm

STL

CVG

7h 49m

1 stop

6:42 pm - 1:09 pm

CVG

STL

19h 27m

2 stops

$242Frontier

Sat, Feb 28 - Sun, Mar 1

7:40 am - 8:19 pm

STL

CVG

11h 39m

1 stop

10:10 am - 10:56 pm

CVG

STL

13h 46m

1 stop

$243United Airlines

Wed, Mar 25 - Wed, Apr 1

7:30 am - 11:45 am

STL

CVG

3h 15m

1 stop

4:15 pm - 10:15 pm

CVG

STL

7h 00m

1 stop

$255Southwest

Tue, Mar 24 - Tue, Mar 24

1:39 pm - 8:10 pm

STL

CVG

5h 31m

1 stop

11:56 am - 4:32 pm

CVG

STL

5h 36m

1 stop

$267Delta

Mon, Mar 23 - Tue, Mar 24

4:51 pm - 4:44 pm

STL

CVG

22h 53m

1 stop

7:20 am - 9:49 am

CVG

STL

27h 29m

1 stop

$275Frontier

Wed, Mar 18 - Sun, Mar 22

7:41 am - 8:18 pm

STL

CVG

11h 37m

1 stop

6:05 am - 10:58 am

CVG

STL

5h 53m

1 stop

$279United Airlines

Wed, Feb 18 - Sat, Feb 21

11:27 am - 6:33 pm

STL

CVG

6h 06m

1 stop

7:56 pm - 10:31 am

CVG

STL

15h 35m

2 stops

$280Frontier

Tue, Mar 24 - Wed, Mar 25

Delta flights from St. Louis to Cincinnati

Our best Delta deals on St. Louis to Cincinnati flight tickets

Delta

Mar 23

STL1:39 pmLambert-St Louis

5h 31m

1 stop

CVG8:10 pmCincinnati Cinci./N. Kentucky

Mar 24

CVG11:56 amCincinnati Cinci./N. Kentucky

5h 36m

1 stop

STL4:32 pmLambert-St Louis

$267

Delta

Mar 21

STL6:32 amLambert-St Louis

4h 02m

1 stop

CVG11:34 amCincinnati Cinci./N. Kentucky

Mar 25

CVG1:00 pmCincinnati Cinci./N. Kentucky

4h 32m

1 stop

STL4:32 pmLambert-St Louis

$291

Delta

Mar 7

STL5:01 pmLambert-St Louis

4h 00m

1 stop

CVG10:01 pmCincinnati Cinci./N. Kentucky

Mar 13

CVG7:50 pmCincinnati Cinci./N. Kentucky

5h 08m

1 stop

STL11:58 pmLambert-St Louis

$303

Frontier flights from St. Louis to Cincinnati

Our best Frontier deals on St. Louis to Cincinnati flight tickets

Frontier

Feb 27

STL3:49 pmLambert-St Louis

8h 10m

1 stop

CVG12:59 amCincinnati Cinci./N. Kentucky

Mar 1

CVG1:07 pmCincinnati Cinci./N. Kentucky

18h 44m

1 stop

STL6:51 amLambert-St Louis

$154

Frontier

Feb 28

STL12:36 pmLambert-St Louis

7h 49m

1 stop

CVG9:25 pmCincinnati Cinci./N. Kentucky

Mar 1

CVG1:07 pmCincinnati Cinci./N. Kentucky

18h 44m

1 stop

STL6:51 amLambert-St Louis

$184

Frontier

Feb 5

STL5:42 pmLambert-St Louis

18h 18m

1 stop

CVG1:00 pmCincinnati Cinci./N. Kentucky

Feb 10

CVG3:20 pmCincinnati Cinci./N. Kentucky

8h 07m

1 stop

STL10:27 pmLambert-St Louis

$208

Fly from

Fly to

Route

Depart

Return

Price

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Fri 2/27

3:49 pm-12:59 am

1 stop8h 10m

Cincinnati Cinci./N. Kentucky

Sun 3/1

1:07 pm-6:51 am

1 stop18h 44m

$154

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Sat 2/28

12:36 pm-9:25 pm

1 stop7h 49m

Cincinnati Cinci./N. Kentucky

Sun 3/1

1:07 pm-6:51 am

1 stop18h 44m

$184

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Fri 2/27

3:49 pm-12:59 am

1 stop8h 10m

Cincinnati Cinci./N. Kentucky

Sun 3/1

6:42 pm-1:09 pm

2 stops19h 27m

$216

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Sat 2/28

12:36 pm-9:25 pm

1 stop7h 49m

Cincinnati Cinci./N. Kentucky

Sun 3/1

6:42 pm-1:09 pm

2 stops19h 27m

$242

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Wed 3/25

7:40 am-8:19 pm

1 stop11h 39m

Cincinnati Cinci./N. Kentucky

Wed 4/1

10:10 am-10:56 pm

1 stop13h 46m

$243

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Tue 3/24

7:30 am-11:45 am

1 stop3h 15m

Cincinnati Cinci./N. Kentucky

Tue 3/24

4:15 pm-10:15 pm

1 stop7h 00m

$255

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Mon 3/23

1:39 pm-8:10 pm

1 stop5h 31m

Cincinnati Cinci./N. Kentucky

Tue 3/24

11:56 am-4:32 pm

1 stop5h 36m

$267

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Wed 3/18

4:51 pm-4:44 pm

1 stop22h 53m

Cincinnati Cinci./N. Kentucky

Sun 3/22

7:20 am-9:49 am

1 stop27h 29m

$275

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Wed 2/18

7:41 am-8:18 pm

1 stop11h 37m

Cincinnati Cinci./N. Kentucky

Sat 2/21

6:05 am-10:58 am

1 stop5h 53m

$279

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Tue 3/24

11:27 am-6:33 pm

1 stop6h 06m

Cincinnati Cinci./N. Kentucky

Wed 3/25

7:56 pm-10:31 am

2 stops15h 35m

$280

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

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

As of January 2026, prices for St. Louis to Cincinnati flights are approximately 8% cheaper 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	4h 00m
Direct flights	None

The fastest flight from St. Louis to Cincinnati takes 4h 00m

There are no direct flights from St. Louis to Cincinnati. There are no popular flight routes from St. Louis to Cincinnati.

Search flight deals

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 4h 00m, 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?
As of January 2026, there are 2 operators available to choose from 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?
Based on momondo bookings for flights between St. Louis and Cincinnati, the leading airline is American Airlines, making up 66% of the total bookings. Other popular airlines include Delta with 34%.

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 Airlines	PriceFrom $196	Free Cancellation	Rating 7.2 11,205 reviews		Search American Airlines flights
Delta	PriceFrom $196	Free Cancellation	Rating 7.9 8,128 reviews		Search Delta flights

Florence

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Newport

Sharonville

Covington

Middletown

Williamstown

Lawrenceburg

Blue Ash

Fairfield

West Chester

Oxford

Dry Ridge

Monroe

Hebron

Edgewood

Bethel

Trenton

Corinth

Georgetown

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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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 2/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Delta flights from St. Louis to Cincinnati

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See travel insights to Cincinnati from

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

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

As of January 2026, prices for St. Louis to Cincinnati flights are approximately 8% cheaper when compared to flights at the same time last year.

What is the cheapest airline that flies from Lambert-St Louis to Cincinnati Cinci./N. Kentucky?

Frontier is the most popular carrier operating from Lambert-St Louis to Cincinnati Cinci./N. Kentucky

What airlines fly to Cincinnati?

When to book flights from St. Louis to Cincinnati

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

Direct flights

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

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

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?

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

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

Traveling to a place near Cincinnati?

Why use momondo?

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

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

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

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

An easier way to manage your Cincinnati trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Ohio