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

Delta, Frontier, and Southwest are the most popular carriers 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 61% of people opting to fly with this airline when traveling to Cincinnati. Keep in mind that there are 5 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 July 2025, there are 5 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.

$99 Cheap Flights from St. Louis to Cincinnati in 2025

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Find the cheapest flights from St. Louis to Cincinnati

Round-trip

One-way

Last minute

Cheap round-trip flights

7:23 am - 1:53 pmSTL-CVG

5h 30m1 stop

11:07 am - 4:46 pmCVG-STL

6h 39m1 stop

$159American Airlines

Find Deal

jue., ago. 7 - jue., ago. 14

12:28 pm - 7:14 pmSTL-CVG

5h 46m1 stop

6:49 pm - 11:07 pmCVG-STL

5h 18m1 stop

$175American Airlines

Find Deal

mar., sep. 23 - vie., sep. 26

1:35 pm - 10:25 pmSTL-CVG

7h 50m2 stops

6:40 am - 8:40 amCVG-STL

3h 00m1 stop

$180Southwest

Find Deal

mar., sep. 23 - vie., sep. 26

5:25 am - 12:15 pmSTL-CVG

5h 50m2 stops

7:45 am - 11:45 amCVG-STL

5h 00m1 stop

$211Southwest

Find Deal

jue., ago. 28 - dom., ago. 31

6:33 am - 1:14 pmSTL-CVG

5h 41m1 stop

7:45 pm - 10:45 pmCVG-STL

4h 00m1 stop

$239United Airlines

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jue., ago. 7 - dom., ago. 10

5:23 pm - 12:30 amSTL-CVG

6h 07m1 stop

5:40 am - 9:41 amCVG-STL

5h 01m1 stop

$251Delta

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mar., jul. 29 - mié., jul. 30

7:11 pm - 12:30 amSTL-CVG

4h 19m1 stop

6:00 am - 9:33 amCVG-STL

4h 33m1 stop

$252Delta

Find Deal

jue., ago. 7 - dom., ago. 10

5:30 pm - 11:57 pmSTL-CVG

5h 27m1 stop

7:00 am - 3:44 pmCVG-STL

9h 44m1 stop

$255United Airlines

Find Deal

lun., sep. 8 - jue., sep. 11

5:40 pm - 3:09 pmSTL-CVG

20h 29m1 stop

3:44 pm - 1:42 pmCVG-STL

22h 58m1 stop

$271Frontier

Find Deal

mar., jul. 22 - jue., jul. 24

5:40 pm - 1:19 amSTL-CVG

6h 39m1 stop

12:16 pm - 11:47 pmCVG-STL

12h 31m1 stop

$274Frontier

Find Deal

jue., jul. 24 - lun., jul. 28

Frontier flights from St. Louis to Cincinnati

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

Frontier

Jul 22

STL5:40 pmLambert-St Louis

20h 29m

1 stop

CVG3:09 pmCincinnati Cinci./N. Kentucky

Jul 24

CVG3:44 pmCincinnati Cinci./N. Kentucky

22h 58m

1 stop

STL1:42 pmLambert-St Louis

$271

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Frontier

Jul 24

STL5:40 pmLambert-St Louis

6h 39m

1 stop

CVG1:19 amCincinnati Cinci./N. Kentucky

Jul 28

CVG12:16 pmCincinnati Cinci./N. Kentucky

12h 31m

1 stop

STL11:47 pmLambert-St Louis

$274

Find similar

Frontier

Aug 8

STL5:40 pmLambert-St Louis

6h 39m

1 stop

CVG1:19 amCincinnati Cinci./N. Kentucky

Aug 10

CVG5:10 amCincinnati Cinci./N. Kentucky

19h 37m

1 stop

STL11:47 pmLambert-St Louis

$281

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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 7

STL6:33 amLambert-St Louis

5h 41m

1 stop

CVG1:14 pmCincinnati Cinci./N. Kentucky

Aug 10

CVG7:45 pmCincinnati Cinci./N. Kentucky

4h 00m

1 stop

STL10:45 pmLambert-St Louis

$239

Find similar

United Airlines

Sep 8

STL5:30 pmLambert-St Louis

5h 27m

1 stop

CVG11:57 pmCincinnati Cinci./N. Kentucky

Sep 11

CVG7:00 amCincinnati Cinci./N. Kentucky

9h 44m

1 stop

STL3:44 pmLambert-St Louis

$255

Find similar

United Airlines

Sep 8

STL5:30 pmLambert-St Louis

5h 27m

1 stop

CVG11:57 pmCincinnati Cinci./N. Kentucky

Sep 11

CVG7:41 pmCincinnati Cinci./N. Kentucky

19h 38m

1 stop

STL2:19 pmLambert-St Louis

$269

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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

What is the cheapest month to fly to Cincinnati?

The month of July is, on average, the cheapest month to fly to Cincinnati from St. Louis, with most prices found around $289. If you aren’t able to travel to Cincinnati during the month of July, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $291.

What is the cheapest day to depart on your flight to Cincinnati?

According to our data, Saturday is the cheapest day to fly to Cincinnati from St. Louis. The lowest ticket price found for a Saturday departure recently was $263. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. On the other hand, Monday is the most expensive day to depart from St. Louis because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $424.

What is the cheapest time of day to depart on your flight to Cincinnati?

Our most recent data shows that the best time of day to fly to Cincinnati is in the evening. Flights from St. Louis to Cincinnati during this time can be as low as $248. In the morning is when there is more demand to fly to Cincinnati, so prices are often more expensive at around $346 per ticket.

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

As of July 2025, prices for St. Louis to Cincinnati flights are approximately 55% 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

Best Price Found	$99
Fastest flight time	4h 02m
Direct flights	None
Airports in Cincinnati	1 airport

The best one-way flight to Cincinnati from St. Louis in the past 72 hours is $99. The best round-trip flight deal from St. Louis to Cincinnati found on momondo in the last 72 hours is $159.

The fastest flight from St. Louis to Cincinnati takes 4h 02m

There are no direct flights from St. Louis to Cincinnati. Popular non-direct route for this connection is Lambert-St Louis Airport - Cincinnati Cinci./N. Kentucky Airport.

There is 1 airport near Cincinnati: Cincinnati Cinci./N. Kentucky (CVG)

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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 02m, 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 July 2025, there are 5 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 55% of the total bookings. Other popular airlines include Delta with 13%, United Airlines with 12%, and Southwest with 11%.

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
Frontier	PriceFrom $128	Free Cancellation	Rating 5.9 3,271 reviews	Search Frontier flights
Delta	PriceFrom $226	Free Cancellation	Rating 8.0 7,952 reviews	Search Delta flights
American Airlines	PriceFrom $231	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom $261	Free Cancellation	Rating 7.4 8,846 reviews	Search United Airlines flights
Southwest	PriceFrom $326	Free Cancellation	Rating 8.0 4,250 reviews	Search Southwest flights

Florence

Mason

Sharonville

Newport

Covington

Middletown

Williamstown

Lawrenceburg

West Chester

Blue Ash

Fairfield

Oxford

Dry Ridge

Edgewood

Monroe

Trenton

Hebron

Corinth

Bethel

Ghent

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 $99

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 8/5. 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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Frontier flights from St. Louis to Cincinnati

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

United Airlines flights from St. Louis to Cincinnati

Our best United Airlines deals on St. Louis to Cincinnati flight tickets

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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?

What is the cheapest day to depart on your flight to Cincinnati?

What is the cheapest time of day to depart on your flight to Cincinnati?

Our most recent data shows that the best time of day to fly to Cincinnati is in the evening. Flights from St. Louis to Cincinnati during this time can be as low as $248. In the morning is when there is more demand to fly to Cincinnati, so prices are often more expensive at around $346 per ticket.

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

As of July 2025, prices for St. Louis to Cincinnati flights are approximately 55% 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?

Delta, Frontier, and Southwest are the most popular carriers 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

Best Price Found

Fastest flight time

Direct flights

Airports in Cincinnati

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