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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Cheap round-trip flights

American Airlines Logo
7:23 am - 1:53 pmSTL-CVG
5h 30m1 stop
American Airlines Logo
11:07 am - 4:46 pmCVG-STL
6h 39m1 stop
$159American Airlines
Find Deal
jue., ago. 7 - jue., ago. 14
American Airlines Logo
12:28 pm - 7:14 pmSTL-CVG
5h 46m1 stop
American Airlines Logo
6:49 pm - 11:07 pmCVG-STL
5h 18m1 stop
$175American Airlines
Find Deal
mar., sep. 23 - vie., sep. 26
Southwest Logo
1:35 pm - 10:25 pmSTL-CVG
7h 50m2 stops
Southwest Logo
6:40 am - 8:40 amCVG-STL
3h 00m1 stop
$180Southwest
Find Deal
mar., sep. 23 - vie., sep. 26
Southwest Logo
5:25 am - 12:15 pmSTL-CVG
5h 50m2 stops
Southwest Logo
7:45 am - 11:45 amCVG-STL
5h 00m1 stop
$211Southwest
Find Deal
jue., ago. 28 - dom., ago. 31
United Airlines Logo
6:33 am - 1:14 pmSTL-CVG
5h 41m1 stop
United Airlines Logo
7:45 pm - 10:45 pmCVG-STL
4h 00m1 stop
$239United Airlines
Find Deal
jue., ago. 7 - dom., ago. 10
Delta Logo
5:23 pm - 12:30 amSTL-CVG
6h 07m1 stop
Delta Logo
5:40 am - 9:41 amCVG-STL
5h 01m1 stop
$251Delta
Find Deal
mar., jul. 29 - mié., jul. 30
Delta Logo
7:11 pm - 12:30 amSTL-CVG
4h 19m1 stop
Delta Logo
6:00 am - 9:33 amCVG-STL
4h 33m1 stop
$252Delta
Find Deal
jue., ago. 7 - dom., ago. 10
United Airlines Logo
5:30 pm - 11:57 pmSTL-CVG
5h 27m1 stop
United Airlines Logo
7:00 am - 3:44 pmCVG-STL
9h 44m1 stop
$255United Airlines
Find Deal
lun., sep. 8 - jue., sep. 11
Frontier Logo
5:40 pm - 3:09 pmSTL-CVG
20h 29m1 stop
Frontier Logo
3:44 pm - 1:42 pmCVG-STL
22h 58m1 stop
$271Frontier
Find Deal
mar., jul. 22 - jue., jul. 24
Frontier Logo
5:40 pm - 1:19 amSTL-CVG
6h 39m1 stop
Frontier Logo
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
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
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

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
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
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

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 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)

  • 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?

  • 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 $128Free CancellationRating
5.9
3,271 reviews
Search Frontier flights
DeltaPriceFrom $226Free CancellationRating
8.0
7,952 reviews
Search Delta flights
American AirlinesPriceFrom $231Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $261Free CancellationRating
7.4
8,846 reviews
Search United Airlines flights
SouthwestPriceFrom $326Free CancellationRating
8.0
4,250 reviews
Search Southwest 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
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.


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1 adult
mar. 7/15
mar. 7/22

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