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Cheap flights from Cincinnati to St. Louis from $85

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Cincinnati to St. Louis departing on 4/29. 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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0 bags

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Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Cincinnati to St. Louis.
Frontier Logo
12:54 pm - 12:04 amCVG-STL
12h 10m1 stop
Frontier Logo
5:45 pm - 12:59 amSTL-CVG
6h 14m1 stop
$158Frontier
Find Deal
lun., abr. 28 - dom., may. 4
Frontier Logo
2:01 pm - 11:46 pmCVG-STL
10h 45m1 stop
Frontier Logo
6:33 pm - 5:15 amSTL-CVG
9h 42m1 stop
$178Frontier
Find Deal
mar., abr. 15 - sáb., abr. 19
Frontier Logo
12:54 pm - 12:04 amCVG-STL
12h 10m1 stop
Frontier Logo
5:45 pm - 12:59 amSTL-CVG
6h 14m1 stop
$188Frontier
Find Deal
lun., abr. 28 - dom., may. 4
Delta Logo
5:27 pm - 11:36 pmCVG-STL
7h 09m1 stop
Delta Logo
7:10 am - 11:52 amSTL-CVG
3h 42m1 stop
$233Delta
Find Deal
sáb., may. 3 - mar., may. 6
American Airlines Logo
3:34 pm - 7:23 pmCVG-STL
4h 49m1 stop
American Airlines Logo
5:12 am - 10:16 amSTL-CVG
4h 04m1 stop
$268American Airlines
Find Deal
mié., may. 14 - dom., may. 18
American Airlines Logo
7:18 am - 11:24 amCVG-STL
5h 06m1 stop
American Airlines Logo
7:45 am - 2:01 pmSTL-CVG
5h 16m1 stop
$292American Airlines
Find Deal
dom., abr. 27 - sáb., may. 3
Southwest Logo
5:40 am - 2:10 pmCVG-STL
9h 30m2 stops
Southwest Logo
6:25 am - 1:40 pmSTL-CVG
6h 15m1 stop
$307Southwest
Find Deal
sáb., may. 3 - mar., may. 6
Southwest Logo
5:50 pm - 11:20 pmCVG-STL
6h 30m1 stop
Southwest Logo
1:15 pm - 11:25 pmSTL-CVG
9h 10m2 stops
$322Southwest
Find Deal
jue., jun. 19 - lun., jun. 23
United Airlines Logo
11:18 am - 2:50 pmCVG-STL
4h 32m1 stop
United Airlines Logo
9:40 am - 11:50 pmSTL-CVG
13h 10m2 stops
$417United Airlines
Find Deal
sáb., may. 3 - mar., may. 6
United Airlines Logo
7:30 am - 12:20 pmCVG-STL
5h 50m1 stop
United Airlines Logo
8:00 am - 1:22 pmSTL-CVG
4h 22m1 stop
$447United Airlines
Find Deal
vie., abr. 18 - sáb., abr. 19

Frontier flights from Cincinnati to St. Louis

Our best Frontier deals on Cincinnati to St. Louis flight tickets
Frontier
Apr 28
CVG12:54 pmCincinnati Cinci./N. Kentucky
12h 10m
1 stop
STL12:04 amLambert-St Louis
May 4
STL5:45 pmLambert-St Louis
6h 14m
1 stop
CVG12:59 amCincinnati Cinci./N. Kentucky
Frontier
Apr 15
CVG2:01 pmCincinnati Cinci./N. Kentucky
10h 45m
1 stop
STL11:46 pmLambert-St Louis
Apr 19
STL6:33 pmLambert-St Louis
9h 42m
1 stop
CVG5:15 amCincinnati Cinci./N. Kentucky
Frontier
Apr 28
CVG12:54 pmCincinnati Cinci./N. Kentucky
12h 10m
1 stop
STL12:04 amLambert-St Louis
May 4
STL5:45 pmLambert-St Louis
6h 14m
1 stop
CVG12:59 amCincinnati Cinci./N. Kentucky

Delta flights from Cincinnati to St. Louis

Our best Delta deals on Cincinnati to St. Louis flight tickets
Delta
May 3
CVG5:27 pmCincinnati Cinci./N. Kentucky
7h 09m
1 stop
STL11:36 pmLambert-St Louis
May 6
STL7:10 amLambert-St Louis
3h 42m
1 stop
CVG11:52 amCincinnati Cinci./N. Kentucky
Delta
Apr 7
CVG8:12 pmCincinnati Cinci./N. Kentucky
4h 17m
1 stop
STL11:29 pmLambert-St Louis
Apr 9
STL6:50 amLambert-St Louis
5h 50m
1 stop
CVG1:40 pmCincinnati Cinci./N. Kentucky

See travel insights to St. Louis from

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

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 St. Louis?

In general, July is the cheapest month to fly from Cincinnati to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $296. The month of December is another great option to travel to St. Louis, with average flight prices from Cincinnati averaging around $296.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $296. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $429. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Cincinnati in the evening is the least expensive time of day to depart. momondo users have found prices as low as $308 when looking at flights departing in the evening. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $426 per ticket.

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

As of April 2025, prices for Cincinnati to St. Louis flights are approximately 35% cheaper when compared to flights at the same time last year.

When to book flights from Cincinnati to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Cincinnati to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Cincinnati to St. Louis (CVG to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Cincinnati to St. Louis

Best Price Found

$85

Fastest flight time

4h 32m

Direct flights

None

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Cincinnati in the past 72 hours is $85. The best round-trip flight deal from Cincinnati to St. Louis found on momondo in the last 72 hours is $158.
The fastest flight from Cincinnati to St. Louis takes 4h 32m
There are no direct flights from Cincinnati to St. Louis. Popular non-direct route for this connection is Cincinnati Cinci./N. Kentucky Airport - Lambert-St Louis Airport.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

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

    A flight from Cincinnati Cinci./N. Kentucky to Lambert-St Louis will travel around 307.3 mi. Flights usually cover this in 4h 32m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Cincinnati Cinci./N. Kentucky Airport to Lambert-St Louis Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Cincinnati Cinci./N. Kentucky Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Cincinnati Cinci./N. Kentucky Airport to Lambert-St Louis 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 Cincinnati Cinci./N. Kentucky Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Cincinnati to St. Louis?


Best airlines flying from Cincinnati to St. Louis

Compare and see reviews for airlines that fly from Cincinnati to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $112Free CancellationRating
5.9
3,277 reviews
Search Frontier flights
American AirlinesPriceFrom $175Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $231Free CancellationRating
8.0
7,899 reviews
Search Delta flights
United AirlinesPriceFrom $245Free CancellationRating
7.4
8,615 reviews
Search United Airlines flights
SouthwestPriceFrom $312Free CancellationRating
8.0
4,275 reviews
Search Southwest flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Florissant
Fairview Heights
Maryland Heights
Hermann
Collinsville
Fenton
Farmington
O'Fallon
St. Peters
Wentzville
Alton
Glencoe
Eureka
Festus
Edwardsville
Clayton
Grafton
Litchfield

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Cincinnati to St. Louis for you.

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

Yes. All flights to St. Louis from Cincinnati on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Cincinnati to St. Louis.

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

Of course. momondo tracks the price of Cincinnati to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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