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Cheap flights from Cincinnati to St. Louis from $63

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 2/8. 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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Find the cheapest flights from Cincinnati to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
11:57 am - 10:33 pmCVG-STL
11h 36m1 stop
Frontier Logo
7:43 pm - 1:15 pmSTL-CVG
16h 32m1 stop
$134Frontier
Find Deal
lun., feb. 23 - mié., feb. 25
Frontier Logo
9:05 pm - 7:50 amCVG-STL
11h 45m1 stop
Frontier Logo
5:06 pm - 12:42 amSTL-CVG
6h 36m1 stop
$162Frontier
Find Deal
jue., ene. 8 - lun., ene. 12
Frontier Logo
7:16 pm - 10:02 amCVG-STL
15h 46m1 stop
Frontier Logo
4:27 pm - 5:44 pmSTL-CVG
24h 17m1 stop
$163Frontier
Find Deal
mar., dic. 23 - mar., dic. 30
Frontier Logo
5:05 am - 10:33 pmCVG-STL
18h 28m1 stop
Frontier Logo
7:43 pm - 9:43 amSTL-CVG
13h 00m2 stops
$175Frontier
Find Deal
lun., feb. 23 - mié., feb. 25
Frontier Logo
6:10 am - 10:02 amCVG-STL
28h 52m1 stop
Frontier Logo
9:35 am - 5:44 pmSTL-CVG
7h 09m1 stop
$177Frontier
Find Deal
vie., ene. 9 - dom., ene. 11
Frontier Logo
11:57 am - 10:33 pmCVG-STL
11h 36m1 stop
Frontier Logo
9:54 am - 5:44 pmSTL-CVG
6h 50m1 stop
$183Frontier
Find Deal
mié., dic. 3 - lun., dic. 8
Frontier Logo
8:55 pm - 8:59 amCVG-STL
13h 04m1 stop
Frontier Logo
9:54 am - 7:45 pmSTL-CVG
8h 51m1 stop
$187Frontier
Find Deal
jue., dic. 11 - lun., dic. 15
Frontier Logo
2:27 pm - 10:34 pmCVG-STL
9h 07m1 stop
Frontier Logo
12:12 pm - 10:20 pmSTL-CVG
9h 08m1 stop
$206Frontier
Find Deal
sáb., ene. 17 - sáb., ene. 24
Frontier Logo
11:57 am - 10:33 pmCVG-STL
11h 36m1 stop
Frontier Logo
4:27 pm - 1:06 amSTL-CVG
7h 39m1 stop
$208Frontier
Find Deal
mié., dic. 24 - mié., dic. 31
Frontier Logo
11:57 am - 10:33 pmCVG-STL
11h 36m1 stop
Frontier Logo
8:32 pm - 5:48 pmSTL-CVG
20h 16m2 stops
$209Frontier
Find Deal
lun., ene. 12 - mié., ene. 14

American Airlines flights from Cincinnati to St. Louis

Our best American Airlines deals on Cincinnati to St. Louis flight tickets
American Airlines
Jan 17
CVG1:09 pmCincinnati Cinci./N. Kentucky
6h 25m
1 stop
STL6:34 pmLambert-St Louis
Jan 24
STL1:40 pmLambert-St Louis
9h 05m
2 stops
CVG11:45 pmCincinnati Cinci./N. Kentucky
$240
Find similar
American Airlines
Jan 17
CVG1:09 pmCincinnati Cinci./N. Kentucky
6h 25m
1 stop
STL6:34 pmLambert-St Louis
Jan 24
STL1:40 pmLambert-St Louis
9h 05m
2 stops
CVG11:45 pmCincinnati Cinci./N. Kentucky
$262
Find similar
American Airlines
Dec 23
CVG7:03 pmCincinnati Cinci./N. Kentucky
5h 49m
1 stop
STL11:52 pmLambert-St Louis
Dec 30
STL5:00 amLambert-St Louis
4h 04m
1 stop
CVG10:04 amCincinnati Cinci./N. Kentucky
$342
Find similar

Delta flights from Cincinnati to St. Louis

Our best Delta deals on Cincinnati to St. Louis flight tickets
Delta
Feb 14
CVG2:06 pmCincinnati Cinci./N. Kentucky
3h 36m
1 stop
STL4:42 pmLambert-St Louis
Feb 20
STL6:47 pmLambert-St Louis
4h 09m
1 stop
CVG11:56 pmCincinnati Cinci./N. Kentucky
$246
Find similar
Delta
Dec 25
CVG2:51 pmCincinnati Cinci./N. Kentucky
6h 50m
1 stop
STL8:41 pmLambert-St Louis
Jan 1
STL6:29 amLambert-St Louis
4h 04m
1 stop
CVG11:33 amCincinnati Cinci./N. Kentucky
$257
Find similar
Delta
Dec 2
CVG12:13 pmCincinnati Cinci./N. Kentucky
4h 53m
1 stop
STL4:06 pmLambert-St Louis
Dec 3
STL9:30 amLambert-St Louis
3h 45m
1 stop
CVG2:15 pmCincinnati Cinci./N. Kentucky
$557
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Cincinnati to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated noviembre 26, 2025.
Use the filters below to find and compare flights from Cincinnati to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

lun. 2/23

11:57 am-10:33 pm

1 stop11h 36m

Lambert-St Louis

mié. 2/25

7:43 pm-1:15 pm

1 stop16h 32m

$134

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

jue. 1/8

9:05 pm-7:50 am

1 stop11h 45m

Lambert-St Louis

lun. 1/12

5:06 pm-12:42 am

1 stop6h 36m

$162

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

mar. 12/23

7:16 pm-10:02 am

1 stop15h 46m

Lambert-St Louis

mar. 12/30

4:27 pm-5:44 pm

1 stop24h 17m

$163

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

lun. 2/23

5:05 am-10:33 pm

1 stop18h 28m

Lambert-St Louis

mié. 2/25

7:43 pm-9:43 am

2 stops13h 00m

$175

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

vie. 1/9

6:10 am-10:02 am

1 stop28h 52m

Lambert-St Louis

dom. 1/11

9:35 am-5:44 pm

1 stop7h 09m

$177

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

mié. 12/3

11:57 am-10:33 pm

1 stop11h 36m

Lambert-St Louis

lun. 12/8

9:54 am-5:44 pm

1 stop6h 50m

$183

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

jue. 12/11

8:55 pm-8:59 am

1 stop13h 04m

Lambert-St Louis

lun. 12/15

9:54 am-7:45 pm

1 stop8h 51m

$187

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

sáb. 1/17

2:27 pm-10:34 pm

1 stop9h 07m

Lambert-St Louis

sáb. 1/24

12:12 pm-10:20 pm

1 stop9h 08m

$206

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

mié. 12/24

11:57 am-10:33 pm

1 stop11h 36m

Lambert-St Louis

mié. 12/31

4:27 pm-1:06 am

1 stop7h 39m

$208

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

lun. 1/12

11:57 am-10:33 pm

1 stop11h 36m

Lambert-St Louis

mié. 1/14

8:32 pm-5:48 pm

2 stops20h 16m

$209

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 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, August 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 $236. The month of January is another great option to travel to St. Louis, with average flight prices from Cincinnati averaging around $300.

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 November 2025, prices for Cincinnati to St. Louis flights are approximately 68% more expensive 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

Fastest flight time

3h 58m

Direct flights

None
The fastest flight from Cincinnati to St. Louis takes 3h 58m
There are no direct flights from Cincinnati to St. Louis. There are no popular flight routes from Cincinnati to St. Louis.
Search flight deals

  • 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 3h 36m, 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 $85Free CancellationRating
5.8
3,099 reviews
Search Frontier flights
American AirlinesPriceFrom $218Free CancellationRating
7.2
11,038 reviews
Search American Airlines flights
DeltaPriceFrom $236Free CancellationRating
7.9
7,999 reviews
Search Delta flights
SouthwestPriceFrom $254Free CancellationRating
8.0
4,254 reviews
Search Southwest flights
United AirlinesPriceFrom $262Free CancellationRating
7.4
9,046 reviews
Search United Airlines 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
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
Wentzville
Fenton
Collinsville
St. Peters
Alton
Farmington
Festus
Glencoe
Edwardsville
Clayton
Eureka
Litchfield
Shrewsbury

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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