$88 Cheap Flights from St. Louis (STL) to Cincinnati (CVG)

View $88 flight on Tue, Sep 2, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Cincinnati-Northern Kentucky Int'l Airport (CVG)

Cheap Flights from St. Louis to Cincinnati (STL-CVG)

Prices were available within the past 7 days and start at $88 for one-way flights and $171 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Sat, Dec 13 - Tue, Dec 16
STL
St. Louis
CVG
Cincinnati
$171 Roundtrip, found 5 days ago
$171
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Sat, Dec 13 from St. Louis to Cincinnati, returning Tue, Dec 16, priced at $171 found 5 days ago
American Airlines
Wed, Sep 3 - Tue, Sep 30
STL
St. Louis
CVG
Cincinnati
$175 Roundtrip, found 2 days ago
$175
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Sep 3 from St. Louis to Cincinnati, returning Tue, Sep 30, priced at $175 found 2 days ago
United
Wed, Sep 3 - Tue, Sep 30
STL
St. Louis
CVG
Cincinnati
$175 Roundtrip, found 2 days ago
$175
Roundtrip
found 2 days ago
Select United flight, departing Wed, Sep 3 from St. Louis to Cincinnati, returning Tue, Sep 30, priced at $175 found 2 days ago
American Airlines
Wed, Oct 8 - Wed, Oct 22
STL
St. Louis
CVG
Cincinnati
$176 Roundtrip, found 3 days ago
$176
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Oct 8 from St. Louis to Cincinnati, returning Wed, Oct 22, priced at $176 found 3 days ago
American Airlines
Wed, Sep 3 - Tue, Sep 30
STL
St. Louis
CVG
Cincinnati
$177 Roundtrip, found 2 days ago
$177
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Sep 3 from St. Louis to Cincinnati, returning Tue, Sep 30, priced at $177 found 2 days ago
Southwest Airlines
Wed, Sep 3 - Tue, Sep 30
STL
St. Louis
CVG
Cincinnati
$180 Roundtrip, found 2 days ago
$180
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Wed, Sep 3 from St. Louis to Cincinnati, returning Tue, Sep 30, priced at $180 found 2 days ago
United
Wed, Oct 8 - Wed, Oct 22
STL
St. Louis
CVG
Cincinnati
$183 Roundtrip, found 3 days ago
$183
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 8 from St. Louis to Cincinnati, returning Wed, Oct 22, priced at $183 found 3 days ago
United
Wed, Oct 8 - Wed, Oct 22
STL
St. Louis
CVG
Cincinnati
$185 Roundtrip, found 3 days ago
$185
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 8 from St. Louis to Cincinnati, returning Wed, Oct 22, priced at $185 found 3 days ago
Frontier Airlines
Wed, Oct 22 - Sat, Oct 25
STL
St. Louis
CVG
Cincinnati
$188 Roundtrip, found 5 days ago
$188
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Wed, Oct 22 from St. Louis to Cincinnati, returning Sat, Oct 25, priced at $188 found 5 days ago
Delta
Wed, Sep 24 - Wed, Oct 1
STL
St. Louis
CVG
Cincinnati
$197 Roundtrip, found 1 hour ago
$197
Roundtrip
found 1 hour ago
Select Delta flight, departing Wed, Sep 24 from St. Louis to Cincinnati, returning Wed, Oct 1, priced at $197 found 1 hour ago

Find the cheapest month to fly from St. Louis (STL) to Cincinnati (CVG)

January is typically the cheapest month to fly

From $120 - $453 per traveler.

Graph displaying average flight prices per month

Alternative airports near Cincinnati

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Cincinnati - Northern Kentucky Intl. CVG. Cheapest option available. Average driving time to city center is 17 minutes. Flights from $292
CVG
Cincinnati - Northern Kentucky Intl.
Cheapest
Average driving time to city center17 min
Flights from $292
Flights from St. Louis (STL) to Cincinnati (CVG)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Cincinnati - Northern Kentucky Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Roundtrip price
$170
Distance
307 mi

St. Louis to Cincinnati Flights

The cheapest times to fly from St. Louis to Cincinnati

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Cincinnati are during the month of December. You can find some of the cheapest flights from St. Louis to Cincinnati with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Cincinnati

Sunday is one of the best days to book for cheap flights from St. Louis to Cincinnati: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Cincinnati

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Cincinnati in 2025. You can also book with separate airlines for your outbound and return journeys, from $88 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Cincinnati flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Cincinnati airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Cincinnati - Northern Kentucky Intl. Airport (CVG) cost?
Secure a cheap one-way flight from $88 or cheap return flight from $171 from Lambert-St. Louis Intl. Airport (STL) to Cincinnati - Northern Kentucky Intl. Airport (CVG) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Cincinnati - Northern Kentucky Intl. Airport (CVG)?
Planning your trip for December can help you save, as it's the cheapest month for flights between STL and CVG. You'll usually find the lowest fares during off-peak months.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Cincinnati - Northern Kentucky Intl. Airport (CVG)?
To find the cheapest airline flying from STL to CVG, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Cincinnati - Northern Kentucky Intl. Airport (CVG)?
You'll have to hop on a flight with a layover if you're traveling from Lambert-St. Louis Intl. Airport (STL) to Cincinnati - Northern Kentucky Intl. Airport (CVG). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from STL to CVG?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Cincinnati - Northern Kentucky Intl. Airport (CVG)?
Opt for a flight from Lambert-St. Louis Intl. Airport (STL) to Cincinnati - Northern Kentucky Intl. Airport (CVG) that leaves before 3 PM to reduce the risk of cancellations and delays. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Cincinnati - Northern Kentucky Intl. Airport (CVG) last-minute?
Waiting until just before your departure to book your flight from STL to CVG often results in higher prices. Although you may find some last-minute offers, they aren't always guaranteed. Allow some flexibility in your schedule for a better chance of landing a bargain.
Is it cheaper to book a STL to CVG flight and hotel package?
You can save money by booking a STL to CVG flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. After selecting your ideal flights and accommodations, consider other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Cincinnati - Northern Kentucky Intl. Airport (CVG)?
If you reserved your STL to CVG flight within the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more information.

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*Available to One Key members.