£682 Cheap Flights from Cincinnati (CVG) to St. Louis (STL)

View £682 flight on Thu, 18 Jun 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at £682 for one-way flights and £1,208 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Thu, 18 Jun - Thu, 25 Jun
CVG
Cincinnati
STL
St. Louis
£1,208 Return, found 4 days ago
£1,208
Return
found 4 days ago
Select Alaska Airlines flight, departing Thu, 18 Jun from Cincinnati to St. Louis, returning Thu, 25 Jun, priced at £1,208 found 4 days ago

Frequently asked questions

How much does a flight from Cincinnati, OH (CVG-Cincinnati - Northern Kentucky Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) cost?
One-way flights typically cost between $594 and $1,472 and return flights often range between $594 and $1,472. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Anaa (AAA) to Toronto, ON (YYZ-Pearson Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Cincinnati, OH (CVG-Cincinnati - Northern Kentucky Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
August is typically the cheapest month to fly from Cincinnati, OH (CVG-Cincinnati - Northern Kentucky Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.), with average round-trip fares around 649 CAD. This is about 23% lower than the average price throughout the year. August often sees lower prices as it's a shoulder season for many travelers, falling between peak summer and the busy holiday periods. Other cheap months to fly from Cincinnati, OH (CVG-Cincinnati - Northern Kentucky Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) include January and February.*Averages based on flights available on Expedia in the last year.
How do I find cheap flights from Cincinnati, OH (CVG-Cincinnati - Northern Kentucky Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
To find a cheap flight from Cincinnati, OH (CVG-Cincinnati - Northern Kentucky Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Cincinnati, OH (CVG-Cincinnati - Northern Kentucky Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
When looking for the best time to fly from Cincinnati - Northern Kentucky Intl. (CVG) to Lambert-St. Louis Intl. (STL), it's a balance between price and popularity. Based on booking data from the past year, you'll find the cheapest flights in August and January, with average round-trip fares around 649 CAD. While April is the most popular month for this route, offering plenty of flight options, it might not be the cheapest. If you're flexible, aiming for August or January could save you money, while April ensures you have a wide selection of flights.*Prices based on flights available on Expedia in the last year.
How many flights per day from Cincinnati, OH (CVG-Cincinnati - Northern Kentucky Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
There are approximately 52 connecting flights per day from Cincinnati - Northern Kentucky Intl. (CVG) to Lambert-St. Louis Intl. (STL). Some common connection points include O'Hare Intl. (ORD), Hartsfield-Jackson Atlanta Intl. (ATL), and Detroit Metropolitan Wayne County (DTW).
What is the earliest flight from Cincinnati, OH (CVG-Cincinnati - Northern Kentucky Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The earliest flight from Cincinnati - Northern Kentucky Intl. (CVG) to Lambert-St. Louis Intl. (STL) typically departs at approximately 5:00 AM local time, operated by American Airlines. This is a seasonal service active in February, March, and November. An early departure like this can help maximize your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Cincinnati, OH (CVG-Cincinnati - Northern Kentucky Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
You'll typically find the most flights from Cincinnati - Northern Kentucky Intl. (CVG) to Lambert-St. Louis Intl. (STL) on a Friday, with around 46 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include American Airlines, Delta Air Lines, and United Airlines. Flight options on Friday are notably more than other days, offering you a good selection.
What are the most popular departure times for flights from Cincinnati, OH (CVG-Cincinnati - Northern Kentucky Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The most popular departure times for flights from Cincinnati - Northern Kentucky Intl. (CVG) to Lambert-St. Louis Intl. (STL) are in the early morning, from 6am to 9am. About 27% of passengers prefer this time. Many major carriers, including American Airlines, Delta Air Lines and United Airlines, offer flights during this window. This timing works well because it allows you to get an early start on your travel day, arriving at your destination with plenty of time for business or leisure activities.
How long does it take to fly from Cincinnati, OH (CVG-Cincinnati - Northern Kentucky Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Flying from CVG to STL with a connection usually takes about 6 hours 20 minutes, traveling roughly 308 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Cincinnati, OH (CVG-Cincinnati - Northern Kentucky Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Select the "Business class" and "First class" filters when looking for CVG to STL flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Cincinnati, OH (CVG-Cincinnati - Northern Kentucky Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight with Expedia?
It's easy to earn miles on a Cincinnati, OH (CVG-Cincinnati - Northern Kentucky Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for St. Louis from Cincinnati - Northern Kentucky Intl. (CVG)?
From Cincinnati - Northern Kentucky Intl. (CVG), you can fly into Lambert-St. Louis Intl. (STL) to reach St. Louis. Some flights may connect through major hubs like O'Hare Intl. (ORD), Nashville Intl. (BNA), Baltimore Washington Intl. Thurgood Marshall (BWI) before reaching St. Louis. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Cincinnati, OH (CVG-Cincinnati - Northern Kentucky Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) at the last minute?
Typically, booking a last minute flight from Cincinnati, OH (CVG-Cincinnati - Northern Kentucky Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Cincinnati, OH (CVG-Cincinnati - Northern Kentucky Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight and hotel package?
Securing a Cincinnati, OH (CVG-Cincinnati - Northern Kentucky Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Cincinnati, OH (CVG-Cincinnati - Northern Kentucky Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
If you booked your Cincinnati, OH (CVG-Cincinnati - Northern Kentucky Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Cincinnati - Northern Kentucky Intl.
Destination airport
Lambert-St. Louis Intl.
Return price
£1,207
Distance
492 km

Book with confidence

Compare flights from Cincinnati to St. Louis easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Cincinnati to St. Louis. Operating between them flights per day, 3 airlines cover the route. And fly direct, getting you to Lambert-St. Louis Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Cincinnati - Northern Kentucky Intl. to Lambert-St. Louis Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Cincinnati - Northern Kentucky Intl. (CVG) to Lambert-St. Louis Intl. (STL)

The easiest way to view the best deals on flights from Cincinnati to St. Louis today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Cincinnati - Northern Kentucky Intl. to Lambert-St. Louis Intl. start at just £1,208 and range up to £1,208.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Cincinnati and St. Louis
  • booking your flight during June, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Cincinnati to St. Louis flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Cincinnati - Northern Kentucky Intl. to Lambert-St. Louis Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Cincinnati to St. Louis easily and book with confidence

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