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$105 Cheap Flights from Cincinnati (CVG) to St. Louis (STL)

View $105 flight on Sat, Oct 24, 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at $105 for one-way flights and $200 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Sep 10 - Mon, Sep 14
CVG
Cincinnati
STL
St. Louis
$200 Roundtrip, found 1 day ago
$200
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, Sep 10 from Cincinnati to St. Louis, returning Mon, Sep 14, priced at $200 found 1 day ago
Frontier Airlines
Thu, Sep 24 - Mon, Sep 28
CVG
Cincinnati
STL
St. Louis
$210 Roundtrip, found 1 day ago
$210
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, Sep 24 from Cincinnati to St. Louis, returning Mon, Sep 28, priced at $210 found 1 day ago
Frontier Airlines
Fri, Sep 25 - Mon, Sep 28
CVG
Cincinnati
STL
St. Louis
$213 Roundtrip, found 3 days ago
$213
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Fri, Sep 25 from Cincinnati to St. Louis, returning Mon, Sep 28, priced at $213 found 3 days ago
Frontier Airlines
Sat, Aug 29 - Mon, Aug 31
CVG
Cincinnati
STL
St. Louis
$220 Roundtrip, found 1 day ago
$220
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sat, Aug 29 from Cincinnati to St. Louis, returning Mon, Aug 31, priced at $220 found 1 day ago
Frontier Airlines
Thu, Aug 27 - Mon, Aug 31
CVG
Cincinnati
STL
St. Louis
$223 Roundtrip, found 2 days ago
$223
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Thu, Aug 27 from Cincinnati to St. Louis, returning Mon, Aug 31, priced at $223 found 2 days ago
Frontier Airlines
Thu, Oct 22 - Sun, Oct 25
CVG
Cincinnati
STL
St. Louis
$226 Roundtrip, found 1 day ago
$226
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, Oct 22 from Cincinnati to St. Louis, returning Sun, Oct 25, priced at $226 found 1 day ago
Southwest Airlines
Thu, Aug 27 - Mon, Aug 31
CVG
Cincinnati
STL
St. Louis
$255 Roundtrip, found 2 days ago
$255
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Thu, Aug 27 from Cincinnati to St. Louis, returning Mon, Aug 31, priced at $255 found 2 days ago
American Airlines
Fri, Sep 11 - Sun, Sep 13
CVG
Cincinnati
STL
St. Louis
$259 Roundtrip, found 2 days ago
$259
Roundtrip
found 2 days ago
Select American Airlines flight, departing Fri, Sep 11 from Cincinnati to St. Louis, returning Sun, Sep 13, priced at $259 found 2 days ago
Delta
Wed, Sep 2 - Sun, Sep 6
CVG
Cincinnati
STL
St. Louis
$277 Roundtrip, found 1 day ago
$277
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Sep 2 from Cincinnati to St. Louis, returning Sun, Sep 6, priced at $277 found 1 day ago
United
Fri, Sep 11 - Sat, Sep 12
CVG
Cincinnati
STL
St. Louis
$289 Roundtrip, found 1 day ago
$289
Roundtrip
found 1 day ago
Select United flight, departing Fri, Sep 11 from Cincinnati to St. Louis, returning Sat, Sep 12, priced at $289 found 1 day ago

Alternative airports near St. Louis

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

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $300
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $300

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

February is typically the cheapest month to fly

From $145 - $473 per traveler.

What you need to know for your flight from Cincinnati - Northern Kentucky Intl. to Lambert-St. Louis Intl.

Cincinnati (CVG) to St. Louis (STL) at a glance

Travel between Cincinnati (CVG) and St. Louis (STL) with a selection of airlines catering to this domestic short-haul route. You can find flights from Cincinnati with options ranging from full-service to budget carriers, allowing you to select an itinerary that aligns with your travel preferences and budget. As you prepare to explore the iconic attractions and neighborhoods of St. Louis, be sure to check out the key details for flights departing from Cincinnati - Northern Kentucky International Airport (CVG) to Lambert-St. Louis International Airport (STL).

  • Fastest flight duration: around 3 hours in-flight, plus roughly 1h 15m layover with one stop
  • Route distance: roughly 300 miles (485 km)
  • Flights per week: around 9 departures on average
  • Typical fares (one-way): economy tickets often range from $95–$365, depending on seasonality and how far ahead you book

Flights from Cincinnati - Northern Kentucky International Airport (CVG) to Lambert-St. Louis International Airport (STL)

Based on the latest traveler bookings, here are the top airlines favored for flights from Cincinnati to St. Louis, particularly for their one-stop services. Common layover options include O'Hare International Airport (ORD) with about a 1h 15m layover, Hartsfield-Jackson Atlanta International Airport (ATL) also featuring a 1h 15m layover, and Midway International Airport (MDW), which has a similar layover time. These choices allow you to tailor your trip by balancing price, total travel time, and cabin class for the ideal itinerary.

  • American Airlines: This full-service airline provides one-stop flights, with one-way fares generally falling between $105 and $370. It represents about 38% of departures for this route, featuring an in-flight duration of 3 hours and a total travel time of approximately 4 hours and 30 minutes, including layovers.
  • United: As another full-service airline, United offers one-stop travel with one-way ticket prices typically ranging from $130 to $365. It constitutes around 26% of departures on this route, with a flight time of 3 hours and a total journey time of about 4 hours and 30 minutes, factoring in layovers.
  • Delta: This full-service carrier also provides one-stop service, with one-way fares usually between $110 and $365. Delta accounts for roughly 19% of departures on the route, having an in-flight duration of 3 hours and a total travel time of nearly 4 hours and 30 minutes, including layover time.
  • Southwest Airlines: Known as a low-cost option, Southwest offers one-stop service with one-way fares typically priced from $125 to $360. It makes up about 14% of departures on this route, featuring an in-flight time of 3 hours and a total journey time of around 4 hours and 30 minutes, including layovers.
  • Frontier Airlines: This low-cost carrier provides one-stop flights with one-way fares generally ranging from $95 to $160. Frontier accounts for approximately 3% of departures on this route, with an in-flight duration of 3 hours and a total travel time of roughly 4 hours and 30 minutes, including layovers.

Best time to fly from Cincinnati (CVG) to St. Louis (STL)

The most popular months for travelers flying from Cincinnati to St. Louis are January, March, and April, when peak temperatures in St. Louis reach up to 56.1°F in April. If you prefer quieter travel, consider December, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 37.8°F. For better deals, January usually offers the lowest average one-way fare around $189. Flight availability peaks in March, September, October, and December, with approximately 10 flights per week, making it easier to find convenient departure times. February has the fewest flights, with approximately 7 flights per week.

  • Cheapest time to fly: January usually offers good deals with average one-way fare around $189, roughly 16% cheaper than the yearly average.
  • Another budget-friendly time to fly: August typically offers an average one-way fare of around $210.
  • Most flight options: March, September, October, and December have the highest number of flights from Cincinnati to St. Louis, with approximately 10 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January31.6°F (-0.2°C)Moderately High8$189
February34.9°F (1.6°C)Moderately Low7$232
March46.4°F (8.0°C)Moderately High10$261
April56.1°F (13.4°C)Moderately High8$226
May66.6°F (19.2°C)Average8$230
June76.1°F (24.5°C)Average9$245
July78.6°F (25.9°C)Moderately Low8$224
August77.0°F (25.0°C)Average9$210
September70.9°F (21.6°C)Average10$229
October58.6°F (14.8°C)Average10$212
November46.2°F (7.9°C)Average8$224
December37.8°F (3.2°C)Moderately Low10$222

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative routes from Cincinnati (CVG) to St. Louis (STL)

  • Cincinnati to St. Louis (LUK-STL): Located approximately 13 miles from Cincinnati - Northern Kentucky International Airport (CVG), Cincinnati Municipal - Lunken Field Airport (LUK) serves as an alternative departure point.
  • Cincinnati to St. Louis (CVG-SUS): Spirit of St. Louis Airport (SUS) is roughly 16 miles distant from Lambert-St. Louis International Airport (STL), offering another route for travelers.
  • Cincinnati to St. Louis (CVG-CPS): St. Louis Downtown Airport (CPS) lies about 16 miles from Lambert-St. Louis International Airport (STL), providing an additional option for flights.

How to find the best prices for flights from Cincinnati (CVG) to St. Louis (STL)

Getting some of the best deals on flights from Cincinnati to St. Louis is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually available when booking at least two months in advance, although most travelers tend to book between two to eight weeks ahead. Afternoon departures from 12 PM to 6 PM often offer lower prices, while morning flights from 5 AM to 12 PM are the most popular. Additionally, flying on Saturday generally results in cheaper fares, even though Friday is the most sought-after travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Lambert-St. Louis International Airport from Cincinnati - Northern Kentucky International Airport

St. Louis welcomes travelers from Cincinnati with a range of transport options based on price, convenience, and proximity. For departures, Cincinnati - Northern Kentucky International Airport is roughly a 20-minute drive (covering about 13 miles) from central Cincinnati. Here's how to reach St. Louis efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in St. Louis, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Lambert-St. Louis International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Lambert-St. Louis International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Lambert-St. Louis International Airport, Lambert Main Terminal Station, a metro station, is conveniently located just 0.1 miles away on foot, providing easy access to public transportation options.

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?
You can find cheap one-way flights from $105 and cheap return flights from $200 Cincinnati, OH (CVG-Cincinnati - Northern Kentucky Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) with Expedia. One-way flights generally range between $158 and $511, and roundtrip flights usually range from $296 to $1018. 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 Cincinnati, OH (CVG-Cincinnati - Northern Kentucky Intl.) to St. Louis, MO (STL-Lambert-St. Louis 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 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 $267. This price is about 23% lower than the average throughout the year, likely due to reduced travel demand during the late summer. Other budget-friendly months include January and February.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Cincinnati, OH (CVG-Cincinnati - Northern Kentucky Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Enter CVG to STL and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Cincinnati, OH (CVG-Cincinnati - Northern Kentucky Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Frontier Airlines is one of the cheapest airlines offering connecting flights from Cincinnati - Northern Kentucky Intl. (CVG) to Lambert-St. Louis Intl. (STL), with round-trip tickets starting from around $143 with a layover in Tampa Intl. (TPA). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices 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.)?
For flights from Cincinnati, OH (CVG) to St. Louis, MO (STL), the best months to fly are August and January. Average return flight prices are around $267, making these months budget-friendly. August is especially favorable as it typically sees lower demand, allowing for a more comfortable travel experience.*Prices based on flights available on Expedia in the last year.
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 (CVG) to St. Louis (STL) typically departs at around 5:00 AM, operated by American Airlines. This seasonal service is available in February, March, and November, making it a great option for early travelers. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
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 (CVG) to St. Louis (STL) are in the early morning, from 6am to 9am. About 29% of passengers prefer this time window. Many major carriers, including American Airlines, Delta and United, offer flights during this window. This timing works well because it allows you to start your day early and arrive in St. Louis with plenty of time to explore.
How long does it take to fly from Cincinnati, OH (CVG-Cincinnati - Northern Kentucky Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Flights from CVG to STL with one stop typically take around 6 hours, covering approximately 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.)?
First class seats are offered on the CVG to STL route. First class cabins are available on:

  • American Airlines
  • Delta Air Lines
  • United Airlines

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)?
If you're planning to travel to St. Louis from Cincinnati - Northern Kentucky Intl. (CVG), you can fly into Lambert-St. Louis Intl. (STL) Some flights may connect through major hubs like O'Hare Intl. (ORD), Baltimore Washington Intl. Thurgood Marshall (BWI), Nashville Intl. (BNA) 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.) St Louis Vacation Packages 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.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Roundtrip price
$200
Distance
307 mi

Book with confidence

Cincinnati to St. Louis Flights

The cheapest times to fly from Cincinnati to St. Louis

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 Cincinnati to St. Louis are during the month of September. You can find some of the cheapest flights from Cincinnati to St. Louis with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Cincinnati to St. Louis: 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 Cincinnati to St. Louis

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 Cincinnati to St. Louis in 2026. You can also book with separate airlines for your outbound and return journeys, from $105 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 Cincinnati to St. Louis 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 Cincinnati to St. Louis 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.

 

Cincinnati to St. Louis Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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