Cheap flights from Cincinnati to St. Louis from $86
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 5/20. 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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Frontier flights from Cincinnati to St. Louis
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Delta flights from Cincinnati to St. Louis
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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 33% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Cincinnati Cinci./N. Kentucky to Lambert-St Louis?
Frontier, Delta, and Southwest are the most popular carriers operating from Cincinnati Cinci./N. Kentucky to Lambert-St Louis
What airlines fly to St. Louis?
American Airlines, Delta and United Airlines are the top three most popular airlines that fly to St. Louis from Cincinnati according to our data. American Airlines is the first choice among our users, with 56% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 4 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.
When to book flights from Cincinnati to St. Louis
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
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 58m, 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?
As of April 2025, there are 4 operators available to choose from 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?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Cincinnati to St. Louis is American Airlines (52% of total bookings). The next most popular airlines are Delta (21%), United Airlines (14%), and Southwest (12%).
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 | ||
|---|---|---|---|---|---|
| PriceFrom $231 | Free Cancellation | Rating 8.0 7,927 reviews | |||
| PriceFrom $236 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $245 | Free Cancellation | Rating 7.4 8,694 reviews | |||
| PriceFrom $297 | Free Cancellation | Rating 8.0 4,292 reviews |
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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.