Cheap Flights from Cincinnati Northern Kentucky (CVG) to St Louis (STL)

Compare Cincinnati Northern Kentucky to St Louis flight deals

Find the cheapest month or even day of the year to fly to St Louis

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Flight deals from Cincinnati Northern Kentucky to St Louis

Looking for a cheap last-minute deal or the best return flight from Cincinnati Northern Kentucky to St Louis? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Cincinnati Northern Kentucky to St Louis

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Cincinnati Northern Kentucky to St Louis flights are currently cheapest in April.

Cincinnati Northern Kentucky to St Louis: Alternative routes

Compare routes from Cincinnati Northern Kentucky to St Louis below. You may find an airport to fly into that's cheaper, faster, or easier than St Louis.

Cincinnati to St Louis: Flight information

The things to know before you go.
Cheapest flight found£198
Cheapest month to flyApril

Finding cheap flights from Cincinnati Northern Kentucky to St Louis: Frequently asked questions

The best price we found for a return flight from Cincinnati Northern Kentucky to St Louis is £198. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Cincinnati Northern Kentucky to St Louis. But we found flights with one or more stops from £198.
As of March 2026, there are no flights flying from Cincinnati Northern Kentucky to St Louis.
The cheapest month to fly from Cincinnati Northern Kentucky to St Louis is usually April.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Cincinnati Northern Kentucky Airport to St Louis Airport on Thursday, 9 April 2026.
No airlines currently offer direct flights between Cincinnati Northern Kentucky Airport and St Louis Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to St Louis but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to St Louis is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Frontier Airlines offers the cheapest flight tickets to St Louis.

Flying from Cincinnati/Northern Kentucky Airport (CVG) to Lambert-St. Louis International Airport (STL): what you need to know

  • The timezone in St Louis is UTC-5, which is one hour behind Cincinnati.

  • For a stress-free journey, turn up at the airport two hours ahead of international flights and one hour before domestic departures. This way, you'll have plenty of time to board your CVG to STL flight.

  • Flying during a peak time such as July? School holidays and other popular seasons can mean longer lines at security. Play it safe and arrive up to four hours before an international flight and two hours before domestic departures.

  • We make it a piece of cake to book a flight with a stopover. To see all your options for tickets from Cincinnati/Northern Kentucky Airport to Lambert-St. Louis International Airport, uncheck 'Direct flights only.' Then, choose a flight that has a stop long enough to visit your chosen city. Some great stopovers between CVG and STL include:

    • O'Hare International Airport

    • Detroit Metropolitan Wayne County Airport

    • Chicago Midway International Airport

How to find the cheapest flights from Cincinnati/Northern Kentucky Airport (CVG) to Lambert-St. Louis International Airport (STL)

  • £94 is the lowest price for a one-way Cincinnati/Northern Kentucky Airport to Lambert-St. Louis International Airport flight. Return flights start at £198. These fares may change depending on availability and demand.

  • To get your hands on cheap tickets from CVG to STL, book early. Airlines typically offer lower fares when flights are first released.

  • The 'Whole month' tool shows you the cheapest flights from Cincinnati/Northern Kentucky Airport to Lambert-St. Louis International Airport throughout the month. It's a good way to find a bargain if your dates are flexible.

  • Snapping up cheap flights from CVG to STL is a cinch with Price Alerts. Simply create one of these automatic alerts and we'll let you know as soon as a lower fare pops up.

  • Find the ideal flight for you with the help of the filters. To see the 'Best,' 'Cheapest' or 'Fastest' flights from Cincinnati/Northern Kentucky Airport to Lambert-St. Louis International Airport, use the 'Sort by' function. You can also filter by airline, departure and arrival times, and journey duration.

Handy information about Cincinnati/Northern Kentucky Airport (CVG)

  • 77.0% of flights departing from Cincinnati/Northern Kentucky Airport arrive at their destination on schedule.

  • Central Cincinnati to Cincinnati/Northern Kentucky Airport is approximately 13 miles. Depending on traffic, it'll take you about 20 minutes to get there if you're driving, ride-sharing or catching a cab.

  • You can expect a journey time of about 40 minutes when using public transport.

Arriving at Lambert-St. Louis International Airport (STL)

Getting from Lambert-St. Louis International Airport (STL) to central St Louis

  • You'll find STL at 10701 Lambert International Blvd..

  • From Lambert-St. Louis International Airport, St Louis is approximately 16 miles away. It takes around 20 minutes to reach the centre driving.

  • Getting there on public transport takes roughly 35 minutes.

When to fly to Lambert-St. Louis International Airport (STL)

  • It's time to pick your travel dates for your flight from Cincinnati/Northern Kentucky Airport to Lambert-St. Louis International Airport. July is the most popular month to visit St Louis. If you'd like a more low-key vibe, go in April.

  • Before locking in your flight from Cincinnati/Northern Kentucky Airport to Lambert-St. Louis International Airport, consider the type of weather you like. July is the warmest month in St Louis, with the temperature ranging from 17ºC (63ºF) to 33ºC (91ºF).

  • Search for cheap tickets from CVG to STL in January if you want to travel in cooler conditions. Temperatures are at their lowest around then, ranging between -8ºC (18ºF) and 7ºC (45ºF) on average.

Explore more of United States

  • Chicago is just one of the many cities in United States waiting to be discovered once you've seen St Louis. Around 260 miles away to the north-east, its best attractions include Millennium Park, Art Institute of Chicago and LandShark Beer Garden at Navy Pier.

  • Indianapolis is another standout destination in United States and is around 230 miles east of St Louis. No trip is complete without experiencing The Children's Museum of Indianapolis, Indianapolis Museum of Art and Indianapolis Zoo.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.