Cheap flights from Kentucky to St. Louis from $82
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Kentucky to St. Louis departing on 5/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Kentucky to St. Louis
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Cheap direct flights
Spirit Airlines flights from Kentucky to St. Louis
Our best Spirit Airlines deals on Kentucky to St. Louis flight tickets
United Airlines flights from Kentucky to St. Louis
Our best United Airlines deals on Kentucky to St. Louis flight tickets
See travel insights to St. Louis from
How to get the cheapest flight ticket from Kentucky 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 day to depart on your flight to St. Louis?
The cheapest day to depart on your flight to St. Louis is on a Saturday when prices can be found for as low as $297. 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 Thursday because tickets tend to average around $475. 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 Kentucky in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $304 when looking at flights departing in the afternoon. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $344 per ticket.
What is the cheapest Kentucky to Lambert-St Louis flight route?
Fly from Louisville Intl to Lambert-St Louis for the best Kentucky - Lambert-St Louis flight prices
What cabin class options are available on Kentucky to Lambert-St Louis flights?
There are 1 cabin classes available to choose from on Kentucky to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
How many flights depart from Kentucky to St. Louis on average per week?
The number of flights available between Kentucky and St. Louis is 23 per week as of May 2025. The most frequent departure day is Mon, with 22% of weekly flights leaving on this day.
How long does it take to fly to St. Louis?
Flight times from Kentucky to St. Louis vary, but if you’re flying out of Lexington and flying into St. Louis (one of the most popular routes), then the duration is 3h 55m on average. Another popular route from Kentucky to St. Louis is flying from Louisville to St. Louis, which will take roughly 3h 56m. Keep in mind that layovers or delays could extend your travel time.
Cheap Kentucky to St. Louis flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Kentucky to St. Louis
When did momondo last update prices for flights from Kentucky to Lambert-St Louis Airport?
Prices for flights from Kentucky to Lambert-St Louis Airport are updated daily.
How many operators does momondo search for flights from Kentucky to Lambert-St Louis Airport?
There are 5 operators available for flights from Kentucky to Lambert-St Louis Airport as of May 2025.
How old do you have to be to fly from Kentucky 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 Kentucky to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
Best airlines flying from Kentucky to St. Louis
Compare and see reviews for airlines that fly from Kentucky to St. Louis with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $226 | Free Cancellation | Rating 8.0 7,934 reviews | |||
| PriceFrom $248 | Free Cancellation | Rating 7.2 10,000 reviews |
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Kentucky to St. Louis?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Kentucky to St. Louis. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Kentucky to St. Louis with flexible booking policies on momondo?
All flight searches from Kentucky to St. Louis on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Kentucky to St. Louis?
Once you have performed a search for Kentucky to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Kentucky to St. Louis right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Kentucky to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.