$228 Cheap Flights from St. Louis (STL) to Lexington (LEX)

View $228 flight on Fri, Dec 19, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Blue Grass Airport (LEX)

Cheap Flights from St. Louis to Lexington (STL-LEX)

Prices were available within the past 7 days and start at $228 for one-way flights and $229 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, Nov 24 - Wed, Dec 10
STL
St. Louis
LEX
Lexington
$229 Roundtrip, found 1 day ago
$229
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Nov 24 from St. Louis to Lexington, returning Wed, Dec 10, priced at $229 found 1 day ago
Delta
Fri, Dec 19 - Thu, Dec 25
STL
St. Louis
LEX
Lexington
$244 Roundtrip, just found
$244
Roundtrip
just found
Select Delta flight, departing Fri, Dec 19 from St. Louis to Lexington, returning Thu, Dec 25, priced at $244 just found
American Airlines
Mon, Jan 19 - Tue, Feb 3
STL
St. Louis
LEX
Lexington
$252 Roundtrip, found 6 days ago
$252
Roundtrip
found 6 days ago
Select American Airlines flight, departing Mon, Jan 19 from St. Louis to Lexington, returning Tue, Feb 3, priced at $252 found 6 days ago
United
Mon, Jan 19 - Tue, Feb 3
STL
St. Louis
LEX
Lexington
$254 Roundtrip, found 6 days ago
$254
Roundtrip
found 6 days ago
Select United flight, departing Mon, Jan 19 from St. Louis to Lexington, returning Tue, Feb 3, priced at $254 found 6 days ago
United
Tue, Dec 16 - Tue, Jan 6
STL
St. Louis
LEX
Lexington
$256 Roundtrip, found 5 days ago
$256
Roundtrip
found 5 days ago
Select United flight, departing Tue, Dec 16 from St. Louis to Lexington, returning Tue, Jan 6, priced at $256 found 5 days ago
United
Wed, Nov 19 - Sun, Nov 23
STL
St. Louis
LEX
Lexington
$261 Roundtrip, found 1 day ago
$261
Roundtrip
found 1 day ago
Select United flight, departing Wed, Nov 19 from St. Louis to Lexington, returning Sun, Nov 23, priced at $261 found 1 day ago
Delta
Fri, Dec 5 - Wed, Dec 24
STL
St. Louis
LEX
Lexington
$268 Roundtrip, found 5 days ago
$268
Roundtrip
found 5 days ago
Select Delta flight, departing Fri, Dec 5 from St. Louis to Lexington, returning Wed, Dec 24, priced at $268 found 5 days ago
Delta
Sun, Nov 23 - Tue, Dec 2
STL
St. Louis
LEX
Lexington
$274 Roundtrip, found 5 days ago
$274
Roundtrip
found 5 days ago
Select Delta flight, departing Sun, Nov 23 from St. Louis to Lexington, returning Tue, Dec 2, priced at $274 found 5 days ago
United
Tue, Dec 16 - Tue, Jan 6
STL
St. Louis
LEX
Lexington
$274 Roundtrip, found 5 days ago
$274
Roundtrip
found 5 days ago
Select United flight, departing Tue, Dec 16 from St. Louis to Lexington, returning Tue, Jan 6, priced at $274 found 5 days ago
United
Sun, Nov 16 - Sun, Nov 23
STL
St. Louis
LEX
Lexington
$279 Roundtrip, just found
$279
Roundtrip
just found
Select United flight, departing Sun, Nov 16 from St. Louis to Lexington, returning Sun, Nov 23, priced at $279 just found

Find the cheapest month to fly from St. Louis (STL) to Lexington (LEX)

May is typically the cheapest month to fly

From $198 - $634 per traveler.

Alternative airports near Lexington

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

Select flight to Blue Grass LEX. Cheapest and Closest option available. Average driving time to city center is 9 minutes. Flights from $579
LEX
Blue Grass
CheapestClosest
Average driving time to city center9 min
Flights from $579

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Blue Grass Airport (LEX) cost?
Secure a cheap one-way flight from $228 or cheap return flight from $229 from Lambert-St. Louis Intl. Airport (STL) to Blue Grass Airport (LEX) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Blue Grass Airport (LEX)?
The cheapest month to fly from STL to LEX is November, when demand is low. Off-peak months are typically when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Blue Grass Airport (LEX)?
To find the cheapest airline flying from STL to LEX, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Blue Grass Airport (LEX)?
There are no daily direct flights available from Lambert-St. Louis Intl. Airport (STL) to Blue Grass Airport (LEX). But you can book flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be soaring above the clouds in no time.
What day of the week has the most flights from STL to LEX?
Generally you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can change based on the airline, time of year and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Blue Grass Airport (LEX)?
To reach Blue Grass Airport (LEX) on schedule, choose a flight that takes off from Lambert-St. Louis Intl. Airport (STL) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Blue Grass Airport (LEX) last-minute?
Last-minute fares from STL to LEX are usually more expensive. To lock in the cheapest rates, start searching for flights as soon as possible. That being said, if your travel plans are flexible, you may land a cheap ticket right before you leave.
Is it cheaper to book a STL to LEX flight and hotel package?
You can save money by securing a STL to LEX flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. After selecting your ideal accommodations and flights, consider adding extras like car rentals, activities and tours.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Blue Grass Airport (LEX)?
In most instances, you can cancel or modify your STL to LEX flight. However, there may be additional fees, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you want more details, go to our Customer Service portal.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Blue Grass
Airlines serving
American Airlines, Delta, United
Roundtrip price
$228
Distance
316 mi

Book with confidence

St. Louis to Lexington Flights

The cheapest times to fly from St. Louis to Lexington

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

 

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

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

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 St. Louis to Lexington in 2025. You can also book with separate airlines for your outbound and return journeys, from $228 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 St. Louis to Lexington 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 St. Louis to Lexington 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.

 

St. Louis to Lexington Flights

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*Available to One Key members.