$227 Cheap Flights from Lexington (LEX) to St. Louis (STL)

View $227 flight on Fri, Jan 9, 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at $227 for one-way flights and $229 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, Nov 20 - Mon, Nov 24
LEX
Lexington
STL
St. Louis
$229 Roundtrip, found 1 day ago
$229
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Nov 20 from Lexington to St. Louis, returning Mon, Nov 24, priced at $229 found 1 day ago
Delta
Sun, Feb 15 - Sat, Feb 21
LEX
Lexington
STL
St. Louis
$229 Roundtrip, found 5 hours ago
$229
Roundtrip
found 5 hours ago
Select Delta flight, departing Sun, Feb 15 from Lexington to St. Louis, returning Sat, Feb 21, priced at $229 found 5 hours ago
United
Thu, Nov 20 - Mon, Nov 24
LEX
Lexington
STL
St. Louis
$229 Roundtrip, found 1 day ago
$229
Roundtrip
found 1 day ago
Select United flight, departing Thu, Nov 20 from Lexington to St. Louis, returning Mon, Nov 24, priced at $229 found 1 day ago
American Airlines
Thu, Nov 13 - Sun, Nov 16
LEX
Lexington
STL
St. Louis
$239 Roundtrip, found 2 days ago
$239
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu, Nov 13 from Lexington to St. Louis, returning Sun, Nov 16, priced at $239 found 2 days ago
United
Tue, Nov 11 - Tue, Nov 18
LEX
Lexington
STL
St. Louis
$244 Roundtrip, found 5 days ago
$244
Roundtrip
found 5 days ago
Select United flight, departing Tue, Nov 11 from Lexington to St. Louis, returning Tue, Nov 18, priced at $244 found 5 days ago
United
Sun, Nov 9 - Sun, Nov 16
LEX
Lexington
STL
St. Louis
$247 Roundtrip, found 4 days ago
$247
Roundtrip
found 4 days ago
Select United flight, departing Sun, Nov 9 from Lexington to St. Louis, returning Sun, Nov 16, priced at $247 found 4 days ago
United
Thu, Nov 13 - Sun, Nov 16
LEX
Lexington
STL
St. Louis
$252 Roundtrip, found 2 days ago
$252
Roundtrip
found 2 days ago
Select United flight, departing Thu, Nov 13 from Lexington to St. Louis, returning Sun, Nov 16, priced at $252 found 2 days ago
Delta
Mon, Dec 15 - Mon, Dec 29
LEX
Lexington
STL
St. Louis
$254 Roundtrip, found 3 days ago
$254
Roundtrip
found 3 days ago
Select Delta flight, departing Mon, Dec 15 from Lexington to St. Louis, returning Mon, Dec 29, priced at $254 found 3 days ago
United
Sun, Nov 9 - Sun, Nov 16
LEX
Lexington
STL
St. Louis
$258 Roundtrip, found 4 days ago
$258
Roundtrip
found 4 days ago
Select United flight, departing Sun, Nov 9 from Lexington to St. Louis, returning Sun, Nov 16, priced at $258 found 4 days ago
Delta
Sat, Nov 15 - Sun, Nov 23
LEX
Lexington
STL
St. Louis
$259 Roundtrip, found 4 days ago
$259
Roundtrip
found 4 days ago
Select Delta flight, departing Sat, Nov 15 from Lexington to St. Louis, returning Sun, Nov 23, priced at $259 found 4 days ago

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

February is typically the cheapest month to fly

From $198 - $634 per traveler.

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 $259
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $259

Frequently asked questions

How much does a flight from Blue Grass Airport (LEX) to Lambert-St. Louis Intl. Airport (STL) cost?
Grab a cheap one-way flight from $227 or cheap return flight from $229 from Blue Grass Airport (LEX) to Lambert-St. Louis Intl. Airport (STL) 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 Blue Grass Airport (LEX) to Lambert-St. Louis Intl. Airport (STL)?
Planning your getaway for November may help you find better deals, as it's the cheapest month for flights between LEX and STL. You'll usually find the lowest fares during off-peak months.
What is the cheapest airline that flies from Blue Grass Airport (LEX) to Lambert-St. Louis Intl. Airport (STL)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from LEX to STL. Then, sort your results by "Price (lowest to highest)" to pick up the best deal available.
How many flights per day from Blue Grass Airport (LEX) to Lambert-St. Louis Intl. Airport (STL)?
You'll have to hop on a flight with a layover when traveling from Blue Grass Airport (LEX) to Lambert-St. Louis Intl. Airport (STL). There are no daily direct flights on this route. However, just filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from LEX to STL?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Blue Grass Airport (LEX) to Lambert-St. Louis Intl. Airport (STL)?
Choose a flight from Blue Grass Airport (LEX) to Lambert-St. Louis Intl. Airport (STL) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures after this hour are on average 22% more likely to be canceled.**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 Blue Grass Airport (LEX) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Waiting until just before your trip to book a flight from LEX to STL often results in higher prices. Although you may find some last-minute deals, there's no guarantee. Keep your travel plans flexible to boost your chances of snagging a bargain.
Is it cheaper to book a LEX to STL flight and hotel package?
Opting for a LEX to STL flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Select from our impressive range of hotels and then add flights, activities and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Blue Grass Airport (LEX) to Lambert-St. Louis Intl. Airport (STL)?
If you reserved your LEX to STL flight in 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 purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more information.

Travel information

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

Book with confidence

Lexington to St. Louis Flights

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

 

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

Sunday is one of the best days to book for cheap flights from Lexington 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 Lexington 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 Lexington to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $227 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 Lexington 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 Lexington 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.

 

Lexington to St. Louis Flights

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*Available to One Key members.