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Cheap flights from St. Louis to Lexington from $249

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Lexington departing on 1/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from St. Louis to Lexington

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
9:59 am - 3:49 pm
STL
-
LEX
4h 50m1 stop
Delta Logo
6:00 am - 11:04 am
LEX
-
STL
6h 04m1 stop
$249Delta
Wed, Jan 21 - Sun, Jan 25
American Airlines Logo
11:05 am - 6:52 pm
STL
-
LEX
6h 47m2 stops
American Airlines Logo
4:58 pm - 9:15 pm
LEX
-
STL
5h 17m1 stop
$254American Airlines
Wed, Jan 21 - Sun, Jan 25
Delta Logo
5:55 pm - 11:07 pm
STL
-
LEX
4h 12m1 stop
Delta Logo
5:37 pm - 8:47 pm
LEX
-
STL
4h 10m1 stop
$259Delta
Wed, Dec 31 - Sun, Jan 4
United Airlines Logo
9:57 am - 4:48 pm
STL
-
LEX
5h 51m1 stop
United Airlines Logo
5:32 pm - 10:58 pm
LEX
-
STL
6h 26m1 stop
$309United Airlines
Thu, Jan 8 - Mon, Jan 12
United Airlines Logo
8:05 am - 1:25 pm
STL
-
LEX
4h 20m1 stop
United Airlines Logo
5:32 pm - 1:41 pm
LEX
-
STL
21h 09m2 stops
$442United Airlines
Sat, Jan 31 - Tue, Feb 3
American Airlines Logo
6:00 am - 5:33 pm
STL
-
LEX
10h 33m2 stops
American Airlines Logo
10:13 pm - 1:25 am
LEX
-
STL
4h 12m1 stop
$455American Airlines
Wed, Dec 31 - Sun, Jan 4
American Airlines Logo
11:05 am - 6:52 pm
STL
-
LEX
6h 47m2 stops
American Airlines Logo
12:49 pm - 9:15 pm
LEX
-
STL
9h 26m2 stops
$477American Airlines
Wed, Jan 21 - Sun, Jan 25
United Airlines Logo
9:57 am - 4:48 pm
STL
-
LEX
5h 51m1 stop
United Airlines Logo
5:32 pm - 1:16 pm
LEX
-
STL
20h 44m2 stops
$479United Airlines
Thu, Jan 8 - Mon, Jan 12
United Airlines Logo
6:30 am - 1:16 pm
STL
-
LEX
5h 46m1 stop
United Airlines Logo
1:57 pm - 5:54 pm
LEX
-
STL
4h 57m1 stop
$489United Airlines
Wed, Dec 31 - Sun, Jan 4
United Airlines Logo
7:00 pm - 11:44 pm
STL
-
LEX
3h 44m1 stop
United Airlines Logo
5:39 pm - 10:59 pm
LEX
-
STL
6h 20m1 stop
$704United Airlines
Sun, Mar 15 - Thu, Mar 19

United Airlines flights from St. Louis to Lexington

Our best United Airlines deals on St. Louis to Lexington flight tickets
United Airlines
Jan 31
STL9:57 amLambert-St Louis
6h 07m
1 stop
LEX5:04 pmLexington Blue Grass
Feb 3
LEX8:35 amLexington Blue Grass
6h 55m
1 stop
STL2:30 pmLambert-St Louis
$309
Find similar
United Airlines
Jan 31
STL8:05 amLambert-St Louis
4h 20m
1 stop
LEX1:25 pmLexington Blue Grass
Feb 3
LEX2:00 pmLexington Blue Grass
24h 41m
2 stops
STL1:41 pmLambert-St Louis
$442
Find similar
United Airlines
Jan 8
STL9:57 amLambert-St Louis
5h 51m
1 stop
LEX4:48 pmLexington Blue Grass
Jan 12
LEX5:32 pmLexington Blue Grass
20h 44m
2 stops
STL1:16 pmLambert-St Louis
$479
Find similar

Delta flights from St. Louis to Lexington

Our best Delta deals on St. Louis to Lexington flight tickets
Delta
Jan 21
STL9:59 amLambert-St Louis
4h 50m
1 stop
LEX3:49 pmLexington Blue Grass
Jan 25
LEX6:00 amLexington Blue Grass
6h 04m
1 stop
STL11:04 amLambert-St Louis
$249
Find similar
Delta
Dec 31
STL5:55 pmLambert-St Louis
4h 12m
1 stop
LEX11:07 pmLexington Blue Grass
Jan 4
LEX5:37 pmLexington Blue Grass
4h 10m
1 stop
STL8:47 pmLambert-St Louis
$259
Find similar
Delta
Dec 19
STL9:30 amLambert-St Louis
5h 58m
1 stop
LEX4:28 pmLexington Blue Grass
Dec 21
LEX5:52 pmLexington Blue Grass
4h 51m
1 stop
STL9:43 pmLambert-St Louis
$319
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Lexington that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from St. Louis to Lexington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisLexington

STL - LEX

STLLEX

Lambert-St Louis

Wed 1/21

9:59 am-3:49 pm

1 stop4h 50m

Lexington Blue Grass

Sun 1/25

6:00 am-11:04 am

1 stop6h 04m

$249

St. LouisLexington

STL - LEX

STLLEX

Lambert-St Louis

Wed 1/21

11:05 am-6:52 pm

2 stops6h 47m

Lexington Blue Grass

Sun 1/25

4:58 pm-9:15 pm

1 stop5h 17m

$254

St. LouisLexington

STL - LEX

STLLEX

Lambert-St Louis

Wed 12/31

5:55 pm-11:07 pm

1 stop4h 12m

Lexington Blue Grass

Sun 1/4

5:37 pm-8:47 pm

1 stop4h 10m

$259

St. LouisLexington

STL - LEX

STLLEX

Lambert-St Louis

Thu 1/8

9:57 am-4:48 pm

1 stop5h 51m

Lexington Blue Grass

Mon 1/12

5:32 pm-10:58 pm

1 stop6h 26m

$309

St. LouisLexington

STL - LEX

STLLEX

Lambert-St Louis

Sat 1/31

8:05 am-1:25 pm

1 stop4h 20m

Lexington Blue Grass

Tue 2/3

5:32 pm-1:41 pm

2 stops21h 09m

$442

St. LouisLexington

STL - LEX

STLLEX

Lambert-St Louis

Wed 12/31

6:00 am-5:33 pm

2 stops10h 33m

Lexington Blue Grass

Sun 1/4

10:13 pm-1:25 am

1 stop4h 12m

$455

St. LouisLexington

STL - LEX

STLLEX

Lambert-St Louis

Wed 1/21

11:05 am-6:52 pm

2 stops6h 47m

Lexington Blue Grass

Sun 1/25

12:49 pm-9:15 pm

2 stops9h 26m

$477

St. LouisLexington

STL - LEX

STLLEX

Lambert-St Louis

Thu 1/8

9:57 am-4:48 pm

1 stop5h 51m

Lexington Blue Grass

Mon 1/12

5:32 pm-1:16 pm

2 stops20h 44m

$479

St. LouisLexington

STL - LEX

STLLEX

Lambert-St Louis

Wed 12/31

6:30 am-1:16 pm

1 stop5h 46m

Lexington Blue Grass

Sun 1/4

1:57 pm-5:54 pm

1 stop4h 57m

$489

St. LouisLexington

STL - LEX

STLLEX

Lambert-St Louis

Sun 3/15

7:00 pm-11:44 pm

1 stop3h 44m

Lexington Blue Grass

Thu 3/19

5:39 pm-10:59 pm

1 stop6h 20m

$704

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Lexington from

How to get the cheapest flight ticket from St. Louis to Lexington

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 Lexington?

On average, the least expensive day to fly to Lexington from St. Louis is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $266. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Thursday is the most expensive day to depart from St. Louis because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $373.

What is the cheapest time of day to depart on your flight to Lexington?

The cheapest time of day to fly to Lexington is in the afternoon when flights can be purchased for as low as $295. Try not to purchase tickets in the morning because they tend to be around $300. Of course, these prices can vary depending on the time of year and what airport you fly to.

When to book flights from St. Louis to Lexington

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Lexington according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Lexington (STL to LEX) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Lexington

Fastest flight time

3h 44m

Direct flights

None
The fastest flight from St. Louis to Lexington takes 3h 44m
There are no direct flights from St. Louis to Lexington. There are no popular flight routes from St. Louis to Lexington.
Search flight deals

  • How far is Lambert-St Louis to Lexington Blue Grass by plane?

    The distance between Lambert-St Louis and Lexington Blue Grass is about 311.1 mi. Typically, this will take 3h 44m by plane in normal conditions.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Lexington Blue Grass Airport?

    Prices for flights from Lambert-St Louis Airport to Lexington Blue Grass Airport were last updated today.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Lexington Blue Grass Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Lexington Blue Grass Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Lexington Blue Grass Airport.

  • What documentation or ID do you need to fly to Lexington Blue Grass Airport?

    The necessary travel and health documents for your Lexington Blue Grass 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 St. Louis to Lexington?

Best airlines flying from St. Louis to Lexington

Compare and see reviews for airlines that fly from St. Louis to Lexington with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $228Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights
DeltaPriceFrom $228Free CancellationRating
7.9
8,005 reviews
Search Delta flights

Traveling to a place near Lexington?

Book flights to Lexington if you plan to visit one of these locations
Richmond
Somerset
Georgetown
Danville
Frankfort
Winchester
Berea
Carlisle
Versailles

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Lexington?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from St. Louis to Lexington. momondo saves you time and could save you money on your trip.

Can I find flights from St. Louis to Lexington with flexible booking policies on momondo?

Flights from St. Louis to Lexington with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from St. Louis to Lexington?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Lexington from St. Louis.

I’m not ready to book a flight from St. Louis to Lexington right now. Can momondo alert me if prices change?

If you are not ready to book a flight from St. Louis to Lexington now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Lexington and let you know when they change.

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