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Cheap flights from St. Louis to Lexington from $145

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Lexington departing on 4/30. 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
1 adult, Economy, 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.
United Airlines Logo
1:13 pm - 7:09 pm
STL
-
LEX
4h 56m
1 stop
United Airlines Logo
5:45 pm - 9:16 pm
LEX
-
STL
4h 31m
1 stop
$271United Airlines
Wed, Jun 17 - Sat, Jun 20
Delta Logo
11:42 am - 7:10 pm
STL
-
LEX
6h 28m
1 stop
Delta Logo
5:50 pm - 8:44 pm
LEX
-
STL
3h 54m
1 stop
$290Delta
Tue, Apr 28 - Tue, May 5
American Airlines Logo
5:51 am - 10:31 am
STL
-
LEX
3h 40m
1 stop
American Airlines Logo
6:00 am - 12:48 pm
LEX
-
STL
7h 48m
1 stop
$309American Airlines
Thu, Apr 23 - Sun, Apr 26
American Airlines Logo
7:00 am - 12:41 pm
STL
-
LEX
4h 41m
1 stop
American Airlines Logo
6:00 am - 12:48 pm
LEX
-
STL
7h 48m
1 stop
$319American Airlines
Wed, Apr 15 - Sun, Apr 19
American Airlines Logo
5:51 am - 3:34 pm
STL
-
LEX
8h 43m
2 stops
American Airlines Logo
11:28 am - 5:03 pm
LEX
-
STL
6h 35m
1 stop
$321American Airlines
Tue, Apr 28 - Tue, May 5
American Airlines Logo
5:51 am - 10:31 am
STL
-
LEX
3h 40m
1 stop
American Airlines Logo
1:14 pm - 4:41 pm
LEX
-
STL
4h 27m
1 stop
$334American Airlines
Fri, May 15 - Mon, May 18
Delta Logo
5:15 pm - 10:05 pm
STL
-
LEX
3h 50m
1 stop
Delta Logo
8:19 pm - 11:59 pm
LEX
-
STL
4h 40m
1 stop
$338Delta
Fri, May 15 - Sun, May 17
United Airlines Logo
5:28 pm - 11:49 pm
STL
-
LEX
5h 21m
1 stop
United Airlines Logo
7:50 pm - 10:45 pm
LEX
-
STL
3h 55m
1 stop
$341United Airlines
Sat, May 9 - Wed, May 13
United Airlines Logo
6:30 am - 1:18 pm
STL
-
LEX
5h 48m
1 stop
United Airlines Logo
8:50 am - 12:47 pm
LEX
-
STL
4h 57m
1 stop
$360United Airlines
Sat, May 9 - Wed, May 13
United Airlines Logo
7:45 am - 1:18 pm
STL
-
LEX
4h 33m
1 stop
United Airlines Logo
7:50 pm - 12:24 am
LEX
-
STL
5h 34m
1 stop
$370United Airlines
Sat, May 9 - Wed, May 13

American Airlines flights from St. Louis to Lexington

Our best American Airlines deals on St. Louis to Lexington flight tickets
American Airlines
Apr 23
STL5:51 amLambert-St Louis
3h 40m
1 stop
LEX10:31 amLexington Blue Grass
Apr 26
LEX6:00 amLexington Blue Grass
7h 48m
1 stop
STL12:48 pmLambert-St Louis
$309
American Airlines
Apr 15
STL7:00 amLambert-St Louis
4h 41m
1 stop
LEX12:41 pmLexington Blue Grass
Apr 19
LEX6:00 amLexington Blue Grass
7h 48m
1 stop
STL12:48 pmLambert-St Louis
$319
American Airlines
Apr 28
STL5:51 amLambert-St Louis
8h 43m
2 stops
LEX3:34 pmLexington Blue Grass
May 5
LEX11:28 amLexington Blue Grass
6h 35m
1 stop
STL5:03 pmLambert-St Louis
$321

United Airlines flights from St. Louis to Lexington

Our best United Airlines deals on St. Louis to Lexington flight tickets
United Airlines
Jun 17
STL1:13 pmLambert-St Louis
4h 56m
1 stop
LEX7:09 pmLexington Blue Grass
Jun 20
LEX5:45 pmLexington Blue Grass
4h 31m
1 stop
STL9:16 pmLambert-St Louis
$271
United Airlines
May 9
STL5:28 pmLambert-St Louis
5h 21m
1 stop
LEX11:49 pmLexington Blue Grass
May 13
LEX7:50 pmLexington Blue Grass
3h 55m
1 stop
STL10:45 pmLambert-St Louis
$341
United Airlines
May 9
STL6:30 amLambert-St Louis
5h 48m
1 stop
LEX1:18 pmLexington Blue Grass
May 13
LEX8:50 amLexington Blue Grass
4h 57m
1 stop
STL12:47 pmLambert-St Louis
$360

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 April 3, 2026.
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

Cheapest round-trip

St. LouisLexington

STL - LEX

STLLEX

Lambert-St Louis

Wed 6/17

1:13 pm-7:09 pm

1 stop4h 56m

Lexington Blue Grass

Sat 6/20

5:45 pm-9:16 pm

1 stop4h 31m

$271

St. LouisLexington

STL - LEX

STLLEX

Lambert-St Louis

Tue 4/28

11:42 am-7:10 pm

1 stop6h 28m

Lexington Blue Grass

Tue 5/5

5:50 pm-8:44 pm

1 stop3h 54m

$290

St. LouisLexington

STL - LEX

STLLEX

Lambert-St Louis

Thu 4/23

5:51 am-10:31 am

1 stop3h 40m

Lexington Blue Grass

Sun 4/26

6:00 am-12:48 pm

1 stop7h 48m

$309

St. LouisLexington

STL - LEX

STLLEX

Lambert-St Louis

Wed 4/15

7:00 am-12:41 pm

1 stop4h 41m

Lexington Blue Grass

Sun 4/19

6:00 am-12:48 pm

1 stop7h 48m

$319

St. LouisLexington

STL - LEX

STLLEX

Lambert-St Louis

Tue 4/28

5:51 am-3:34 pm

2 stops8h 43m

Lexington Blue Grass

Tue 5/5

11:28 am-5:03 pm

1 stop6h 35m

$321
Quickest round-trip

St. LouisLexington

STL - LEX

STLLEX

Lambert-St Louis

Fri 5/15

5:51 am-10:31 am

1 stop3h 40m

Lexington Blue Grass

Mon 5/18

1:14 pm-4:41 pm

1 stop4h 27m

$334

St. LouisLexington

STL - LEX

STLLEX

Lambert-St Louis

Fri 5/15

5:15 pm-10:05 pm

1 stop3h 50m

Lexington Blue Grass

Sun 5/17

8:19 pm-11:59 pm

1 stop4h 40m

$338

St. LouisLexington

STL - LEX

STLLEX

Lambert-St Louis

Sat 5/9

5:28 pm-11:49 pm

1 stop5h 21m

Lexington Blue Grass

Wed 5/13

7:50 pm-10:45 pm

1 stop3h 55m

$341

St. LouisLexington

STL - LEX

STLLEX

Lambert-St Louis

Sat 5/9

6:30 am-1:18 pm

1 stop5h 48m

Lexington Blue Grass

Wed 5/13

8:50 am-12:47 pm

1 stop4h 57m

$360

St. LouisLexington

STL - LEX

STLLEX

Lambert-St Louis

Sat 5/9

7:45 am-1:18 pm

1 stop4h 33m

Lexington Blue Grass

Wed 5/13

7:50 pm-12:24 am

1 stop5h 34m

$370

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 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 airline that flies from Lambert-St Louis to Lexington Blue Grass?

Delta is the most popular carrier operating from Lambert-St Louis to Lexington Blue Grass

What airlines fly to Lexington?

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Lexington from St. Louis according to our data. American Airlines is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Lexington. Keep in mind that there are 3 different airlines that fly to Lexington on a routine basis, so you have a few additional options to choose from.

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 54m

Direct flights

None
The fastest flight from St. Louis to Lexington takes 3h 54m
There are no direct flights from St. Louis to Lexington. There are no popular flight routes from St. Louis to Lexington.
Search flight deals

Frequently asked questions about flying from St. Louis to Lexington

  • 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 54m 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
DeltaPriceFrom $196Free CancellationRating
7.9
8,374 reviews
Search Delta flights
American AirlinesPriceFrom $253Free CancellationRating
7.1
11,551 reviews
Search American Airlines flights
United AirlinesPriceFrom $279Free CancellationRating
7.4
9,538 reviews
Search United Airlines flights

Traveling to a place near Lexington?

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

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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