$192+ Cheap flights from Kentucky to St. Louis (STL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/24. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — STL
Nov 25 — Dec 21
Round-trip
1 adult, Economy
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Find cheap flights from Kentucky to St. Louis with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Kentucky to St. Louis
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Cheapest flights from Kentucky to St. LouisExplore the most affordable flight options available from Kentucky to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 26, 2026.
Explore the most affordable flight options available from Kentucky to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 26, 2026.
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/115:40 pm -
1 stop3h 49m
Tue 11/1710:20 am -
1 stop5h 57m
Deal found 10/23![Delta logo]()
$251
This Southwest deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1212:05 pm -
2 stops8h 05m
Mon 11/162:25 pm -
1 stop5h 10m
Deal found 10/23![Southwest logo]()
$256
This Southwest deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/107:35 pm -
1 stop3h 25m
Thu 12/174:30 pm -
1 stop4h 45m
Deal found 10/26![Southwest logo]()
$275
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/207:55 pm -
1 stop5h 01m
Fri 11/276:40 am -
1 stop6h 25m
Deal found 10/21![Delta logo]()
$319
This American Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/218:10 pm -
1 stop4h 48m
Sat 11/285:50 am -
1 stop4h 00m
Deal found 10/24![American Airlines logo]()
$329
This American Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:54 pm -
1 stop6h 05m
Sat 11/141:20 pm -
1 stop4h 04m
Deal found 10/23![American Airlines logo]()
$334
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/55:25 am -
1 stop4h 30m
Mon 11/95:00 am -
1 stop4h 13m
Deal found 10/21![United Airlines logo]()
$349
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/205:10 am -
1 stop4h 45m
Sun 11/229:40 am -
1 stop6h 22m
Deal found 10/24![United Airlines logo]()
$362
This Southwest deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/218:20 pm -
1 stop3h 30m
Sat 11/285:30 am -
1 stop3h 45m
Deal found 10/24![Southwest logo]()
$408
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/307:10 am -
1 stop4h 22m
Sat 10/316:50 pm -
1 stop4h 04m
Deal found 10/25![United Airlines logo]()
$409
This Southwest deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/53:45 pm -
1 stop5h 15m
Mon 11/95:10 pm -
1 stop6h 15m
Deal found 10/21![Southwest logo]()
$410
This American Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/309:17 am -
1 stop7h 34m
Sat 10/315:00 am -
2 stops8h 57m
Deal found 10/25![American Airlines logo]()
$414
Best flights from Kentucky to St. LouisDiscover carefully curated flight deals from Kentucky to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 26, 2026.
Discover carefully curated flight deals from Kentucky to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 26, 2026.
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/115:40 pm -
1 stop3h 49m
Tue 11/1710:20 am -
1 stop5h 57m
Deal found 10/23![Delta logo]()
$251
This Southwest deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/102:05 pm -
1 stop4h 05m
Thu 12/174:40 pm -
2 stops6h 45m
Deal found 10/26![Southwest logo]()
$280
This American Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/58:59 am -
1 stop5h 31m
Tue 2/911:04 am -
2 stops6h 43m
Deal found 10/23![American Airlines logo]()
$324
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/38:50 am -
1 stop4h 23m
Thu 2/410:45 am -
1 stop6h 44m
Deal found 10/21![United Airlines logo]()
$341
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/711:05 am -
1 stop5h 38m
Wed 11/111:08 pm -
1 stop6h 27m
Deal found 10/23![United Airlines logo]()
$349
This Southwest deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/218:20 pm -
1 stop3h 30m
Sat 11/285:30 am -
1 stop3h 45m
Deal found 10/24![Southwest logo]()
$408
This American Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/76:11 pm -
1 stop6h 48m
Wed 11/115:01 am -
1 stop6h 42m
Deal found 10/23![American Airlines logo]()
$410
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/610:50 am -
1 stop4h 38m
Tue 2/95:00 am -
1 stop7h 15m
Deal found 10/21![United Airlines logo]()
$409
This Southwest deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/53:45 pm -
1 stop5h 15m
Mon 11/95:10 pm -
1 stop6h 15m
Deal found 10/21![Southwest logo]()
$410
This Southwest deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/66:10 pm -
1 stop7h 00m
Tue 11/1012:35 pm -
1 stop8h 20m
Deal found 10/22![Southwest logo]()
$410
This American Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/85:14 am -
1 stop6h 39m
Thu 11/125:29 pm -
1 stop5h 19m
Deal found 10/24![American Airlines logo]()
$665
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/89:00 am -
1 stop4h 10m
Thu 11/128:00 am -
2 stops11h 35m
Deal found 10/24![United Airlines logo]()
$963
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/215:25 am -
2 stops14h 13m
Sat 11/285:00 am -
1 stop4h 13m
Deal found 10/24![United Airlines logo]()
$1,022
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/55:25 am -
1 stop6h 07m
Mon 11/91:00 pm -
2 stops9h 54m
Deal found 10/21![United Airlines logo]()
$1,178
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/205:25 am -
1 stop6h 07m
Mon 11/231:00 pm -
2 stops9h 54m
Deal found 10/22![United Airlines logo]()
$1,238
Last-minute flights from Kentucky to St. LouisDiscover last-minute flight deals from Kentucky to St. Louis. Data last updated October 26, 2026 and is based on user searches.
Discover last-minute flight deals from Kentucky to St. Louis. Data last updated October 26, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/307:10 am -
1 stop4h 22m
Sat 10/316:50 pm -
1 stop4h 04m
Deal found 10/25![United Airlines logo]()
$409
This American Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/309:17 am -
1 stop7h 34m
Sat 10/315:00 am -
2 stops8h 57m
Deal found 10/25![American Airlines logo]()
$414
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/55:25 am -
1 stop4h 30m
Mon 11/95:00 am -
1 stop4h 13m
Deal found 10/21![United Airlines logo]()
$349
This Southwest deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/53:45 pm -
1 stop5h 15m
Mon 11/95:10 pm -
1 stop6h 15m
Deal found 10/21![Southwest logo]()
$410
This Southwest deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/612:05 pm -
2 stops8h 05m
Tue 11/1010:30 am -
2 stops9h 05m
Deal found 10/22![Southwest logo]()
$420
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/115:40 pm -
1 stop3h 49m
Tue 11/1710:20 am -
1 stop5h 57m
Deal found 10/23![Delta logo]()
$251
This Southwest deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1212:05 pm -
2 stops8h 05m
Mon 11/162:25 pm -
1 stop5h 10m
Deal found 10/23![Southwest logo]()
$256
This American Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:54 pm -
1 stop6h 05m
Sat 11/141:20 pm -
1 stop4h 04m
Deal found 10/23![American Airlines logo]()
$334
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/207:55 pm -
1 stop5h 01m
Fri 11/276:40 am -
1 stop6h 25m
Deal found 10/21![Delta logo]()
$319
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/205:10 am -
1 stop4h 45m
Sun 11/229:40 am -
1 stop6h 22m
Deal found 10/24![United Airlines logo]()
$362
This American Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/218:10 pm -
1 stop4h 48m
Sat 11/285:50 am -
1 stop4h 00m
Deal found 10/24![American Airlines logo]()
$329
This Southwest deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/218:20 pm -
1 stop3h 30m
Sat 11/285:30 am -
1 stop3h 45m
Deal found 10/24![Southwest logo]()
$408
One-way flights from Kentucky to St. LouisSearch for one-way flight options from Kentucky to St. Louis. Find affordable one-way fares based on user searches. Data last updated October 26, 2026.
Search for one-way flight options from Kentucky to St. Louis. Find affordable one-way fares based on user searches. Data last updated October 26, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/247:10 pm -
2 stops23h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Multiple Airlines logo]()
$192
This American Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/156:54 pm -
1 stop6h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![American Airlines logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/159:19 pm -
2 stops21h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Multiple Airlines logo]()
$302
This Kiwi.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/238:03 pm -
3 stops52h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Multiple Airlines logo]()
$304
This Kiwi.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1310:46 am -
3 stops33h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Multiple Airlines logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2511:28 am -
3 stops37h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Multiple Airlines logo]()
$375
This American Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/316:58 pm -
1 stop6h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![American Airlines logo]()
$384
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/256:15 pm -
2 stops19h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![United Airlines logo]()
$452
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:10 am -
2 stops15h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![United Airlines logo]()
$508
Find flight deals from Kentucky to St. Louis
Keep the following information in mind while searching for Kentucky to St. Louis flight deals. Data was last updated October 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $251 (Delta) |
One-way from | $192 (Kiwi.com) |
Cheapflights Fare Finder
Customize your flight search to find flights from Kentucky to St. Louis 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, Cheapflights users made 7,457,451 searches. Data last updated October 26, 2026.
Use the filters below to find and compare flights from Kentucky to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
LexingtonSt. Louis
LEX Lexington Blue Grass - STL Lambert-St Louis
LEXSTL
Lexington Blue Grass
Tue 11/24
7:10 pm-5:40 pm
2 stops23h 30m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$192
LouisvilleSt. Louis
SDF Louisville Intl - STL Lambert-St Louis
SDFSTL
Louisville Intl
Wed 11/11
5:40 pm-8:29 pm
1 stop3h 49m
Lambert-St Louis
Tue 11/17
10:20 am-5:17 pm
1 stop5h 57m
$251
Quickest round-trip
LexingtonSt. Louis
LEX Lexington Blue Grass - STL Lambert-St Louis
LEXSTL
Lexington Blue Grass
Sun 11/15
6:54 pm-11:55 pm
1 stop6h 01m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$274
LouisvilleSt. Louis
SDF Louisville Intl - STL Lambert-St Louis
SDFSTL
Louisville Intl
Thu 12/10
2:05 pm-5:10 pm
1 stop4h 05m
Lambert-St Louis
Thu 12/17
4:40 pm-12:25 am
2 stops6h 45m
$280
LexingtonSt. Louis
LEX Lexington Blue Grass - STL Lambert-St Louis
LEXSTL
Lexington Blue Grass
Sun 11/15
9:19 pm-5:42 pm
2 stops21h 23m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$302
LexingtonSt. Louis
LEX Lexington Blue Grass - STL Lambert-St Louis
LEXSTL
Lexington Blue Grass
Mon 11/23
8:03 pm-11:59 pm
3 stops52h 56m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$304
LexingtonSt. Louis
LEX Lexington Blue Grass - STL Lambert-St Louis
LEXSTL
Lexington Blue Grass
Fri 2/5
8:59 am-1:30 pm
1 stop5h 31m
Lambert-St Louis
Tue 2/9
11:04 am-6:47 pm
2 stops6h 43m
$324
LouisvilleSt. Louis
SDF Louisville Intl - STL Lambert-St Louis
SDFSTL
Louisville Intl
Wed 2/3
8:50 am-12:13 pm
1 stop4h 23m
Lambert-St Louis
Thu 2/4
10:45 am-6:29 pm
1 stop6h 44m
$341
LexingtonSt. Louis
LEX Lexington Blue Grass - STL Lambert-St Louis
LEXSTL
Lexington Blue Grass
Sat 11/7
11:05 am-3:43 pm
1 stop5h 38m
Lambert-St Louis
Wed 11/11
1:08 pm-8:35 pm
1 stop6h 27m
$349
LexingtonSt. Louis
LEX Lexington Blue Grass - STL Lambert-St Louis
LEXSTL
Lexington Blue Grass
Sat 10/31
6:58 pm-12:19 am
1 stop6h 21m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$384
Showing 1-10 of 23 resultsSorted by cheapest first
Best time to book a flight from Kentucky to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Kentucky with our price prediction graph.
SDF-STL
LEX-STL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Kentucky to St. Louis
USKY-STL
SDF-STL
LEX-STL
No data available for this route at this time. Please check back soon.
Related info for your journey
Find useful and relevant information for your journey from Kentucky to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsFairview Heights
O'Fallon
Fenton
Swansea
Eureka
Wentzville
Maryland Heights
Chesterfield
Collinsville
Edwardsville
Glencoe
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Alternative routes for Kentucky to St. Louis
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Complete your trip
Complete your trip to St. Louis by adding a car rental and/or hotel reservation to your travel itinerary.
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Kentucky and St. Louis flights
Browse other Kentucky and St. Louis flight options. Last updated on October 26, 2026.
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Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 26, 2026.
Kentucky to St. Louis flights
Consider these flights traveling from Kentucky to St. Louis.
Top airline flying from Kentucky to St. Louis
Discover the top airline that operate flights from Kentucky to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$228 | Average$388 | FlexibilityNo cancel fee | On-time71% |