$70+ Cheap flights from Kentucky to St. Louis (STL)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — STL
May 25 — Jun 11
Round-trip
1 adult, Economy
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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 April 25, 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 April 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/22. 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.
Thu 4/232:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Thu 4/309:50 am
STL
- BNA
1 stop3h 58m
Southern / Mokulele
Deal found 4/22![Southern / Mokulele logo]()
$171
This Frontier deal was found by Cheapflights users on 4/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/285:09 pm
BNA
- STL
1 stop6h 48m
Frontier
Mon 6/18:08 pm
STL
- BNA
1 stop22h 14m
Frontier
Deal found 4/20![Frontier logo]()
$181
This Expedia deal was found by Cheapflights users on 4/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1712:12 pm
CVG
- STL
1 stop5h 42m
Frontier
Mon 5/184:19 pm
STL
- CVG
1 stop19h 48m
Frontier
Deal found 4/24![Frontier logo]()
$181
This Kissandfly.com deal was found by Cheapflights users on 4/22. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/289:30 am
BNA
- STL
1 stop3h 51m
Southern / Mokulele
Mon 6/12:00 pm
STL
- BNA
1 stop4h 03m
Southern / Mokulele
Deal found 4/22![Southern / Mokulele logo]()
$182
This Trip.com deal was found by Cheapflights users on 4/22. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/262:35 pm
BNA
- STL
1 stop4h 01m
Multiple Airlines
Fri 5/14:59 pm
STL
- BNA
1 stop23h 59m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$194
This Southwest deal was found by Cheapflights users on 4/21. 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.
Tue 5/266:25 am
BNA
- STL
Nonstop1h 20m
Southwest
Tue 5/2611:35 am
STL
- BNA
Nonstop1h 10m
Southwest
Deal found 4/21![Southwest logo]()
$198
This Trip.com deal was found by Cheapflights users on 4/20. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/112:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Tue 5/127:20 pm
STL
- BNA
1 stop13h 43m
Southern / Mokulele
Deal found 4/20![Southern / Mokulele logo]()
$199
This Frontier deal was found by Cheapflights users on 4/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/18:32 pm
TYS
- STL
1 stop23h 51m
Frontier
Tue 6/98:08 pm
STL
- TYS
1 stop22h 29m
Frontier
Deal found 4/22![Frontier logo]()
$201
This Expedia deal was found by Cheapflights users on 4/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/711:50 am
CVG
- STL
1 stop8h 33m
Frontier
Mon 5/118:08 pm
STL
- CVG
1 stop14h 47m
Frontier
Deal found 4/22![Frontier logo]()
$201
This Mytrip deal was found by Cheapflights users on 4/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/82:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Mon 6/157:20 pm
STL
- BNA
1 stop13h 43m
Southern / Mokulele
Deal found 4/24![Southern / Mokulele logo]()
$203
This Southwest deal was found by Cheapflights users on 4/21. 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.
Tue 5/196:25 am
BNA
- STL
Nonstop1h 20m
Southwest
Tue 5/262:30 pm
STL
- BNA
Nonstop1h 10m
Southwest
Deal found 4/21![Southwest logo]()
$210
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/139:30 am
BNA
- STL
1 stop6h 31m
Southern / Mokulele
Thu 5/147:20 pm
STL
- BNA
1 stop13h 43m
Southern / Mokulele
Deal found 4/21![Southern / Mokulele logo]()
$211
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 April 25, 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 April 25, 2026.
This Frontier deal was found by Cheapflights users on 4/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/18:32 pm
TYS
- STL
1 stop23h 51m
Frontier
Tue 6/98:08 pm
STL
- TYS
1 stop22h 29m
Frontier
Deal found 4/22![Frontier logo]()
$201
This Southwest deal was found by Cheapflights users on 4/21. 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.
Tue 5/193:40 pm
BNA
- STL
1 stop4h 15m
Southwest
Tue 5/2611:35 am
STL
- BNA
Nonstop1h 10m
Southwest
Deal found 4/21![Southwest logo]()
$214
This Delta deal was found by Cheapflights users on 4/21. 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.
Tue 5/196:20 am
BNA
- STL
1 stop6h 02m
Delta
Tue 5/2610:49 am
STL
- BNA
1 stop6h 42m
Delta
Deal found 4/21![Delta logo]()
$217
This United Airlines deal was found by Cheapflights users on 4/20. 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 5/209:10 am
SDF
- STL
1 stop4h 37m
United Airlines
Mon 5/257:22 am
STL
- SDF
1 stop5h 13m
United Airlines
Deal found 4/20![United Airlines logo]()
$256
This American Airlines deal was found by Cheapflights users on 4/20. 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 5/162:15 pm
LEX
- STL
1 stop6h 15m
American Airlines
Sat 5/236:00 am
STL
- LEX
1 stop3h 42m
American Airlines
Deal found 4/20![American Airlines logo]()
$290
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2112:12 pm
CVG
- STL
1 stop5h 03m
Multiple Airlines
Thu 5/286:33 pm
STL
- CVG
2 stops16h 47m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 4/21. 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.
Tue 5/197:05 am
CVG
- STL
2 stops9h 05m
Southwest
Tue 5/265:35 am
STL
- CVG
2 stops6h 05m
Southwest
Deal found 4/21![Southwest logo]()
$241
This Delta deal was found by Cheapflights users on 4/21. 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.
Wed 5/275:47 pm
SDF
- STL
1 stop7h 12m
Delta
Mon 6/15:20 pm
STL
- SDF
1 stop6h 05m
Delta
Deal found 4/21![Delta logo]()
$256
This Southwest deal was found by Cheapflights users on 4/22. 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.
Thu 5/286:35 am
BNA
- STL
Nonstop1h 20m
Southwest
Mon 6/18:45 pm
STL
- BNA
Nonstop1h 10m
Southwest
Deal found 4/22![Southwest logo]()
$255
This Kiwi.com deal was found by Cheapflights users on 4/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2212:46 pm
CVG
- STL
1 stop21h 09m
Frontier
Fri 5/295:27 pm
STL
- CVG
1 stop17h 14m
Frontier
Deal found 4/24![Frontier logo]()
$287
This United Airlines deal was found by Cheapflights users on 4/21. 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.
Tue 5/195:30 am
LEX
- STL
1 stop4h 09m
United Airlines
Tue 5/265:29 pm
STL
- LEX
1 stop5h 30m
United Airlines
Deal found 4/21![United Airlines logo]()
$290
This American Airlines deal was found by Cheapflights users on 4/21. 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.
Tue 5/191:11 pm
LEX
- STL
1 stop7h 19m
American Airlines
Tue 5/266:00 am
STL
- LEX
1 stop3h 42m
American Airlines
Deal found 4/21![American Airlines logo]()
$290
This Delta deal was found by Cheapflights users on 4/23. 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.
Thu 5/281:59 pm
CVG
- STL
1 stop4h 57m
Delta
Mon 6/17:05 am
STL
- CVG
1 stop4h 48m
Delta
Deal found 4/23![Delta logo]()
$267
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/76:00 am
CVG
- STL
2 stops27h 55m
Multiple Airlines
Sun 6/146:31 pm
STL
- CVG
1 stop16h 18m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$314
This Southwest deal was found by Cheapflights users on 4/20. 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.
Mon 6/86:50 pm
CVG
- STL
2 stops6h 45m
Southwest
Wed 6/1010:15 am
STL
- CVG
2 stops9h 10m
Southwest
Deal found 4/20![Southwest logo]()
$265
This Delta deal was found by Cheapflights users on 4/20. 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.
Mon 5/115:10 pm
BNA
- STL
1 stop6h 49m
Delta
Sat 5/164:00 pm
STL
- BNA
1 stop4h 06m
Delta
Deal found 4/20![Delta logo]()
$273
This United Airlines deal was found by Cheapflights users on 4/24. 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.
Thu 6/45:15 am
LEX
- STL
1 stop4h 26m
United Airlines
Sun 6/75:41 pm
STL
- LEX
1 stop5h 18m
United Airlines
Deal found 4/24![United Airlines logo]()
$309
This Southwest deal was found by Cheapflights users on 4/21. 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 5/146:35 am
BNA
- STL
Nonstop1h 20m
Southwest
Sat 5/162:25 pm
STL
- BNA
Nonstop1h 10m
Southwest
Deal found 4/21![Southwest logo]()
$270
This Delta deal was found by Cheapflights users on 4/23. 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.
Thu 8/137:10 am
LEX
- STL
1 stop6h 43m
Delta
Sat 8/1510:45 am
STL
- LEX
1 stop5h 25m
Delta
Deal found 4/23![Delta logo]()
$290
This United Airlines deal was found by Cheapflights users on 4/23. 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.
Fri 6/57:54 pm
CVG
- STL
1 stop3h 50m
United Airlines
Sun 6/71:13 pm
STL
- CVG
1 stop5h 00m
United Airlines
Deal found 4/23![United Airlines logo]()
$321
This American Airlines deal was found by Cheapflights users on 4/25. 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 6/55:15 am
TRI
- STL
1 stop4h 18m
American Airlines
Mon 6/85:00 pm
STL
- TRI
1 stop6h 13m
American Airlines
Deal found 4/25![American Airlines logo]()
$359
This Southwest deal was found by Cheapflights users on 4/23. 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 5/286:45 pm
TYS
- STL
1 stop5h 30m
Southwest
Sun 5/312:10 pm
STL
- TYS
2 stops5h 55m
Southwest
Deal found 4/23![Southwest logo]()
$273
This Southwest deal was found by Cheapflights users on 4/20. 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.
Tue 5/198:40 pm
BNA
- STL
Nonstop1h 20m
Southwest
Thu 5/214:30 pm
STL
- BNA
1 stop4h 30m
Southwest
Deal found 4/20![Southwest logo]()
$275
This Delta deal was found by Cheapflights users on 4/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/126:00 am
LEX
- STL
1 stop4h 46m
Delta
Sun 6/147:12 pm
STL
- LEX
1 stop3h 55m
Delta
Deal found 4/25![Delta logo]()
$309
This American Airlines deal was found by Cheapflights users on 4/20. 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.
Tue 5/58:03 am
SDF
- STL
1 stop7h 30m
American Airlines
Tue 5/125:51 am
STL
- SDF
1 stop3h 55m
American Airlines
Deal found 4/20![American Airlines logo]()
$375
This United Airlines deal was found by Cheapflights users on 4/20. 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 8/295:20 am
LEX
- STL
1 stop6h 14m
United Airlines
Wed 9/25:00 am
STL
- LEX
1 stop4h 23m
United Airlines
Deal found 4/20![United Airlines logo]()
$341
This Southwest deal was found by Cheapflights users on 4/24. 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 5/166:40 am
TYS
- STL
2 stops10h 45m
Southwest
Tue 5/198:25 am
STL
- TYS
1 stop4h 55m
Southwest
Deal found 4/24![Southwest logo]()
$276
This Delta deal was found by Cheapflights users on 4/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/48:20 pm
LEX
- STL
1 stop4h 39m
Delta
Sun 6/75:24 pm
STL
- LEX
1 stop5h 43m
Delta
Deal found 4/24![Delta logo]()
$309
This United Airlines deal was found by Cheapflights users on 4/20. 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 5/2211:17 am
CVG
- STL
1 stop5h 29m
United Airlines
Mon 5/257:05 pm
STL
- CVG
1 stop3h 54m
United Airlines
Deal found 4/20![United Airlines logo]()
$347
This Southwest deal was found by Cheapflights users on 4/22. 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.
Tue 5/126:25 am
BNA
- STL
Nonstop1h 20m
Southwest
Thu 5/147:35 am
STL
- BNA
Nonstop1h 10m
Southwest
Deal found 4/22![Southwest logo]()
$279
Last-minute flights from Kentucky to St. LouisDiscover last-minute flight deals from Kentucky to St. Louis. Data last updated April 25, 2026 and is based on user searches.
Discover last-minute flight deals from Kentucky to St. Louis. Data last updated April 25, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 4/22. 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.
Thu 4/232:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Thu 4/309:50 am
STL
- BNA
1 stop3h 58m
Southern / Mokulele
Deal found 4/22![Southern / Mokulele logo]()
$171
This Trip.com deal was found by Cheapflights users on 4/22. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/262:35 pm
BNA
- STL
1 stop4h 01m
Multiple Airlines
Fri 5/14:59 pm
STL
- BNA
1 stop23h 59m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$194
This Expedia deal was found by Cheapflights users on 4/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/711:50 am
CVG
- STL
1 stop8h 33m
Frontier
Mon 5/118:08 pm
STL
- CVG
1 stop14h 47m
Frontier
Deal found 4/22![Frontier logo]()
$201
This Trip.com deal was found by Cheapflights users on 4/20. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/112:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Tue 5/127:20 pm
STL
- BNA
1 stop13h 43m
Southern / Mokulele
Deal found 4/20![Southern / Mokulele logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/139:30 am
BNA
- STL
1 stop6h 31m
Southern / Mokulele
Thu 5/147:20 pm
STL
- BNA
1 stop13h 43m
Southern / Mokulele
Deal found 4/21![Southern / Mokulele logo]()
$211
This Southern / Mokulele deal was found by Cheapflights users on 4/21. 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 Southern / Mokulele is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/142:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Thu 5/217:20 pm
STL
- BNA
1 stop13h 43m
Southern / Mokulele
Deal found 4/21![Southern / Mokulele logo]()
$212
This Expedia deal was found by Cheapflights users on 4/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1712:12 pm
CVG
- STL
1 stop5h 42m
Frontier
Mon 5/184:19 pm
STL
- CVG
1 stop19h 48m
Frontier
Deal found 4/24![Frontier logo]()
$181
This Southwest deal was found by Cheapflights users on 4/21. 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.
Tue 5/196:25 am
BNA
- STL
Nonstop1h 20m
Southwest
Tue 5/262:30 pm
STL
- BNA
Nonstop1h 10m
Southwest
Deal found 4/21![Southwest logo]()
$210
This Delta deal was found by Cheapflights users on 4/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/205:48 am
CVG
- STL
1 stop4h 56m
Delta
Wed 5/276:00 am
STL
- CVG
1 stop3h 47m
Delta
Deal found 4/22![Delta logo]()
$213
This Southwest deal was found by Cheapflights users on 4/21. 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.
Tue 5/266:25 am
BNA
- STL
Nonstop1h 20m
Southwest
Tue 5/2611:35 am
STL
- BNA
Nonstop1h 10m
Southwest
Deal found 4/21![Southwest logo]()
$198
This Frontier deal was found by Cheapflights users on 4/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/285:09 pm
BNA
- STL
1 stop6h 48m
Frontier
Mon 6/18:08 pm
STL
- BNA
1 stop22h 14m
Frontier
Deal found 4/20![Frontier logo]()
$181
This Kissandfly.com deal was found by Cheapflights users on 4/22. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/289:30 am
BNA
- STL
1 stop3h 51m
Southern / Mokulele
Mon 6/12:00 pm
STL
- BNA
1 stop4h 03m
Southern / Mokulele
Deal found 4/22![Southern / Mokulele logo]()
$182
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 April 25, 2026.
Search for one-way flight options from Kentucky to St. Louis. Find affordable one-way fares based on user searches. Data last updated April 25, 2026.
This Frontier deal was found by Cheapflights users on 4/23. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/165:02 pm
BNA
- STL
1 stop7h 19m
Frontier
Deal found 4/23![Frontier logo]()
$70
This Frontier deal was found by Cheapflights users on 4/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1112:50 pm
CVG
- STL
1 stop7h 33m
Frontier
Deal found 4/20![Frontier logo]()
$70
This Delta deal was found by Cheapflights users on 4/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2011:05 am
BNA
- STL
1 stop5h 05m
Delta
Deal found 4/24![Delta logo]()
$74
This Trip.com deal was found by Cheapflights users on 4/24. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/282:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Deal found 4/24![Southern / Mokulele logo]()
$75
This Frontier deal was found by Cheapflights users on 4/23. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/152:08 pm
BNA
- STL
1 stop10h 13m
Frontier
Deal found 4/23![Frontier logo]()
$76
This Trip.com deal was found by Cheapflights users on 4/24. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/222:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Deal found 4/24![Southern / Mokulele logo]()
$81
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/212:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Deal found 4/21![Southern / Mokulele logo]()
$82
This deal was found by Cheapflights users on 4/24. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/82:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Deal found 4/24![Southern / Mokulele logo]()
$83
This Frontier deal was found by Cheapflights users on 4/23. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/95:02 pm
BNA
- STL
1 stop7h 19m
Frontier
Deal found 4/23![Frontier logo]()
$90
This Priceline deal was found by Cheapflights users on 4/20. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2812:12 pm
CVG
- STL
1 stop6h 21m
Frontier
Deal found 4/20![Frontier logo]()
$90
This Frontier deal was found by Cheapflights users on 4/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/245:09 pm
BNA
- STL
1 stop7h 00m
Frontier
Deal found 4/22![Frontier logo]()
$95
This Frontier deal was found by Cheapflights users on 4/23. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/2412:12 pm
CVG
- STL
1 stop6h 21m
Frontier
Deal found 4/23![Frontier logo]()
$95
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 April 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $181 (Frontier) |
One-way from | $70 (Frontier) |
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 2,558,603 searches. Data last updated April 25, 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
KnoxvilleSt. Louis
TYS - STL
TYSSTL
Knoxville McGhee Tyson
Mon 6/1
8:32 pm-7:23 pm
1 stop23h 51m
Lambert-St Louis
Tue 6/9
8:08 pm-7:37 pm
1 stop22h 29m
$201
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Tue 5/19
3:40 pm-7:55 pm
1 stop4h 15m
Lambert-St Louis
Tue 5/26
11:35 am-12:45 pm
Nonstop1h 10m
$214
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Tue 5/19
6:20 am-12:22 pm
1 stop6h 02m
Lambert-St Louis
Tue 5/26
10:49 am-5:31 pm
1 stop6h 42m
$217
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Tue 5/19
7:05 am-3:10 pm
2 stops9h 05m
Lambert-St Louis
Tue 5/26
5:35 am-12:40 pm
2 stops6h 05m
$241
Quickest round-trip
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Thu 5/28
6:35 am-7:55 am
Nonstop1h 20m
Lambert-St Louis
Mon 6/1
8:45 pm-9:55 pm
Nonstop1h 10m
$255
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Wed 5/20
9:10 am-12:47 pm
1 stop4h 37m
Lambert-St Louis
Mon 5/25
7:22 am-1:35 pm
1 stop5h 13m
$256
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Wed 5/27
5:47 pm-11:59 pm
1 stop7h 12m
Lambert-St Louis
Mon 6/1
5:20 pm-12:25 am
1 stop6h 05m
$256
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Mon 6/8
6:50 pm-12:35 am
2 stops6h 45m
Lambert-St Louis
Wed 6/10
10:15 am-8:25 pm
2 stops9h 10m
$265
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Thu 5/28
1:59 pm-5:56 pm
1 stop4h 57m
Lambert-St Louis
Mon 6/1
7:05 am-12:53 pm
1 stop4h 48m
$267
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Thu 5/14
6:35 am-7:55 am
Nonstop1h 20m
Lambert-St Louis
Sat 5/16
2:25 pm-3:35 pm
Nonstop1h 10m
$270
Showing 1-10 of 60 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.
BNA-STL
CVG-STL
TYS-STL
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
BNA-STL
CVG-STL
TYS-STL
SDF-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 locationsEdwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus
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Kentucky and St. Louis flights
Browse other Kentucky and St. Louis flight options. Last updated on April 25, 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 April 25, 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 2,558,603 searches. Data last updated April 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$152 | Average$268 | FlexibilityNo cancel fee | On-time71% |