$49+ 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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — STL
Aug 24 — Aug 311
Round-trip
1 adult, Economy
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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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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 July 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 July 25, 2026.
This Southwest deal was found by Cheapflights users on 7/22. 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.
Sat 9/127:00 am
BNA
- STL
Nonstop1h 15m
Southwest
Mon 9/148:00 am
STL
- BNA
Nonstop1h 10m
Southwest
Deal found 7/22![Southwest logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/1112:18 pm
CVG
- STL
1 stop21h 39m
Frontier
Wed 8/124:57 pm
STL
- CVG
1 stop17h 16m
Frontier
Deal found 7/22![Frontier logo]()
$113
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Fri 8/2112:26 pm
CVG
- STL
1 stop5h 56m
Frontier
Mon 8/246:17 pm
STL
- CVG
1 stop16h 04m
Frontier
Deal found 7/23![Frontier logo]()
$116
This Southwest deal was found by Cheapflights users on 7/24. 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.
Thu 8/209:00 am
BNA
- STL
Nonstop1h 10m
Southwest
Sat 8/227:50 am
STL
- BNA
Nonstop1h 10m
Southwest
Deal found 7/24![Southwest logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Wed 9/2312:48 pm
CVG
- STL
1 stop21h 52m
Frontier
Sun 9/2710:35 am
STL
- CVG
1 stop24h 08m
Frontier
Deal found 7/23![Frontier logo]()
$119
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2112:26 pm
CVG
- STL
1 stop5h 56m
Frontier
Sun 8/236:17 pm
STL
- CVG
1 stop16h 04m
Frontier
Deal found 7/20![Frontier logo]()
$121
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:48 pm
CVG
- STL
1 stop21h 52m
Frontier
Mon 9/1410:35 am
STL
- CVG
1 stop24h 08m
Frontier
Deal found 7/20![Frontier logo]()
$123
This Southwest deal was found by Cheapflights users on 7/23. 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.
Fri 9/111:50 pm
BNA
- STL
1 stop4h 15m
Southwest
Wed 9/168:40 am
STL
- BNA
1 stop5h 35m
Southwest
Deal found 7/23![Southwest logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/712:53 pm
CVG
- STL
1 stop21h 04m
Frontier
Mon 8/174:57 pm
STL
- CVG
1 stop17h 24m
Frontier
Deal found 7/20![Frontier logo]()
$146
This Delta deal was found by Cheapflights users on 7/24. 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.
Sat 12/512:15 pm
BNA
- STL
1 stop5h 46m
Delta
Mon 12/74:40 pm
STL
- BNA
1 stop6h 10m
Delta
Deal found 7/24![Delta logo]()
$147
This SmartFares deal was found by Cheapflights users on 7/20. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/39:30 am
BNA
- STL
1 stop3h 51m
Southern / Mokulele
Thu 9/102:00 pm
STL
- BNA
1 stop4h 03m
Southern / Mokulele
Deal found 7/20![Southern / Mokulele logo]()
$158
This deal was found by Cheapflights users on 7/24. 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 9/119:30 am
BNA
- STL
1 stop3h 51m
Southern / Mokulele
Wed 9/162:00 pm
STL
- BNA
1 stop4h 03m
Southern / Mokulele
Deal found 7/24![Southern / Mokulele logo]()
$164
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 July 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 July 25, 2026.
This Southwest deal was found by Cheapflights users on 7/23. 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.
Mon 9/215:40 am
BNA
- STL
1 stop4h 50m
Southwest
Tue 9/224:45 pm
STL
- BNA
Nonstop1h 10m
Southwest
Deal found 7/23![Southwest logo]()
$107
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Wed 9/2312:48 pm
CVG
- STL
1 stop21h 52m
Frontier
Sun 9/2710:35 am
STL
- CVG
1 stop24h 08m
Frontier
Deal found 7/23![Frontier logo]()
$119
This Delta deal was found by Cheapflights users on 7/24. 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.
Sat 12/512:15 pm
BNA
- STL
1 stop5h 46m
Delta
Mon 12/74:40 pm
STL
- BNA
1 stop6h 10m
Delta
Deal found 7/24![Delta logo]()
$147
This deal was found by Cheapflights users on 7/24. 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 10/169:30 am
BNA
- STL
1 stop3h 51m
Southern / Mokulele
Sun 10/182:00 pm
STL
- BNA
1 stop4h 03m
Southern / Mokulele
Deal found 7/24![Southern / Mokulele logo]()
$172
This Southwest deal was found by Cheapflights users on 7/20. 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 8/109:00 am
BNA
- STL
Nonstop1h 10m
Southwest
Wed 8/126:30 am
STL
- BNA
2 stops5h 40m
Southwest
Deal found 7/20![Southwest logo]()
$112
This American Airlines deal was found by Cheapflights users on 7/21. 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 8/256:00 am
CVG
- STL
1 stop7h 54m
American Airlines
Sat 9/59:31 am
STL
- CVG
1 stop8h 27m
American Airlines
Deal found 7/21![American Airlines logo]()
$243
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/812:21 pm
CVG
- STL
1 stop12h 38m
Multiple Airlines
Mon 8/174:57 pm
STL
- CVG
1 stop17h 24m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$244
This Southwest deal was found by Cheapflights users on 7/24. 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.
Thu 8/206:00 pm
BNA
- STL
Nonstop1h 10m
Southwest
Sat 8/229:00 am
STL
- BNA
2 stops5h 35m
Southwest
Deal found 7/24![Southwest logo]()
$132
This United Airlines deal was found by Cheapflights users on 7/22. 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.
Sun 8/166:02 pm
TYS
- STL
1 stop4h 59m
United Airlines
Mon 8/179:30 am
STL
- TYS
1 stop6h 28m
United Airlines
Deal found 7/22![United Airlines logo]()
$299
This Southern / Mokulele deal was found by Cheapflights users on 7/24. 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 Southern / Mokulele is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/149:30 am
BNA
- STL
1 stop3h 51m
Southern / Mokulele
Mon 8/172:00 pm
STL
- BNA
1 stop4h 03m
Southern / Mokulele
Deal found 7/24![Southern / Mokulele logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/2012:26 pm
CVG
- STL
1 stop5h 56m
Frontier
Sun 8/236:17 pm
STL
- CVG
2 stops18h 08m
Frontier
Deal found 7/22![Frontier logo]()
$178
This Delta deal was found by Cheapflights users on 7/20. 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 8/177:41 pm
TYS
- STL
1 stop5h 17m
Delta
Tue 8/256:00 am
STL
- TYS
1 stop4h 11m
Delta
Deal found 7/20![Delta logo]()
$228
This Delta deal was found by Cheapflights users on 7/20. 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 8/176:12 pm
TYS
- STL
1 stop6h 46m
Delta
Sat 8/225:33 pm
STL
- TYS
1 stop4h 06m
Delta
Deal found 7/20![Delta logo]()
$228
This Southwest deal was found by Cheapflights users on 7/20. 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.
Fri 8/2110:00 am
BNA
- STL
1 stop5h 20m
Southwest
Sat 8/222:55 pm
STL
- BNA
1 stop5h 55m
Southwest
Deal found 7/20![Southwest logo]()
$213
This Delta deal was found by Cheapflights users on 7/20. 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.
Tue 8/1812:01 pm
TYS
- STL
1 stop3h 32m
Delta
Thu 8/2712:52 pm
STL
- TYS
1 stop3h 27m
Delta
Deal found 7/20![Delta logo]()
$228
This American Airlines deal was found by Cheapflights users on 7/20. 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 8/185:29 pm
TRI
- STL
1 stop6h 26m
American Airlines
Mon 8/243:32 pm
STL
- TRI
1 stop6h 18m
American Airlines
Deal found 7/20![American Airlines logo]()
$280
This Southwest deal was found by Cheapflights users on 7/20. 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 8/248:50 pm
BNA
- STL
Nonstop1h 15m
Southwest
Sun 8/3011:20 am
STL
- BNA
Nonstop1h 10m
Southwest
Deal found 7/20![Southwest logo]()
$213
This Delta deal was found by Cheapflights users on 7/22. 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.
Mon 10/56:13 pm
TYS
- STL
1 stop6h 29m
Delta
Thu 10/86:00 am
STL
- TYS
1 stop4h 01m
Delta
Deal found 7/22![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 7/22. 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 9/106:00 pm
BNA
- STL
Nonstop1h 10m
Southwest
Sun 9/1310:05 am
STL
- BNA
1 stop4h 20m
Southwest
Deal found 7/22![Southwest logo]()
$218
This American Airlines deal was found by Cheapflights users on 7/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/67:13 pm
LEX
- STL
1 stop4h 27m
American Airlines
Sun 8/96:25 pm
STL
- LEX
1 stop4h 51m
American Airlines
Deal found 7/22![American Airlines logo]()
$319
This Southwest deal was found by Cheapflights users on 7/22. 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.
Sun 11/86:30 am
BNA
- STL
Nonstop1h 15m
Southwest
Sat 11/145:10 pm
STL
- BNA
Nonstop1h 10m
Southwest
Deal found 7/22![Southwest logo]()
$218
This American Airlines deal was found by Cheapflights users on 7/21. 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.
Wed 8/57:13 pm
LEX
- STL
1 stop4h 27m
American Airlines
Sun 8/95:00 am
STL
- LEX
1 stop5h 27m
American Airlines
Deal found 7/21![American Airlines logo]()
$319
This Southwest deal was found by Cheapflights users on 7/23. 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 8/206:45 am
BNA
- STL
Nonstop1h 10m
Southwest
Sun 8/234:20 pm
STL
- BNA
Nonstop1h 10m
Southwest
Deal found 7/23![Southwest logo]()
$218
This Delta deal was found by Cheapflights users on 7/20. 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.
Tue 9/1510:26 am
TYS
- STL
1 stop6h 28m
Delta
Fri 9/184:59 pm
STL
- TYS
1 stop5h 56m
Delta
Deal found 7/20![Delta logo]()
$278
This American Airlines deal was found by Cheapflights users on 7/21. 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.
Wed 8/55:00 pm
LEX
- STL
1 stop6h 40m
American Airlines
Mon 8/103:25 pm
STL
- LEX
1 stop4h 26m
American Airlines
Deal found 7/21![American Airlines logo]()
$319
This Delta deal was found by Cheapflights users on 7/20. 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 8/177:41 pm
TYS
- STL
1 stop5h 17m
Delta
Fri 8/2112:52 pm
STL
- TYS
1 stop5h 00m
Delta
Deal found 7/20![Delta logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/63:05 pm
LEX
- STL
2 stops18h 52m
Multiple Airlines
Sun 8/94:09 pm
STL
- LEX
1 stop23h 21m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$487
This American Airlines deal was found by Cheapflights users on 7/23. 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 8/75:00 pm
LEX
- STL
2 stops8h 14m
American Airlines
Tue 8/116:00 am
STL
- LEX
1 stop4h 27m
American Airlines
Deal found 7/23![American Airlines logo]()
$334
This Southwest deal was found by Cheapflights users on 7/21. 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.
Fri 9/41:00 pm
TYS
- STL
2 stops7h 10m
Southwest
Mon 9/711:40 am
STL
- TYS
1 stop7h 15m
Southwest
Deal found 7/21![Southwest logo]()
$260
This United Airlines deal was found by Cheapflights users on 7/20. 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 8/1210:11 am
LEX
- STL
1 stop5h 46m
United Airlines
Wed 8/126:54 pm
STL
- LEX
1 stop4h 01m
United Airlines
Deal found 7/20![United Airlines logo]()
$511
Last-minute flights from Kentucky to St. LouisDiscover last-minute flight deals from Kentucky to St. Louis. Data last updated July 25, 2026 and is based on user searches.
Discover last-minute flight deals from Kentucky to St. Louis. Data last updated July 25, 2026 and is based on user searches.
This Southern / Mokulele deal was found by Cheapflights users on 7/23. 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 Southern / Mokulele is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/279:30 am
BNA
- STL
1 stop3h 51m
Southern / Mokulele
Thu 7/302:00 pm
STL
- BNA
1 stop4h 03m
Southern / Mokulele
Deal found 7/23![Southern / Mokulele logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 7/21. 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.
Tue 8/49:30 am
BNA
- STL
1 stop3h 51m
Southern / Mokulele
Wed 8/52:00 pm
STL
- BNA
1 stop4h 03m
Southern / Mokulele
Deal found 7/21![Southern / Mokulele logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/612:18 pm
CVG
- STL
1 stop6h 19m
Frontier
Tue 8/116:34 pm
STL
- CVG
1 stop16h 14m
Frontier
Deal found 7/22![Frontier logo]()
$195
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/712:53 pm
CVG
- STL
1 stop21h 04m
Frontier
Mon 8/174:57 pm
STL
- CVG
1 stop17h 24m
Frontier
Deal found 7/20![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/86:25 pm
CVG
- STL
2 stops39h 32m
Multiple Airlines
Mon 8/174:57 pm
STL
- CVG
1 stop17h 24m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/1112:18 pm
CVG
- STL
1 stop21h 39m
Frontier
Wed 8/124:57 pm
STL
- CVG
1 stop17h 16m
Frontier
Deal found 7/22![Frontier logo]()
$113
This Southwest deal was found by Cheapflights users on 7/21. 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 8/188:55 pm
BNA
- STL
Nonstop1h 15m
Southwest
Thu 8/203:45 pm
STL
- BNA
Nonstop1h 10m
Southwest
Deal found 7/21![Southwest logo]()
$167
This Southwest deal was found by Cheapflights users on 7/24. 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.
Thu 8/209:00 am
BNA
- STL
Nonstop1h 10m
Southwest
Sat 8/227:50 am
STL
- BNA
Nonstop1h 10m
Southwest
Deal found 7/24![Southwest logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/2012:26 pm
CVG
- STL
1 stop5h 56m
Frontier
Sun 8/236:17 pm
STL
- CVG
2 stops18h 08m
Frontier
Deal found 7/22![Frontier logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Fri 8/2112:26 pm
CVG
- STL
1 stop5h 56m
Frontier
Mon 8/246:17 pm
STL
- CVG
1 stop16h 04m
Frontier
Deal found 7/23![Frontier logo]()
$116
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2112:26 pm
CVG
- STL
1 stop5h 56m
Frontier
Sun 8/236:17 pm
STL
- CVG
1 stop16h 04m
Frontier
Deal found 7/20![Frontier logo]()
$121
This Southwest deal was found by Cheapflights users on 7/20. 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 8/246:00 pm
BNA
- STL
Nonstop1h 10m
Southwest
Tue 8/2510:15 am
STL
- BNA
Nonstop1h 10m
Southwest
Deal found 7/20![Southwest logo]()
$97
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 July 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 July 25, 2026.
This Southwest deal was found by Cheapflights users on 7/21. 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 8/206:45 am
BNA
- STL
Nonstop1h 10m
Southwest
Deal found 7/21![Southwest logo]()
$49
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1312:18 pm
CVG
- STL
1 stop6h 19m
Frontier
Deal found 7/20![Frontier logo]()
$62
This Kiwi.com deal was found by Cheapflights users on 7/21. 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.
Fri 8/1412:53 pm
CVG
- STL
1 stop21h 04m
Frontier
Deal found 7/21![Frontier logo]()
$63
This Southwest deal was found by Cheapflights users on 7/20. 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.
Sat 9/1210:05 am
BNA
- STL
2 stops6h 35m
Southwest
Deal found 7/20![Southwest logo]()
$64
This Kiwi.com deal was found by Cheapflights users on 7/21. 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.
Tue 9/1512:48 pm
CVG
- STL
1 stop21h 52m
Frontier
Deal found 7/21![Frontier logo]()
$64
This Delta deal was found by Cheapflights users on 7/24. 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.
Sat 8/2210:59 am
BNA
- STL
1 stop5h 18m
Delta
Deal found 7/24![Delta logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 9/189:30 am
BNA
- STL
1 stop3h 51m
Southern / Mokulele
Deal found 7/22![Southern / Mokulele logo]()
$82
This Southern / Mokulele deal was found by Cheapflights users on 7/24. 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 Southern / Mokulele is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/149:30 am
BNA
- STL
1 stop3h 51m
Southern / Mokulele
Deal found 7/24![Southern / Mokulele logo]()
$83
This Southwest deal was found by Cheapflights users on 7/21. 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.
Mon 9/146:45 am
BNA
- STL
Nonstop1h 10m
Southwest
Deal found 7/21![Southwest logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 7/19. 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 8/412:18 pm
CVG
- STL
1 stop6h 19m
Frontier
Deal found 7/19![Frontier logo]()
$91
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 9/2211:10 am
BNA
- STL
2 stops22h 30m
Frontier
Deal found 7/22![Frontier logo]()
$95
This Southwest deal was found by Cheapflights users on 7/20. 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.
Wed 9/166:40 am
BNA
- STL
Nonstop1h 10m
Southwest
Deal found 7/20![Southwest logo]()
$98
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 July 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $97 (Southwest) |
One-way from | $49 (Southwest) |
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 July 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
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Mon 9/21
5:40 am-10:30 am
1 stop4h 50m
Lambert-St Louis
Tue 9/22
4:45 pm-5:55 pm
Nonstop1h 10m
$107
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Mon 8/10
9:00 am-10:10 am
Nonstop1h 10m
Lambert-St Louis
Wed 8/12
6:30 am-12:10 pm
2 stops5h 40m
$112
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Wed 9/23
12:48 pm-9:40 am
1 stop21h 52m
Lambert-St Louis
Sun 9/27
10:35 am-11:43 am
1 stop24h 08m
$119
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Thu 8/20
6:00 pm-7:10 pm
Nonstop1h 10m
Lambert-St Louis
Sat 8/22
9:00 am-2:35 pm
2 stops5h 35m
$132
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Sat 12/5
12:15 pm-6:01 pm
1 stop5h 46m
Lambert-St Louis
Mon 12/7
4:40 pm-10:50 pm
1 stop6h 10m
$147
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Fri 10/16
9:30 am-1:21 pm
1 stop3h 51m
Lambert-St Louis
Sun 10/18
2:00 pm-6:03 pm
1 stop4h 03m
$172
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Fri 8/14
9:30 am-1:21 pm
1 stop3h 51m
Lambert-St Louis
Mon 8/17
2:00 pm-6:03 pm
1 stop4h 03m
$172
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Thu 8/20
12:26 pm-5:22 pm
1 stop5h 56m
Lambert-St Louis
Sun 8/23
6:17 pm-1:25 pm
2 stops18h 08m
$178
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Fri 8/21
10:00 am-3:20 pm
1 stop5h 20m
Lambert-St Louis
Sat 8/22
2:55 pm-8:50 pm
1 stop5h 55m
$213
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Mon 8/24
8:50 pm-10:05 pm
Nonstop1h 15m
Lambert-St Louis
Sun 8/30
11:20 am-12:30 pm
Nonstop1h 10m
$213
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
TRI-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
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Farmington
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Kentucky and St. Louis flights
Browse other Kentucky and St. Louis flight options. Last updated on July 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 July 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 July 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$152 | Average$293 | FlexibilityNo cancel fee | On-time71% |