$63+ Cheap flights from Cincinnati to St. Louis (CVG - 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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
CVG — STL
Jun 5 — Jun 121
Round-trip
1 adult, Economy
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Find cheap flights from Cincinnati 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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Cheapest flights from Cincinnati to St. LouisExplore the most affordable flight options available from Cincinnati to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 6, 2026.
Explore the most affordable flight options available from Cincinnati to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 6/212:12 pm
CVG
- STL
1 stop6h 21m
Frontier
Tue 6/96:31 pm
STL
- CVG
1 stop16h 18m
Frontier
Deal found 5/5![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 6/2112:24 pm
CVG
- STL
1 stop21h 28m
Frontier
Wed 6/245:06 pm
STL
- CVG
1 stop17h 08m
Frontier
Deal found 5/4![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 6/412:12 pm
CVG
- STL
1 stop6h 21m
Frontier
Thu 6/116:31 pm
STL
- CVG
1 stop16h 18m
Frontier
Deal found 5/4![Frontier logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 6/112:46 pm
CVG
- STL
2 stops31h 37m
Frontier
Mon 6/85:27 pm
STL
- CVG
1 stop16h 47m
Frontier
Deal found 5/4![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 6/212:12 pm
CVG
- STL
1 stop6h 21m
Multiple Airlines
Tue 6/96:31 pm
STL
- CVG
2 stops18h 24m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 5/2. 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 6/312:46 pm
CVG
- STL
2 stops12h 11m
Frontier
Mon 6/225:06 pm
STL
- CVG
1 stop17h 08m
Frontier
Deal found 5/2![Frontier logo]()
$179
This Frontier deal was found by Cheapflights users on 5/3. 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.
Tue 6/212:12 pm
CVG
- STL
1 stop6h 21m
Frontier
Thu 6/44:19 pm
STL
- CVG
1 stop6h 19m
Frontier
Deal found 5/3![Frontier logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 8/2812:54 pm
CVG
- STL
1 stop20h 58m
Frontier
Sun 8/306:33 pm
STL
- CVG
1 stop16h 16m
Frontier
Deal found 5/4![Frontier logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 6/1812:24 pm
CVG
- STL
1 stop6h 06m
Frontier
Thu 6/256:31 pm
STL
- CVG
1 stop16h 18m
Frontier
Deal found 5/4![Frontier logo]()
$187
This Frontier deal was found by Cheapflights users on 5/5. 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.
Tue 6/212:12 pm
CVG
- STL
1 stop6h 21m
Frontier
Wed 6/34:19 pm
STL
- CVG
1 stop6h 19m
Frontier
Deal found 5/5![Frontier logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 5/2. 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 6/512:46 pm
CVG
- STL
1 stop21h 09m
Frontier
Tue 6/166:31 pm
STL
- CVG
2 stops25h 04m
Frontier
Deal found 5/2![Frontier logo]()
$191
Best flights from Cincinnati to St. LouisDiscover carefully curated flight deals from Cincinnati to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 6, 2026.
Discover carefully curated flight deals from Cincinnati to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 6, 2026.
This Frontier deal was found by Cheapflights users on 5/3. 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.
Tue 6/212:12 pm
CVG
- STL
1 stop6h 21m
Frontier
Thu 6/44:19 pm
STL
- CVG
1 stop6h 19m
Frontier
Deal found 5/3![Frontier logo]()
$180
This American Airlines deal was found by Cheapflights users on 5/6. 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 8/47:41 am
CVG
- STL
1 stop5h 19m
American Airlines
Tue 8/46:12 pm
STL
- CVG
1 stop4h 47m
American Airlines
Deal found 5/6![American Airlines logo]()
$295
This Southwest deal was found by Cheapflights users on 5/5. 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 6/27:05 am
CVG
- STL
2 stops9h 05m
Southwest
Tue 6/910:15 am
STL
- CVG
2 stops9h 10m
Southwest
Deal found 5/5![Southwest logo]()
$305
This United Airlines deal was found by Cheapflights users on 5/4. 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 5/308:00 pm
CVG
- STL
1 stop3h 50m
United Airlines
Sun 5/316:00 am
STL
- CVG
1 stop6h 09m
United Airlines
Deal found 5/4![United Airlines logo]()
$349
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 6/177:15 am
CVG
- STL
1 stop17h 34m
Frontier
Tue 6/236:31 pm
STL
- CVG
1 stop16h 18m
Frontier
Deal found 5/5![Frontier logo]()
$225
This Kiwi.com deal was found by Cheapflights users on 5/1. 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 6/78:36 pm
CVG
- STL
2 stops13h 19m
Frontier
Fri 6/125:06 pm
STL
- CVG
1 stop17h 41m
Frontier
Deal found 5/1![Frontier logo]()
$240
This Southwest deal was found by Cheapflights users on 5/2. 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 6/53:50 pm
CVG
- STL
2 stops6h 00m
Southwest
Tue 6/161:45 pm
STL
- CVG
2 stops8h 20m
Southwest
Deal found 5/2![Southwest logo]()
$345
This Southwest deal was found by Cheapflights users on 5/2. 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 6/37:05 am
CVG
- STL
2 stops9h 05m
Southwest
Mon 6/224:35 pm
STL
- CVG
2 stops6h 50m
Southwest
Deal found 5/2![Southwest logo]()
$351
This Southwest deal was found by Cheapflights users on 5/2. 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 7/245:30 am
CVG
- STL
1 stop4h 35m
Southwest
Sun 7/266:00 am
STL
- CVG
2 stops6h 25m
Southwest
Deal found 5/2![Southwest logo]()
$352
This Southwest deal was found by Cheapflights users on 5/2. 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 5/277:05 am
CVG
- STL
2 stops9h 05m
Southwest
Wed 6/35:35 am
STL
- CVG
2 stops6h 05m
Southwest
Deal found 5/2![Southwest logo]()
$357
This Southwest deal was found by Cheapflights users on 5/4. 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 8/212:10 pm
CVG
- STL
2 stops9h 10m
Southwest
Mon 8/2411:05 am
STL
- CVG
2 stops9h 30m
Southwest
Deal found 5/4![Southwest logo]()
$357
This Southwest deal was found by Cheapflights users on 5/5. 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 6/155:30 am
CVG
- STL
2 stops14h 00m
Southwest
Sat 6/2012:50 pm
STL
- CVG
2 stops6h 05m
Southwest
Deal found 5/5![Southwest logo]()
$363
Last-minute flights from Cincinnati to St. LouisDiscover last-minute flight deals from Cincinnati to St. Louis. Data last updated May 6, 2026 and is based on user searches.
Discover last-minute flight deals from Cincinnati to St. Louis. Data last updated May 6, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 6/112:46 pm
CVG
- STL
2 stops31h 37m
Frontier
Mon 6/85:27 pm
STL
- CVG
1 stop16h 47m
Frontier
Deal found 5/4![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 6/19:30 pm
CVG
- STL
2 stops36h 25m
Frontier
Wed 6/105:06 pm
STL
- CVG
1 stop17h 08m
Frontier
Deal found 5/6![Frontier logo]()
$194
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 6/212:12 pm
CVG
- STL
1 stop6h 21m
Frontier
Tue 6/96:31 pm
STL
- CVG
1 stop16h 18m
Frontier
Deal found 5/5![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 6/212:12 pm
CVG
- STL
1 stop6h 21m
Multiple Airlines
Tue 6/96:31 pm
STL
- CVG
2 stops18h 24m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$173
This Frontier deal was found by Cheapflights users on 5/3. 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.
Tue 6/212:12 pm
CVG
- STL
1 stop6h 21m
Frontier
Thu 6/44:19 pm
STL
- CVG
1 stop6h 19m
Frontier
Deal found 5/3![Frontier logo]()
$180
This Frontier deal was found by Cheapflights users on 5/5. 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.
Tue 6/212:12 pm
CVG
- STL
1 stop6h 21m
Frontier
Wed 6/34:19 pm
STL
- CVG
1 stop6h 19m
Frontier
Deal found 5/5![Frontier logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 5/2. 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 6/312:46 pm
CVG
- STL
2 stops12h 11m
Frontier
Mon 6/225:06 pm
STL
- CVG
1 stop17h 08m
Frontier
Deal found 5/2![Frontier logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 6/412:12 pm
CVG
- STL
1 stop6h 21m
Frontier
Thu 6/116:31 pm
STL
- CVG
1 stop16h 18m
Frontier
Deal found 5/4![Frontier logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 5/2. 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 6/512:46 pm
CVG
- STL
1 stop21h 09m
Frontier
Tue 6/166:31 pm
STL
- CVG
2 stops25h 04m
Frontier
Deal found 5/2![Frontier logo]()
$191
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 6/1812:24 pm
CVG
- STL
1 stop6h 06m
Frontier
Thu 6/256:31 pm
STL
- CVG
1 stop16h 18m
Frontier
Deal found 5/4![Frontier logo]()
$187
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 6/2112:24 pm
CVG
- STL
1 stop21h 28m
Frontier
Thu 6/256:31 pm
STL
- CVG
1 stop16h 18m
Frontier
Deal found 5/4![Frontier logo]()
$126
One-way flights from Cincinnati to St. LouisSearch for one-way flight options from Cincinnati to St. Louis. Find affordable one-way fares based on user searches. Data last updated May 6, 2026.
Search for one-way flight options from Cincinnati to St. Louis. Find affordable one-way fares based on user searches. Data last updated May 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/1. 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 6/212:12 pm
CVG
- STL
1 stop6h 21m
Frontier
Deal found 5/1![Frontier logo]()
$63
This Kiwi.com deal was found by Cheapflights users on 5/2. 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 6/712:12 pm
CVG
- STL
1 stop21h 43m
Frontier
Deal found 5/2![Frontier logo]()
$65
This Kiwi.com deal was found by Cheapflights users on 5/2. 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 7/1612:27 pm
CVG
- STL
1 stop21h 30m
Frontier
Deal found 5/2![Frontier logo]()
$94
This Frontier deal was found by Cheapflights users on 5/5. 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 5/2112:12 pm
CVG
- STL
1 stop5h 03m
Frontier
Deal found 5/5![Frontier logo]()
$125
This Frontier deal was found by Cheapflights users on 5/1. 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 6/132:57 pm
CVG
- STL
1 stop9h 52m
Frontier
Deal found 5/1![Frontier logo]()
$141
This United Airlines deal was found by Cheapflights users on 5/5. 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 6/27:00 am
CVG
- STL
1 stop6h 11m
United Airlines
Deal found 5/5![United Airlines logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 5/209:30 pm
CVG
- STL
1 stop27h 27m
Frontier
Deal found 5/4![Frontier logo]()
$152
This Southwest deal was found by Cheapflights users on 5/5. 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 6/27:05 am
CVG
- STL
2 stops9h 05m
Southwest
Deal found 5/5![Southwest logo]()
$153
This Frontier deal was found by Cheapflights users on 5/5. 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 5/165:37 pm
CVG
- STL
1 stop7h 44m
Frontier
Deal found 5/5![Frontier logo]()
$155
Find flight deals from Cincinnati to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from Cincinnati (CVG) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $124 (Kiwi.com) |
One-way from | $63 (Kiwi.com) |
Popular in | September |
Cheapest in | August |
Average price | $350 |
Cheapflights Fare Finder
Customize your flight search to find flights from Cincinnati 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 May 6, 2026.
Use the filters below to find and compare flights from Cincinnati to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Tue 6/2
12:12 pm-5:33 pm
1 stop6h 21m
Lambert-St Louis
Thu 6/4
4:19 pm-11:38 pm
1 stop6h 19m
$180
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Wed 6/17
7:15 am-11:49 pm
1 stop17h 34m
Lambert-St Louis
Tue 6/23
6:31 pm-11:49 am
1 stop16h 18m
$225
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Sun 6/7
8:36 pm-8:55 am
2 stops13h 19m
Lambert-St Louis
Fri 6/12
5:06 pm-11:47 am
1 stop17h 41m
$240
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Tue 8/4
7:41 am-12:00 pm
1 stop5h 19m
Lambert-St Louis
Tue 8/4
6:12 pm-11:59 pm
1 stop4h 47m
$295
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Tue 6/2
7:05 am-3:10 pm
2 stops9h 05m
Lambert-St Louis
Tue 6/9
10:15 am-8:25 pm
2 stops9h 10m
$305
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Fri 6/5
3:50 pm-8:50 pm
2 stops6h 00m
Lambert-St Louis
Tue 6/16
1:45 pm-11:05 pm
2 stops8h 20m
$345
Quickest round-trip
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Sat 5/30
8:00 pm-10:50 pm
1 stop3h 50m
Lambert-St Louis
Sun 5/31
6:00 am-1:09 pm
1 stop6h 09m
$349
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Wed 6/3
7:05 am-3:10 pm
2 stops9h 05m
Lambert-St Louis
Mon 6/22
4:35 pm-12:25 am
2 stops6h 50m
$351
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Fri 7/24
5:30 am-9:05 am
1 stop4h 35m
Lambert-St Louis
Sun 7/26
6:00 am-1:25 pm
2 stops6h 25m
$352
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Wed 5/27
7:05 am-3:10 pm
2 stops9h 05m
Lambert-St Louis
Wed 6/3
5:35 am-12:40 pm
2 stops6h 05m
$357
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Cincinnati to St. Louis
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Cincinnati to St. Louis in May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Cincinnati-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Cincinnati-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Cincinnati-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Cincinnati-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Cincinnati-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Cincinnati to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Cincinnati with our price prediction graph.
CVG-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 Cincinnati to St. Louis
What is the cheapest month to book a flight from Cincinnati to St. Louis?
Currently, August is the cheapest month in which you can book a flight from Cincinnati to St. Louis (average of $269). Flying from Cincinnati to St. Louis in September is currently the most expensive (average of $572). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Cincinnati to St. Louis?
Reviews of airlines servicing St. Louis
Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated May 6, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from Cincinnati to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Overall
7.9
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Overall
7.9
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Overall
7.9
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Overall
7.9
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Overall
7.9
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Overall
7.9
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Cincinnati 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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Cincinnati and St. Louis flights
Browse other Cincinnati and St. Louis flight options. Last updated on May 6, 2026.
Other flights from Cincinnati
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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 May 6, 2026.
Top 5 airlines flying from Cincinnati to St. Louis
Discover the top 5 airlines that operate flights from Cincinnati 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 May 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$85 | Average$230 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$218 | Average$322 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$236 | Average$416 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$254 | Average$422 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$259 | Average$380 | FlexibilityNo cancel fee | On-time69% |