$69+ Cheap flights from Indiana 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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
IND — STL
May 31 — Jun 71
Round-trip
1 adult, Economy
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Find cheap flights from Indiana to St. Louis with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Indiana to St. Louis
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Cheapest flights from Indiana to St. LouisExplore the most affordable flight options available from Indiana to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2026.
Explore the most affordable flight options available from Indiana to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 5/2612:12 pm
CVG
- STL
1 stop21h 43m
Frontier
Tue 6/26:33 pm
STL
- CVG
1 stop16h 08m
Frontier
Deal found 4/28![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 5/2412:12 pm
CVG
- STL
1 stop21h 43m
Frontier
Mon 5/255:27 pm
STL
- CVG
1 stop16h 37m
Frontier
Deal found 4/27![Frontier logo]()
$136
This Frontier deal was found by Cheapflights users on 4/28. 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 5/3112:12 pm
CVG
- STL
1 stop6h 21m
Frontier
Wed 6/34:19 pm
STL
- CVG
1 stop6h 19m
Frontier
Deal found 4/28![Frontier logo]()
$180
This Frontier deal was found by Cheapflights users on 4/28. 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 5/148:40 pm
CVG
- STL
1 stop24h 43m
Frontier
Mon 5/184:19 pm
STL
- CVG
1 stop6h 36m
Frontier
Deal found 4/28![Frontier logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 5/257:49 pm
CVG
- STL
1 stop22h 44m
Frontier
Mon 6/15:27 pm
STL
- CVG
1 stop16h 37m
Frontier
Deal found 4/27![Frontier logo]()
$187
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 6/512:26 pm
IND
- STL
2 stops21h 29m
Multiple Airlines
Tue 6/96:31 pm
STL
- IND
1 stop15h 48m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$203
This Expedia deal was found by Cheapflights users on 4/27. 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.
Sat 5/238:36 pm
CVG
- STL
1 stop23h 47m
Frontier
Mon 6/18:08 pm
STL
- CVG
1 stop22h 33m
Frontier
Deal found 4/27![Frontier logo]()
$205
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 5/1712:12 pm
CVG
- STL
1 stop21h 43m
Frontier
Mon 6/15:27 pm
STL
- CVG
1 stop16h 37m
Frontier
Deal found 4/27![Frontier logo]()
$210
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 5/277:00 am
CVG
- STL
1 stop17h 57m
Frontier
Wed 6/35:27 pm
STL
- CVG
1 stop16h 37m
Frontier
Deal found 4/29![Frontier logo]()
$214
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 6/512:14 pm
IND
- STL
1 stop21h 41m
Frontier
Tue 6/96:31 pm
STL
- IND
1 stop15h 48m
Frontier
Deal found 4/30![Frontier logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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
Fri 6/128:08 pm
STL
- CVG
2 stops14h 39m
Frontier
Deal found 4/26![Frontier logo]()
$221
This Frontier deal was found by Cheapflights users on 4/27. 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 5/295:11 pm
ORD
- STL
1 stop6h 46m
Frontier
Sat 5/304:19 pm
STL
- ORD
1 stop6h 54m
Frontier
Deal found 4/27![Frontier logo]()
$222
Best flights from Indiana to St. LouisDiscover carefully curated flight deals from Indiana to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 1, 2026.
Discover carefully curated flight deals from Indiana to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 1, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 6/512:14 pm
IND
- STL
1 stop21h 41m
Frontier
Tue 6/96:31 pm
STL
- IND
1 stop15h 48m
Frontier
Deal found 4/30![Frontier logo]()
$215
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/197:00 am
ORD
- STL
2 stops9h 46m
Delta
Thu 5/219:13 am
STL
- ORD
1 stop7h 43m
Delta
Deal found 4/26![Delta logo]()
$223
This Southwest deal was found by Cheapflights users on 4/28. 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 6/211:35 am
MDW
- STL
2 stops6h 20m
Southwest
Wed 6/311:30 am
STL
- MDW
1 stop3h 35m
Southwest
Deal found 4/28![Southwest logo]()
$259
This United Airlines deal was found by Cheapflights users on 4/30. 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 6/96:33 pm
IND
- STL
1 stop3h 43m
United Airlines
Wed 6/106:00 am
STL
- IND
1 stop3h 28m
United Airlines
Deal found 4/30![United Airlines logo]()
$275
This American Airlines deal was found by Cheapflights users on 4/28. 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 5/267:47 pm
FWA
- STL
1 stop5h 12m
American Airlines
Tue 6/25:25 am
STL
- FWA
1 stop5h 35m
American Airlines
Deal found 4/28![American Airlines logo]()
$289
This Delta deal was found by Cheapflights users on 4/30. 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 6/126:35 am
ORD
- STL
1 stop5h 59m
Delta
Tue 6/167:08 am
STL
- ORD
1 stop5h 28m
Delta
Deal found 4/30![Delta logo]()
$257
This Southwest deal was found by Cheapflights users on 4/29. 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 9/152:20 pm
MDW
- STL
1 stop3h 35m
Southwest
Sat 9/197:50 am
STL
- MDW
2 stops5h 30m
Southwest
Deal found 4/29![Southwest logo]()
$262
This United Airlines deal was found by Cheapflights users on 4/27. 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 5/209:28 am
IND
- STL
1 stop4h 19m
United Airlines
Wed 6/246:00 am
STL
- IND
1 stop3h 28m
United Airlines
Deal found 4/27![United Airlines logo]()
$275
This American Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/273:22 pm
SDF
- STL
1 stop4h 38m
American Airlines
Mon 6/16:12 pm
STL
- SDF
1 stop5h 16m
American Airlines
Deal found 4/26![American Airlines logo]()
$293
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/229:22 am
MDW
- STL
1 stop3h 48m
Delta
Tue 5/267:05 am
STL
- MDW
1 stop4h 51m
Delta
Deal found 4/26![Delta logo]()
$268
This Southwest deal was found by Cheapflights users on 4/28. 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 5/281:30 pm
MDW
- STL
1 stop5h 20m
Southwest
Sun 5/312:10 pm
STL
- MDW
Nonstop1h 10m
Southwest
Deal found 4/28![Southwest logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 6/121:44 pm
IND
- STL
1 stop5h 34m
Frontier
Sun 6/147:03 pm
STL
- IND
1 stop16h 41m
Frontier
Deal found 4/29![Frontier logo]()
$303
This United Airlines deal was found by Cheapflights users on 4/29. 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 6/277:30 am
FWA
- STL
1 stop5h 37m
United Airlines
Tue 6/3010:20 am
STL
- FWA
1 stop4h 49m
United Airlines
Deal found 4/29![United Airlines logo]()
$289
This Delta deal was found by Cheapflights users on 4/27. 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 10/62:55 pm
DAY
- STL
1 stop6h 54m
Delta
Tue 10/133:42 pm
STL
- DAY
1 stop6h 32m
Delta
Deal found 4/27![Delta logo]()
$271
This Southwest deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/225:50 pm
MDW
- STL
1 stop5h 35m
Southwest
Tue 5/261:45 pm
STL
- MDW
Nonstop1h 10m
Southwest
Deal found 4/26![Southwest logo]()
$284
This United Airlines deal was found by Cheapflights users on 4/29. 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 6/31:16 pm
FWA
- STL
1 stop3h 30m
United Airlines
Sat 6/61:13 pm
STL
- FWA
1 stop3h 38m
United Airlines
Deal found 4/29![United Airlines logo]()
$289
This American Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/410:05 am
CVG
- STL
1 stop4h 48m
American Airlines
Tue 8/46:12 pm
STL
- CVG
1 stop4h 47m
American Airlines
Deal found 4/26![American Airlines logo]()
$323
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/266:15 pm
AZO
- STL
1 stop3h 54m
Delta
Tue 6/26:04 pm
STL
- AZO
1 stop4h 43m
Delta
Deal found 5/1![Delta logo]()
$278
This Southwest deal was found by Cheapflights users on 4/29. 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 6/311:35 am
MDW
- STL
2 stops6h 20m
Southwest
Thu 6/412:50 pm
STL
- MDW
1 stop4h 15m
Southwest
Deal found 4/29![Southwest logo]()
$289
This KAYAK deal was found by Cheapflights users on 4/29. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1810:25 am
ORD
- STL
Nonstop1h 22m
American Airlines
Wed 5/205:51 am
STL
- ORD
Nonstop1h 30m
American Airlines
Deal found 4/29![American Airlines logo]()
$332
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:15 pm
AZO
- STL
1 stop3h 54m
Delta
Mon 6/16:45 am
STL
- AZO
1 stop4h 05m
Delta
Deal found 5/1![Delta logo]()
$278
This United Airlines deal was found by Cheapflights users on 4/27. 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 6/136:33 pm
IND
- STL
1 stop3h 43m
United Airlines
Wed 6/176:00 am
STL
- IND
1 stop3h 28m
United Airlines
Deal found 4/27![United Airlines logo]()
$306
This Southwest deal was found by Cheapflights users on 4/27. 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 6/912:45 pm
IND
- STL
2 stops6h 40m
Southwest
Wed 6/102:20 pm
STL
- IND
1 stop8h 15m
Southwest
Deal found 4/27![Southwest logo]()
$298
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:15 pm
AZO
- STL
1 stop3h 54m
Delta
Sun 5/316:45 am
STL
- AZO
1 stop4h 05m
Delta
Deal found 5/1![Delta logo]()
$278
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/187:39 pm
IND
- STL
1 stop5h 05m
American Airlines
Sun 6/218:14 pm
STL
- IND
1 stop3h 38m
American Airlines
Deal found 5/1![American Airlines logo]()
$337
This United Airlines deal was found by Cheapflights users on 4/30. 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 5/158:15 pm
SBN
- STL
1 stop3h 35m
United Airlines
Tue 5/197:45 am
STL
- SBN
1 stop3h 46m
United Airlines
Deal found 4/30![United Airlines logo]()
$309
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/306:15 pm
AZO
- STL
1 stop3h 54m
Delta
Tue 6/210:19 am
STL
- AZO
1 stop6h 16m
Delta
Deal found 5/1![Delta logo]()
$278
This United Airlines deal was found by Cheapflights users on 4/27. 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 5/2211:40 am
FWA
- STL
1 stop5h 06m
United Airlines
Sun 5/2410:25 am
STL
- FWA
1 stop3h 29m
United Airlines
Deal found 4/27![United Airlines logo]()
$309
This American Airlines deal was found by Cheapflights users on 4/29. 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 5/222:36 pm
SDF
- STL
1 stop6h 54m
American Airlines
Wed 5/272:36 pm
STL
- SDF
1 stop6h 43m
American Airlines
Deal found 4/29![American Airlines logo]()
$345
This Southwest deal was found by Cheapflights users on 4/28. 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 6/306:35 pm
CVG
- STL
1 stop5h 25m
Southwest
Sun 7/56:00 am
STL
- CVG
2 stops6h 25m
Southwest
Deal found 4/28![Southwest logo]()
$316
Last-minute flights from Indiana to St. LouisDiscover last-minute flight deals from Indiana to St. Louis. Data last updated May 1, 2026 and is based on user searches.
Discover last-minute flight deals from Indiana to St. Louis. Data last updated May 1, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 4/27. 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 5/114:19 pm
STL
- CVG
1 stop19h 43m
Frontier
Deal found 4/27![Frontier logo]()
$222
This CheapOair deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/139:37 pm
ORD
- STL
1 stop21h 46m
Frontier
Fri 5/154:19 pm
STL
- ORD
1 stop6h 54m
Frontier
Deal found 4/26![Frontier logo]()
$233
This Frontier deal was found by Cheapflights users on 4/28. 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 5/148:40 pm
CVG
- STL
1 stop24h 43m
Frontier
Mon 5/184:19 pm
STL
- CVG
1 stop6h 36m
Frontier
Deal found 4/28![Frontier logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 5/1712:12 pm
CVG
- STL
1 stop21h 43m
Frontier
Mon 6/15:27 pm
STL
- CVG
1 stop16h 37m
Frontier
Deal found 4/27![Frontier logo]()
$210
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/197:00 am
ORD
- STL
2 stops9h 46m
Delta
Thu 5/219:13 am
STL
- ORD
1 stop7h 43m
Delta
Deal found 4/26![Delta logo]()
$223
This Expedia deal was found by Cheapflights users on 4/27. 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.
Sat 5/238:36 pm
CVG
- STL
1 stop23h 47m
Frontier
Mon 6/18:08 pm
STL
- CVG
1 stop22h 33m
Frontier
Deal found 4/27![Frontier logo]()
$205
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 5/2412:12 pm
CVG
- STL
1 stop21h 43m
Frontier
Mon 5/255:27 pm
STL
- CVG
1 stop16h 37m
Frontier
Deal found 4/27![Frontier logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 5/257:49 pm
CVG
- STL
1 stop22h 44m
Frontier
Mon 6/15:27 pm
STL
- CVG
1 stop16h 37m
Frontier
Deal found 4/27![Frontier logo]()
$187
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 5/2612:12 pm
CVG
- STL
1 stop21h 43m
Frontier
Tue 6/26:33 pm
STL
- CVG
1 stop16h 08m
Frontier
Deal found 4/28![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 5/277:00 am
CVG
- STL
1 stop17h 57m
Frontier
Wed 6/35:27 pm
STL
- CVG
1 stop16h 37m
Frontier
Deal found 4/29![Frontier logo]()
$214
This Frontier deal was found by Cheapflights users on 4/27. 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 5/295:11 pm
ORD
- STL
1 stop6h 46m
Frontier
Sat 5/304:19 pm
STL
- ORD
1 stop6h 54m
Frontier
Deal found 4/27![Frontier logo]()
$222
This Frontier deal was found by Cheapflights users on 4/28. 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 5/3112:12 pm
CVG
- STL
1 stop6h 21m
Frontier
Wed 6/34:19 pm
STL
- CVG
1 stop6h 19m
Frontier
Deal found 4/28![Frontier logo]()
$180
One-way flights from Indiana to St. LouisSearch for one-way flight options from Indiana to St. Louis. Find affordable one-way fares based on user searches. Data last updated May 1, 2026.
Search for one-way flight options from Indiana to St. Louis. Find affordable one-way fares based on user searches. Data last updated May 1, 2026.
This Southwest deal was found by Cheapflights users on 4/29. 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 5/208:55 pm
MDW
- STL
Nonstop1h 15m
Southwest
Deal found 4/29![Southwest logo]()
$69
This American Airlines deal was found by Cheapflights users on 4/30. 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 6/1711:00 pm
ORD
- STL
Nonstop1h 16m
American Airlines
Deal found 4/30![American Airlines logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 4/28. 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
Frontier
Deal found 4/28![Frontier logo]()
$70
This Frontier deal was found by Cheapflights users on 4/27. 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 5/2412:27 pm
MDW
- STL
1 stop5h 06m
Frontier
Deal found 4/27![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 6/1612:27 pm
MDW
- STL
1 stop20h 25m
Frontier
Deal found 4/29![Frontier logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 5/2912:14 pm
IND
- STL
1 stop21h 41m
Frontier
Deal found 4/29![Frontier logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 5/266:00 am
MDW
- STL
1 stop26h 55m
Frontier
Deal found 4/29![Frontier logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 5/266:55 am
ORD
- STL
1 stop26h 00m
Frontier
Deal found 4/29![Frontier logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/46:00 am
MDW
- STL
1 stop11h 33m
Frontier
Deal found 4/26![Frontier logo]()
$75
This Super.com deal was found by Cheapflights users on 4/29. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/209:37 pm
ORD
- STL
1 stop21h 46m
Frontier
Deal found 4/29![Frontier logo]()
$75
This Frontier deal was found by Cheapflights users on 4/28. 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 5/196:00 am
MDW
- STL
1 stop11h 33m
Frontier
Deal found 4/28![Frontier logo]()
$76
This Frontier deal was found by Cheapflights users on 4/28. 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 5/196:55 am
ORD
- STL
1 stop10h 38m
Frontier
Deal found 4/28![Frontier logo]()
$76
Find flight deals from Indiana to St. Louis
Keep the following information in mind while searching for Indiana to St. Louis flight deals. Data was last updated May 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $126 (Kiwi.com) |
One-way from | $69 (Southwest) |
Popular in | September |
Cheapest in | November |
Average price | $399 |
Cheapflights Fare Finder
Customize your flight search to find flights from Indiana 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 1, 2026.
Use the filters below to find and compare flights from Indiana to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
IndianapolisSt. Louis
IND - STL
INDSTL
Indianapolis
Fri 6/5
12:14 pm-8:55 am
1 stop21h 41m
Lambert-St Louis
Tue 6/9
6:31 pm-11:19 am
1 stop15h 48m
$215
ChicagoSt. Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
Tue 5/19
7:00 am-4:46 pm
2 stops9h 46m
Lambert-St Louis
Thu 5/21
9:13 am-4:56 pm
1 stop7h 43m
$223
ChicagoSt. Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
Fri 6/12
6:35 am-12:34 pm
1 stop5h 59m
Lambert-St Louis
Tue 6/16
7:08 am-12:36 pm
1 stop5h 28m
$257
ChicagoSt. Louis
MDW - STL
MDWSTL
Chicago Midway
Tue 6/2
11:35 am-5:55 pm
2 stops6h 20m
Lambert-St Louis
Wed 6/3
11:30 am-3:05 pm
1 stop3h 35m
$259
ChicagoSt. Louis
MDW - STL
MDWSTL
Chicago Midway
Tue 9/15
2:20 pm-5:55 pm
1 stop3h 35m
Lambert-St Louis
Sat 9/19
7:50 am-1:20 pm
2 stops5h 30m
$262
ChicagoSt. Louis
MDW - STL
MDWSTL
Chicago Midway
Fri 5/22
9:22 am-1:10 pm
1 stop3h 48m
Lambert-St Louis
Tue 5/26
7:05 am-11:56 am
1 stop4h 51m
$268
DaytonSt. Louis
DAY - STL
DAYSTL
Dayton
Tue 10/6
2:55 pm-8:49 pm
1 stop6h 54m
Lambert-St Louis
Tue 10/13
3:42 pm-11:14 pm
1 stop6h 32m
$271
ChicagoSt. Louis
MDW - STL
MDWSTL
Chicago Midway
Thu 5/28
1:30 pm-6:50 pm
1 stop5h 20m
Lambert-St Louis
Sun 5/31
2:10 pm-3:20 pm
Nonstop1h 10m
$274
IndianapolisSt. Louis
IND - STL
INDSTL
Indianapolis
Tue 6/9
6:33 pm-9:16 pm
1 stop3h 43m
Lambert-St Louis
Wed 6/10
6:00 am-10:28 am
1 stop3h 28m
$275
IndianapolisSt. Louis
IND - STL
INDSTL
Indianapolis
Wed 5/20
9:28 am-12:47 pm
1 stop4h 19m
Lambert-St Louis
Wed 6/24
6:00 am-10:28 am
1 stop3h 28m
$275
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Indiana to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Indiana with our price prediction graph.
IND-STL
ORD-STL
MDW-STL
FWA-STL
SDF-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 Indiana to St. Louis
USIN-STL
IND-STL
ORD-STL
MDW-STL
FWA-STL
What is the cheapest month to book a flight from Indiana to St. Louis?
Currently, November is the cheapest month in which you can book a flight from Indiana to St. Louis (average of $156). Flying from Indiana to St. Louis in October is currently the most expensive (average of $275). 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 Indiana to St. Louis?
Related info for your journey
Find useful and relevant information for your journey from Indiana 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
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for Indiana to St. Louis
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Complete your trip
Complete your trip to St. Louis by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from Indiana to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Indiana and St. Louis flights
Browse other Indiana and St. Louis flight options. Last updated on May 1, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 1, 2026.
Indiana to St. Louis flights
Consider these flights traveling from Indiana to St. Louis.
Top 3 airlines flying from Indiana to St. Louis
Discover the top 3 airlines that operate flights from Indiana 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 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$218 | Average$258 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$228 | Average$268 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$228 | Average$353 | FlexibilityNo cancel fee | On-time69% |