$84+ Cheap flights from Indianapolis to St. Louis (IND - 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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
IND — STL
Apr 9 — Apr 161
Round-trip
1 adult, Economy
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Find cheap flights from Indianapolis 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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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 Indianapolis to St. Louis
Cheapest
Best
Last-minute
One-way
Cheapest flights from Indianapolis to St. LouisExplore the most affordable flight options available from Indianapolis to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 10, 2026.
Explore the most affordable flight options available from Indianapolis to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 10, 2026.
This CheapOair deal was found by Cheapflights users on 3/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/127:09 pm
IND
- STL
1 stop13h 42m
Frontier
Thu 4/169:55 pm
STL
- IND
1 stop14h 02m
Frontier
Deal found 3/6![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” 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 4/1312:18 pm
IND
- STL
2 stops12h 07m
Frontier
Wed 4/158:23 pm
STL
- IND
1 stop14h 09m
Frontier
Deal found 3/9![Frontier logo]()
$185
This CheapOair deal was found by Cheapflights users on 3/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/108:30 pm
IND
- STL
1 stop14h 18m
Frontier
Mon 4/134:59 pm
STL
- IND
1 stop17h 12m
Frontier
Deal found 3/6![Frontier logo]()
$226
This Kiwi.com deal was found by Cheapflights users on 3/6. 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.
Fri 5/112:34 pm
IND
- STL
2 stops11h 45m
Frontier
Sat 5/28:23 pm
STL
- IND
1 stop13h 54m
Frontier
Deal found 3/6![Frontier logo]()
$233
This Kiwi.com deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1612:17 pm
IND
- STL
1 stop19h 33m
Frontier
Sun 4/194:59 pm
STL
- IND
2 stops16h 35m
Frontier
Deal found 3/8![Frontier logo]()
$241
This Kiwi.com deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 4/2412:34 pm
IND
- STL
1 stop19h 16m
Frontier
Sun 4/264:59 pm
STL
- IND
2 stops16h 35m
Frontier
Deal found 3/7![Frontier logo]()
$250
This CheapOair deal was found by Cheapflights users on 3/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/38:30 pm
IND
- STL
1 stop14h 18m
Frontier
Fri 4/108:16 pm
STL
- IND
1 stop22h 16m
Frontier
Deal found 3/6![Frontier logo]()
$261
This American Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” 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 4/78:53 pm
IND
- STL
1 stop3h 53m
American Airlines
Wed 4/87:05 am
STL
- IND
1 stop3h 41m
American Airlines
Deal found 3/10![American Airlines logo]()
$263
Best flights from Indianapolis to St. LouisDiscover carefully curated flight deals from Indianapolis to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 10, 2026.
Discover carefully curated flight deals from Indianapolis to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 10, 2026.
This CheapOair deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” 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.
Mon 4/135:30 pm
IND
- STL
1 stop6h 55m
Frontier
Wed 4/154:59 pm
STL
- IND
1 stop16h 28m
Frontier
Deal found 3/9![Frontier logo]()
$171
This Southwest deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” 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 4/252:40 pm
IND
- STL
1 stop6h 05m
Southwest
Mon 4/275:40 am
STL
- IND
1 stop6h 55m
Southwest
Deal found 3/10![Southwest logo]()
$277
This United Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 4/46:10 pm
IND
- STL
1 stop4h 03m
United Airlines
Mon 4/68:15 pm
STL
- IND
1 stop3h 39m
United Airlines
Deal found 3/7![United Airlines logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” 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 3/255:08 pm
IND
- STL
1 stop7h 11m
Multiple Airlines
Sun 3/294:51 pm
STL
- IND
2 stops17h 31m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$332
This Kiwi.com deal was found by Cheapflights users on 3/6. 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.
Fri 5/112:34 pm
IND
- STL
2 stops11h 45m
Frontier
Sat 5/28:23 pm
STL
- IND
1 stop13h 54m
Frontier
Deal found 3/6![Frontier logo]()
$233
This Southwest deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” 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 4/65:50 pm
IND
- STL
1 stop7h 15m
Southwest
Mon 4/132:25 pm
STL
- IND
1 stop7h 50m
Southwest
Deal found 3/9![Southwest logo]()
$279
This CheapOair deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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.
Fri 4/38:30 pm
IND
- STL
1 stop14h 18m
Frontier
Fri 4/108:16 pm
STL
- IND
1 stop22h 16m
Frontier
Deal found 3/7![Frontier logo]()
$261
This Southwest deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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 5/47:35 pm
IND
- STL
1 stop5h 20m
Southwest
Tue 5/58:35 am
STL
- IND
2 stops7h 00m
Southwest
Deal found 3/8![Southwest logo]()
$282
This United Airlines deal was found by Cheapflights users on 3/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/56:00 am
IND
- STL
1 stop3h 41m
United Airlines
Mon 6/159:23 am
STL
- IND
1 stop6h 07m
United Airlines
Deal found 3/6![United Airlines logo]()
$317
This Southwest deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” 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 4/138:15 am
IND
- STL
2 stops8h 15m
Southwest
Wed 4/152:30 pm
STL
- IND
2 stops7h 20m
Southwest
Deal found 3/9![Southwest logo]()
$301
Last-minute flights from Indianapolis to St. LouisDiscover last-minute flight deals from Indianapolis to St. Louis. Data last updated March 10, 2026 and is based on user searches.
Discover last-minute flight deals from Indianapolis to St. Louis. Data last updated March 10, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 3/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/38:30 pm
IND
- STL
1 stop14h 18m
Frontier
Fri 4/108:16 pm
STL
- IND
1 stop22h 16m
Frontier
Deal found 3/6![Frontier logo]()
$261
This American Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” 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 4/78:53 pm
IND
- STL
1 stop3h 53m
American Airlines
Wed 4/87:05 am
STL
- IND
1 stop3h 41m
American Airlines
Deal found 3/10![American Airlines logo]()
$263
This CheapOair deal was found by Cheapflights users on 3/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/108:30 pm
IND
- STL
1 stop14h 18m
Frontier
Mon 4/134:59 pm
STL
- IND
1 stop17h 12m
Frontier
Deal found 3/6![Frontier logo]()
$226
This CheapOair deal was found by Cheapflights users on 3/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/127:09 pm
IND
- STL
1 stop13h 42m
Frontier
Thu 4/169:55 pm
STL
- IND
1 stop14h 02m
Frontier
Deal found 3/6![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” 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 4/1312:18 pm
IND
- STL
2 stops12h 07m
Frontier
Wed 4/158:23 pm
STL
- IND
1 stop14h 09m
Frontier
Deal found 3/9![Frontier logo]()
$185
This Kiwi.com deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1612:17 pm
IND
- STL
1 stop19h 33m
Frontier
Sun 4/194:59 pm
STL
- IND
2 stops16h 35m
Frontier
Deal found 3/8![Frontier logo]()
$241
This Kiwi.com deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 4/2412:34 pm
IND
- STL
1 stop19h 16m
Frontier
Sun 4/264:59 pm
STL
- IND
2 stops16h 35m
Frontier
Deal found 3/7![Frontier logo]()
$250
This Kiwi.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” 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 4/2812:07 pm
IND
- STL
2 stops19h 43m
Frontier
Thu 4/3011:21 am
STL
- IND
1 stop22h 11m
Frontier
Deal found 3/9![Frontier logo]()
$265
This Delta deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” 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 4/285:58 pm
IND
- STL
1 stop3h 46m
Delta
Thu 4/306:48 am
STL
- IND
1 stop5h 40m
Delta
Deal found 3/9![Delta logo]()
$271
One-way flights from Indianapolis to St. LouisSearch for one-way flight options from Indianapolis to St. Louis. Find affordable one-way fares based on user searches. Data last updated March 10, 2026.
Search for one-way flight options from Indianapolis to St. Louis. Find affordable one-way fares based on user searches. Data last updated March 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” 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 5/1012:12 pm
IND
- STL
1 stop19h 38m
Frontier
Deal found 3/10![Frontier logo]()
$84
This Frontier deal was found by Cheapflights users on 3/5. 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 5/512:07 pm
IND
- STL
1 stop12h 12m
Frontier
Deal found 3/5![Frontier logo]()
$86
This CheapOair deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” 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.
Fri 5/18:46 pm
IND
- STL
1 stop23h 46m
Frontier
Deal found 3/9![Frontier logo]()
$92
This Frontier deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” 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 5/1212:07 pm
IND
- STL
1 stop12h 12m
Frontier
Deal found 3/10![Frontier logo]()
$96
This Kiwi.com deal was found by Cheapflights users on 3/5. 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.
Fri 5/88:33 pm
IND
- STL
1 stop23h 39m
Frontier
Deal found 3/5![Frontier logo]()
$99
This CheapOair deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” 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.
Thu 4/98:27 pm
IND
- STL
1 stop14h 21m
Frontier
Deal found 3/10![Frontier logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 3/5. 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.
Thu 5/712:12 pm
IND
- STL
1 stop19h 38m
Frontier
Deal found 3/5![Frontier logo]()
$103
This Kiwi.com deal was found by Cheapflights users on 3/6. 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 4/65:08 pm
IND
- STL
2 stops18h 22m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$107
This CheapOair deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” 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.
Tue 3/178:33 pm
IND
- STL
1 stop14h 16m
Frontier
Deal found 3/9![Frontier logo]()
$113
This Kiwi.com deal was found by Cheapflights users on 3/6. 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 4/612:18 pm
IND
- STL
1 stop23h 12m
Frontier
Deal found 3/6![Frontier logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 3/6. 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.
Wed 4/86:00 am
IND
- STL
2 stops36h 34m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$118
Find flight deals from Indianapolis to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from Indianapolis (IND) 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 March 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $171 (CheapOair) |
One-way from | $84 (Kiwi.com) |
Popular in | September |
Cheapest in | November |
Average price | $282 |
Cheapflights Fare Finder
Customize your flight search to find flights from Indianapolis 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 March 10, 2026.
Use the filters below to find and compare flights from Indianapolis to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
IndianapolisSt. Louis
IND - STL
INDSTL
Indianapolis
Mon 4/13
5:30 pm-11:25 pm
1 stop6h 55m
Lambert-St Louis
Wed 4/15
4:59 pm-10:27 am
1 stop16h 28m
$171
IndianapolisSt. Louis
IND - STL
INDSTL
Indianapolis
Fri 5/1
12:34 pm-11:19 pm
2 stops11h 45m
Lambert-St Louis
Sat 5/2
8:23 pm-11:17 am
1 stop13h 54m
$233
IndianapolisSt. Louis
IND - STL
INDSTL
Indianapolis
Fri 4/3
8:30 pm-9:48 am
1 stop14h 18m
Lambert-St Louis
Fri 4/10
8:16 pm-7:32 pm
1 stop22h 16m
$261
IndianapolisSt. Louis
IND - STL
INDSTL
Indianapolis
Sat 4/25
2:40 pm-7:45 pm
1 stop6h 05m
Lambert-St Louis
Mon 4/27
5:40 am-1:35 pm
1 stop6h 55m
$277
Quickest round-trip
IndianapolisSt. Louis
IND - STL
INDSTL
Indianapolis
Sat 4/4
6:10 pm-9:13 pm
1 stop4h 03m
Lambert-St Louis
Mon 4/6
8:15 pm-12:54 am
1 stop3h 39m
$279
IndianapolisSt. Louis
IND - STL
INDSTL
Indianapolis
Mon 4/6
5:50 pm-12:05 am
1 stop7h 15m
Lambert-St Louis
Mon 4/13
2:25 pm-11:15 pm
1 stop7h 50m
$279
IndianapolisSt. Louis
IND - STL
INDSTL
Indianapolis
Mon 5/4
7:35 pm-11:55 pm
1 stop5h 20m
Lambert-St Louis
Tue 5/5
8:35 am-4:35 pm
2 stops7h 00m
$282
IndianapolisSt. Louis
IND - STL
INDSTL
Indianapolis
Mon 4/13
8:15 am-3:30 pm
2 stops8h 15m
Lambert-St Louis
Wed 4/15
2:30 pm-10:50 pm
2 stops7h 20m
$301
IndianapolisSt. Louis
IND - STL
INDSTL
Indianapolis
Fri 6/5
6:00 am-8:41 am
1 stop3h 41m
Lambert-St Louis
Mon 6/15
9:23 am-4:30 pm
1 stop6h 07m
$317
IndianapolisSt. Louis
IND - STL
INDSTL
Indianapolis
Wed 3/25
5:08 pm-11:19 pm
1 stop7h 11m
Lambert-St Louis
Sun 3/29
4:51 pm-11:22 am
2 stops17h 31m
$332
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Indianapolis 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 Indianapolis to St. Louis in March.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Indianapolis-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Indianapolis-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Indianapolis-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Indianapolis-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 Indianapolis-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 Indianapolis to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Indianapolis with our price prediction graph.
IND-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 Indianapolis 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 March 10, 2026.
Peruse reviews from past customers who have flown with American Airlines from Indianapolis to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
7.9
Entertainment
6.9
Food
6.4
Overall
7.1
Comfort
7.2
Boarding
7.5
Reviews
1 / 20
2.0
MediocreAnonymous,Mar 2026
MIA - SFO
Crew
7.9
Entertainment
6.9
Food
6.4
Overall
7.1
Comfort
7.2
Boarding
7.5
Reviews
1 / 20
2.0
MediocreAnonymous,Mar 2026
MIA - SFO
Related info for your journey
Find useful and relevant information for your journey from Indianapolis 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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Alternative routes for Indianapolis to St. Louis
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Indianapolis and St. Louis flights
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Top airline flying from Indianapolis to St. Louis
Discover the top airline that operate flights from Indianapolis 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 March 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$196 | Average$407 | FlexibilityNo cancel fee | On-time71% |