$101+ Cheap flights from Indianapolis to St. Louis (IND - STL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
IND — STL
Oct 16 — Oct 231
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 September 16, 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 September 16, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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 10/266:00 am -
1 stop18h 13m
Fri 10/306:44 pm -
1 stop17h 18m
Deal found 9/16![Multiple Airlines logo]()
$196
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:41 am -
1 stop4h 08m
Wed 10/216:05 pm -
1 stop5h 00m
Deal found 9/16![Delta logo]()
$227
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” 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 11/32:10 pm -
2 stops6h 15m
Tue 11/178:25 am -
1 stop5h 40m
Deal found 9/15![Southwest logo]()
$232
This Frontier deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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 11/511:25 am -
1 stop12h 51m
Sun 11/812:14 pm -
1 stop6h 48m
Deal found 9/16![Frontier logo]()
$233
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” 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 10/204:59 pm -
1 stop4h 52m
Thu 10/226:47 am -
1 stop3h 45m
Deal found 9/14![Delta logo]()
$242
This Southwest deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” 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 10/53:00 pm -
1 stop5h 05m
Wed 10/74:30 pm -
1 stop3h 15m
Deal found 9/13![Southwest logo]()
$256
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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 10/237:25 pm -
1 stop5h 15m
Wed 10/282:25 pm -
1 stop7h 15m
Deal found 9/16![Southwest logo]()
$257
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” 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 10/296:45 pm -
1 stop6h 05m
Thu 11/54:40 pm -
2 stops6h 40m
Deal found 9/14![Southwest logo]()
$263
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” 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 10/148:10 am -
1 stop5h 03m
Sat 10/176:00 am -
1 stop3h 56m
Deal found 9/14![United Airlines logo]()
$270
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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 10/239:06 pm -
1 stop27h 07m
Wed 10/286:44 pm -
2 stops14h 46m
Deal found 9/16![Frontier logo]()
$289
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 September 16, 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 September 16, 2026.
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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 2/96:35 am -
1 stop6h 45m
Fri 2/125:40 am -
1 stop6h 00m
Deal found 9/16![Southwest logo]()
$257
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” 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 10/148:10 am -
1 stop5h 03m
Sat 10/176:00 am -
1 stop3h 56m
Deal found 9/14![United Airlines logo]()
$270
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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 10/237:25 pm -
1 stop5h 15m
Wed 10/282:25 pm -
1 stop7h 15m
Deal found 9/16![Southwest logo]()
$257
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” 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 10/296:45 pm -
1 stop6h 05m
Thu 11/54:40 pm -
2 stops6h 40m
Deal found 9/14![Southwest logo]()
$263
This United Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” 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 11/2110:46 am -
1 stop4h 48m
Sat 11/287:30 am -
1 stop4h 04m
Deal found 9/13![United Airlines logo]()
$339
This Southwest deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” 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 10/56:20 am -
2 stops7h 25m
Wed 10/71:25 pm -
2 stops7h 30m
Deal found 9/13![Southwest logo]()
$300
This United Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” 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 12/259:05 am -
1 stop6h 13m
Sat 12/266:58 pm -
1 stop4h 01m
Deal found 9/13![United Airlines logo]()
$339
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” 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 11/126:50 pm -
1 stop5h 25m
Sun 11/154:40 pm -
2 stops6h 40m
Deal found 9/15![Southwest logo]()
$307
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/296:00 am -
1 stop3h 55m
Fri 10/307:30 am -
1 stop4h 14m
Deal found 9/14![United Airlines logo]()
$342
Last-minute flights from Indianapolis to St. LouisDiscover last-minute flight deals from Indianapolis to St. Louis. Data last updated September 16, 2026 and is based on user searches.
Discover last-minute flight deals from Indianapolis to St. Louis. Data last updated September 16, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” 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 10/53:00 pm -
1 stop5h 05m
Wed 10/74:30 pm -
1 stop3h 15m
Deal found 9/13![Southwest logo]()
$256
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:41 am -
1 stop4h 08m
Wed 10/216:05 pm -
1 stop5h 00m
Deal found 9/16![Delta logo]()
$227
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” 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 10/148:10 am -
1 stop5h 03m
Sat 10/176:00 am -
1 stop3h 56m
Deal found 9/14![United Airlines logo]()
$270
This Mytrip deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:59 pm -
2 stops28h 14m
Wed 10/216:35 pm -
2 stops24h 36m
Deal found 9/16![Frontier logo]()
$291
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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 10/145:30 am -
1 stop7h 05m
Wed 10/211:25 pm -
2 stops7h 30m
Deal found 9/16![Southwest logo]()
$292
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” 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 10/204:59 pm -
1 stop4h 52m
Thu 10/226:47 am -
1 stop3h 45m
Deal found 9/14![Delta logo]()
$242
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” 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 10/2012:05 pm -
1 stop6h 40m
Thu 10/225:25 am -
2 stops7h 45m
Deal found 9/14![Southwest logo]()
$293
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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 10/237:25 pm -
1 stop5h 15m
Wed 10/282:25 pm -
1 stop7h 15m
Deal found 9/16![Southwest logo]()
$257
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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 10/239:06 pm -
1 stop27h 07m
Wed 10/286:44 pm -
2 stops14h 46m
Deal found 9/16![Frontier logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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 10/266:00 am -
1 stop18h 13m
Fri 10/306:44 pm -
1 stop17h 18m
Deal found 9/16![Multiple Airlines logo]()
$196
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” 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 10/296:45 pm -
1 stop6h 05m
Thu 11/54:40 pm -
2 stops6h 40m
Deal found 9/14![Southwest logo]()
$263
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 September 16, 2026.
Search for one-way flight options from Indianapolis to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 16, 2026.
This CheapOair deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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 10/274:03 pm -
1 stop24h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$101
This Frontier deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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 11/1311:25 am -
1 stop12h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$128
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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 11/125:30 pm -
1 stop6h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Southwest logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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 11/123:58 pm -
2 stops26h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” 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 10/127:59 pm -
2 stops44h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Frontier logo]()
$154
This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” 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 10/2511:21 am -
1 stop12h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$169
This Trip.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:41 am -
1 stop4h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Delta logo]()
$170
This CheapOair deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” 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 10/18:56 pm -
1 stop23h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Frontier logo]()
$171
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/255:00 pm -
2 stops7h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Southwest logo]()
$179
This Frontier deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” 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 9/2410:26 am -
1 stop8h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Frontier logo]()
$180
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 September 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $227 (American Airlines) |
One-way from | $101 (CheapOair) |
Popular in | November |
Cheapest in | January |
Average price | $422 |
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 7,457,451 searches. Data last updated September 16, 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 Indianapolis - STL Lambert-St Louis
INDSTL
Indianapolis
Thu 11/12
5:30 pm-10:50 pm
1 stop6h 20m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$129
IndianapolisSt. Louis
IND Indianapolis - STL Lambert-St Louis
INDSTL
Indianapolis
Fri 11/13
7:52 pm-11:16 pm
2 stops28h 24m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$144
IndianapolisSt. Louis
IND Indianapolis - STL Lambert-St Louis
INDSTL
Indianapolis
Sun 11/8
6:41 am-9:49 am
1 stop4h 08m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$170
IndianapolisSt. Louis
IND Indianapolis - STL Lambert-St Louis
INDSTL
Indianapolis
Sun 10/25
5:00 pm-11:55 pm
2 stops7h 55m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$179
IndianapolisSt. Louis
IND Indianapolis - STL Lambert-St Louis
INDSTL
Indianapolis
Mon 10/12
3:00 pm-7:05 pm
1 stop5h 05m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$184
IndianapolisSt. Louis
IND Indianapolis - STL Lambert-St Louis
INDSTL
Indianapolis
Thu 10/1
10:26 am-5:54 pm
1 stop8h 28m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$215
Quickest round-trip
IndianapolisSt. Louis
IND Indianapolis - STL Lambert-St Louis
INDSTL
Indianapolis
Thu 10/1
10:24 am-1:06 pm
1 stop3h 42m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$234
IndianapolisSt. Louis
IND Indianapolis - STL Lambert-St Louis
INDSTL
Indianapolis
Fri 11/13
8:00 am-1:23 pm
1 stop6h 23m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$249
IndianapolisSt. Louis
IND Indianapolis - STL Lambert-St Louis
INDSTL
Indianapolis
Tue 2/9
6:35 am-12:20 pm
1 stop6h 45m
Lambert-St Louis
Fri 2/12
5:40 am-12:40 pm
1 stop6h 00m
$257
IndianapolisSt. Louis
IND Indianapolis - STL Lambert-St Louis
INDSTL
Indianapolis
Fri 10/23
7:25 pm-11:40 pm
1 stop5h 15m
Lambert-St Louis
Wed 10/28
2:25 pm-10:40 pm
1 stop7h 15m
$257
Showing 1-10 of 19 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 September.
| 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.
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 September 16, 2026.
Peruse reviews from past customers who have flown with United 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.
Comfort
7.3
Overall
7.4
Boarding
7.7
Crew
8.1
Food
6.7
Entertainment
7.1
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Comfort
7.3
Overall
7.4
Boarding
7.7
Crew
8.1
Food
6.7
Entertainment
7.1
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
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 locationsFairview Heights
O'Fallon
Fenton
Swansea
Eureka
Maryland Heights
Collinsville
Wentzville
Edwardsville
Glencoe
Chesterfield
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Indianapolis and St. Louis flights
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Browse through other flights departing from Indianapolis. Flights are based on user searches made on Cheapflights and were last updated on September 16, 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 September 16, 2026.
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 7,457,451 searches. Data last updated September 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$265 | Average$386 | FlexibilityNo cancel fee | On-time69% |