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$72+ Cheap flights from St. Louis to Indianapolis (STL - IND)

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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
STL — IND
Oct 14 — Oct 211
Tue 10/14
Tue 10/21
1 adult, Economy
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Cheap flight deals from St. Louis to Indianapolis

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Indianapolis (IND). 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 14, 2025.

Round-trip from

$197
(Delta)

One-way from

$72
(Priceline)

Popular in

March

Cheapest in

April

Average price

$258
From Lambert-St Louis to Indianapolis
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One-way flight from Lambert-St Louis to Indianapolis
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Highest demand for flights based on searches. 7% potential increase in price ($28 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from St. Louis to Indianapolis

Cheapest flights from St. Louis to Indianapolis
Explore the most affordable flight options available from St. Louis to Indianapolis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 14, 2025.

This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/228:30 amSTL - IND
1 stop4h 23mAmerican Airlines
Sat 10/2512:46 pmIND - STL
1 stop6h 25mAmerican Airlines
Deal found 9/12$183
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/26:05 amSTL - IND
1 stop8h 18mAmerican Airlines
Wed 10/87:25 pmIND - STL
1 stop5h 29mAmerican Airlines
Deal found 9/12$218
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/27:55 pmSTL - IND
1 stop23h 09mMultiple Airlines
Wed 10/86:20 pmIND - STL
2 stops16h 02mMultiple Airlines
Deal found 9/12$228
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/246:42 pmSTL - IND
1 stop13h 38mMultiple Airlines
Mon 10/278:51 pmIND - STL
1 stop13h 16mMultiple Airlines
Deal found 9/12$230
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/27:55 pmSTL - IND
2 stops12h 52mFrontier
Wed 10/85:24 pmIND - STL
2 stops16h 58mFrontier
Deal found 9/12$242
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/267:55 pmSTL - IND
1 stop19h 19mFrontier
Sun 9/288:54 pmIND - STL
1 stop13h 12mFrontier
Deal found 9/13$250
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/191:57 pmSTL - IND
1 stop18h 21mMultiple Airlines
Sun 9/218:54 pmIND - STL
2 stops17h 08mMultiple Airlines
Deal found 9/12$255
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/46:00 amSTL - IND
1 stop5h 15mAmerican Airlines
Fri 11/74:40 pmIND - STL
1 stop7h 27mAmerican Airlines
Deal found 9/13$258
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 10/2710:18 amSTL - IND
2 stops32h 25mMultiple Airlines
Mon 11/38:39 pmIND - STL
1 stop13h 28mMultiple Airlines
Deal found 9/11$261

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Indianapolis 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 September 14, 2025.
Use the filters below to find and compare flights from St. Louis to Indianapolis that are best for you.

Fly from

St. Louis

Fly to

Indianapolis

Route

Depart

Return

Price

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Wed 10/22

8:30 am-1:53 pm

1 stop4h 23m

Indianapolis

Sat 10/25

12:46 pm-6:11 pm

1 stop6h 25m

$183

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 10/2

7:55 pm-8:04 pm

1 stop23h 09m

Indianapolis

Wed 10/8

6:20 pm-9:22 am

2 stops16h 02m

$228

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 10/2

7:55 pm-9:47 am

2 stops12h 52m

Indianapolis

Wed 10/8

5:24 pm-9:22 am

2 stops16h 58m

$242

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Wed 10/22

7:52 pm-1:51 pm

2 stops16h 59m

Indianapolis

Sat 10/25

10:15 am-6:10 pm

1 stop8h 55m

$250

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Fri 9/26

9:35 pm-4:14 pm

2 stops17h 39m

Indianapolis

Sun 9/28

8:54 pm-9:06 am

1 stop13h 12m

$251

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Fri 10/24

6:42 pm-9:20 am

1 stop13h 38m

Indianapolis

Mon 10/27

3:34 pm-9:07 am

2 stops18h 33m

$252

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 10/2

7:22 am-1:08 pm

1 stop4h 46m

Indianapolis

Thu 10/2

7:25 pm-11:49 pm

1 stop5h 24m

$255

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Fri 9/19

1:57 pm-9:18 am

1 stop18h 21m

Indianapolis

Sun 9/21

8:54 pm-1:02 pm

2 stops17h 08m

$255

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Tue 11/4

6:00 am-12:15 pm

1 stop5h 15m

Indianapolis

Fri 11/7

4:40 pm-11:07 pm

1 stop7h 27m

$258

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Mon 10/27

10:18 am-7:43 pm

2 stops32h 25m

Indianapolis

Mon 11/3

8:39 pm-9:07 am

1 stop13h 28m

$261

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 17 results
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Best time to book a flight from St. Louis to Indianapolis

Have a flexible travel schedule? Discover the best time to fly to Indianapolis from St. Louis with our price prediction graph.
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 St. Louis to Indianapolis

What is the cheapest month to book a flight from St. Louis to Indianapolis?

Currently, August is the cheapest month in which you can book a flight from St. Louis to Indianapolis (average of $286). Flying from St. Louis to Indianapolis in March is currently the most expensive (average of $360). 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.

What is the cheapest time of day to fly from STL to IND?

Find hourly flight availability from St. Louis to Indianapolis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 14, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 81% on flights from St. Louis to Indianapolis by exploring options for tickets at noon.

Reviews of airlines servicing Indianapolis

Get insights into the airlines that provide service to Indianapolis. 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 Indianapolis. Reviews last updated September 14, 2025.
See what other customers who have flown with Delta and American Airlines from St. Louis to Indianapolis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,956 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,956 reviews
Delta
8.0
Very good
7,956 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,956 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Indianapolis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from St. Louis to Indianapolis?

    American Airlines and Frontier can get you from St. Louis to Indianapolis in just under 4h 23m. Your travel time can differ by up to 8h 29m. The distance between St. Louis and Indianapolis is about 228 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from St. Louis to Indianapolis round-trip?

    Flying on American Airlines is currently your cheapest option to Indianapolis, with prices starting at $226. Another option worth looking into is Delta, starting at $234 round trip. American Airlines is 36% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from St. Louis to Indianapolis that include hotel bookings?

    Yes. In addition to deals on St. Louis to Indianapolis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Indianapolis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Indianapolis.

  • Can I find deals for business class flights from St. Louis to Indianapolis?

    Yes. Cheapflights offers flight deals from St. Louis to Indianapolis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Indianapolis?

    Currently, August is the cheapest month in which you can book a flight from St. Louis to Indianapolis (average of $286). Flying from St. Louis to Indianapolis in March is currently the most expensive (average of $360). 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.

See more FAQs

Traveling to a place near Indianapolis?

Book flights to Indianapolis if you plan to visit one of these locations
Muncie
Terre Haute
Noblesville
Fishers
Anderson
Kokomo
Greenwood
Bloomington
Franklin
Plainfield
Carmel
Crawfordsville
Speedway

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for St. Louis to Indianapolis

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from St. Louis to Indianapolis

Discover the top 2 airlines that operate flights from St. Louis to Indianapolis. 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 September 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$226Average$294FlexibilityNo cancel feeOn-time71%
DeltaCheapest$234Average$287FlexibilityNo cancel feeOn-timeN/A

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