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$80+ 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 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
STL — IND
Apr 11 — Apr 181
Sat 4/11
Sat 4/18
1 adult, Economy
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Cheap 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 March 12, 2026.

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.
Wed 4/158:23 pm
STL
-
IND
1 stop14h 09m
Frontier
Sun 4/1912:12 pm
IND
-
STL
1 stop19h 38m
Frontier
Deal found 3/8$162
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/138:13 pm
STL
-
IND
1 stop14h 04m
Frontier
Fri 5/1512:12 pm
IND
-
STL
1 stop19h 38m
Frontier
Deal found 3/9$181
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 4/1611:25 am
STL
-
IND
1 stop22h 07m
Frontier
Sun 4/1912:12 pm
IND
-
STL
1 stop19h 38m
Frontier
Deal found 3/8$199
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 4/2311:25 am
STL
-
IND
1 stop22h 07m
Frontier
Thu 4/3012:17 pm
IND
-
STL
1 stop19h 33m
Frontier
Deal found 3/8$236
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.
Tue 4/144:59 pm
STL
-
IND
1 stop17h 12m
Frontier
Sun 4/1912:12 pm
IND
-
STL
1 stop19h 38m
Frontier
Deal found 3/8$237
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.
Fri 4/244:59 pm
STL
-
IND
1 stop15h 50m
Frontier
Fri 5/18:46 pm
IND
-
STL
1 stop23h 46m
Frontier
Deal found 3/10$245
This Mytrip deal was found by Cheapflights users on 3/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/254:59 pm
STL
-
IND
1 stop13h 39m
Frontier
Sat 5/210:44 am
IND
-
STL
1 stop13h 35m
Frontier
Deal found 3/11$247
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.
Thu 4/96:29 pm
STL
-
IND
1 stop15h 54m
Frontier
Sun 4/127:09 pm
IND
-
STL
1 stop13h 42m
Frontier
Deal found 3/10$250
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.
Tue 4/144:59 pm
STL
-
IND
1 stop17h 12m
Frontier
Fri 4/178:46 pm
IND
-
STL
1 stop23h 46m
Frontier
Deal found 3/8$251

Find 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 March 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$162
(Kiwi.com)

One-way from

$80
(Frontier)

Popular in

January

Cheapest in

August

Average price

$647
Provider with most accurate pricing for Lambert-St Louis-Indianapolis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Indianapolis flights.
Search Deals
From Lambert-St Louis to Indianapolis
Search Deals
One-way flight from Lambert-St Louis to Indianapolis
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($82 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 March 12, 2026.
Use the filters below to find and compare flights from St. Louis to Indianapolis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Fri 4/24

8:23 pm-7:38 am

2 stops34h 15m

Indianapolis

Fri 5/1

8:46 pm-7:32 pm

1 stop23h 46m

$256

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Tue 4/14

7:05 am-1:10 pm

1 stop5h 05m

Indianapolis

Thu 4/16

5:55 am-8:24 am

1 stop3h 29m

$271

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Tue 4/21

10:50 am-3:16 pm

1 stop3h 26m

Indianapolis

Tue 4/28

8:00 am-1:05 pm

1 stop6h 05m

$275

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Mon 4/13

5:59 pm-12:07 am

1 stop5h 08m

Indianapolis

Wed 4/15

3:56 pm-8:44 pm

1 stop5h 48m

$277
Quickest round-trip

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Tue 4/14

10:50 am-3:16 pm

1 stop3h 26m

Indianapolis

Thu 4/16

6:13 am-9:42 am

1 stop4h 29m

$277

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Mon 4/20

5:59 pm-12:07 am

1 stop5h 08m

Indianapolis

Thu 4/23

6:13 am-9:42 am

1 stop4h 29m

$279

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sat 4/25

2:05 pm-9:00 pm

2 stops5h 55m

Indianapolis

Sat 5/2

10:10 am-4:25 pm

1 stop7h 15m

$284

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 6/4

9:23 am-4:30 pm

1 stop6h 07m

Indianapolis

Sun 6/7

8:00 am-12:11 pm

1 stop5h 11m

$298

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sun 3/29

4:51 pm-9:24 am

1 stop15h 33m

Indianapolis

Mon 3/30

5:08 pm-10:32 am

2 stops18h 24m

$332

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Mon 3/30

5:59 pm-12:02 am

1 stop5h 03m

Indianapolis

Thu 4/2

8:00 am-12:58 pm

1 stop5h 58m

$333

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/9

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Compare providers for flights from St. Louis to Indianapolis

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 St. Louis to Indianapolis in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Indianapolis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Indianapolis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Indianapolis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Indianapolis 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 St. Louis-Indianapolis 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 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, September is the cheapest month in which you can book a flight from St. Louis to Indianapolis (average of $160). Flying from St. Louis to Indianapolis in January is currently the most expensive (average of $299). 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 St. Louis to Indianapolis?

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 March 12, 2026.
See what other customers who have flown with 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.
American Airlines
7.1
Good
11,432 reviews

Boarding

7.5

Overall

7.1

Entertainment

6.9

Comfort

7.2

Crew

7.9

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes
American Airlines
7.1
Good
11,432 reviews
American Airlines
7.1
Good
11,432 reviews

Boarding

7.5

Overall

7.1

Entertainment

6.9

Comfort

7.2

Crew

7.9

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes

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?

    Frontier, American Airlines, and Delta can get you from St. Louis to Indianapolis in just under 3h 26m. Your travel time can differ by up to 30h 49m. 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 is the cheapest airline to fly from St. Louis to Indianapolis round-trip?

    Flying on American Airlines is currently your cheapest option to Indianapolis, with prices starting at $185. American Airlines is 57% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from St. Louis to Indianapolis one-way?

    $78 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on American Airlines and United Airlines, with prices starting from $118 and $128, respectively.

  • 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, September is the cheapest month in which you can book a flight from St. Louis to Indianapolis (average of $160). Flying from St. Louis to Indianapolis in January is currently the most expensive (average of $299). 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
Fishers
Noblesville
Greenwood
Plainfield
Mooresville
Franklin
Anderson
Carmel
Kokomo
Crawfordsville
Bloomington

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from St. Louis to Indianapolis

Discover the top airline 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 March 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$185Average$296FlexibilityNo cancel feeOn-time71%

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