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$98+ 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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
IND — STL
ene. 15 — ene. 221
jue. 1/15
jue. 1/22
1 adult, Economy
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Cheap flight deals from Indianapolis to St. Louis

Cheapest flights from Indianapolis to St. Louis
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 diciembre 16, 2025.

This American Airlines deal was found by Cheapflights users on 12/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/232:11 pmIND - STL
1 stop3h 35mAmerican Airlines
mié. 12/249:08 amSTL - IND
1 stop5h 47mAmerican Airlines
Deal found 12/14$435
This Delta deal was found by Cheapflights users on 12/14. 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.
jue. 12/186:42 pmIND - STL
1 stop4h 15mDelta
jue. 12/256:29 amSTL - IND
1 stop3h 55mDelta
Deal found 12/14$454
This Southwest deal was found by Cheapflights users on 12/14. 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.
mar. 12/231:00 pmIND - STL
2 stops6h 10mSouthwest
mié. 12/244:25 pmSTL - IND
1 stop5h 10mSouthwest
Deal found 12/14$470
This United Airlines deal was found by Cheapflights users on 12/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/307:45 pmIND - STL
1 stop3h 58mUnited Airlines
sáb. 1/33:10 pmSTL - IND
1 stop5h 49mUnited Airlines
Deal found 12/15$477
This Kiwi.com deal was found by Cheapflights users on 12/14. 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.
jue. 12/188:48 pmIND - STL
2 stops23h 59mFrontier
jue. 12/2510:42 amSTL - IND
1 stop24h 03mFrontier
Deal found 12/14$504
This Southwest deal was found by Cheapflights users on 12/14. 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.
vie. 12/267:30 pmIND - STL
1 stop5h 20mSouthwest
vie. 1/25:20 amSTL - IND
1 stop5h 05mSouthwest
Deal found 12/14$522
This United Airlines deal was found by Cheapflights users on 12/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/191:45 pmIND - STL
1 stop3h 42mUnited Airlines
dom. 12/219:55 amSTL - IND
1 stop4h 27mUnited Airlines
Deal found 12/15$685
This Kiwi.com deal was found by Cheapflights users on 12/13. 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.
mié. 12/1712:03 pmIND - STL
1 stop23h 53mMultiple Airlines
vie. 12/198:42 pmSTL - IND
2 stops22h 11mMultiple Airlines
Deal found 12/13$687
This Southwest deal was found by Cheapflights users on 12/15. 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.
vie. 12/1910:40 amIND - STL
2 stops8h 15mSouthwest
dom. 12/215:15 pmSTL - IND
1 stop6h 35mSouthwest
Deal found 12/15$690

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 diciembre 16, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$166
(Kiwi.com)

One-way from

$98
(Kiwi.com)

Popular in

September

Cheapest in

November

Average price

$388
Provider with most accurate pricing for Indianapolis-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Indianapolis-Lambert-St Louis flights.
Search Deals
From Indianapolis to Lambert-St Louis
Search Deals
One-way flight from Indianapolis to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($28 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 diciembre 16, 2025.
Use the filters below to find and compare flights from Indianapolis to St. Louis that are best for you.

Fly from

Indianapolis

Fly to

St. Louis

Route

Depart

Return

Price

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

mar. 2/24

3:12 pm-10:27 pm

1 stop8h 15m

Lambert-St Louis

vie. 2/27

1:59 pm-8:47 pm

2 stops29h 48m

$210

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

mié. 1/14

7:01 am-10:20 am

1 stop4h 19m

Lambert-St Louis

mié. 1/14

3:54 pm-11:27 pm

1 stop6h 33m

$257

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

mar. 1/6

5:15 am-10:33 pm

1 stop18h 18m

Lambert-St Louis

jue. 1/29

5:42 pm-9:43 am

1 stop15h 01m

$263

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

mar. 1/6

7:00 am-11:15 am

1 stop5h 15m

Lambert-St Louis

jue. 1/29

2:15 pm-10:05 pm

2 stops6h 50m

$273

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

mié. 1/21

11:41 am-4:07 pm

1 stop5h 26m

Lambert-St Louis

vie. 1/23

5:25 pm-11:06 pm

1 stop4h 41m

$287

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

mar. 2/24

11:25 am-7:00 pm

2 stops8h 35m

Lambert-St Louis

vie. 2/27

10:35 am-10:25 pm

2 stops10h 50m

$297

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

sáb. 1/10

6:10 am-12:55 pm

1 stop7h 45m

Lambert-St Louis

sáb. 1/10

4:25 pm-10:25 pm

1 stop5h 00m

$304

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

jue. 1/22

10:30 am-6:45 pm

2 stops9h 15m

Lambert-St Louis

lun. 1/26

6:05 am-3:05 pm

2 stops8h 00m

$327

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

jue. 1/8

7:15 am-11:02 am

1 stop4h 47m

Lambert-St Louis

lun. 1/12

6:40 pm-11:30 pm

1 stop3h 50m

$331

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

lun. 1/12

2:12 pm-6:51 am

2 stops41h 39m

$98

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Showing 1-10 of 16 results
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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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust 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 Indianapolis-St. Louis flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Indianapolis-St. Louis flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.
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

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

Currently, October is the cheapest month in which you can book a flight from Indianapolis to St. Louis (average of $85). Flying from Indianapolis to St. Louis in December is currently the most expensive (average of $284). 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 IND to STL?

Find hourly flight availability from Indianapolis to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated diciembre 16, 2025.

A simple way to save on the total cost of your ticket is to fly from Indianapolis to St. Louis in the evening. If you’re flexible enough to do this you can expect to save up to 15% on your trip compared to booking a flight at noon.

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 diciembre 16, 2025.
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.
American Airlines
7.2
Good
11,049 reviews

Food

6.5

Entertainment

6.9

Boarding

7.5

Comfort

7.2

Overall

7.2

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Jeremy,Dec 2025

OKC - CLT

Was an okay flight. Had extra seat empty beside me so was able to stretch a bit
American Airlines
7.2
Good
11,049 reviews
American Airlines
7.2
Good
11,049 reviews

Food

6.5

Entertainment

6.9

Boarding

7.5

Comfort

7.2

Overall

7.2

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Jeremy,Dec 2025

OKC - CLT

Was an okay flight. Had extra seat empty beside me so was able to stretch a bit

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.

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

    For as low as $257, American Airlines can have you in St. Louis from Indianapolis in 4h 19m. Indianapolis and St. Louis are separated by a distance of 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 Indianapolis to St. Louis round-trip?

    Flying on American Airlines is currently your cheapest option to St. Louis, with prices starting at $196. American Airlines is 47% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Indianapolis to St. Louis 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 Indianapolis to St. Louis?

    Currently, October is the cheapest month in which you can book a flight from Indianapolis to St. Louis (average of $85). Flying from Indianapolis to St. Louis in December is currently the most expensive (average of $284). 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 St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Swansea
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

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Alternative routes for Indianapolis to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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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 diciembre 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$196Average$407FlexibilityNo cancel feeOn-time71%

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