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$119+ 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 5/29. Fares are subject to change and may not be available on all flights or dates of travel.
IND — STL
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheap 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 May 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$223
(Delta)

One-way from

$119
(American Airlines)

Popular in

January

Cheapest in

May

Average price

$275
Provider with most accurate pricing for Indianapolis-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Indianapolis-Lambert-St Louis flights.
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From Indianapolis to Lambert-St Louis
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One-way flight from Indianapolis to Lambert-St Louis
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Highest demand for flights based on searches. 16% potential increase in price ($67 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Find 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 May 1, 2025.

This Delta deal was found by Cheapflights users on 4/28. 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 5/2811:17 amIND - STL
1 stop4h 18mDelta
Wed 6/46:00 amSTL - IND
1 stop4h 48mDelta
Deal found 4/28$223
This American Airlines deal was found by Cheapflights users on 4/30. 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 5/228:30 amIND - STL
1 stop5h 37mAmerican Airlines
Sat 5/246:47 pmSTL - IND
1 stop4h 16mAmerican Airlines
Deal found 4/30$235
This Mytrip deal was found by Cheapflights users on 4/30. 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.
Thu 5/227:04 pmIND - STL
1 stop17h 21mMultiple Airlines
Sat 5/2410:10 amSTL - IND
2 stops31h 17mMultiple Airlines
Deal found 4/30$244
This Southwest deal was found by Cheapflights users on 4/30. 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 7/85:20 amIND - STL
2 stops7h 25mSouthwest
Sat 7/123:55 pmSTL - IND
1 stop5h 30mSouthwest
Deal found 4/30$256
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Mon 6/96:05 pmIND - STL
1 stop5h 40mUnited Airlines
Fri 6/135:27 pmSTL - IND
1 stop3h 33mUnited Airlines
Deal found 4/29$265
This Mytrip deal was found by Cheapflights users on 4/29. 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 5/1410:50 amIND - STL
3 stops23h 25mSpirit Airlines
Sun 5/1810:10 amSTL - IND
2 stops25h 10mSpirit Airlines
Deal found 4/29$349

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 May 1, 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

Wed 5/28

11:17 am-2:35 pm

1 stop4h 18m

Lambert-St Louis

Wed 6/4

6:00 am-11:48 am

1 stop4h 48m

$223

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Thu 5/22

8:30 am-1:07 pm

1 stop5h 37m

Lambert-St Louis

Sat 5/24

6:47 pm-12:03 am

1 stop4h 16m

$235

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Thu 5/22

7:04 pm-11:25 am

1 stop17h 21m

Lambert-St Louis

Sat 5/24

10:10 am-6:27 pm

2 stops31h 17m

$244

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Tue 7/8

5:20 am-11:45 am

2 stops7h 25m

Lambert-St Louis

Sat 7/12

3:55 pm-10:25 pm

1 stop5h 30m

$256

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Mon 6/9

6:05 pm-10:45 pm

1 stop5h 40m

Lambert-St Louis

Fri 6/13

5:27 pm-10:00 pm

1 stop3h 33m

$265

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Wed 5/14

10:50 am-9:15 am

3 stops23h 25m

Lambert-St Louis

Sun 5/18

10:10 am-12:20 pm

2 stops25h 10m

$349

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Thu 5/29

8:30 am-1:07 pm

1 stop5h 37m

$119

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Tue 6/10

6:05 pm-10:45 pm

1 stop5h 40m

$142

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Wed 5/14

8:15 am-9:15 am

1 stop26h 00m

$147

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Thu 5/29

6:45 am-2:35 pm

2 stops8h 50m

$175

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 11 results
1
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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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy2 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 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 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, August is the cheapest month in which you can book a flight from Indianapolis to St. Louis (average of $311). Flying from Indianapolis to St. Louis in March is currently the most expensive (average of $356). 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 May 1, 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 16% on your trip compared to booking a flight at noon.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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 May 1, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta and United Airlines from Indianapolis to St. Louis to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,294 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.1

Crew

8.6

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Southwest
8.0
Very good
4,294 reviews
Southwest
8.0
Very good
4,294 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.1

Crew

8.6

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Delta
8.0
Very good
7,934 reviews
Southwest
8.0
Very good
4,294 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.1

Crew

8.6

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
United Airlines
7.4
Good
8,696 reviews
Southwest
8.0
Very good
4,294 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.1

Crew

8.6

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,294 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.1

Crew

8.6

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Spirit Airlines
6.3
Okay
7,963 reviews
Southwest
8.0
Very good
4,294 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.1

Crew

8.6

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

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.

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

    Flying on Delta is currently your cheapest option to St. Louis, with prices starting at $223. Additional round-trip tickets that might be worth considering are offered by American Airlines and Southwest, with the lowest prices starting at $235 and $256, respectively. Delta is 37% cheaper than the average price of flights available within the next 90 days to this destination.

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

    The cheapest airlines for a one-way flight from Indianapolis to St. Louis are American Airlines ($119), United Airlines ($142), and Spirit Airlines ($147).

  • 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, August is the cheapest month in which you can book a flight from Indianapolis to St. Louis (average of $311). Flying from Indianapolis to St. Louis in March is currently the most expensive (average of $356). 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
Fenton
Maryland Heights
Fairview Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Glencoe
Alton
Farmington
O'Fallon

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Top 3 airlines flying from Indianapolis to St. Louis

Discover the top 3 airlines 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$164Average$366FlexibilityNo cancel feeOn-time69%
DeltaCheapest$226Average$336FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$240Average$326FlexibilityNo cancel feeOn-time71%

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