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Cheap flights from St. Louis to Indianapolis from $71

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Indianapolis departing on 4/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from St. Louis to Indianapolis

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
7:05 am - 4:51 pm
STL
-
IND
8h 46m
1 stop
American Airlines Logo
1:50 pm - 10:17 pm
IND
-
STL
9h 27m
1 stop
$175American Airlines
Sat, Apr 25 - Sat, May 2
Multiple Airlines Logo
8:12 pm - 7:38 pm
STL
-
IND
22h 26m
1 stop
Multiple Airlines Logo
5:08 pm - 10:32 am
IND
-
STL
18h 24m
2 stops
$230Multiple Airlines
Mon, Mar 16 - Mon, Mar 23
Multiple Airlines Logo
8:12 pm - 7:42 pm
STL
-
IND
22h 30m
1 stop
Multiple Airlines Logo
2:43 pm - 10:30 am
IND
-
STL
20h 47m
2 stops
$231Multiple Airlines
Sat, Apr 25 - Sat, May 2
American Airlines Logo
8:00 am - 4:58 pm
STL
-
IND
7h 58m
1 stop
American Airlines Logo
5:10 am - 1:39 pm
IND
-
STL
9h 29m
1 stop
$243American Airlines
Tue, Mar 10 - Wed, Mar 11
Delta Logo
5:21 pm - 11:44 pm
STL
-
IND
5h 23m
1 stop
Delta Logo
3:25 pm - 8:42 pm
IND
-
STL
6h 17m
1 stop
$255Delta
Tue, Mar 10 - Wed, Mar 11
Delta Logo
6:00 am - 12:39 pm
STL
-
IND
5h 39m
1 stop
Delta Logo
7:59 pm - 11:25 pm
IND
-
STL
4h 26m
1 stop
$267Delta
Wed, Mar 18 - Fri, Mar 27
Frontier Logo
11:21 am - 11:17 am
STL
-
IND
22h 56m
1 stop
Frontier Logo
12:12 pm - 11:19 pm
IND
-
STL
12h 07m
2 stops
$270Frontier
Thu, Apr 30 - Mon, May 4
Southwest Logo
4:45 pm - 12:15 am
STL
-
IND
6h 30m
1 stop
Southwest Logo
5:50 pm - 12:05 am
IND
-
STL
7h 15m
1 stop
$279Southwest
Mon, Mar 16 - Mon, Mar 23
American Airlines Logo
5:46 am - 11:46 am
STL
-
IND
5h 00m
1 stop
American Airlines Logo
3:48 pm - 10:17 pm
IND
-
STL
7h 29m
1 stop
$280American Airlines
Sun, Apr 12 - Wed, Apr 15
Multiple Airlines Logo
3:49 pm - 8:32 am
STL
-
IND
15h 43m
1 stop
Multiple Airlines Logo
8:33 pm - 9:49 am
IND
-
STL
14h 16m
1 stop
$288Multiple Airlines
Mon, Mar 2 - Fri, Mar 6

Delta flights from St. Louis to Indianapolis

Our best Delta deals on St. Louis to Indianapolis flight tickets
Delta
Mar 10
STL5:21 pmLambert-St Louis
5h 23m
1 stop
IND11:44 pmIndianapolis
Mar 11
IND3:25 pmIndianapolis
6h 17m
1 stop
STL8:42 pmLambert-St Louis
$255
Delta
Mar 18
STL6:00 amLambert-St Louis
5h 39m
1 stop
IND12:39 pmIndianapolis
Mar 27
IND7:59 pmIndianapolis
4h 26m
1 stop
STL11:25 pmLambert-St Louis
$267
Delta
Mar 14
STL6:29 amLambert-St Louis
4h 06m
1 stop
IND11:35 amIndianapolis
Mar 21
IND7:05 amIndianapolis
5h 43m
1 stop
STL11:48 amLambert-St Louis
$327

United Airlines flights from St. Louis to Indianapolis

Our best United Airlines deals on St. Louis to Indianapolis flight tickets
United Airlines
Apr 2
STL7:45 amLambert-St Louis
6h 23m
1 stop
IND3:08 pmIndianapolis
Apr 5
IND6:05 pmIndianapolis
4h 03m
1 stop
STL9:08 pmLambert-St Louis
$358
United Airlines
Mar 13
STL7:41 amLambert-St Louis
4h 25m
1 stop
IND1:06 pmIndianapolis
Mar 20
IND6:12 pmIndianapolis
3h 55m
1 stop
STL9:07 pmLambert-St Louis
$415
United Airlines
Feb 28
STL9:55 amLambert-St Louis
5h 54m
1 stop
IND4:49 pmIndianapolis
Mar 4
IND7:15 amIndianapolis
4h 21m
1 stop
STL10:36 amLambert-St Louis
$477

momondo 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, momondo users made 832,500 searches. Data last updated February 16, 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

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sat 4/25

7:05 am-4:51 pm

1 stop8h 46m

Indianapolis

Sat 5/2

1:50 pm-10:17 pm

1 stop9h 27m

$175

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Mon 3/16

8:12 pm-7:38 pm

1 stop22h 26m

Indianapolis

Mon 3/23

5:08 pm-10:32 am

2 stops18h 24m

$230

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sat 4/25

8:12 pm-7:42 pm

1 stop22h 30m

Indianapolis

Sat 5/2

2:43 pm-10:30 am

2 stops20h 47m

$231

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Tue 3/10

8:00 am-4:58 pm

1 stop7h 58m

Indianapolis

Wed 3/11

5:10 am-1:39 pm

1 stop9h 29m

$243

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Tue 3/10

5:21 pm-11:44 pm

1 stop5h 23m

Indianapolis

Wed 3/11

3:25 pm-8:42 pm

1 stop6h 17m

$255

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Wed 3/18

6:00 am-12:39 pm

1 stop5h 39m

Indianapolis

Fri 3/27

7:59 pm-11:25 pm

1 stop4h 26m

$267

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 4/30

11:21 am-11:17 am

1 stop22h 56m

Indianapolis

Mon 5/4

12:12 pm-11:19 pm

2 stops12h 07m

$270

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Mon 3/16

4:45 pm-12:15 am

1 stop6h 30m

Indianapolis

Mon 3/23

5:50 pm-12:05 am

1 stop7h 15m

$279

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sun 4/12

5:46 am-11:46 am

1 stop5h 00m

Indianapolis

Wed 4/15

3:48 pm-10:17 pm

1 stop7h 29m

$280

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Mon 3/2

3:49 pm-8:32 am

1 stop15h 43m

Indianapolis

Fri 3/6

8:33 pm-9:49 am

1 stop14h 16m

$288

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Indianapolis from

How to get the cheapest flight ticket from St. Louis to Indianapolis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Indianapolis?

In general, August is the cheapest month to fly from St. Louis to Indianapolis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $234. If you are unable to visit Indianapolis during the month of August, then departing from St. Louis during the month September is also very affordable. Most momondo users find prices during this month for around $235.

What is the cheapest day to depart on your flight to Indianapolis?

Our data shows that Thursday is the least expensive day to fly to Indianapolis. Tickets to fly out on this day can be as low as $1,178. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to Indianapolis on Friday is $1,331.

How have St. Louis to Indianapolis flight prices changed over time?

As of February 2026, prices for St. Louis to Indianapolis flights are approximately 52% cheaper when compared to flights at the same time last year.

When to book flights from St. Louis to Indianapolis

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Indianapolis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Indianapolis (STL to IND) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Indianapolis

Fastest flight time

0h 55m

Direct flights

Fri

Airports in Indianapolis

1 airport
The fastest flight from St. Louis to Indianapolis takes 0h 55m
Direct flights go from St. Louis to Indianapolis on Friday. There are no airlines offering direct flights.
There is 1 airport in Indianapolis. From St. Louis there are direct flights to Indianapolis (IND).
Search flight deals

  • How far is Lambert-St Louis to Indianapolis by plane?

    A flight from Lambert-St Louis to Indianapolis will travel around 230.0 mi. Flights usually cover this in 0h 55m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Indianapolis Airport?

    Prices for flights from Lambert-St Louis Airport to Indianapolis Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Indianapolis Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Indianapolis Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Indianapolis Airport.

  • What documentation or ID do you need to fly to Indianapolis Airport?

    The travel and health documents required for your trip to Indianapolis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Indianapolis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from St. Louis to Indianapolis?

Best airlines flying from St. Louis to Indianapolis

Compare and see reviews for airlines that fly from St. Louis to Indianapolis with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $185Free CancellationRating
7.2
11,294 reviews
Search American Airlines flights

Traveling to a place near Indianapolis?

Book flights to Indianapolis if you plan to visit one of these locations
Terre Haute
Bloomington
Kokomo
Muncie
Plainfield
Anderson
Greenwood
Noblesville
Fishers
Carmel
Shelbyville
Franklin
West Lafayette
Seymour
Brownsburg
Speedway
Crawfordsville
Westfield
Greenfield
Mooresville

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Indianapolis?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from St. Louis to Indianapolis for you.

Can I find flights from St. Louis to Indianapolis with flexible booking policies on momondo?

Flights from St. Louis to Indianapolis with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from St. Louis to Indianapolis?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Indianapolis from St. Louis.

I’m not ready to book a flight from St. Louis to Indianapolis right now. Can momondo alert me if prices change?

Price alerts on flights to Indianapolis from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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