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Cheap flights from St. Louis to Indianapolis from $63

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 4/29. 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.
Frontier Logo
8:39 am - 3:22 pm
STL
-
IND
5h 43m
1 stop
Frontier Logo
1:20 pm - 11:19 pm
IND
-
STL
10h 59m
1 stop
$180Frontier
Fri, Apr 24 - Sun, Apr 26
Multiple Airlines Logo
6:55 pm - 11:23 am
STL
-
IND
15h 28m
1 stop
Multiple Airlines Logo
6:10 am - 12:21 am
IND
-
STL
19h 11m
1 stop
$196Multiple Airlines
Thu, May 7 - Thu, May 14
Multiple Airlines Logo
6:55 pm - 11:23 am
STL
-
IND
15h 28m
1 stop
Multiple Airlines Logo
6:10 am - 4:54 pm
IND
-
STL
11h 44m
2 stops
$213Multiple Airlines
Thu, May 7 - Thu, May 14
Frontier Logo
8:17 pm - 11:11 am
STL
-
IND
13h 54m
2 stops
Frontier Logo
12:34 pm - 6:50 am
IND
-
STL
19h 16m
1 stop
$226Frontier
Mon, Apr 20 - Fri, Apr 24
Frontier Logo
4:59 pm - 7:38 am
STL
-
IND
13h 39m
1 stop
Frontier Logo
1:20 pm - 2:36 pm
IND
-
STL
26h 16m
2 stops
$246Frontier
Wed, Apr 22 - Sun, Apr 26
Multiple Airlines Logo
4:59 pm - 11:11 am
STL
-
IND
17h 12m
1 stop
Multiple Airlines Logo
8:00 am - 11:19 pm
IND
-
STL
16h 19m
1 stop
$250Multiple Airlines
Mon, Apr 27 - Wed, Apr 29
Multiple Airlines Logo
6:55 pm - 11:23 am
STL
-
IND
15h 28m
1 stop
Multiple Airlines Logo
6:10 am - 8:55 am
IND
-
STL
27h 45m
2 stops
$259Multiple Airlines
Sun, May 10 - Tue, May 12
Multiple Airlines Logo
4:59 pm - 11:11 am
STL
-
IND
17h 12m
1 stop
Multiple Airlines Logo
8:00 am - 10:26 am
IND
-
STL
27h 26m
2 stops
$261Multiple Airlines
Mon, Apr 27 - Wed, Apr 29
Multiple Airlines Logo
4:59 pm - 7:38 am
STL
-
IND
13h 39m
1 stop
Multiple Airlines Logo
6:37 pm - 10:49 am
IND
-
STL
17h 12m
2 stops
$268Multiple Airlines
Wed, Apr 22 - Sat, Apr 25
Delta Logo
6:45 am - 1:27 pm
STL
-
IND
5h 42m
1 stop
Delta Logo
5:45 pm - 9:09 pm
IND
-
STL
4h 24m
1 stop
$275Delta
Sat, May 16 - Sat, May 16

Frontier flights from St. Louis to Indianapolis

Our best Frontier deals on St. Louis to Indianapolis flight tickets
Frontier
Apr 24
STL8:39 amLambert-St Louis
5h 43m
1 stop
IND3:22 pmIndianapolis
Apr 26
IND1:20 pmIndianapolis
10h 59m
1 stop
STL11:19 pmLambert-St Louis
$180
Frontier
Apr 20
STL8:17 pmLambert-St Louis
13h 54m
2 stops
IND11:11 amIndianapolis
Apr 24
IND12:34 pmIndianapolis
19h 16m
1 stop
STL6:50 amLambert-St Louis
$226
Frontier
Apr 22
STL4:59 pmLambert-St Louis
13h 39m
1 stop
IND7:38 amIndianapolis
Apr 26
IND1:20 pmIndianapolis
26h 16m
2 stops
STL2:36 pmLambert-St Louis
$246

American Airlines flights from St. Louis to Indianapolis

Our best American Airlines deals on St. Louis to Indianapolis flight tickets
American Airlines
May 11
STL7:05 amLambert-St Louis
3h 44m
1 stop
IND11:49 amIndianapolis
May 12
IND7:13 amIndianapolis
7h 50m
1 stop
STL2:03 pmLambert-St Louis
$281
American Airlines
May 10
STL7:05 amLambert-St Louis
5h 05m
1 stop
IND1:10 pmIndianapolis
May 12
IND5:55 amIndianapolis
6h 52m
1 stop
STL11:47 amLambert-St Louis
$300
American Airlines
Jun 19
STL6:12 pmLambert-St Louis
4h 55m
1 stop
IND12:07 amIndianapolis
Jun 21
IND8:49 pmIndianapolis
4h 05m
1 stop
STL11:54 pmLambert-St Louis
$351

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 April 10, 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

8:39 am-3:22 pm

1 stop5h 43m

Indianapolis

Sun 4/26

1:20 pm-11:19 pm

1 stop10h 59m

$180

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 5/7

6:55 pm-11:23 am

1 stop15h 28m

Indianapolis

Thu 5/14

6:10 am-12:21 am

1 stop19h 11m

$196

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 5/7

6:55 pm-11:23 am

1 stop15h 28m

Indianapolis

Thu 5/14

6:10 am-4:54 pm

2 stops11h 44m

$213

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Mon 4/20

8:17 pm-11:11 am

2 stops13h 54m

Indianapolis

Fri 4/24

12:34 pm-6:50 am

1 stop19h 16m

$226

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Wed 4/22

4:59 pm-7:38 am

1 stop13h 39m

Indianapolis

Sun 4/26

1:20 pm-2:36 pm

2 stops26h 16m

$246

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Mon 4/27

4:59 pm-11:11 am

1 stop17h 12m

Indianapolis

Wed 4/29

8:00 am-11:19 pm

1 stop16h 19m

$250

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sun 5/10

6:55 pm-11:23 am

1 stop15h 28m

Indianapolis

Tue 5/12

6:10 am-8:55 am

2 stops27h 45m

$259

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Mon 4/27

4:59 pm-11:11 am

1 stop17h 12m

Indianapolis

Wed 4/29

8:00 am-10:26 am

2 stops27h 26m

$261

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Wed 4/22

4:59 pm-7:38 am

1 stop13h 39m

Indianapolis

Sat 4/25

6:37 pm-10:49 am

2 stops17h 12m

$268
Quickest round-trip

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sat 5/16

6:45 am-1:27 pm

1 stop5h 42m

Indianapolis

Sat 5/16

5:45 pm-9:09 pm

1 stop4h 24m

$275

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 typical price of a round-trip flight between St. Louis and Indianapolis?

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 April 2026, prices for St. Louis to Indianapolis flights are approximately 181% more expensive 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

3h 28m

Direct flights

None
The fastest flight from St. Louis to Indianapolis takes 3h 28m
There are no direct flights from St. Louis to Indianapolis. There are no popular flight routes from St. Louis to Indianapolis.
Search flight deals

Frequently asked questions about flying from St. Louis to Indianapolis

  • 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 3h 28m, 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 plane model from St. Louis to Indianapolis?

  • 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
7.1
11,564 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
Carmel
Fishers
Shelbyville
Franklin
Speedway
Seymour
West Lafayette
Brownsburg
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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