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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 6/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
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.
Multiple Airlines Logo
6:33 pm - 11:23 am
STL
-
IND
15h 50m
1 stop
Multiple Airlines Logo
8:00 am - 8:55 am
IND
-
STL
25h 55m
2 stops
$187Multiple Airlines
Tue, Jun 2 - Thu, Jun 4
Frontier Logo
6:33 pm - 11:05 am
STL
-
IND
15h 32m
1 stop
Frontier Logo
8:53 pm - 8:57 am
IND
-
STL
13h 04m
2 stops
$214Frontier
Tue, Jul 7 - Thu, Jul 9
Multiple Airlines Logo
6:31 pm - 11:19 am
STL
-
IND
15h 48m
1 stop
Multiple Airlines Logo
8:00 am - 8:52 am
IND
-
STL
25h 52m
2 stops
$216Multiple Airlines
Sun, Jun 14 - Thu, Jun 18
Frontier Logo
6:31 pm - 11:19 am
STL
-
IND
15h 48m
1 stop
Frontier Logo
8:51 pm - 5:30 pm
IND
-
STL
21h 39m
2 stops
$218Frontier
Thu, Jun 18 - Mon, Jun 22
Multiple Airlines Logo
6:33 pm - 11:23 am
STL
-
IND
15h 50m
1 stop
Multiple Airlines Logo
9:19 pm - 8:52 am
IND
-
STL
36h 33m
2 stops
$234Multiple Airlines
Thu, Jun 4 - Thu, Jun 11
Frontier Logo
8:08 pm - 7:54 pm
STL
-
IND
22h 46m
1 stop
Frontier Logo
1:44 pm - 6:18 pm
IND
-
STL
5h 34m
1 stop
$239Frontier
Wed, Jun 3 - Wed, Jun 10
Frontier Logo
6:31 pm - 11:19 am
STL
-
IND
15h 48m
1 stop
Frontier Logo
8:51 pm - 5:30 pm
IND
-
STL
21h 39m
2 stops
$248Frontier
Thu, Jun 11 - Mon, Jun 15
Frontier Logo
7:38 pm - 8:06 pm
STL
-
IND
23h 28m
1 stop
Frontier Logo
8:51 pm - 7:23 pm
IND
-
STL
23h 32m
1 stop
$251Frontier
Thu, Jun 11 - Mon, Jun 15
Frontier Logo
8:08 pm - 7:54 pm
STL
-
IND
22h 46m
1 stop
Frontier Logo
8:39 pm - 7:23 pm
IND
-
STL
23h 44m
1 stop
$254Frontier
Thu, Jun 4 - Mon, Jun 8
Frontier Logo
4:19 pm - 1:01 pm
STL
-
IND
19h 42m
1 stop
Frontier Logo
8:39 pm - 7:23 pm
IND
-
STL
23h 44m
1 stop
$260Frontier
Tue, Jun 2 - Thu, Jun 4

Southwest flights from St. Louis to Indianapolis

Our best Southwest deals on St. Louis to Indianapolis flight tickets
Southwest
Jun 3
STL5:35 amLambert-St Louis
6h 05m
2 stops
IND12:40 pmIndianapolis
Jun 10
IND7:55 pmIndianapolis
4h 45m
1 stop
STL11:40 pmLambert-St Louis
$300
Southwest
Jun 3
STL5:35 amLambert-St Louis
6h 05m
2 stops
IND12:40 pmIndianapolis
Jun 10
IND12:45 pmIndianapolis
6h 40m
2 stops
STL6:25 pmLambert-St Louis
$305
Southwest
Aug 31
STL8:30 amLambert-St Louis
9h 00m
2 stops
IND6:30 pmIndianapolis
Sep 2
IND3:10 pmIndianapolis
5h 40m
1 stop
STL7:50 pmLambert-St Louis
$311

Frontier flights from St. Louis to Indianapolis

Our best Frontier deals on St. Louis to Indianapolis flight tickets
Frontier
Jul 7
STL6:33 pmLambert-St Louis
15h 32m
1 stop
IND11:05 amIndianapolis
Jul 9
IND8:53 pmIndianapolis
13h 04m
2 stops
STL8:57 amLambert-St Louis
$214
Frontier
Jun 18
STL6:31 pmLambert-St Louis
15h 48m
1 stop
IND11:19 amIndianapolis
Jun 22
IND8:51 pmIndianapolis
21h 39m
2 stops
STL5:30 pmLambert-St Louis
$218
Frontier
Jun 3
STL8:08 pmLambert-St Louis
22h 46m
1 stop
IND7:54 pmIndianapolis
Jun 10
IND1:44 pmIndianapolis
5h 34m
1 stop
STL6:18 pmLambert-St Louis
$239

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 May 8, 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

Tue 6/2

6:33 pm-11:23 am

1 stop15h 50m

Indianapolis

Thu 6/4

8:00 am-8:55 am

2 stops25h 55m

$187

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Tue 7/7

6:33 pm-11:05 am

1 stop15h 32m

Indianapolis

Thu 7/9

8:53 pm-8:57 am

2 stops13h 04m

$214

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sun 6/14

6:31 pm-11:19 am

1 stop15h 48m

Indianapolis

Thu 6/18

8:00 am-8:52 am

2 stops25h 52m

$216

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 6/18

6:31 pm-11:19 am

1 stop15h 48m

Indianapolis

Mon 6/22

8:51 pm-5:30 pm

2 stops21h 39m

$218

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 6/4

6:33 pm-11:23 am

1 stop15h 50m

Indianapolis

Thu 6/11

9:19 pm-8:52 am

2 stops36h 33m

$234
Quickest round-trip

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Wed 6/3

8:08 pm-7:54 pm

1 stop22h 46m

Indianapolis

Wed 6/10

1:44 pm-6:18 pm

1 stop5h 34m

$239

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 6/11

6:31 pm-11:19 am

1 stop15h 48m

Indianapolis

Mon 6/15

8:51 pm-5:30 pm

2 stops21h 39m

$248

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 6/11

7:38 pm-8:06 pm

1 stop23h 28m

Indianapolis

Mon 6/15

8:51 pm-7:23 pm

1 stop23h 32m

$251

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 6/4

8:08 pm-7:54 pm

1 stop22h 46m

Indianapolis

Mon 6/8

8:39 pm-7:23 pm

1 stop23h 44m

$254

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Tue 6/2

4:19 pm-1:01 pm

1 stop19h 42m

Indianapolis

Thu 6/4

8:39 pm-7:23 pm

1 stop23h 44m

$260

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.

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

As of May 2026, prices for St. Louis to Indianapolis flights are approximately 25% 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

3h 22m

Direct flights

None
The fastest flight from St. Louis to Indianapolis takes 3h 22m
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 22m, 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
11,667 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
Franklin
Shelbyville
Speedway
West Lafayette
Westfield
Seymour
Crawfordsville
Brownsburg
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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