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Cheap flights from St. Louis to Indianapolis from $63

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Indianapolis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
7:42 pm - 12:01 pmSTL  Lambert-St Louis-IND Indianapolis
15h 19m1 stop Denver Intl
Frontier Logo
10:38 am - 4:58 pmIND  Indianapolis-STL Lambert-St Louis
7h 20m1 stop Dallas/Fort Worth
$224Frontier
Sat, Oct 17 - Mon, Oct 19
American Airlines Logo
7:27 am - 12:19 pmSTL  Lambert-St Louis-IND Indianapolis
3h 52m1 stop Chicago O'Hare Intl
American Airlines Logo
8:52 pm - 12:27 amIND  Indianapolis-STL Lambert-St Louis
4h 35m1 stop Chicago O'Hare Intl
$237American Airlines
Thu, Sep 17 - Mon, Sep 21
Southwest Logo
5:55 am - 1:10 pmSTL  Lambert-St Louis-IND Indianapolis
6h 15m1 stop Baltimore/Washington
Southwest Logo
7:00 am - 12:40 pmIND  Indianapolis-STL Lambert-St Louis
6h 40m1 stop Houston Hobby
$237Southwest
Tue, Sep 29 - Wed, Sep 30
Southwest Logo
6:10 pm - 12:15 amSTL  Lambert-St Louis-IND Indianapolis
5h 05m1 stop Chicago Midway
Southwest Logo
7:15 am - 12:45 pmIND  Indianapolis-STL Lambert-St Louis
6h 30m1 stop Dallas Love Field
$237Southwest
Thu, Oct 15 - Mon, Oct 19
Southwest Logo
12:50 pm - 9:05 pmSTL  Lambert-St Louis-IND Indianapolis
7h 15m2 stops Chicago Midway Nashville Intl
Southwest Logo
6:30 am - 11:40 amIND  Indianapolis-STL Lambert-St Louis
6h 10m1 stop Denver Intl
$242Southwest
Tue, Sep 29 - Wed, Sep 30
Frontier Logo
12:14 pm - 8:02 pmSTL  Lambert-St Louis-IND Indianapolis
6h 48m1 stop Dallas/Fort Worth
Frontier Logo
11:25 am - 11:16 pmIND  Indianapolis-STL Lambert-St Louis
12h 51m1 stop Orlando
$248Frontier
Thu, Oct 29 - Mon, Nov 2
Frontier Logo
12:14 pm - 8:02 pmSTL  Lambert-St Louis-IND Indianapolis
6h 48m1 stop Dallas/Fort Worth
Frontier Logo
11:25 am - 11:16 pmIND  Indianapolis-STL Lambert-St Louis
12h 51m1 stop Orlando
$248Frontier
Thu, Nov 5 - Sun, Nov 8
Southwest Logo
7:15 am - 4:55 pmSTL  Lambert-St Louis-IND Indianapolis
8h 40m2 stops Nashville Intl Baltimore/Washington
Southwest Logo
6:10 am - 4:25 pmIND  Indianapolis-STL Lambert-St Louis
11h 15m2 stops Austin Bergstrom Dallas Love Field
$253Southwest
Tue, Sep 29 - Wed, Sep 30
United Airlines Logo
12:28 pm - 9:59 pmSTL  Lambert-St Louis-IND Indianapolis
8h 31m1 stop Newark
United Airlines Logo
3:15 pm - 8:47 pmIND  Indianapolis-STL Lambert-St Louis
6h 32m1 stop Newark
$489United Airlines
Fri, Sep 11 - Tue, Sep 15
United Airlines Logo
7:00 am - 2:03 pmSTL  Lambert-St Louis-IND Indianapolis
6h 03m1 stop Newark
United Airlines Logo
9:21 am - 12:02 pmIND  Indianapolis-STL Lambert-St Louis
3h 41m1 stop Chicago O'Hare Intl
$489United Airlines
Thu, Sep 10 - Mon, Sep 14

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American Airlines flights from St. Louis to Indianapolis

Our best American Airlines deals on St. Louis to Indianapolis flight tickets
American Airlines
Sep 17
STL7:27 amLambert-St Louis
3h 52m
1 stop
IND12:19 pmIndianapolis
Sep 21
IND8:52 pmIndianapolis
4h 35m
1 stop
STL12:27 amLambert-St Louis
$237
American Airlines
Sep 5
STL9:31 amLambert-St Louis
5h 11m
1 stop
IND3:42 pmIndianapolis
Sep 6
IND5:01 amIndianapolis
4h 23m
1 stop
STL8:24 amLambert-St Louis
$391
American Airlines
Sep 1
STL4:50 pmLambert-St Louis
6h 08m
1 stop
IND11:58 pmIndianapolis
Sep 8
IND4:12 pmIndianapolis
7h 43m
1 stop
STL10:55 pmLambert-St Louis
$589

Frontier flights from St. Louis to Indianapolis

Our best Frontier deals on St. Louis to Indianapolis flight tickets
Frontier
Oct 17
STL7:42 pmLambert-St Louis
15h 19m
1 stop
IND12:01 pmIndianapolis
Oct 19
IND10:38 amIndianapolis
7h 20m
1 stop
STL4:58 pmLambert-St Louis
$224
Frontier
Oct 29
STL12:14 pmLambert-St Louis
6h 48m
1 stop
IND8:02 pmIndianapolis
Nov 2
IND11:25 amIndianapolis
12h 51m
1 stop
STL11:16 pmLambert-St Louis
$248
Frontier
Oct 12
STL4:30 pmLambert-St Louis
16h 56m
1 stop
IND10:26 amIndianapolis
Oct 19
IND7:59 pmIndianapolis
44h 25m
2 stops
STL3:24 pmLambert-St Louis
$306

momondo Fare Finder

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

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Route

Depart

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Price

Cheapest round-trip

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Sat 10/17

7:42 pm-12:01 pm

1 stop15h 19m

Indianapolis

Mon 10/19

10:38 am-4:58 pm

1 stop7h 20m

$224
Quickest round-trip

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Thu 9/17

7:27 am-12:19 pm

1 stop3h 52m

Indianapolis

Mon 9/21

8:52 pm-12:27 am

1 stop4h 35m

$237

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Tue 9/29

5:55 am-1:10 pm

1 stop6h 15m

Indianapolis

Wed 9/30

7:00 am-12:40 pm

1 stop6h 40m

$237

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Thu 10/15

6:10 pm-12:15 am

1 stop5h 05m

Indianapolis

Mon 10/19

7:15 am-12:45 pm

1 stop6h 30m

$237

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Tue 9/29

12:50 pm-9:05 pm

2 stops7h 15m

Indianapolis

Wed 9/30

6:30 am-11:40 am

1 stop6h 10m

$242

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Thu 10/29

12:14 pm-8:02 pm

1 stop6h 48m

Indianapolis

Mon 11/2

11:25 am-11:16 pm

1 stop12h 51m

$248

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Thu 11/5

12:14 pm-8:02 pm

1 stop6h 48m

Indianapolis

Sun 11/8

11:25 am-11:16 pm

1 stop12h 51m

$248

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Tue 9/29

7:15 am-4:55 pm

2 stops8h 40m

Indianapolis

Wed 9/30

6:10 am-4:25 pm

2 stops11h 15m

$253

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Fri 9/11

12:28 pm-9:59 pm

1 stop8h 31m

Indianapolis

Tue 9/15

3:15 pm-8:47 pm

1 stop6h 32m

$489

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Thu 9/10

7:00 am-2:03 pm

1 stop6h 03m

Indianapolis

Mon 9/14

9:21 am-12:02 pm

1 stop3h 41m

$489

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, May 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 $0. If you are unable to visit Indianapolis during the month of May, then departing from St. Louis during the month September is also very affordable. Most momondo users find prices during this month for around $268.

What is the cheapest Lambert-St Louis to Indianapolis flight route?

Fly from Lambert-St Louis to Indianapolis for the best Lambert-St Louis - Indianapolis flight prices

What cabin class options are available on St. Louis to Indianapolis flights?

There is only 1 cabin class available to choose from on St. Louis to Indianapolis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

As of August 2026, prices for St. Louis to Indianapolis flights are approximately 40% 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

Best Price Found

$63

Fastest flight time

3h 25m

Direct flights

None
The best one-way flight to Indianapolis from St. Louis in the past 72 hours is $63. The best round-trip flight deal from St. Louis to Indianapolis found on momondo in the last 72 hours is $224.
The fastest flight from St. Louis to Indianapolis takes 3h 25m
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 25m, 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
United AirlinesPriceFrom $268Free CancellationRating
7.4
10,146 reviews
Search United 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
Greenwood
Anderson
Plainfield
Noblesville
Carmel
West Lafayette
Speedway
Fishers
Westfield
Franklin
Seymour
Shelbyville
Brownsburg
Crawfordsville
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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