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Cheap flights from St. Louis to Indianapolis from $97

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from St. Louis to Indianapolis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
8:10 pm - 3:17 pmSTL  Lambert-St Louis-IND Indianapolis
18h 07m1 stop Denver Intl
Frontier Logo
11:21 am - 4:34 pmIND  Indianapolis-STL Lambert-St Louis
6h 13m1 stop Orlando
$183Frontier
Sat, Sep 19 - Mon, Sep 21
Frontier Logo
8:10 pm - 3:17 pmSTL  Lambert-St Louis-IND Indianapolis
18h 07m1 stop Denver Intl
Frontier Logo
7:48 pm - 11:32 amIND  Indianapolis-STL Lambert-St Louis
40h 44m2 stops Atlanta Hartsfield-Jackson Las Vegas Harry Reid Intl
$214Frontier
Mon, Sep 14 - Mon, Sep 21
Frontier Logo
12:17 pm - 6:53 pmSTL  Lambert-St Louis-IND Indianapolis
29h 36m2 stops Las Vegas Harry Reid Intl Atlanta Hartsfield-Jackson
Frontier Logo
4:12 pm - 7:17 pmIND  Indianapolis-STL Lambert-St Louis
28h 05m1 stop Denver Intl
$220Frontier
Tue, Sep 15 - Tue, Sep 22
American Airlines Logo
7:27 am - 7:15 pmSTL  Lambert-St Louis-IND Indianapolis
10h 48m1 stop Chicago O'Hare Intl
American Airlines Logo
6:50 am - 4:48 pmIND  Indianapolis-STL Lambert-St Louis
10h 58m1 stop Chicago O'Hare Intl
$263American Airlines
Tue, Sep 15 - Wed, Sep 16
American Airlines Logo
11:01 am - 7:15 pmSTL  Lambert-St Louis-IND Indianapolis
7h 14m1 stop Chicago O'Hare Intl
American Airlines Logo
10:32 am - 12:27 amIND  Indianapolis-STL Lambert-St Louis
14h 55m1 stop Chicago O'Hare Intl
$263American Airlines
Sat, Sep 19 - Mon, Sep 21
American Airlines Logo
8:07 pm - 9:01 amSTL  Lambert-St Louis-IND Indianapolis
11h 54m1 stop Chicago O'Hare Intl
American Airlines Logo
10:32 am - 4:48 pmIND  Indianapolis-STL Lambert-St Louis
7h 16m1 stop Chicago O'Hare Intl
$263American Airlines
Tue, Sep 8 - Thu, Sep 10
American Airlines Logo
7:27 am - 7:15 pmSTL  Lambert-St Louis-IND Indianapolis
10h 48m1 stop Chicago O'Hare Intl
American Airlines Logo
6:50 am - 1:16 pmIND  Indianapolis-STL Lambert-St Louis
7h 26m1 stop Chicago O'Hare Intl
$263American Airlines
Tue, Sep 15 - Wed, Sep 23
American Airlines Logo
5:00 am - 10:59 pmSTL  Lambert-St Louis-IND Indianapolis
16h 59m1 stop Chicago O'Hare Intl
American Airlines Logo
12:40 pm - 8:57 pmIND  Indianapolis-STL Lambert-St Louis
9h 17m1 stop Chicago O'Hare Intl
$263American Airlines
Tue, Oct 20 - Thu, Oct 22
American Airlines Logo
5:00 am - 2:01 pmSTL  Lambert-St Louis-IND Indianapolis
8h 01m1 stop Chicago O'Hare Intl
American Airlines Logo
2:31 pm - 12:27 amIND  Indianapolis-STL Lambert-St Louis
10h 56m1 stop Chicago O'Hare Intl
$263American Airlines
Mon, Sep 14 - Mon, Sep 21
American Airlines Logo
5:18 pm - 12:19 pmSTL  Lambert-St Louis-IND Indianapolis
18h 01m1 stop Chicago O'Hare Intl
American Airlines Logo
2:31 pm - 8:44 pmIND  Indianapolis-STL Lambert-St Louis
7h 13m1 stop Chicago O'Hare Intl
$263American Airlines
Tue, Sep 15 - Tue, Sep 22

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Southwest flights from St. Louis to Indianapolis

Our best Southwest deals on St. Louis to Indianapolis flight tickets
Southwest
Sep 15
STL2:50 pmLambert-St Louis
7h 00m
2 stops
IND10:50 pmIndianapolis
Sep 16
IND7:40 amIndianapolis
4h 40m
1 stop
STL11:20 amLambert-St Louis
$278
Southwest
Sep 15
STL2:50 pmLambert-St Louis
7h 00m
2 stops
IND10:50 pmIndianapolis
Sep 22
IND1:00 pmIndianapolis
8h 45m
2 stops
STL8:45 pmLambert-St Louis
$283
Southwest
Sep 10
STL11:40 amLambert-St Louis
8h 50m
2 stops
IND9:30 pmIndianapolis
Sep 14
IND5:10 amIndianapolis
6h 30m
1 stop
STL10:40 amLambert-St Louis
$287

United Airlines flights from St. Louis to Indianapolis

Our best United Airlines deals on St. Louis to Indianapolis flight tickets
United Airlines
Sep 10
STL10:53 amLambert-St Louis
4h 40m
1 stop
IND4:33 pmIndianapolis
Sep 11
IND11:38 amIndianapolis
5h 00m
1 stop
STL3:38 pmLambert-St Louis
$282
United Airlines
Oct 9
STL8:00 amLambert-St Louis
3h 42m
1 stop
IND12:42 pmIndianapolis
Oct 11
IND5:02 pmIndianapolis
5h 19m
1 stop
STL9:21 pmLambert-St Louis
$319
United Airlines
Oct 12
STL5:36 pmLambert-St Louis
3h 31m
1 stop
IND10:07 pmIndianapolis
Oct 14
IND11:37 amIndianapolis
3h 40m
1 stop
STL2:17 pmLambert-St Louis
$343

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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Price

Cheapest round-trip

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Sat 9/19

8:10 pm-3:17 pm

1 stop18h 07m

Indianapolis

Mon 9/21

11:21 am-4:34 pm

1 stop6h 13m

$183

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Mon 9/14

8:10 pm-3:17 pm

1 stop18h 07m

Indianapolis

Mon 9/21

7:48 pm-11:32 am

2 stops40h 44m

$214

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Tue 9/15

12:17 pm-6:53 pm

2 stops29h 36m

Indianapolis

Tue 9/22

4:12 pm-7:17 pm

1 stop28h 05m

$220

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Tue 9/15

7:27 am-7:15 pm

1 stop10h 48m

Indianapolis

Wed 9/16

6:50 am-4:48 pm

1 stop10h 58m

$263

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Sat 9/19

11:01 am-7:15 pm

1 stop7h 14m

Indianapolis

Mon 9/21

10:32 am-12:27 am

1 stop14h 55m

$263

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Tue 9/8

8:07 pm-9:01 am

1 stop11h 54m

Indianapolis

Thu 9/10

10:32 am-4:48 pm

1 stop7h 16m

$263
Quickest round-trip

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Tue 9/15

7:27 am-7:15 pm

1 stop10h 48m

Indianapolis

Wed 9/23

6:50 am-1:16 pm

1 stop7h 26m

$263

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Tue 10/20

5:00 am-10:59 pm

1 stop16h 59m

Indianapolis

Thu 10/22

12:40 pm-8:57 pm

1 stop9h 17m

$263

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Mon 9/14

5:00 am-2:01 pm

1 stop8h 01m

Indianapolis

Mon 9/21

2:31 pm-12:27 am

1 stop10h 56m

$263

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Tue 9/15

5:18 pm-12:19 pm

1 stop18h 01m

Indianapolis

Tue 9/22

2:31 pm-8:44 pm

1 stop7h 13m

$263

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 14% 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

$97

Fastest flight time

3h 29m

Direct flights

None
The best one-way flight to Indianapolis from St. Louis in the past 72 hours is $97. The best round-trip flight deal from St. Louis to Indianapolis found on momondo in the last 72 hours is $183.
The fastest flight from St. Louis to Indianapolis takes 3h 29m
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 29m, 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 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?

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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