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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 8/13. 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
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
10:35 am - 11:44 am
STL
-
IND
24h 09m
1 stop
Frontier Logo
12:39 pm - 9:40 am
IND
-
STL
22h 01m
1 stop
$159Frontier
Wed, Oct 21 - Sun, Oct 25
Frontier Logo
6:34 pm - 11:25 am
STL
-
IND
15h 51m
1 stop
Frontier Logo
9:59 pm - 5:22 pm
IND
-
STL
20h 23m
2 stops
$188Frontier
Sun, Aug 16 - Sun, Aug 23
Frontier Logo
6:34 pm - 11:25 am
STL
-
IND
15h 51m
1 stop
Frontier Logo
9:59 pm - 5:22 pm
IND
-
STL
20h 23m
2 stops
$195Frontier
Thu, Aug 13 - Thu, Aug 20
Frontier Logo
6:34 pm - 11:25 am
STL
-
IND
15h 51m
1 stop
Frontier Logo
12:20 pm - 8:57 am
IND
-
STL
21h 37m
1 stop
$203Frontier
Sun, Aug 2 - Fri, Aug 7
Frontier Logo
6:34 pm - 11:25 am
STL
-
IND
15h 51m
1 stop
Frontier Logo
12:20 pm - 8:57 am
IND
-
STL
21h 37m
1 stop
$205Frontier
Sun, Aug 2 - Fri, Aug 7
Frontier Logo
6:34 pm - 11:25 am
STL
-
IND
15h 51m
1 stop
Frontier Logo
10:00 pm - 2:56 pm
IND
-
STL
17h 56m
1 stop
$207Frontier
Sun, Aug 9 - Wed, Aug 12
Multiple Airlines Logo
10:35 am - 11:44 am
STL
-
IND
24h 09m
1 stop
Multiple Airlines Logo
2:17 pm - 9:40 am
IND
-
STL
20h 23m
2 stops
$212Multiple Airlines
Wed, Oct 21 - Sun, Oct 25
Frontier Logo
6:34 pm - 11:25 am
STL
-
IND
15h 51m
1 stop
Frontier Logo
12:20 pm - 8:57 am
IND
-
STL
21h 37m
1 stop
$225Frontier
Sun, Aug 2 - Fri, Aug 7
Frontier Logo
6:34 pm - 11:25 am
STL
-
IND
15h 51m
1 stop
Frontier Logo
12:20 pm - 8:57 am
IND
-
STL
21h 37m
1 stop
$227Frontier
Sun, Aug 2 - Fri, Aug 7
Frontier Logo
6:34 pm - 11:25 am
STL
-
IND
15h 51m
1 stop
Frontier Logo
8:53 pm - 5:37 pm
IND
-
STL
21h 44m
2 stops
$229Frontier
Sun, Aug 9 - Mon, Aug 10

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Southwest flights from St. Louis to Indianapolis

Our best Southwest deals on St. Louis to Indianapolis flight tickets
Southwest
Aug 13
STL11:40 amLambert-St Louis
8h 45m
2 stops
IND9:25 pmIndianapolis
Aug 20
IND5:45 amIndianapolis
8h 20m
1 stop
STL1:05 pmLambert-St Louis
$238
Southwest
Aug 15
STL10:10 amLambert-St Louis
8h 00m
1 stop
IND7:10 pmIndianapolis
Aug 22
IND3:20 pmIndianapolis
5h 25m
1 stop
STL7:45 pmLambert-St Louis
$246
Southwest
Aug 15
STL5:45 amLambert-St Louis
6h 40m
2 stops
IND1:25 pmIndianapolis
Aug 22
IND5:50 amIndianapolis
6h 00m
1 stop
STL10:50 amLambert-St Louis
$251

Frontier flights from St. Louis to Indianapolis

Our best Frontier deals on St. Louis to Indianapolis flight tickets
Frontier
Oct 21
STL10:35 amLambert-St Louis
24h 09m
1 stop
IND11:44 amIndianapolis
Oct 25
IND12:39 pmIndianapolis
22h 01m
1 stop
STL9:40 amLambert-St Louis
$159
Frontier
Aug 16
STL6:34 pmLambert-St Louis
15h 51m
1 stop
IND11:25 amIndianapolis
Aug 23
IND9:59 pmIndianapolis
20h 23m
2 stops
STL5:22 pmLambert-St Louis
$188
Frontier
Aug 13
STL6:34 pmLambert-St Louis
15h 51m
1 stop
IND11:25 amIndianapolis
Aug 20
IND9:59 pmIndianapolis
20h 23m
2 stops
STL5:22 pmLambert-St Louis
$195

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 July 19, 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

Wed 10/21

10:35 am-11:44 am

1 stop24h 09m

Indianapolis

Sun 10/25

12:39 pm-9:40 am

1 stop22h 01m

$159

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sun 8/16

6:34 pm-11:25 am

1 stop15h 51m

Indianapolis

Sun 8/23

9:59 pm-5:22 pm

2 stops20h 23m

$188

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 8/13

6:34 pm-11:25 am

1 stop15h 51m

Indianapolis

Thu 8/20

9:59 pm-5:22 pm

2 stops20h 23m

$195

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sun 8/2

6:34 pm-11:25 am

1 stop15h 51m

Indianapolis

Fri 8/7

12:20 pm-8:57 am

1 stop21h 37m

$203

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sun 8/2

6:34 pm-11:25 am

1 stop15h 51m

Indianapolis

Fri 8/7

12:20 pm-8:57 am

1 stop21h 37m

$205
Quickest round-trip

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sun 8/9

6:34 pm-11:25 am

1 stop15h 51m

Indianapolis

Wed 8/12

10:00 pm-2:56 pm

1 stop17h 56m

$207

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Wed 10/21

10:35 am-11:44 am

1 stop24h 09m

Indianapolis

Sun 10/25

2:17 pm-9:40 am

2 stops20h 23m

$212

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sun 8/2

6:34 pm-11:25 am

1 stop15h 51m

Indianapolis

Fri 8/7

12:20 pm-8:57 am

1 stop21h 37m

$225

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sun 8/2

6:34 pm-11:25 am

1 stop15h 51m

Indianapolis

Fri 8/7

12:20 pm-8:57 am

1 stop21h 37m

$227

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sun 8/9

6:34 pm-11:25 am

1 stop15h 51m

Indianapolis

Mon 8/10

8:53 pm-5:37 pm

2 stops21h 44m

$229

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 August is also very affordable. Most momondo users find prices during this month for around $234.

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 July 2026, prices for St. Louis to Indianapolis flights are approximately 3% 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 50m

Direct flights

None
The fastest flight from St. Louis to Indianapolis takes 3h 50m
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 50m, 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
Anderson
Plainfield
Greenwood
Noblesville
Carmel
Fishers
Franklin
Shelbyville
Speedway
West Lafayette
Seymour
Westfield
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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