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Cheap flights from St. Louis to Indianapolis from $102

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 12/8. 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
8:22 pm - 11:43 am
STL
-
IND
14h 21m1 stop
Frontier Logo
12:38 pm - 10:02 am
IND
-
STL
46h 24m2 stops
$176Frontier
Wed, Feb 4 - Mon, Feb 9
American Airlines Logo
6:52 am - 12:22 pm
STL
-
IND
4h 30m1 stop
American Airlines Logo
7:01 am - 10:20 am
IND
-
STL
4h 19m1 stop
$177American Airlines
Wed, Feb 4 - Mon, Feb 9
Multiple Airlines Logo
5:11 pm - 9:43 am
STL
-
IND
15h 32m1 stop
Multiple Airlines Logo
8:55 pm - 10:02 am
IND
-
STL
14h 07m1 stop
$180Multiple Airlines
Fri, Jan 9 - Sun, Jan 11
Delta Logo
7:10 am - 12:31 pm
STL
-
IND
4h 21m1 stop
Delta Logo
5:54 pm - 8:43 pm
IND
-
STL
3h 49m1 stop
$195Delta
Thu, Jan 8 - Mon, Jan 12
Delta Logo
7:10 am - 5:11 pm
STL
-
IND
9h 01m2 stops
Delta Logo
5:54 pm - 8:43 pm
IND
-
STL
3h 49m1 stop
$201Delta
Sat, Jan 24 - Mon, Jan 26
Delta Logo
7:10 am - 2:24 pm
STL
-
IND
6h 14m1 stop
Delta Logo
3:29 pm - 8:41 pm
IND
-
STL
6h 12m1 stop
$215Delta
Thu, Feb 19 - Fri, Feb 20
Multiple Airlines Logo
7:43 pm - 9:43 am
STL
-
IND
13h 00m2 stops
Multiple Airlines Logo
8:55 pm - 10:02 am
IND
-
STL
14h 07m1 stop
$222Multiple Airlines
Fri, Jan 9 - Sun, Jan 11
Multiple Airlines Logo
10:42 am - 8:32 am
STL
-
IND
20h 50m2 stops
Multiple Airlines Logo
12:43 pm - 10:33 pm
IND
-
STL
10h 50m1 stop
$225Multiple Airlines
Thu, Feb 19 - Fri, Feb 20
Multiple Airlines Logo
10:48 am - 5:44 pm
STL
-
IND
5h 56m1 stop
Multiple Airlines Logo
5:15 am - 10:33 pm
IND
-
STL
18h 18m1 stop
$238Multiple Airlines
Tue, Dec 30 - Tue, Jan 6
Frontier Logo
7:43 pm - 7:53 pm
STL
-
IND
23h 10m1 stop
Frontier Logo
8:48 pm - 10:02 am
IND
-
STL
14h 14m1 stop
$241Frontier
Wed, Dec 17 - Sun, Dec 21

Delta flights from St. Louis to Indianapolis

Our best Delta deals on St. Louis to Indianapolis flight tickets
Delta
Jan 8
STL7:10 amLambert-St Louis
4h 21m
1 stop
IND12:31 pmIndianapolis
Jan 12
IND5:54 pmIndianapolis
3h 49m
1 stop
STL8:43 pmLambert-St Louis
$195
Find similar
Delta
Jan 24
STL7:10 amLambert-St Louis
9h 01m
2 stops
IND5:11 pmIndianapolis
Jan 26
IND5:54 pmIndianapolis
3h 49m
1 stop
STL8:43 pmLambert-St Louis
$201
Find similar
Delta
Feb 19
STL7:10 amLambert-St Louis
6h 14m
1 stop
IND2:24 pmIndianapolis
Feb 20
IND3:29 pmIndianapolis
6h 12m
1 stop
STL8:41 pmLambert-St Louis
$215
Find similar

Southwest flights from St. Louis to Indianapolis

Our best Southwest deals on St. Louis to Indianapolis flight tickets
Southwest
Jan 24
STL7:00 amLambert-St Louis
8h 10m
2 stops
IND4:10 pmIndianapolis
Jan 26
IND7:00 amIndianapolis
6h 45m
2 stops
STL12:45 pmLambert-St Louis
$247
Find similar
Southwest
Feb 4
STL10:15 amLambert-St Louis
6h 45m
2 stops
IND6:00 pmIndianapolis
Feb 9
IND12:25 pmIndianapolis
11h 15m
2 stops
STL10:40 pmLambert-St Louis
$251
Find similar
Southwest
Feb 19
STL1:05 pmLambert-St Louis
8h 45m
2 stops
IND10:50 pmIndianapolis
Feb 20
IND9:55 amIndianapolis
8h 20m
2 stops
STL5:15 pmLambert-St Louis
$253
Find similar

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 December 4, 2025.
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

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Wed 2/4

8:22 pm-11:43 am

1 stop14h 21m

Indianapolis

Mon 2/9

12:38 pm-10:02 am

2 stops46h 24m

$176

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Wed 2/4

6:52 am-12:22 pm

1 stop4h 30m

Indianapolis

Mon 2/9

7:01 am-10:20 am

1 stop4h 19m

$177

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Fri 1/9

5:11 pm-9:43 am

1 stop15h 32m

Indianapolis

Sun 1/11

8:55 pm-10:02 am

1 stop14h 07m

$180

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 1/8

7:10 am-12:31 pm

1 stop4h 21m

Indianapolis

Mon 1/12

5:54 pm-8:43 pm

1 stop3h 49m

$195

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sat 1/24

7:10 am-5:11 pm

2 stops9h 01m

Indianapolis

Mon 1/26

5:54 pm-8:43 pm

1 stop3h 49m

$201

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 2/19

7:10 am-2:24 pm

1 stop6h 14m

Indianapolis

Fri 2/20

3:29 pm-8:41 pm

1 stop6h 12m

$215

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Fri 1/9

7:43 pm-9:43 am

2 stops13h 00m

Indianapolis

Sun 1/11

8:55 pm-10:02 am

1 stop14h 07m

$222

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 2/19

10:42 am-8:32 am

2 stops20h 50m

Indianapolis

Fri 2/20

12:43 pm-10:33 pm

1 stop10h 50m

$225

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Tue 12/30

10:48 am-5:44 pm

1 stop5h 56m

Indianapolis

Tue 1/6

5:15 am-10:33 pm

1 stop18h 18m

$238

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Wed 12/17

7:43 pm-7:53 pm

1 stop23h 10m

Indianapolis

Sun 12/21

8:48 pm-10:02 am

1 stop14h 14m

$241

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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, April 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 $226. If you are unable to visit Indianapolis during the month of April, 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 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.

What is the cheapest time of day to depart on your flight to Indianapolis?

Flying to Indianapolis from St. Louis at noon is the least expensive time of day to depart. momondo users have found prices as low as $256 when looking at flights departing at noon. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $1,297 on average. Flights to Indianapolis from St. Louis in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

As of December 2025, prices for St. Louis to Indianapolis flights are approximately 49% 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

4h 00m

Direct flights

None
The fastest flight from St. Louis to Indianapolis takes 4h 00m
There are no direct flights from St. Louis to Indianapolis. There are no popular flight routes from St. Louis to Indianapolis.
Search flight deals

  • 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 4h 04m, 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 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 $226Free CancellationRating
7.2
11,047 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
Anderson
Plainfield
Greenwood
Noblesville
Fishers
Carmel
Shelbyville
West Lafayette
Seymour
Franklin
Speedway
Brownsburg
Crawfordsville
Greenfield
Westfield
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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