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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 11/17. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
4:13 pm - 8:08 amSTL-IND
14h 55m1 stop
Multiple Airlines Logo
11:23 am - 2:29 pmIND-STL
28h 06m1 stop
$218Multiple Airlines
Find Deal
Thu, Nov 20 - Mon, Nov 24
Multiple Airlines Logo
4:13 pm - 8:47 amSTL-IND
15h 34m1 stop
Multiple Airlines Logo
5:00 am - 6:19 pmIND-STL
14h 19m2 stops
$231Multiple Airlines
Find Deal
Thu, Nov 20 - Mon, Nov 24
Multiple Airlines Logo
4:13 pm - 8:47 amSTL-IND
15h 34m1 stop
Multiple Airlines Logo
5:00 am - 6:19 pmIND-STL
14h 19m2 stops
$239Multiple Airlines
Find Deal
Thu, Nov 20 - Mon, Nov 24
Delta Logo
6:00 am - 12:39 pmSTL-IND
5h 39m1 stop
Delta Logo
6:15 am - 9:38 amIND-STL
4h 23m1 stop
$257Delta
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Sat, Feb 28 - Tue, Mar 3
Frontier Logo
7:43 pm - 10:19 amSTL-IND
13h 36m2 stops
Frontier Logo
9:55 pm - 6:19 pmIND-STL
21h 24m1 stop
$260Frontier
Find Deal
Fri, Nov 21 - Sun, Nov 23
United Airlines Logo
10:00 am - 4:29 pmSTL-IND
5h 29m1 stop
United Airlines Logo
9:35 am - 12:15 pmIND-STL
3h 40m1 stop
$268United Airlines
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Wed, Dec 3 - Thu, Dec 4
Frontier Logo
3:30 pm - 11:24 amSTL-IND
18h 54m1 stop
Frontier Logo
8:48 pm - 10:02 amIND-STL
14h 14m1 stop
$294Frontier
Find Deal
Fri, Dec 12 - Sun, Dec 21
Delta Logo
10:45 am - 5:29 pmSTL-IND
5h 44m1 stop
Delta Logo
8:00 am - 1:51 pmIND-STL
6h 51m1 stop
$318Delta
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Thu, Nov 27 - Sat, Nov 29
United Airlines Logo
10:00 am - 7:16 pmSTL-IND
8h 16m2 stops
United Airlines Logo
4:30 pm - 9:40 pmIND-STL
6h 10m1 stop
$489United Airlines
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Thu, Nov 27 - Sat, Nov 29
American Airlines Logo
7:05 pm - 12:03 amSTL-IND
3h 58m1 stop
American Airlines Logo
8:15 pm - 11:32 pmIND-STL
4h 17m1 stop
$669American Airlines
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Thu, Mar 12 - Mon, Mar 23

United Airlines flights from St. Louis to Indianapolis

Our best United Airlines deals on St. Louis to Indianapolis flight tickets
United Airlines
Dec 3
STL10:00 amLambert-St Louis
5h 29m
1 stop
IND4:29 pmIndianapolis
Dec 4
IND9:35 amIndianapolis
3h 40m
1 stop
STL12:15 pmLambert-St Louis
$268
Find similar
United Airlines
Nov 18
STL11:05 amLambert-St Louis
5h 44m
1 stop
IND5:49 pmIndianapolis
Nov 22
IND5:44 pmIndianapolis
4h 56m
1 stop
STL9:40 pmLambert-St Louis
$417
Find similar
United Airlines
Nov 27
STL10:00 amLambert-St Louis
8h 16m
2 stops
IND7:16 pmIndianapolis
Nov 29
IND4:30 pmIndianapolis
6h 10m
1 stop
STL9:40 pmLambert-St Louis
$489
Find similar

Frontier flights from St. Louis to Indianapolis

Our best Frontier deals on St. Louis to Indianapolis flight tickets
Frontier
Nov 13
STL11:07 amLambert-St Louis
8h 58m
2 stops
IND9:05 pmIndianapolis
Nov 16
IND10:21 pmIndianapolis
12h 19m
1 stop
STL9:40 amLambert-St Louis
$203
Find similar
Frontier
Nov 13
STL2:12 pmLambert-St Louis
28h 32m
2 stops
IND7:44 pmIndianapolis
Nov 16
IND10:21 pmIndianapolis
12h 19m
1 stop
STL9:40 amLambert-St Louis
$248
Find similar
Frontier
Nov 21
STL7:43 pmLambert-St Louis
13h 36m
2 stops
IND10:19 amIndianapolis
Nov 23
IND9:55 pmIndianapolis
21h 24m
1 stop
STL6:19 pmLambert-St Louis
$260
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 November 6, 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

Thu 11/20

4:13 pm-8:08 am

1 stop14h 55m

Indianapolis

Mon 11/24

11:23 am-2:29 pm

1 stop28h 06m

$218

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 11/20

4:13 pm-8:47 am

1 stop15h 34m

Indianapolis

Mon 11/24

5:00 am-6:19 pm

2 stops14h 19m

$231

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 11/20

4:13 pm-8:47 am

1 stop15h 34m

Indianapolis

Mon 11/24

5:00 am-6:19 pm

2 stops14h 19m

$239

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sat 2/28

6:00 am-12:39 pm

1 stop5h 39m

Indianapolis

Tue 3/3

6:15 am-9:38 am

1 stop4h 23m

$257

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Fri 11/21

7:43 pm-10:19 am

2 stops13h 36m

Indianapolis

Sun 11/23

9:55 pm-6:19 pm

1 stop21h 24m

$260

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Wed 12/3

10:00 am-4:29 pm

1 stop5h 29m

Indianapolis

Thu 12/4

9:35 am-12:15 pm

1 stop3h 40m

$268

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Fri 12/12

3:30 pm-11:24 am

1 stop18h 54m

Indianapolis

Sun 12/21

8:48 pm-10:02 am

1 stop14h 14m

$294

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 11/27

10:45 am-5:29 pm

1 stop5h 44m

Indianapolis

Sat 11/29

8:00 am-1:51 pm

1 stop6h 51m

$318

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 11/27

10:00 am-7:16 pm

2 stops8h 16m

Indianapolis

Sat 11/29

4:30 pm-9:40 pm

1 stop6h 10m

$489

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 3/12

7:05 pm-12:03 am

1 stop3h 58m

Indianapolis

Mon 3/23

8:15 pm-11:32 pm

1 stop4h 17m

$669

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, 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 November 2025, prices for St. Louis to Indianapolis flights are approximately 56% 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

Direct flights

None
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 3h 27m, 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
11,040 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
Crawfordsville
Brownsburg
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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