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Cheap flights from St. Louis to Indianapolis from $68

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 3/4. 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
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.
Multiple Airlines Logo
12:16 pm - 11:15 pm
STL
-
IND
33h 59m
2 stops
Multiple Airlines Logo
3:00 pm - 10:32 am
IND
-
STL
20h 32m
1 stop
$169Multiple Airlines
Mon, Mar 23 - Mon, Mar 30
Multiple Airlines Logo
12:16 pm - 11:15 pm
STL
-
IND
33h 59m
2 stops
Multiple Airlines Logo
3:00 pm - 10:32 am
IND
-
STL
20h 32m
1 stop
$171Multiple Airlines
Mon, Mar 23 - Mon, Mar 30
Frontier Logo
11:21 am - 11:17 am
STL
-
IND
22h 56m
1 stop
Frontier Logo
12:12 pm - 6:50 am
IND
-
STL
19h 38m
1 stop
$172Frontier
Thu, Apr 16 - Thu, Apr 23
Multiple Airlines Logo
12:16 pm - 11:15 pm
STL
-
IND
33h 59m
2 stops
Multiple Airlines Logo
3:00 pm - 10:32 am
IND
-
STL
20h 32m
1 stop
$186Multiple Airlines
Mon, Mar 23 - Mon, Mar 30
Frontier Logo
8:12 pm - 7:38 pm
STL
-
IND
22h 26m
1 stop
Frontier Logo
3:00 pm - 10:32 am
IND
-
STL
20h 32m
1 stop
$188Frontier
Mon, Mar 23 - Mon, Mar 30
Frontier Logo
8:12 pm - 7:38 pm
STL
-
IND
22h 26m
1 stop
Frontier Logo
3:00 pm - 10:32 am
IND
-
STL
20h 32m
1 stop
$190Frontier
Mon, Mar 23 - Mon, Mar 30
Frontier Logo
3:49 pm - 6:31 pm
STL
-
IND
25h 42m
2 stops
Frontier Logo
7:27 pm - 6:51 am
IND
-
STL
12h 24m
1 stop
$229Frontier
Sun, Feb 22 - Thu, Feb 26
Frontier Logo
11:21 am - 8:08 am
STL
-
IND
19h 47m
2 stops
Frontier Logo
12:12 pm - 6:50 am
IND
-
STL
19h 38m
1 stop
$233Frontier
Thu, Apr 16 - Thu, Apr 23
Frontier Logo
3:49 pm - 9:21 am
STL
-
IND
16h 32m
1 stop
Frontier Logo
12:16 pm - 1:34 pm
IND
-
STL
26h 18m
1 stop
$255Frontier
Thu, Mar 5 - Thu, Mar 12
Frontier Logo
10:11 pm - 7:38 pm
STL
-
IND
20h 27m
2 stops
Frontier Logo
12:16 pm - 1:34 pm
IND
-
STL
26h 18m
1 stop
$258Frontier
Thu, Mar 5 - Thu, Mar 12

Delta flights from St. Louis to Indianapolis

Our best Delta deals on St. Louis to Indianapolis flight tickets
Delta
Mar 18
STL6:32 amLambert-St Louis
3h 39m
1 stop
IND11:11 amIndianapolis
Mar 27
IND7:59 pmIndianapolis
4h 26m
1 stop
STL11:25 pmLambert-St Louis
$267
Delta
Mar 13
STL6:59 pmLambert-St Louis
4h 21m
1 stop
IND12:20 amIndianapolis
Mar 16
IND7:00 pmIndianapolis
5h 58m
1 stop
STL11:58 pmLambert-St Louis
$279
Delta
Feb 15
STL7:10 amLambert-St Louis
6h 14m
1 stop
IND2:24 pmIndianapolis
Feb 17
IND3:40 pmIndianapolis
6h 03m
1 stop
STL8:43 pmLambert-St Louis
$587

United Airlines flights from St. Louis to Indianapolis

Our best United Airlines deals on St. Louis to Indianapolis flight tickets
United Airlines
Jun 20
STL9:23 amLambert-St Louis
6h 07m
1 stop
IND4:30 pmIndianapolis
Jun 27
IND7:59 pmIndianapolis
3h 45m
1 stop
STL10:44 pmLambert-St Louis
$317
United Airlines
Feb 24
STL7:00 amLambert-St Louis
5h 50m
1 stop
IND1:50 pmIndianapolis
Feb 25
IND4:05 pmIndianapolis
6h 35m
1 stop
STL9:40 pmLambert-St Louis
$396
United Airlines
Feb 23
STL6:55 pmLambert-St Louis
3h 49m
1 stop
IND11:44 pmIndianapolis
Feb 24
IND6:10 pmIndianapolis
3h 55m
1 stop
STL9:05 pmLambert-St Louis
$417

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 February 9, 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

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Mon 3/23

12:16 pm-11:15 pm

2 stops33h 59m

Indianapolis

Mon 3/30

3:00 pm-10:32 am

1 stop20h 32m

$169

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Mon 3/23

12:16 pm-11:15 pm

2 stops33h 59m

Indianapolis

Mon 3/30

3:00 pm-10:32 am

1 stop20h 32m

$171

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 4/16

11:21 am-11:17 am

1 stop22h 56m

Indianapolis

Thu 4/23

12:12 pm-6:50 am

1 stop19h 38m

$172

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Mon 3/23

12:16 pm-11:15 pm

2 stops33h 59m

Indianapolis

Mon 3/30

3:00 pm-10:32 am

1 stop20h 32m

$186

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Mon 3/23

8:12 pm-7:38 pm

1 stop22h 26m

Indianapolis

Mon 3/30

3:00 pm-10:32 am

1 stop20h 32m

$188

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Mon 3/23

8:12 pm-7:38 pm

1 stop22h 26m

Indianapolis

Mon 3/30

3:00 pm-10:32 am

1 stop20h 32m

$190

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sun 2/22

3:49 pm-6:31 pm

2 stops25h 42m

Indianapolis

Thu 2/26

7:27 pm-6:51 am

1 stop12h 24m

$229

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 4/16

11:21 am-8:08 am

2 stops19h 47m

Indianapolis

Thu 4/23

12:12 pm-6:50 am

1 stop19h 38m

$233

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 3/5

3:49 pm-9:21 am

1 stop16h 32m

Indianapolis

Thu 3/12

12:16 pm-1:34 pm

1 stop26h 18m

$255

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 3/5

10:11 pm-7:38 pm

2 stops20h 27m

Indianapolis

Thu 3/12

12:16 pm-1:34 pm

1 stop26h 18m

$258

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, August 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 $234. If you are unable to visit Indianapolis during the month of August, then departing from St. Louis during the month September is also very affordable. Most momondo users find prices during this month for around $235.

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.

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

As of February 2026, prices for St. Louis to Indianapolis flights are approximately 52% 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 30m

Direct flights

Mon, Wed and Fri

Airports in Indianapolis

1 airport
The fastest flight from St. Louis to Indianapolis takes 4h 30m
Direct flights go from St. Louis to Indianapolis on Monday, Wednesday and Friday. There are no airlines offering direct flights.
There is 1 airport in Indianapolis. From St. Louis there are direct flights to Indianapolis (IND).
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 30m, 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 $185Free CancellationRating
7.2
11,254 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
Plainfield
Anderson
Greenwood
Noblesville
Fishers
Carmel
Shelbyville
West Lafayette
Franklin
Brownsburg
Seymour
Speedway
Crawfordsville
Westfield
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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