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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 3/11. 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.
Delta Logo
12:28 pm - 7:18 pm
STL
-
IND
5h 50m
1 stop
Delta Logo
7:59 pm - 11:25 pm
IND
-
STL
4h 26m
1 stop
$267Delta
Wed, Mar 18 - Fri, Mar 27
Delta Logo
6:00 am - 12:39 pm
STL
-
IND
5h 39m
1 stop
Delta Logo
7:59 pm - 11:25 pm
IND
-
STL
4h 26m
1 stop
$277Delta
Wed, Mar 18 - Fri, Mar 27
Delta Logo
6:59 pm - 12:20 am
STL
-
IND
4h 21m
1 stop
Delta Logo
7:59 pm - 11:25 pm
IND
-
STL
4h 26m
1 stop
$279Delta
Fri, Mar 13 - Mon, Mar 16
Southwest Logo
5:20 am - 12:25 pm
STL
-
IND
6h 05m
1 stop
Southwest Logo
5:50 pm - 10:10 pm
IND
-
STL
5h 20m
1 stop
$298Southwest
Thu, Mar 19 - Mon, Mar 23
Southwest Logo
4:25 pm - 12:15 am
STL
-
IND
6h 50m
2 stops
Southwest Logo
5:50 pm - 10:10 pm
IND
-
STL
5h 20m
1 stop
$303Southwest
Thu, Mar 19 - Mon, Mar 23
Southwest Logo
8:20 am - 5:10 pm
STL
-
IND
7h 50m
1 stop
Southwest Logo
2:40 pm - 2:40 pm
IND
-
STL
1h 00mnonstop
$307Southwest
Fri, Mar 27 - Fri, Apr 3
United Airlines Logo
6:00 am - 12:52 pm
STL
-
IND
5h 52m
1 stop
United Airlines Logo
6:33 pm - 9:11 pm
IND
-
STL
3h 38m
1 stop
$316United Airlines
Wed, Jun 10 - Sat, Jun 13
Frontier Logo
8:53 pm - 8:12 am
STL
-
IND
10h 19m
1 stop
Frontier Logo
8:33 pm - 9:49 am
IND
-
STL
14h 16m
1 stop
$330Frontier
Sat, Mar 14 - Sun, Mar 15
Southwest Logo
5:40 am - 3:30 pm
STL
-
IND
8h 50m
2 stops
Southwest Logo
7:00 am - 12:20 pm
IND
-
STL
6h 20m
1 stop
$341Southwest
Wed, Jun 10 - Sat, Jun 13
Southwest Logo
5:40 am - 3:30 pm
STL
-
IND
8h 50m
2 stops
Southwest Logo
3:30 pm - 11:10 pm
IND
-
STL
8h 40m
2 stops
$346Southwest
Wed, Jun 10 - Sat, Jun 13

Southwest flights from St. Louis to Indianapolis

Our best Southwest deals on St. Louis to Indianapolis flight tickets
Southwest
Mar 19
STL5:20 amLambert-St Louis
6h 05m
1 stop
IND12:25 pmIndianapolis
Mar 23
IND5:50 pmIndianapolis
5h 20m
1 stop
STL10:10 pmLambert-St Louis
$298
Southwest
Mar 19
STL4:25 pmLambert-St Louis
6h 50m
2 stops
IND12:15 amIndianapolis
Mar 23
IND5:50 pmIndianapolis
5h 20m
1 stop
STL10:10 pmLambert-St Louis
$303
Southwest
Mar 27
STL8:20 amLambert-St Louis
7h 50m
1 stop
IND5:10 pmIndianapolis
Apr 3
IND2:40 pmIndianapolis
1h 00m
STL2:40 pmLambert-St Louis
$307

Frontier flights from St. Louis to Indianapolis

Our best Frontier deals on St. Louis to Indianapolis flight tickets
Frontier
Mar 14
STL8:53 pmLambert-St Louis
10h 19m
1 stop
IND8:12 amIndianapolis
Mar 15
IND8:33 pmIndianapolis
14h 16m
1 stop
STL9:49 amLambert-St Louis
$330
Frontier
Mar 27
STL8:12 pmLambert-St Louis
22h 26m
1 stop
IND7:38 pmIndianapolis
Apr 3
IND4:09 pmIndianapolis
18h 39m
2 stops
STL9:48 amLambert-St Louis
$361
Frontier
Mar 14
STL8:53 pmLambert-St Louis
13h 23m
2 stops
IND11:16 amIndianapolis
Mar 15
IND8:33 pmIndianapolis
14h 16m
1 stop
STL9:49 amLambert-St Louis
$379

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 11, 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

Wed 3/18

12:28 pm-7:18 pm

1 stop5h 50m

Indianapolis

Fri 3/27

7:59 pm-11:25 pm

1 stop4h 26m

$267

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Wed 3/18

6:00 am-12:39 pm

1 stop5h 39m

Indianapolis

Fri 3/27

7:59 pm-11:25 pm

1 stop4h 26m

$277

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Fri 3/13

6:59 pm-12:20 am

1 stop4h 21m

Indianapolis

Mon 3/16

7:59 pm-11:25 pm

1 stop4h 26m

$279

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 3/19

5:20 am-12:25 pm

1 stop6h 05m

Indianapolis

Mon 3/23

5:50 pm-10:10 pm

1 stop5h 20m

$298

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 3/19

4:25 pm-12:15 am

2 stops6h 50m

Indianapolis

Mon 3/23

5:50 pm-10:10 pm

1 stop5h 20m

$303

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Fri 3/27

8:20 am-5:10 pm

1 stop7h 50m

Indianapolis

Fri 4/3

2:40 pm-2:40 pm

Nonstop1h 00m

$307

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Wed 6/10

6:00 am-12:52 pm

1 stop5h 52m

Indianapolis

Sat 6/13

6:33 pm-9:11 pm

1 stop3h 38m

$316

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sat 3/14

8:53 pm-8:12 am

1 stop10h 19m

Indianapolis

Sun 3/15

8:33 pm-9:49 am

1 stop14h 16m

$330

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Wed 6/10

5:40 am-3:30 pm

2 stops8h 50m

Indianapolis

Sat 6/13

7:00 am-12:20 pm

1 stop6h 20m

$341

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Wed 6/10

5:40 am-3:30 pm

2 stops8h 50m

Indianapolis

Sat 6/13

3:30 pm-11:10 pm

2 stops8h 40m

$346

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

3h 31m

Direct flights

Wed

Airports in Indianapolis

1 airport
The fastest flight from St. Louis to Indianapolis takes 3h 31m
Direct flights go from St. Louis to Indianapolis on Wednesday. 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 3h 31m, 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
11,262 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
Franklin
West Lafayette
Seymour
Brownsburg
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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