What is the cheapest airline that flies from Lambert-St Louis to Indianapolis?

Frontier is the most popular carrier operating from Lambert-St Louis to Indianapolis

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?

The number of operators available for flights from Lambert-St Louis Airport to Indianapolis Airport is 1 as of February 2026.

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.

$68 Cheap Flights from St. Louis to Indianapolis in 2026

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Find the cheapest flights from St. Louis to Indianapolis

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:49 pm - 8:32 am

STL

IND

15h 43m

1 stop

6:00 am - 10:37 am

IND

STL

53h 37m

2 stops

$176Multiple Airlines

Mon, Mar 2 - Mon, Mar 9

3:49 pm - 8:32 am

STL

IND

15h 43m

1 stop

12:16 pm - 1:19 pm

IND

STL

26h 03m

1 stop

$185Multiple Airlines

Sun, Mar 1 - Sun, Mar 8

8:10 pm - 8:39 am

STL

IND

11h 29m

1 stop

8:33 pm - 9:49 am

IND

STL

14h 16m

1 stop

$198Frontier

Mon, Mar 16 - Tue, Mar 17

8:10 pm - 8:39 am

STL

IND

11h 29m

1 stop

5:08 pm - 10:37 am

IND

STL

18h 29m

2 stops

$210Multiple Airlines

Mon, Mar 16 - Tue, Mar 17

8:00 am - 6:58 pm

STL

IND

9h 58m

1 stop

5:35 am - 1:50 pm

IND

STL

9h 15m

1 stop

$211American Airlines

Sat, Feb 28 - Sat, Mar 7

3:49 pm - 6:31 pm

STL

IND

25h 42m

2 stops

7:31 pm - 6:51 am

IND

STL

12h 20m

1 stop

$216Frontier

Thu, Feb 19 - Sun, Feb 22

3:49 pm - 8:28 pm

STL

IND

27h 39m

1 stop

3:00 pm - 11:19 pm

IND

STL

9h 19m

1 stop

$229Frontier

Mon, Mar 2 - Mon, Mar 9

3:49 pm - 6:31 pm

STL

IND

25h 42m

2 stops

8:33 pm - 9:49 am

IND

STL

14h 16m

1 stop

$235Frontier

Sun, Mar 1 - Sun, Mar 8

3:49 pm - 8:32 am

STL

IND

15h 43m

1 stop

3:12 pm - 11:59 pm

IND

STL

9h 47m

1 stop

$255Multiple Airlines

Tue, Feb 17 - Sat, Feb 21

8:17 pm - 11:25 pm

STL

IND

50h 08m

2 stops

3:12 pm - 11:19 pm

IND

STL

9h 07m

1 stop

$279Multiple Airlines

Sat, Feb 28 - Sat, Mar 7

Frontier flights from St. Louis to Indianapolis

Our best Frontier deals on St. Louis to Indianapolis flight tickets

Frontier

Mar 16

STL8:10 pmLambert-St Louis

11h 29m

1 stop

IND8:39 amIndianapolis

Mar 17

IND8:33 pmIndianapolis

14h 16m

1 stop

STL9:49 amLambert-St Louis

$198

Frontier

Feb 19

STL3:49 pmLambert-St Louis

25h 42m

2 stops

IND6:31 pmIndianapolis

Feb 22

IND7:31 pmIndianapolis

12h 20m

1 stop

STL6:51 amLambert-St Louis

$216

Frontier

Mar 2

STL3:49 pmLambert-St Louis

27h 39m

1 stop

IND8:28 pmIndianapolis

Mar 9

IND3:00 pmIndianapolis

9h 19m

1 stop

STL11:19 pmLambert-St Louis

$229

American Airlines flights from St. Louis to Indianapolis

Our best American Airlines deals on St. Louis to Indianapolis flight tickets

American Airlines

Feb 28

STL8:00 amLambert-St Louis

9h 58m

1 stop

IND6:58 pmIndianapolis

Mar 7

IND5:35 amIndianapolis

9h 15m

1 stop

STL1:50 pmLambert-St Louis

$211

American Airlines

Apr 3

STL8:00 amLambert-St Louis

6h 21m

1 stop

IND3:21 pmIndianapolis

Apr 7

IND7:43 pmIndianapolis

5h 03m

1 stop

STL11:46 pmLambert-St Louis

$419

Fly from

Fly to

Route

Depart

Return

Price

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Mon 3/2

3:49 pm-8:32 am

1 stop15h 43m

Indianapolis

Mon 3/9

6:00 am-10:37 am

2 stops53h 37m

$176

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sun 3/1

3:49 pm-8:32 am

1 stop15h 43m

Indianapolis

Sun 3/8

12:16 pm-1:19 pm

1 stop26h 03m

$185

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Mon 3/16

8:10 pm-8:39 am

1 stop11h 29m

Indianapolis

Tue 3/17

8:33 pm-9:49 am

1 stop14h 16m

$198

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Mon 3/16

8:10 pm-8:39 am

1 stop11h 29m

Indianapolis

Tue 3/17

5:08 pm-10:37 am

2 stops18h 29m

$210

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sat 2/28

8:00 am-6:58 pm

1 stop9h 58m

Indianapolis

Sat 3/7

5:35 am-1:50 pm

1 stop9h 15m

$211

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 2/19

3:49 pm-6:31 pm

2 stops25h 42m

Indianapolis

Sun 2/22

7:31 pm-6:51 am

1 stop12h 20m

$216

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Mon 3/2

3:49 pm-8:28 pm

1 stop27h 39m

Indianapolis

Mon 3/9

3:00 pm-11:19 pm

1 stop9h 19m

$229

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sun 3/1

3:49 pm-6:31 pm

2 stops25h 42m

Indianapolis

Sun 3/8

8:33 pm-9:49 am

1 stop14h 16m

$235

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Tue 2/17

3:49 pm-8:32 am

1 stop15h 43m

Indianapolis

Sat 2/21

3:12 pm-11:59 pm

1 stop9h 47m

$255

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sat 2/28

8:17 pm-11:25 pm

2 stops50h 08m

Indianapolis

Sat 3/7

3:12 pm-11:19 pm

1 stop9h 07m

$279

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

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.

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	0h 55m
Direct flights	Sat
Airports in Indianapolis	1 airport

The fastest flight from St. Louis to Indianapolis takes 0h 55m

Direct flights go from St. Louis to Indianapolis on Saturday. 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 0h 55m, 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?
The number of operators available for flights from Lambert-St Louis Airport to Indianapolis Airport is 1 as of February 2026.
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?
Based on momondo bookings for flights between St. Louis and Indianapolis, the leading airline is American Airlines, making up 100% of the total bookings.

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 Airlines	PriceFrom $185	Free Cancellation	Rating 7.2 11,212 reviews		Search American Airlines flights

Terre Haute

Bloomington

Kokomo

Muncie

Plainfield

Anderson

Greenwood

Noblesville

Fishers

Carmel

Shelbyville

Franklin

West Lafayette

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.