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 January 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.

$128 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

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:12 pm - 7:06 pm

STL

IND

5h 54m1 stop

8:01 pm - 8:04 am

IND

STL

13h 03m1 stop

$128Frontier

Sat, Jan 31 - Sat, Feb 7

3:49 pm - 12:28 pm

STL

IND

19h 39m1 stop

5:59 pm - 11:59 pm

IND

STL

7h 00m1 stop

$169Frontier

Tue, Feb 24 - Thu, Feb 26

5:42 pm - 1:15 pm

STL

IND

18h 33m1 stop

8:26 pm - 11:11 am

IND

STL

15h 45m2 stops

$183Multiple Airlines

Wed, Jan 28 - Fri, Jan 30

5:42 pm - 9:43 am

STL

IND

15h 01m1 stop

5:34 pm - 11:11 am

IND

STL

18h 37m1 stop

$184Multiple Airlines

Wed, Jan 28 - Fri, Jan 30

12:12 pm - 9:43 am

STL

IND

20h 31m1 stop

12:21 pm - 11:33 pm

IND

STL

12h 12m1 stop

$188Multiple Airlines

Sat, Jan 31 - Sat, Feb 7

3:49 pm - 7:23 pm

STL

IND

26h 34m2 stops

5:59 pm - 11:59 pm

IND

STL

7h 00m1 stop

$201Multiple Airlines

Tue, Feb 24 - Thu, Feb 26

12:12 pm - 11:43 am

STL

IND

22h 31m2 stops

10:38 am - 11:33 pm

IND

STL

13h 55m1 stop

$226Multiple Airlines

Sat, Jan 31 - Sat, Feb 7

10:11 pm - 8:02 pm

STL

IND

20h 51m2 stops

3:12 pm - 11:59 pm

IND

STL

9h 47m1 stop

$232Multiple Airlines

Thu, Feb 19 - Thu, Feb 26

10:11 pm - 5:57 pm

STL

IND

18h 46m1 stop

5:59 pm - 11:59 pm

IND

STL

7h 00m1 stop

$255Multiple Airlines

Thu, Feb 19 - Thu, Feb 26

3:49 pm - 8:32 am

STL

IND

15h 43m1 stop

3:12 pm - 12:27 am

IND

STL

10h 15m1 stop

$263Multiple Airlines

Thu, Feb 19 - Fri, Feb 20

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

IND6:13 amIndianapolis

4h 33m

1 stop

STL9:46 amLambert-St Louis

$276

Find similar

Delta

Mar 18

STL7:03 amLambert-St Louis

4h 36m

1 stop

IND12:39 pmIndianapolis

Mar 27

IND6:13 amIndianapolis

4h 33m

1 stop

STL9:46 amLambert-St Louis

$316

Find similar

Delta

Jan 20

STL6:10 amLambert-St Louis

4h 37m

1 stop

IND11:47 amIndianapolis

Jan 24

IND6:43 pmIndianapolis

5h 53m

1 stop

STL11:36 pmLambert-St Louis

$320

Find similar

Southwest flights from St. Louis to Indianapolis

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

Southwest

Jan 28

STL10:15 amLambert-St Louis

6h 45m

2 stops

IND6:00 pmIndianapolis

Jan 30

IND10:30 amIndianapolis

9h 35m

2 stops

STL7:05 pmLambert-St Louis

$277

Find similar

Southwest

Feb 24

STL6:05 amLambert-St Louis

9h 40m

2 stops

IND4:45 pmIndianapolis

Feb 26

IND2:00 pmIndianapolis

8h 35m

2 stops

STL9:35 pmLambert-St Louis

$298

Find similar

Southwest

Feb 19

STL2:55 pmLambert-St Louis

7h 10m

2 stops

IND11:05 pmIndianapolis

Feb 20

IND5:50 amIndianapolis

7h 10m

1 stop

STL12:00 pmLambert-St Louis

$309

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sat 1/31

12:12 pm-7:06 pm

1 stop5h 54m

Indianapolis

Sat 2/7

8:01 pm-8:04 am

1 stop13h 03m

$128

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Tue 2/24

3:49 pm-12:28 pm

1 stop19h 39m

Indianapolis

Thu 2/26

5:59 pm-11:59 pm

1 stop7h 00m

$169

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Wed 1/28

5:42 pm-1:15 pm

1 stop18h 33m

Indianapolis

Fri 1/30

8:26 pm-11:11 am

2 stops15h 45m

$183

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Wed 1/28

5:42 pm-9:43 am

1 stop15h 01m

Indianapolis

Fri 1/30

5:34 pm-11:11 am

1 stop18h 37m

$184

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sat 1/31

12:12 pm-9:43 am

1 stop20h 31m

Indianapolis

Sat 2/7

12:21 pm-11:33 pm

1 stop12h 12m

$188

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Tue 2/24

3:49 pm-7:23 pm

2 stops26h 34m

Indianapolis

Thu 2/26

5:59 pm-11:59 pm

1 stop7h 00m

$201

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sat 1/31

12:12 pm-11:43 am

2 stops22h 31m

Indianapolis

Sat 2/7

10:38 am-11:33 pm

1 stop13h 55m

$226

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 2/19

10:11 pm-8:02 pm

2 stops20h 51m

Indianapolis

Thu 2/26

3:12 pm-11:59 pm

1 stop9h 47m

$232

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 2/19

10:11 pm-5:57 pm

1 stop18h 46m

Indianapolis

Thu 2/26

5:59 pm-11:59 pm

1 stop7h 00m

$255

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 2/19

3:49 pm-8:32 am

1 stop15h 43m

Indianapolis

Fri 2/20

3:12 pm-12:27 am

1 stop10h 15m

$263

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 January 2026, prices for St. Louis to Indianapolis flights are approximately 36% 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 39m
Direct flights	None

The fastest flight from St. Louis to Indianapolis takes 3h 39m

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 39m, 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 January 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 11,083 reviews		Search American Airlines flights

Terre Haute

Bloomington

Kokomo

Muncie

Plainfield

Anderson

Greenwood

Noblesville

Fishers

Carmel

Shelbyville

Franklin

West Lafayette

Seymour

Brownsburg

Crawfordsville

Speedway

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.