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.

$77 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.

5:42 pm - 9:43 am

STL

IND

15h 01m

1 stop

7:41 pm - 6:51 am

IND

STL

12h 10m

1 stop

$217Multiple Airlines

lun., feb. 9 - vie., feb. 13

7:10 am - 2:24 pm

STL

IND

6h 14m

1 stop

6:15 am - 9:32 am

IND

STL

4h 17m

1 stop

$267Delta

mar., feb. 17 - jue., feb. 19

5:42 pm - 6:38 pm

STL

IND

23h 56m

1 stop

7:27 pm - 12:27 am

IND

STL

30h 00m

2 stops

$285Frontier

dom., feb. 8 - jue., feb. 12

8:17 pm - 2:17 pm

STL

IND

17h 00m

2 stops

7:27 pm - 6:51 am

IND

STL

12h 24m

1 stop

$289Multiple Airlines

mié., feb. 11 - jue., feb. 12

6:35 am - 11:28 am

STL

IND

3h 53m

1 stop

12:08 pm - 4:42 pm

IND

STL

5h 34m

1 stop

$296Delta

dom., feb. 15 - mar., feb. 17

7:03 am - 12:39 pm

STL

IND

4h 36m

1 stop

7:59 pm - 11:25 pm

IND

STL

4h 26m

1 stop

$298Delta

mié., mar. 18 - vie., mar. 27

5:42 pm - 6:38 pm

STL

IND

23h 56m

1 stop

7:27 pm - 6:51 am

IND

STL

12h 24m

1 stop

$314Frontier

dom., feb. 8 - jue., feb. 12

9:55 am - 4:49 pm

STL

IND

5h 54m

1 stop

4:05 pm - 9:40 pm

IND

STL

6h 35m

1 stop

$315United Airlines

mar., feb. 24 - mié., feb. 25

6:32 am - 11:11 am

STL

IND

3h 39m

1 stop

7:00 pm - 11:58 pm

IND

STL

5h 58m

1 stop

$317Delta

vie., mar. 20 - lun., mar. 23

5:50 pm - 12:07 am

STL

IND

5h 17m

1 stop

6:22 pm - 11:36 pm

IND

STL

6h 14m

1 stop

$327Delta

vie., feb. 20 - dom., feb. 22

Delta flights from St. Louis to Indianapolis

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

Delta

Feb 17

STL7:10 amLambert-St Louis

6h 14m

1 stop

IND2:24 pmIndianapolis

Feb 19

IND6:15 amIndianapolis

4h 17m

1 stop

STL9:32 amLambert-St Louis

$267

Delta

Feb 15

STL6:35 amLambert-St Louis

3h 53m

1 stop

IND11:28 amIndianapolis

Feb 17

IND12:08 pmIndianapolis

5h 34m

1 stop

STL4:42 pmLambert-St Louis

$296

Delta

Mar 18

STL7:03 amLambert-St Louis

4h 36m

1 stop

IND12:39 pmIndianapolis

Mar 27

IND7:59 pmIndianapolis

4h 26m

1 stop

STL11:25 pmLambert-St Louis

$298

Frontier flights from St. Louis to Indianapolis

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

Frontier

Feb 8

STL5:42 pmLambert-St Louis

23h 56m

1 stop

IND6:38 pmIndianapolis

Feb 12

IND7:27 pmIndianapolis

30h 00m

2 stops

STL12:27 amLambert-St Louis

$285

Frontier

Feb 8

STL5:42 pmLambert-St Louis

23h 56m

1 stop

IND6:38 pmIndianapolis

Feb 12

IND7:27 pmIndianapolis

12h 24m

1 stop

STL6:51 amLambert-St Louis

$314

Fly from

Fly to

Route

Depart

Return

Price

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

lun. 2/9

5:42 pm-9:43 am

1 stop15h 01m

Indianapolis

vie. 2/13

7:41 pm-6:51 am

1 stop12h 10m

$217

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

mar. 2/17

7:10 am-2:24 pm

1 stop6h 14m

Indianapolis

jue. 2/19

6:15 am-9:32 am

1 stop4h 17m

$267

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

dom. 2/8

5:42 pm-6:38 pm

1 stop23h 56m

Indianapolis

jue. 2/12

7:27 pm-12:27 am

2 stops30h 00m

$285

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

mié. 2/11

8:17 pm-2:17 pm

2 stops17h 00m

Indianapolis

jue. 2/12

7:27 pm-6:51 am

1 stop12h 24m

$289

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

dom. 2/15

6:35 am-11:28 am

1 stop3h 53m

Indianapolis

mar. 2/17

12:08 pm-4:42 pm

1 stop5h 34m

$296

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

mié. 3/18

7:03 am-12:39 pm

1 stop4h 36m

Indianapolis

vie. 3/27

7:59 pm-11:25 pm

1 stop4h 26m

$298

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

dom. 2/8

5:42 pm-6:38 pm

1 stop23h 56m

Indianapolis

jue. 2/12

7:27 pm-6:51 am

1 stop12h 24m

$314

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

mar. 2/24

9:55 am-4:49 pm

1 stop5h 54m

Indianapolis

mié. 2/25

4:05 pm-9:40 pm

1 stop6h 35m

$315

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

vie. 3/20

6:32 am-11:11 am

1 stop3h 39m

Indianapolis

lun. 3/23

7:00 pm-11:58 pm

1 stop5h 58m

$317

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

vie. 2/20

5:50 pm-12:07 am

1 stop5h 17m

Indianapolis

dom. 2/22

6:22 pm-11:36 pm

1 stop6h 14m

$327

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 32% 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 10m
Direct flights	None

The fastest flight from St. Louis to Indianapolis takes 4h 10m

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 4h 10m, 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 11,189 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.