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

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

What airlines fly to Indianapolis?

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Indianapolis from St. Louis according to our data. American Airlines is the first choice among our users, with 71% of people opting to fly with this airline when traveling to Indianapolis. Keep in mind that there are 3 different airlines that fly to Indianapolis on a routine basis, so you have a few additional options to choose from.

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 December 2025.

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.

$80 Cheap Flights from St. Louis to Indianapolis in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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 - 6:23 pm

STL

IND

23h 41m1 stop

2:12 pm - 11:33 pm

IND

STL

10h 21m1 stop

$154Multiple Airlines

Tue, Jan 20 - Thu, Jan 22

9:41 am - 8:32 am

STL

IND

21h 51m1 stop

9:28 am - 10:27 pm

IND

STL

13h 59m1 stop

$183Multiple Airlines

Sat, Feb 21 - Wed, Feb 25

9:41 am - 8:32 am

STL

IND

21h 51m1 stop

8:18 pm - 11:59 pm

IND

STL

28h 41m2 stops

$205Multiple Airlines

Sat, Feb 21 - Wed, Feb 25

5:42 pm - 6:23 pm

STL

IND

23h 41m1 stop

12:38 pm - 11:33 pm

IND

STL

11h 55m2 stops

$212Multiple Airlines

Tue, Jan 20 - Thu, Jan 22

8:32 pm - 6:23 pm

STL

IND

20h 51m2 stops

2:12 pm - 11:33 pm

IND

STL

10h 21m1 stop

$213Multiple Airlines

Fri, Jan 16 - Fri, Jan 23

5:11 pm - 9:43 am

STL

IND

15h 32m1 stop

2:12 pm - 11:33 pm

IND

STL

10h 21m1 stop

$221Multiple Airlines

Fri, Jan 16 - Fri, Jan 23

6:00 am - 12:31 pm

STL

IND

5h 31m1 stop

12:52 pm - 4:45 pm

IND

STL

4h 53m1 stop

$251Delta

Wed, Jan 7 - Wed, Jan 14

7:10 am - 12:31 pm

STL

IND

4h 21m1 stop

6:13 am - 9:39 am

IND

STL

4h 26m1 stop

$257Delta

Tue, Jan 13 - Thu, Jan 15

3:40 pm - 10:30 pm

STL

IND

5h 50m1 stop

6:33 pm - 11:39 pm

IND

STL

6h 06m1 stop

$261Delta

Tue, Jan 6 - Sat, Jan 10

8:15 am - 7:55 pm

STL

IND

10h 40m2 stops

6:35 pm - 10:40 pm

IND

STL

5h 05m1 stop

$266Southwest

Tue, Jan 13 - Thu, Jan 15

Delta flights from St. Louis to Indianapolis

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

Delta

Jan 7

STL6:00 amLambert-St Louis

5h 31m

1 stop

IND12:31 pmIndianapolis

Jan 14

IND12:52 pmIndianapolis

4h 53m

1 stop

STL4:45 pmLambert-St Louis

$251

Find similar

Delta

Jan 13

STL7:10 amLambert-St Louis

4h 21m

1 stop

IND12:31 pmIndianapolis

Jan 15

IND6:13 amIndianapolis

4h 26m

1 stop

STL9:39 amLambert-St Louis

$257

Find similar

Delta

Jan 6

STL3:40 pmLambert-St Louis

5h 50m

1 stop

IND10:30 pmIndianapolis

Jan 10

IND6:33 pmIndianapolis

6h 06m

1 stop

STL11:39 pmLambert-St Louis

$261

Find similar

Southwest flights from St. Louis to Indianapolis

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

Southwest

Jan 13

STL8:15 amLambert-St Louis

10h 40m

2 stops

IND7:55 pmIndianapolis

Jan 15

IND6:35 pmIndianapolis

5h 05m

1 stop

STL10:40 pmLambert-St Louis

$266

Find similar

Southwest

Jan 13

STL10:15 amLambert-St Louis

6h 45m

2 stops

IND6:00 pmIndianapolis

Jan 15

IND12:40 pmIndianapolis

11h 00m

2 stops

STL10:40 pmLambert-St Louis

$277

Find similar

Southwest

Dec 23

STL9:50 amLambert-St Louis

7h 20m

2 stops

IND6:10 pmIndianapolis

Dec 31

IND6:45 amIndianapolis

11h 40m

2 stops

STL5:25 pmLambert-St Louis

$589

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Tue 1/20

5:42 pm-6:23 pm

1 stop23h 41m

Indianapolis

Thu 1/22

2:12 pm-11:33 pm

1 stop10h 21m

$154

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sat 2/21

9:41 am-8:32 am

1 stop21h 51m

Indianapolis

Wed 2/25

9:28 am-10:27 pm

1 stop13h 59m

$183

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sat 2/21

9:41 am-8:32 am

1 stop21h 51m

Indianapolis

Wed 2/25

8:18 pm-11:59 pm

2 stops28h 41m

$205

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Tue 1/20

5:42 pm-6:23 pm

1 stop23h 41m

Indianapolis

Thu 1/22

12:38 pm-11:33 pm

2 stops11h 55m

$212

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Fri 1/16

8:32 pm-6:23 pm

2 stops20h 51m

Indianapolis

Fri 1/23

2:12 pm-11:33 pm

1 stop10h 21m

$213

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Fri 1/16

5:11 pm-9:43 am

1 stop15h 32m

Indianapolis

Fri 1/23

2:12 pm-11:33 pm

1 stop10h 21m

$221

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Wed 1/7

6:00 am-12:31 pm

1 stop5h 31m

Indianapolis

Wed 1/14

12:52 pm-4:45 pm

1 stop4h 53m

$251

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Tue 1/13

7:10 am-12:31 pm

1 stop4h 21m

Indianapolis

Thu 1/15

6:13 am-9:39 am

1 stop4h 26m

$257

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Tue 1/6

3:40 pm-10:30 pm

1 stop5h 50m

Indianapolis

Sat 1/10

6:33 pm-11:39 pm

1 stop6h 06m

$261

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Tue 1/13

8:15 am-7:55 pm

2 stops10h 40m

Indianapolis

Thu 1/15

6:35 pm-10:40 pm

1 stop5h 05m

$266

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.

What is the cheapest time of day to depart on your flight to Indianapolis?

Flying to Indianapolis from St. Louis at noon is the least expensive time of day to depart. momondo users have found prices as low as $256 when looking at flights departing at noon. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $1,297 on average. Flights to Indianapolis from St. Louis in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

As of December 2025, prices for St. Louis to Indianapolis flights are approximately 49% 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 28m
Direct flights	None

The fastest flight from St. Louis to Indianapolis takes 3h 28m

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 28m, 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 December 2025.
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 11,055 reviews		Search American Airlines flights

Terre Haute

Bloomington

Kokomo

Muncie

Anderson

Plainfield

Greenwood

Noblesville

Fishers

Carmel

Shelbyville

West Lafayette

Seymour

Franklin

Brownsburg

Speedway

Crawfordsville

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.