What airlines fly to Indianapolis?

American Airlines, Delta and Frontier 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 66% of people opting to fly with this airline when traveling to Indianapolis. Keep in mind that there are 4 different airlines that fly to Indianapolis on a routine basis, so you have a few additional options to choose from.

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

Spirit Airlines, Southwest, and Delta are the most popular carriers 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 2 as of February 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.

$91 Cheap Flights from St. Louis to Indianapolis in 2025

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Find the cheapest flights from St. Louis to Indianapolis

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One-way

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Cheap round-trip flights

These are some of the best round-trip flight deals from St. Louis to Indianapolis that have been recently found on momondo from popular airlines, departing in the coming months.

6:32 pm - 12:10 amSTL-IND

4h 38m1 stop

8:00 am - 1:00 pmIND-STL

6h 00m1 stop

$252American Airlines

Find Deal

Fri, Mar 7 - Tue, Mar 11

5:40 am - 1:00 pmSTL-IND

6h 20m1 stop

5:10 am - 10:05 amIND-STL

5h 55m1 stop

$267Southwest

Find Deal

Fri, Mar 7 - Sat, Mar 15

4:55 pm - 12:30 amSTL-IND

6h 35m2 stops

5:10 am - 10:05 amIND-STL

5h 55m1 stop

$272Southwest

Find Deal

Fri, Mar 7 - Sat, Mar 15

9:39 am - 4:52 pmSTL-IND

6h 13m1 stop

12:50 pm - 3:47 pmIND-STL

3h 57m1 stop

$290United Airlines

Find Deal

Fri, Apr 11 - Sun, Apr 13

5:06 am - 11:00 amSTL-IND

4h 54m1 stop

7:48 pm - 11:56 pmIND-STL

5h 08m1 stop

$292American Airlines

Find Deal

Sat, Mar 8 - Sat, Mar 15

5:45 am - 11:52 amSTL-IND

5h 07m1 stop

5:45 am - 9:37 amIND-STL

4h 52m1 stop

$307American Airlines

Find Deal

Fri, Apr 11 - Sun, Apr 13

7:30 am - 3:45 pmSTL-IND

7h 15m2 stops

7:40 am - 12:50 pmIND-STL

6h 10m1 stop

$312Southwest

Find Deal

Sun, Apr 27 - Wed, Apr 30

6:47 pm - 8:58 amSTL-IND

13h 11m1 stop

10:03 am - 5:16 pmIND-STL

8h 13m1 stop

$314Spirit Airlines

Find Deal

Sun, Apr 6 - Sun, Apr 13

6:47 pm - 7:33 pmSTL-IND

23h 46m3 stops

10:03 am - 5:16 pmIND-STL

8h 13m1 stop

$332Spirit Airlines

Find Deal

Sun, Apr 6 - Sun, Apr 13

5:33 pm - 11:17 pmSTL-IND

4h 44m1 stop

5:45 am - 10:08 amIND-STL

5h 23m1 stop

$379United Airlines

Find Deal

Fri, Mar 7 - Tue, Mar 11

American Airlines flights from St. Louis to Indianapolis

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

American Airlines

Mar 7

STL6:32 pmLambert-St Louis

4h 38m

1 stop

IND12:10 amIndianapolis

Mar 11

IND8:00 amIndianapolis

6h 00m

1 stop

STL1:00 pmLambert-St Louis

$252

Find similar

American Airlines

Mar 8

STL5:06 amLambert-St Louis

4h 54m

1 stop

IND11:00 amIndianapolis

Mar 15

IND7:48 pmIndianapolis

5h 08m

1 stop

STL11:56 pmLambert-St Louis

$292

Find similar

American Airlines

Apr 11

STL5:45 amLambert-St Louis

5h 07m

1 stop

IND11:52 amIndianapolis

Apr 13

IND5:45 amIndianapolis

4h 52m

1 stop

STL9:37 amLambert-St Louis

$307

Find similar

Southwest flights from St. Louis to Indianapolis

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

Southwest

Mar 7

STL5:40 amLambert-St Louis

6h 20m

1 stop

IND1:00 pmIndianapolis

Mar 15

IND5:10 amIndianapolis

5h 55m

1 stop

STL10:05 amLambert-St Louis

$267

Find similar

Southwest

Mar 7

STL4:55 pmLambert-St Louis

6h 35m

2 stops

IND12:30 amIndianapolis

Mar 15

IND5:10 amIndianapolis

5h 55m

1 stop

STL10:05 amLambert-St Louis

$272

Find similar

Southwest

Apr 27

STL7:30 amLambert-St Louis

7h 15m

2 stops

IND3:45 pmIndianapolis

Apr 30

IND7:40 amIndianapolis

6h 10m

1 stop

STL12:50 pmLambert-St Louis

$312

Find similar

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 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 February 2025, prices for St. Louis to Indianapolis flights are approximately 121% more expensive 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

Best Price Found	$91
Fastest flight time	4h 38m
Direct flights	None
Airports in Indianapolis	1 airport

The best one-way flight to Indianapolis from St. Louis in the past 72 hours is $91. The best round-trip flight deal from St. Louis to Indianapolis found on momondo in the last 72 hours is $252.

The fastest flight from St. Louis to Indianapolis takes 4h 38m

There are no direct flights from St. Louis to Indianapolis. Popular non-direct route for this connection is Lambert-St Louis Airport - Indianapolis Airport.

There is 1 airport near Indianapolis: Indianapolis (IND)

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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 38m, 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 2 as of February 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 65% of the total bookings. Other popular airlines include Delta with 35%.

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
Delta	PriceFrom $216	Free Cancellation	Rating 8.0 8,219 reviews		Search Delta flights
American Airlines	PriceFrom $236	Free Cancellation	Rating 7.2 10,000 reviews		Search American Airlines flights

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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.