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Cheap flights from St. Louis to Indianapolis from $101

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Indianapolis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
7:59 pm - 3:08 pmSTL  Lambert-St Louis-IND Indianapolis
18h 09m1 stop Denver Intl
Frontier Logo
3:58 pm - 7:14 pmIND  Indianapolis-STL Lambert-St Louis
28h 16m1 stop Denver Intl
$206Frontier
Mon, Nov 9 - Fri, Nov 13
Frontier Logo
9:09 am - 9:35 pmSTL  Lambert-St Louis-IND Indianapolis
11h 26m1 stop Dallas/Fort Worth
Frontier Logo
4:41 pm - 11:06 amIND  Indianapolis-STL Lambert-St Louis
19h 25m1 stop Denver Intl
$210Frontier
Tue, Nov 24 - Tue, Dec 1
Frontier Logo
4:18 pm - 3:08 pmSTL  Lambert-St Louis-IND Indianapolis
21h 50m1 stop Denver Intl
Frontier Logo
10:30 pm - 7:54 amIND  Indianapolis-STL Lambert-St Louis
10h 24m1 stop Dallas/Fort Worth
$230Frontier
Wed, Nov 18 - Sat, Nov 21
Frontier Logo
4:18 pm - 3:08 pmSTL  Lambert-St Louis-IND Indianapolis
21h 50m1 stop Denver Intl
Frontier Logo
6:15 pm - 11:59 pmIND  Indianapolis-STL Lambert-St Louis
6h 44m1 stop Orlando
$230Frontier
Wed, Nov 18 - Sat, Nov 21
Southwest Logo
6:30 am - 12:30 pmSTL  Lambert-St Louis-IND Indianapolis
5h 00m1 stop Baltimore/Washington
Southwest Logo
6:35 am - 12:20 pmIND  Indianapolis-STL Lambert-St Louis
6h 45m1 stop Tampa
$248Southwest
Sun, Jan 24 - Wed, Jan 27
Southwest Logo
8:05 am - 6:00 pmSTL  Lambert-St Louis-IND Indianapolis
8h 55m2 stops Nashville Intl Atlanta Hartsfield-Jackson
Southwest Logo
7:30 am - 12:35 pmIND  Indianapolis-STL Lambert-St Louis
6h 05m1 stop Dallas Love Field
$253Southwest
Sun, Jan 24 - Wed, Jan 27
Southwest Logo
8:05 am - 6:00 pmSTL  Lambert-St Louis-IND Indianapolis
8h 55m2 stops Nashville Intl Atlanta Hartsfield-Jackson
Southwest Logo
8:50 am - 1:50 pmIND  Indianapolis-STL Lambert-St Louis
6h 00m2 stops Chicago Midway Nashville Intl
$258Southwest
Sun, Jan 24 - Wed, Jan 27
United Airlines Logo
5:34 pm - 11:47 pmSTL  Lambert-St Louis-IND Indianapolis
5h 13m1 stop Chicago O'Hare Intl
United Airlines Logo
12:46 pm - 3:43 pmIND  Indianapolis-STL Lambert-St Louis
3h 57m1 stop Chicago O'Hare Intl
$327United Airlines
Sat, Nov 21 - Sat, Nov 28
United Airlines Logo
5:00 am - 9:48 amSTL  Lambert-St Louis-IND Indianapolis
3h 48m1 stop Chicago O'Hare Intl
United Airlines Logo
12:46 pm - 3:43 pmIND  Indianapolis-STL Lambert-St Louis
3h 57m1 stop Chicago O'Hare Intl
$381United Airlines
Sun, Nov 29 - Mon, Nov 30
United Airlines Logo
11:15 am - 6:46 pmSTL  Lambert-St Louis-IND Indianapolis
6h 31m1 stop Chicago O'Hare Intl
United Airlines Logo
5:45 am - 10:12 amIND  Indianapolis-STL Lambert-St Louis
5h 27m1 stop Washington, D.C. Dulles Intl
$453United Airlines
Sat, Nov 7 - Wed, Nov 11

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Frontier flights from St. Louis to Indianapolis

Our best Frontier deals on St. Louis to Indianapolis flight tickets
Frontier
Nov 9
STL7:59 pmLambert-St Louis
18h 09m
1 stop
IND3:08 pmIndianapolis
Nov 13
IND3:58 pmIndianapolis
28h 16m
1 stop
STL7:14 pmLambert-St Louis
$206
Frontier
Nov 24
STL9:09 amLambert-St Louis
11h 26m
1 stop
IND9:35 pmIndianapolis
Dec 1
IND4:41 pmIndianapolis
19h 25m
1 stop
STL11:06 amLambert-St Louis
$210
Frontier
Nov 18
STL4:18 pmLambert-St Louis
21h 50m
1 stop
IND3:08 pmIndianapolis
Nov 21
IND10:30 pmIndianapolis
10h 24m
1 stop
STL7:54 amLambert-St Louis
$230

Southwest flights from St. Louis to Indianapolis

Our best Southwest deals on St. Louis to Indianapolis flight tickets
Southwest
Jan 24
STL6:30 amLambert-St Louis
5h 00m
1 stop
IND12:30 pmIndianapolis
Jan 27
IND6:35 amIndianapolis
6h 45m
1 stop
STL12:20 pmLambert-St Louis
$248
Southwest
Jan 24
STL8:05 amLambert-St Louis
8h 55m
2 stops
IND6:00 pmIndianapolis
Jan 27
IND7:30 amIndianapolis
6h 05m
1 stop
STL12:35 pmLambert-St Louis
$253
Southwest
Jan 24
STL8:05 amLambert-St Louis
8h 55m
2 stops
IND6:00 pmIndianapolis
Jan 27
IND8:50 amIndianapolis
6h 00m
2 stops
STL1:50 pmLambert-St Louis
$258

momondo Fare Finder

 
Use the filters below to find and compare flights from St. Louis to Indianapolis that are best for you.

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Route

Depart

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Price

Cheapest round-trip

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Mon 11/9

7:59 pm-3:08 pm

1 stop18h 09m

Indianapolis

Fri 11/13

3:58 pm-7:14 pm

1 stop28h 16m

$206

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Tue 11/24

9:09 am-9:35 pm

1 stop11h 26m

Indianapolis

Tue 12/1

4:41 pm-11:06 am

1 stop19h 25m

$210

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Wed 11/18

4:18 pm-3:08 pm

1 stop21h 50m

Indianapolis

Sat 11/21

10:30 pm-7:54 am

1 stop10h 24m

$230

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Wed 11/18

4:18 pm-3:08 pm

1 stop21h 50m

Indianapolis

Sat 11/21

6:15 pm-11:59 pm

1 stop6h 44m

$230

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Sun 1/24

6:30 am-12:30 pm

1 stop5h 00m

Indianapolis

Wed 1/27

6:35 am-12:20 pm

1 stop6h 45m

$248

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Sun 1/24

8:05 am-6:00 pm

2 stops8h 55m

Indianapolis

Wed 1/27

7:30 am-12:35 pm

1 stop6h 05m

$253

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Sun 1/24

8:05 am-6:00 pm

2 stops8h 55m

Indianapolis

Wed 1/27

8:50 am-1:50 pm

2 stops6h 00m

$258

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Sat 11/21

5:34 pm-11:47 pm

1 stop5h 13m

Indianapolis

Sat 11/28

12:46 pm-3:43 pm

1 stop3h 57m

$327
Quickest round-trip

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Sun 11/29

5:00 am-9:48 am

1 stop3h 48m

Indianapolis

Mon 11/30

12:46 pm-3:43 pm

1 stop3h 57m

$381

St. LouisIndianapolis

STL Lambert-St Louis - IND Indianapolis

STLIND

Lambert-St Louis

Sat 11/7

11:15 am-6:46 pm

1 stop6h 31m

Indianapolis

Wed 11/11

5:45 am-10:12 am

1 stop5h 27m

$453

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Indianapolis from

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

What is the cheapest month to fly to Indianapolis?

In general, May 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 $0. If you are unable to visit Indianapolis during the month of May, then departing from St. Louis during the month July is also very affordable. Most momondo users find prices during this month for around $346.

What is the cheapest Lambert-St Louis to Indianapolis flight route?

Fly from Lambert-St Louis to Indianapolis for the best Lambert-St Louis - Indianapolis flight prices

What cabin class options are available on St. Louis to Indianapolis flights?

There is only 1 cabin class available to choose from on St. Louis to Indianapolis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

As of October 2026, prices for St. Louis to Indianapolis flights are approximately 203% 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

$101

Fastest flight time

3h 43m

Direct flights

None
The best one-way flight to Indianapolis from St. Louis in the past 72 hours is $101. The best round-trip flight deal from St. Louis to Indianapolis found on momondo in the last 72 hours is $206.
The fastest flight from St. Louis to Indianapolis takes 3h 43m
There are no direct flights from St. Louis to Indianapolis. There are no popular flight routes from St. Louis to Indianapolis.
Search flight deals

Frequently asked questions about flying from St. Louis to Indianapolis

  • 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 43m, 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?

  • 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 plane model from St. Louis to Indianapolis?

  • What is the most popular airline from St. Louis to Indianapolis?

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
SouthwestPriceFrom $243Free CancellationRating
7.9
4,220 reviews
Search Southwest flights
United AirlinesPriceFrom $268Free CancellationRating
7.3
10,444 reviews
Search United Airlines flights

Traveling to a place near Indianapolis?

Book flights to Indianapolis if you plan to visit one of these locations
Terre Haute
Bloomington
Kokomo
Muncie
Anderson
Greenwood
Plainfield
Noblesville
Carmel
Fishers
West Lafayette
Speedway
Franklin
Westfield
Shelbyville
Crawfordsville
Brownsburg
Seymour
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.

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