Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Indianapolis from $70

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Indianapolis departing on 4/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

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

Trusted and free

Trusted and free

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

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from St. Louis to Indianapolis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
9:55 pm - 12:57 pm
STL
-
IND
14h 02m
1 stop
Frontier Logo
1:20 pm - 11:19 pm
IND
-
STL
10h 59m
1 stop
$205Frontier
Sun, Apr 19 - Sun, Apr 26
Frontier Logo
11:25 am - 10:32 am
STL
-
IND
22h 07m
1 stop
Frontier Logo
12:12 pm - 6:50 am
IND
-
STL
19h 38m
1 stop
$213Frontier
Thu, Apr 23 - Sun, Apr 26
Southwest Logo
5:45 am - 2:15 pm
STL
-
IND
7h 30m
1 stop
Southwest Logo
8:15 am - 2:30 pm
IND
-
STL
7h 15m
1 stop
$221Southwest
Wed, Apr 22 - Wed, Apr 29
Southwest Logo
5:35 am - 12:05 pm
STL
-
IND
5h 30m
1 stop
Southwest Logo
5:15 pm - 10:10 pm
IND
-
STL
5h 55m
2 stops
$226Southwest
Wed, Apr 22 - Wed, Apr 29
Southwest Logo
2:30 pm - 10:50 pm
STL
-
IND
7h 20m
2 stops
Southwest Logo
5:15 pm - 10:10 pm
IND
-
STL
5h 55m
2 stops
$231Southwest
Wed, Apr 22 - Wed, Apr 29
Frontier Logo
11:25 am - 10:32 am
STL
-
IND
22h 07m
1 stop
Frontier Logo
7:14 pm - 11:19 pm
IND
-
STL
29h 05m
1 stop
$233Frontier
Thu, Apr 23 - Mon, Apr 27
Frontier Logo
4:59 pm - 11:11 am
STL
-
IND
17h 12m
1 stop
Frontier Logo
12:17 pm - 6:50 am
IND
-
STL
19h 33m
1 stop
$241Frontier
Tue, Apr 28 - Thu, Apr 30
Frontier Logo
11:25 am - 10:32 am
STL
-
IND
22h 07m
1 stop
Frontier Logo
1:20 pm - 6:50 am
IND
-
STL
18h 30m
2 stops
$245Frontier
Thu, Apr 23 - Sun, Apr 26
Southwest Logo
2:30 pm - 10:50 pm
STL
-
IND
7h 20m
2 stops
Southwest Logo
6:35 pm - 12:15 am
IND
-
STL
6h 40m
1 stop
$248Southwest
Tue, Apr 28 - Thu, Apr 30
Frontier Logo
4:59 pm - 9:49 am
STL
-
IND
15h 50m
1 stop
Frontier Logo
12:34 pm - 11:19 pm
IND
-
STL
35h 45m
2 stops
$254Frontier
Fri, Apr 24 - Mon, Apr 27

Frontier flights from St. Louis to Indianapolis

Our best Frontier deals on St. Louis to Indianapolis flight tickets
Frontier
Apr 19
STL9:55 pmLambert-St Louis
14h 02m
1 stop
IND12:57 pmIndianapolis
Apr 26
IND1:20 pmIndianapolis
10h 59m
1 stop
STL11:19 pmLambert-St Louis
$205
Frontier
Apr 23
STL11:25 amLambert-St Louis
22h 07m
1 stop
IND10:32 amIndianapolis
Apr 26
IND12:12 pmIndianapolis
19h 38m
1 stop
STL6:50 amLambert-St Louis
$213
Frontier
Apr 23
STL11:25 amLambert-St Louis
22h 07m
1 stop
IND10:32 amIndianapolis
Apr 27
IND7:14 pmIndianapolis
29h 05m
1 stop
STL11:19 pmLambert-St Louis
$233

United Airlines flights from St. Louis to Indianapolis

Our best United Airlines deals on St. Louis to Indianapolis flight tickets
United Airlines
Apr 18
STL9:16 amLambert-St Louis
4h 52m
1 stop
IND3:08 pmIndianapolis
Apr 20
IND6:00 amIndianapolis
3h 25m
1 stop
STL8:25 amLambert-St Louis
$265
United Airlines
Apr 5
STL11:15 amLambert-St Louis
4h 42m
1 stop
IND4:57 pmIndianapolis
May 2
IND12:47 pmIndianapolis
4h 52m
1 stop
STL4:39 pmLambert-St Louis
$285
United Airlines
Jun 1
STL8:15 pmLambert-St Louis
3h 50m
1 stop
IND1:05 amIndianapolis
Jun 5
IND9:20 amIndianapolis
3h 51m
1 stop
STL12:11 pmLambert-St Louis
$286

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Indianapolis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated March 27, 2026.
Use the filters below to find and compare flights from St. Louis to Indianapolis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Sun 4/19

9:55 pm-12:57 pm

1 stop14h 02m

Indianapolis

Sun 4/26

1:20 pm-11:19 pm

1 stop10h 59m

$205

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 4/23

11:25 am-10:32 am

1 stop22h 07m

Indianapolis

Sun 4/26

12:12 pm-6:50 am

1 stop19h 38m

$213

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Wed 4/22

5:45 am-2:15 pm

1 stop7h 30m

Indianapolis

Wed 4/29

8:15 am-2:30 pm

1 stop7h 15m

$221
Quickest round-trip

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Wed 4/22

5:35 am-12:05 pm

1 stop5h 30m

Indianapolis

Wed 4/29

5:15 pm-10:10 pm

2 stops5h 55m

$226

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Wed 4/22

2:30 pm-10:50 pm

2 stops7h 20m

Indianapolis

Wed 4/29

5:15 pm-10:10 pm

2 stops5h 55m

$231

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 4/23

11:25 am-10:32 am

1 stop22h 07m

Indianapolis

Mon 4/27

7:14 pm-11:19 pm

1 stop29h 05m

$233

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Tue 4/28

4:59 pm-11:11 am

1 stop17h 12m

Indianapolis

Thu 4/30

12:17 pm-6:50 am

1 stop19h 33m

$241

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Thu 4/23

11:25 am-10:32 am

1 stop22h 07m

Indianapolis

Sun 4/26

1:20 pm-6:50 am

2 stops18h 30m

$245

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Tue 4/28

2:30 pm-10:50 pm

2 stops7h 20m

Indianapolis

Thu 4/30

6:35 pm-12:15 am

1 stop6h 40m

$248

St. LouisIndianapolis

STL - IND

STLIND

Lambert-St Louis

Fri 4/24

4:59 pm-9:49 am

1 stop15h 50m

Indianapolis

Mon 4/27

12:34 pm-11:19 pm

2 stops35h 45m

$254

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 typical price of a round-trip flight between St. Louis and Indianapolis?

What is the cheapest month to fly to Indianapolis?

In general, August 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 $234. If you are unable to visit Indianapolis during the month of August, then departing from St. Louis during the month September is also very affordable. Most momondo users find prices during this month for around $235.

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 March 2026, prices for St. Louis to Indianapolis flights are approximately 72% 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

Fastest flight time

0h 55m

Direct flights

Sat

Airports in Indianapolis

1 airport
The fastest flight from St. Louis to Indianapolis takes 0h 55m
Direct flights go from St. Louis to Indianapolis on Saturday. There are no airlines offering direct flights.
There is 1 airport in Indianapolis. From St. Louis there are direct flights to Indianapolis (IND).
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 0h 55m, 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 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
American AirlinesPriceFrom $185Free CancellationRating
7.1
11,507 reviews
Search American 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
Plainfield
Anderson
Greenwood
Noblesville
Carmel
Fishers
Shelbyville
Franklin
Speedway
West Lafayette
Seymour
Brownsburg
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.

An easier way to manage your Indianapolis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 4/26
Sun 5/3
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States