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Cheap flights from Indianapolis to St. Louis from $68

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Indianapolis to St. Louis departing on 3/8. 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

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Find the cheapest flights from Indianapolis to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
7:27 pm - 6:51 am
IND
-
STL
12h 24m
1 stop
Frontier Logo
11:32 am - 11:16 am
STL
-
IND
22h 44m
1 stop
$164Frontier
Sun, Mar 1 - Wed, Mar 18
Multiple Airlines Logo
6:00 am - 11:19 pm
IND
-
STL
18h 19m
2 stops
Multiple Airlines Logo
11:32 am - 11:16 am
STL
-
IND
22h 44m
1 stop
$194Multiple Airlines
Wed, Mar 11 - Wed, Mar 18
Multiple Airlines Logo
9:28 am - 11:19 pm
IND
-
STL
14h 51m
1 stop
Multiple Airlines Logo
11:32 am - 11:16 am
STL
-
IND
22h 44m
1 stop
$195Multiple Airlines
Wed, Mar 11 - Wed, Mar 18
Multiple Airlines Logo
7:27 pm - 6:51 am
IND
-
STL
12h 24m
1 stop
Multiple Airlines Logo
8:22 pm - 2:17 pm
STL
-
IND
16h 55m
2 stops
$197Multiple Airlines
Thu, Feb 26 - Mon, Mar 2
Frontier Logo
7:27 pm - 6:51 am
IND
-
STL
12h 24m
1 stop
Frontier Logo
11:32 am - 8:12 am
STL
-
IND
19h 40m
2 stops
$205Frontier
Sun, Mar 1 - Wed, Mar 18
Frontier Logo
9:32 pm - 6:51 am
IND
-
STL
34h 19m
2 stops
Frontier Logo
11:32 am - 11:16 am
STL
-
IND
22h 44m
1 stop
$215Frontier
Sat, Feb 28 - Wed, Mar 18
Multiple Airlines Logo
2:43 pm - 6:50 am
IND
-
STL
17h 07m
2 stops
Multiple Airlines Logo
8:13 pm - 11:17 am
STL
-
IND
14h 04m
1 stop
$231Multiple Airlines
Sun, Apr 26 - Wed, Apr 29
Multiple Airlines Logo
7:27 pm - 6:51 am
IND
-
STL
12h 24m
1 stop
Multiple Airlines Logo
3:49 pm - 8:32 am
STL
-
IND
15h 43m
1 stop
$264Multiple Airlines
Thu, Feb 26 - Mon, Mar 2
Southwest Logo
5:40 am - 1:50 pm
IND
-
STL
9h 10m
2 stops
Southwest Logo
6:10 am - 2:45 pm
STL
-
IND
7h 35m
2 stops
$265Southwest
Wed, Mar 11 - Wed, Mar 18
United Airlines Logo
7:45 pm - 10:56 pm
IND
-
STL
4h 11m
1 stop
United Airlines Logo
9:10 am - 3:08 pm
STL
-
IND
4h 58m
1 stop
$267United Airlines
Fri, Apr 17 - Sat, Apr 18

Southwest flights from Indianapolis to St. Louis

Our best Southwest deals on Indianapolis to St. Louis flight tickets
Southwest
Mar 11
IND5:40 amIndianapolis
9h 10m
2 stops
STL1:50 pmLambert-St Louis
Mar 18
STL6:10 amLambert-St Louis
7h 35m
2 stops
IND2:45 pmIndianapolis
$265
Southwest
Mar 28
IND5:30 pmIndianapolis
6h 25m
1 stop
STL10:55 pmLambert-St Louis
Mar 30
STL4:55 pmLambert-St Louis
4h 40m
1 stop
IND10:35 pmIndianapolis
$284
Southwest
Mar 28
IND5:30 pmIndianapolis
6h 25m
1 stop
STL10:55 pmLambert-St Louis
Mar 30
STL7:35 amLambert-St Louis
7h 25m
2 stops
IND4:00 pmIndianapolis
$309

Delta flights from Indianapolis to St. Louis

Our best Delta deals on Indianapolis to St. Louis flight tickets
Delta
Jun 18
IND8:25 amIndianapolis
5h 29m
1 stop
STL12:54 pmLambert-St Louis
Jun 21
STL6:45 amLambert-St Louis
5h 43m
1 stop
IND1:28 pmIndianapolis
$317
Delta
Jun 18
IND8:00 amIndianapolis
6h 17m
1 stop
STL1:17 pmLambert-St Louis
Jun 21
STL6:45 amLambert-St Louis
5h 43m
1 stop
IND1:28 pmIndianapolis
$327
Delta
Feb 26
IND12:08 pmIndianapolis
5h 34m
1 stop
STL4:42 pmLambert-St Louis
Feb 27
STL5:50 pmLambert-St Louis
5h 17m
1 stop
IND12:07 amIndianapolis
$417

momondo Fare Finder

 
Customize your flight search to find flights from Indianapolis to St. Louis 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 February 13, 2026.
Use the filters below to find and compare flights from Indianapolis to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Sun 3/1

7:27 pm-6:51 am

1 stop12h 24m

Lambert-St Louis

Wed 3/18

11:32 am-11:16 am

1 stop22h 44m

$164

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Wed 3/11

6:00 am-11:19 pm

2 stops18h 19m

Lambert-St Louis

Wed 3/18

11:32 am-11:16 am

1 stop22h 44m

$194

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Wed 3/11

9:28 am-11:19 pm

1 stop14h 51m

Lambert-St Louis

Wed 3/18

11:32 am-11:16 am

1 stop22h 44m

$195

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Thu 2/26

7:27 pm-6:51 am

1 stop12h 24m

Lambert-St Louis

Mon 3/2

8:22 pm-2:17 pm

2 stops16h 55m

$197

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Sun 3/1

7:27 pm-6:51 am

1 stop12h 24m

Lambert-St Louis

Wed 3/18

11:32 am-8:12 am

2 stops19h 40m

$205

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Sat 2/28

9:32 pm-6:51 am

2 stops34h 19m

Lambert-St Louis

Wed 3/18

11:32 am-11:16 am

1 stop22h 44m

$215

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Sun 4/26

2:43 pm-6:50 am

2 stops17h 07m

Lambert-St Louis

Wed 4/29

8:13 pm-11:17 am

1 stop14h 04m

$231

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Thu 2/26

7:27 pm-6:51 am

1 stop12h 24m

Lambert-St Louis

Mon 3/2

3:49 pm-8:32 am

1 stop15h 43m

$264

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Wed 3/11

5:40 am-1:50 pm

2 stops9h 10m

Lambert-St Louis

Wed 3/18

6:10 am-2:45 pm

2 stops7h 35m

$265

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Fri 4/17

7:45 pm-10:56 pm

1 stop4h 11m

Lambert-St Louis

Sat 4/18

9:10 am-3:08 pm

1 stop4h 58m

$267

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 St. Louis from

How to get the cheapest flight ticket from Indianapolis to St. Louis

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 St. Louis?

In general, November is the cheapest month to fly from Indianapolis to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $256. The month of January is another great option to travel to St. Louis, with average flight prices from Indianapolis averaging around $265.

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

As of February 2026, prices for Indianapolis to St. Louis flights are approximately 2% more expensive when compared to flights at the same time last year.

When to book flights from Indianapolis to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Indianapolis to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Indianapolis to St. Louis (IND to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Indianapolis to St. Louis

Fastest flight time

4h 11m

Direct flights

Thu

Airports in St. Louis

1 airport
The fastest flight from Indianapolis to St. Louis takes 4h 11m
Direct flights go from Indianapolis to St. Louis on Thursday. There are no airlines offering direct flights.
There is 1 airport in St. Louis. From Indianapolis there are direct flights to Lambert-St Louis (STL).
Search flight deals

  • How far is Indianapolis to Lambert-St Louis by plane?

    The distance between Indianapolis and Lambert-St Louis is about 230.0 mi. Typically, this will take 4h 11m by plane in normal conditions.

  • When did momondo last update prices for flights from Indianapolis Airport to Lambert-St Louis Airport?

    Prices for flights from Indianapolis Airport to Lambert-St Louis Airport were last updated today.

  • How many operators does momondo search for flights from Indianapolis Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Indianapolis Airport to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Indianapolis Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

Best airlines flying from Indianapolis to St. Louis

Compare and see reviews for airlines that fly from Indianapolis to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $196Free CancellationRating
7.2
11,288 reviews
Search American Airlines flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
Florissant
O'Fallon
Collinsville
St. Peters
Fenton
Wentzville
Alton
Farmington
Clayton
Edwardsville
Eureka
Festus
Litchfield
Glencoe
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Indianapolis to St. Louis?

It is quick and easy to find Indianapolis to St. Louis flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to St. Louis that suits you.

Can I find flights from Indianapolis to St. Louis with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to St. Louis from Indianapolis with this policy.

How can momondo help me find flights from Indianapolis to St. Louis?

momondo helps you find the best flight between Indianapolis and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Indianapolis to St. Louis right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Indianapolis to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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