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Cheap flights from Indianapolis to St. Louis from $65

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 6/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Multiple Airlines Logo
8:00 am - 8:55 am
IND
-
STL
25h 55m
2 stops
Multiple Airlines Logo
6:33 pm - 11:23 am
STL
-
IND
15h 50m
1 stop
$182Multiple Airlines
Thu, Jun 4 - Sun, Jun 7
Multiple Airlines Logo
12:14 pm - 8:55 am
IND
-
STL
21h 41m
1 stop
Multiple Airlines Logo
5:27 pm - 11:21 am
STL
-
IND
40h 54m
2 stops
$190Multiple Airlines
Fri, May 29 - Fri, Jun 5
Multiple Airlines Logo
12:26 pm - 8:55 am
IND
-
STL
21h 29m
2 stops
Multiple Airlines Logo
6:31 pm - 11:19 am
STL
-
IND
15h 48m
1 stop
$203Multiple Airlines
Fri, Jun 5 - Tue, Jun 9
Frontier Logo
12:14 pm - 8:55 am
IND
-
STL
21h 41m
1 stop
Frontier Logo
6:31 pm - 11:19 am
STL
-
IND
15h 48m
1 stop
$215Frontier
Fri, Jun 5 - Tue, Jun 9
Multiple Airlines Logo
12:14 pm - 8:55 am
IND
-
STL
21h 41m
1 stop
Multiple Airlines Logo
11:24 am - 10:45 pm
STL
-
IND
10h 21m
1 stop
$225Multiple Airlines
Fri, May 29 - Fri, Jun 5
Multiple Airlines Logo
2:28 pm - 11:57 pm
IND
-
STL
10h 29m
1 stop
Multiple Airlines Logo
6:33 pm - 11:23 am
STL
-
IND
15h 50m
1 stop
$232Multiple Airlines
Thu, May 28 - Tue, Jun 2
Multiple Airlines Logo
2:28 pm - 11:57 pm
IND
-
STL
10h 29m
1 stop
Multiple Airlines Logo
6:33 pm - 11:23 am
STL
-
IND
15h 50m
1 stop
$233Multiple Airlines
Thu, May 28 - Thu, Jun 4
Multiple Airlines Logo
6:10 am - 5:33 pm
IND
-
STL
12h 23m
2 stops
Multiple Airlines Logo
6:33 pm - 11:23 am
STL
-
IND
15h 50m
1 stop
$255Multiple Airlines
Thu, May 28 - Tue, Jun 2
Multiple Airlines Logo
7:34 pm - 11:57 pm
IND
-
STL
29h 23m
1 stop
Multiple Airlines Logo
11:24 am - 10:45 pm
STL
-
IND
10h 21m
1 stop
$261Multiple Airlines
Mon, Jun 1 - Fri, Jun 5
Multiple Airlines Logo
12:26 pm - 8:47 am
IND
-
STL
21h 21m
2 stops
Multiple Airlines Logo
6:31 pm - 11:19 am
STL
-
IND
15h 48m
1 stop
$264Multiple Airlines
Tue, Jun 9 - Thu, Jun 11

Southwest flights from Indianapolis to St. Louis

Our best Southwest deals on Indianapolis to St. Louis flight tickets
Southwest
Jun 9
IND12:45 pmIndianapolis
6h 40m
2 stops
STL6:25 pmLambert-St Louis
Jun 10
STL5:55 pmLambert-St Louis
4h 30m
1 stop
IND11:25 pmIndianapolis
$292
Southwest
Jun 9
IND12:45 pmIndianapolis
6h 40m
2 stops
STL6:25 pmLambert-St Louis
Jun 11
STL4:35 pmLambert-St Louis
6h 40m
2 stops
IND12:15 amIndianapolis
$316
Southwest
Jun 4
IND5:20 amIndianapolis
5h 05m
1 stop
STL9:25 amLambert-St Louis
Jun 12
STL4:35 pmLambert-St Louis
6h 40m
2 stops
IND12:15 amIndianapolis
$333

Delta flights from Indianapolis to St. Louis

Our best Delta deals on Indianapolis to St. Louis flight tickets
Delta
Jun 18
IND8:05 amIndianapolis
5h 29m
1 stop
STL12:34 pmLambert-St Louis
Jun 21
STL7:08 amLambert-St Louis
4h 32m
1 stop
IND12:40 pmIndianapolis
$337
Delta
May 13
IND7:54 pmIndianapolis
4h 27m
1 stop
STL11:21 pmLambert-St Louis
May 17
STL7:05 amLambert-St Louis
4h 51m
1 stop
IND12:56 pmIndianapolis
$437
Delta
May 4
IND11:33 amIndianapolis
4h 59m
1 stop
STL3:32 pmLambert-St Louis
May 6
STL12:23 pmLambert-St Louis
5h 56m
1 stop
IND7:19 pmIndianapolis
$696

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 May 3, 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

Cheapest round-trip

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Thu 6/4

8:00 am-8:55 am

2 stops25h 55m

Lambert-St Louis

Sun 6/7

6:33 pm-11:23 am

1 stop15h 50m

$182

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Fri 5/29

12:14 pm-8:55 am

1 stop21h 41m

Lambert-St Louis

Fri 6/5

5:27 pm-11:21 am

2 stops40h 54m

$190

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Fri 6/5

12:26 pm-8:55 am

2 stops21h 29m

Lambert-St Louis

Tue 6/9

6:31 pm-11:19 am

1 stop15h 48m

$203

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Fri 6/5

12:14 pm-8:55 am

1 stop21h 41m

Lambert-St Louis

Tue 6/9

6:31 pm-11:19 am

1 stop15h 48m

$215

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Fri 5/29

12:14 pm-8:55 am

1 stop21h 41m

Lambert-St Louis

Fri 6/5

11:24 am-10:45 pm

1 stop10h 21m

$225
Quickest round-trip

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Thu 5/28

2:28 pm-11:57 pm

1 stop10h 29m

Lambert-St Louis

Tue 6/2

6:33 pm-11:23 am

1 stop15h 50m

$232

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Thu 5/28

2:28 pm-11:57 pm

1 stop10h 29m

Lambert-St Louis

Thu 6/4

6:33 pm-11:23 am

1 stop15h 50m

$233

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Thu 5/28

6:10 am-5:33 pm

2 stops12h 23m

Lambert-St Louis

Tue 6/2

6:33 pm-11:23 am

1 stop15h 50m

$255

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Mon 6/1

7:34 pm-11:57 pm

1 stop29h 23m

Lambert-St Louis

Fri 6/5

11:24 am-10:45 pm

1 stop10h 21m

$261

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Tue 6/9

12:26 pm-8:47 am

2 stops21h 21m

Lambert-St Louis

Thu 6/11

6:31 pm-11:19 am

1 stop15h 48m

$264

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

What is the cheapest month to fly to St. Louis?

In general, August 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 $0. The month of November is another great option to travel to St. Louis, with average flight prices from Indianapolis averaging around $256.

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

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

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

As of May 2026, prices for Indianapolis to St. Louis flights are approximately 193% 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

5h 00m

Direct flights

None
The fastest flight from Indianapolis to St. Louis takes 5h 00m
There are no direct flights from Indianapolis to St. Louis. There are no popular flight routes from Indianapolis to St. Louis.
Search flight deals

Frequently asked questions about flying from Indianapolis to St. Louis

  • 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 5h 00m 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 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 plane model from Indianapolis to St. Louis?

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
O'Fallon
Florissant
St. Peters
Collinsville
Wentzville
Alton
Fenton
Farmington
Festus
Clayton
Eureka
Litchfield
Edwardsville
Shrewsbury
Grafton

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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