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Cheap flights from Indianapolis to St. Louis from $80

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 2/19. 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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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.
Delta Logo
12:10 pm - 4:37 pm
IND
-
STL
5h 27m1 stop
Delta Logo
11:23 am - 7:08 pm
STL
-
IND
6h 45m1 stop
$195Delta
mié., ene. 28 - mié., feb. 4
Multiple Airlines Logo
12:21 pm - 11:33 pm
IND
-
STL
12h 12m1 stop
Multiple Airlines Logo
5:42 pm - 9:43 am
STL
-
IND
15h 01m1 stop
$209Multiple Airlines
mié., ene. 21 - dom., ene. 25
Multiple Airlines Logo
12:21 pm - 11:33 pm
IND
-
STL
12h 12m1 stop
Multiple Airlines Logo
5:42 pm - 9:43 am
STL
-
IND
15h 01m1 stop
$214Multiple Airlines
mié., ene. 21 - dom., ene. 25
United Airlines Logo
6:10 pm - 10:59 pm
IND
-
STL
5h 49m1 stop
United Airlines Logo
7:41 am - 2:58 pm
STL
-
IND
6h 17m1 stop
$215United Airlines
mié., feb. 18 - jue., feb. 19
Southwest Logo
6:40 am - 12:20 pm
IND
-
STL
6h 40m1 stop
Southwest Logo
2:55 pm - 11:05 pm
STL
-
IND
7h 10m2 stops
$220Southwest
mié., feb. 18 - jue., feb. 19
Southwest Logo
10:30 am - 7:05 pm
IND
-
STL
9h 35m2 stops
Southwest Logo
2:55 pm - 11:05 pm
STL
-
IND
7h 10m2 stops
$226Southwest
mié., feb. 18 - jue., feb. 19
Multiple Airlines Logo
12:21 pm - 11:33 pm
IND
-
STL
12h 12m1 stop
Multiple Airlines Logo
5:42 pm - 11:26 am
STL
-
IND
40h 44m2 stops
$234Multiple Airlines
mié., ene. 21 - dom., ene. 25
Multiple Airlines Logo
12:21 pm - 11:33 pm
IND
-
STL
12h 12m1 stop
Multiple Airlines Logo
5:42 pm - 11:43 am
STL
-
IND
17h 01m2 stops
$238Multiple Airlines
mié., ene. 21 - dom., ene. 25
Multiple Airlines Logo
7:41 pm - 6:51 am
IND
-
STL
12h 10m1 stop
Multiple Airlines Logo
3:49 pm - 8:32 am
STL
-
IND
15h 43m1 stop
$265Multiple Airlines
vie., feb. 13 - dom., feb. 15
Multiple Airlines Logo
3:12 pm - 12:27 am
IND
-
STL
10h 15m1 stop
Multiple Airlines Logo
3:49 pm - 8:32 am
STL
-
IND
15h 43m1 stop
$267Multiple Airlines
vie., feb. 20 - dom., feb. 22

Delta flights from Indianapolis to St. Louis

Our best Delta deals on Indianapolis to St. Louis flight tickets
Delta
Jan 28
IND12:10 pmIndianapolis
5h 27m
1 stop
STL4:37 pmLambert-St Louis
Feb 4
STL11:23 amLambert-St Louis
6h 45m
1 stop
IND7:08 pmIndianapolis
$195
Delta
May 22
IND7:50 pmIndianapolis
4h 11m
1 stop
STL11:01 pmLambert-St Louis
May 26
STL7:20 amLambert-St Louis
6h 49m
1 stop
IND3:09 pmIndianapolis
$316
Delta
Jun 18
IND10:02 amIndianapolis
5h 35m
1 stop
STL2:37 pmLambert-St Louis
Jun 21
STL7:05 pmLambert-St Louis
4h 29m
1 stop
IND12:34 amIndianapolis
$317

United Airlines flights from Indianapolis to St. Louis

Our best United Airlines deals on Indianapolis to St. Louis flight tickets
United Airlines
Feb 18
IND6:10 pmIndianapolis
5h 49m
1 stop
STL10:59 pmLambert-St Louis
Feb 19
STL7:41 amLambert-St Louis
6h 17m
1 stop
IND2:58 pmIndianapolis
$215
United Airlines
Mar 29
IND4:10 pmIndianapolis
5h 58m
1 stop
STL9:08 pmLambert-St Louis
Apr 2
STL6:30 amLambert-St Louis
3h 47m
1 stop
IND11:17 amIndianapolis
$276
United Airlines
Jan 29
IND11:25 amIndianapolis
5h 38m
1 stop
STL4:03 pmLambert-St Louis
Jan 31
STL9:57 amLambert-St Louis
4h 00m
1 stop
IND2:57 pmIndianapolis
$306

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 enero 8, 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

mié. 1/28

12:10 pm-4:37 pm

1 stop5h 27m

Lambert-St Louis

mié. 2/4

11:23 am-7:08 pm

1 stop6h 45m

$195

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

mié. 1/21

12:21 pm-11:33 pm

1 stop12h 12m

Lambert-St Louis

dom. 1/25

5:42 pm-9:43 am

1 stop15h 01m

$209

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

mié. 1/21

12:21 pm-11:33 pm

1 stop12h 12m

Lambert-St Louis

dom. 1/25

5:42 pm-9:43 am

1 stop15h 01m

$214

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

mié. 2/18

6:10 pm-10:59 pm

1 stop5h 49m

Lambert-St Louis

jue. 2/19

7:41 am-2:58 pm

1 stop6h 17m

$215

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

mié. 2/18

6:40 am-12:20 pm

1 stop6h 40m

Lambert-St Louis

jue. 2/19

2:55 pm-11:05 pm

2 stops7h 10m

$220

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

mié. 2/18

10:30 am-7:05 pm

2 stops9h 35m

Lambert-St Louis

jue. 2/19

2:55 pm-11:05 pm

2 stops7h 10m

$226

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

mié. 1/21

12:21 pm-11:33 pm

1 stop12h 12m

Lambert-St Louis

dom. 1/25

5:42 pm-11:26 am

2 stops40h 44m

$234

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

mié. 1/21

12:21 pm-11:33 pm

1 stop12h 12m

Lambert-St Louis

dom. 1/25

5:42 pm-11:43 am

2 stops17h 01m

$238

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

vie. 2/13

7:41 pm-6:51 am

1 stop12h 10m

Lambert-St Louis

dom. 2/15

3:49 pm-8:32 am

1 stop15h 43m

$265

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

vie. 2/20

3:12 pm-12:27 am

1 stop10h 15m

Lambert-St Louis

dom. 2/22

3:49 pm-8:32 am

1 stop15h 43m

$267

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 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, 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 April is another great option to travel to St. Louis, with average flight prices from Indianapolis averaging around $289.

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

As of January 2026, prices for Indianapolis to St. Louis flights are approximately 11% cheaper 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

None
The fastest flight from Indianapolis to St. Louis takes 4h 11m
There are no direct flights from Indianapolis to St. Louis. There are no popular flight routes from Indianapolis to St. Louis.
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
11,094 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
O'Fallon
Maryland Heights
Florissant
Fenton
Collinsville
St. Peters
Wentzville
Alton
Farmington
Clayton
Eureka
Festus
Edwardsville
Glencoe
Litchfield
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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