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Cheap flights from Indiana to St. Louis from $62

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Indiana to St. Louis departing on 8/13. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Indiana to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
12:26 pm - 5:22 pm
CVG
-
STL
5h 56m
1 stop
Frontier Logo
6:17 pm - 11:21 am
STL
-
CVG
16h 04m
1 stop
$121Frontier
Fri, Aug 21 - Sun, Aug 23
Frontier Logo
12:48 pm - 9:40 am
CVG
-
STL
21h 52m
1 stop
Frontier Logo
10:35 am - 11:43 am
STL
-
CVG
24h 08m
1 stop
$123Frontier
Thu, Sep 10 - Mon, Sep 14
Southwest Logo
5:00 pm - 9:40 pm
IND
-
STL
5h 40m
1 stop
Southwest Logo
4:15 pm - 10:20 pm
STL
-
IND
5h 05m
1 stop
$233Southwest
Tue, Aug 18 - Mon, Aug 24
Southwest Logo
1:00 pm - 8:40 pm
IND
-
STL
8h 40m
2 stops
Southwest Logo
6:15 pm - 10:35 pm
STL
-
IND
3h 20m
1 stop
$238Southwest
Tue, Aug 18 - Mon, Aug 24
United Airlines Logo
7:45 am - 12:11 pm
SBN
-
STL
5h 26m
1 stop
United Airlines Logo
9:30 am - 2:28 pm
STL
-
SBN
3h 58m
1 stop
$279United Airlines
Fri, Aug 7 - Thu, Aug 13
United Airlines Logo
7:15 am - 12:03 pm
DAY
-
STL
5h 48m
1 stop
United Airlines Logo
8:40 am - 2:15 pm
STL
-
DAY
4h 35m
1 stop
$280United Airlines
Sat, Aug 29 - Sun, Aug 30
Delta Logo
11:24 am - 3:54 pm
DAY
-
STL
5h 30m
1 stop
Delta Logo
12:00 pm - 5:54 pm
STL
-
DAY
4h 54m
1 stop
$289Delta
Fri, Sep 25 - Mon, Sep 28
American Airlines Logo
8:57 am - 10:20 am
ORD
-
STL
1h 23mnonstop
American Airlines Logo
5:18 pm - 7:13 pm
STL
-
ORD
1h 55mnonstop
$303American Airlines
Thu, Sep 24 - Thu, Sep 24
Delta Logo
1:59 pm - 8:42 pm
ORD
-
STL
6h 43m
1 stop
Delta Logo
10:33 am - 4:17 pm
STL
-
ORD
5h 44m
1 stop
$307Delta
Wed, Aug 26 - Thu, Aug 27
American Airlines Logo
6:00 am - 8:24 am
AZO
-
STL
3h 24m
1 stop
American Airlines Logo
8:07 pm - 12:41 am
STL
-
AZO
3h 34m
1 stop
$308American Airlines
Wed, Aug 5 - Sun, Aug 9

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United Airlines flights from Indiana to St. Louis

Our best United Airlines deals on Indiana to St. Louis flight tickets
United Airlines
Aug 7
SBN7:45 amSouth Bend/Michiana
5h 26m
1 stop
STL12:11 pmLambert-St Louis
Aug 13
STL9:30 amLambert-St Louis
3h 58m
1 stop
SBN2:28 pmSouth Bend/Michiana
$279
United Airlines
Aug 29
DAY7:15 amDayton
5h 48m
1 stop
STL12:03 pmLambert-St Louis
Aug 30
STL8:40 amLambert-St Louis
4h 35m
1 stop
DAY2:15 pmDayton
$280
United Airlines
Aug 19
FWA7:33 pmFort Wayne
4h 26m
1 stop
STL10:59 pmLambert-St Louis
Aug 26
STL10:53 amLambert-St Louis
4h 27m
1 stop
FWA4:20 pmFort Wayne
$289

Southwest flights from Indiana to St. Louis

Our best Southwest deals on Indiana to St. Louis flight tickets
Southwest
Aug 18
IND5:00 pmIndianapolis
5h 40m
1 stop
STL9:40 pmLambert-St Louis
Aug 24
STL4:15 pmLambert-St Louis
5h 05m
1 stop
IND10:20 pmIndianapolis
$233
Southwest
Aug 18
IND1:00 pmIndianapolis
8h 40m
2 stops
STL8:40 pmLambert-St Louis
Aug 24
STL6:15 pmLambert-St Louis
3h 20m
1 stop
IND10:35 pmIndianapolis
$238
Southwest
Aug 18
IND5:00 pmIndianapolis
5h 40m
1 stop
STL9:40 pmLambert-St Louis
Aug 24
STL4:15 pmLambert-St Louis
5h 05m
1 stop
IND10:20 pmIndianapolis
$246

momondo Fare Finder

 
Customize your flight search to find flights from Indiana 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 July 22, 2026.
Use the filters below to find and compare flights from Indiana to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Fri 8/21

12:26 pm-5:22 pm

1 stop5h 56m

Lambert-St Louis

Sun 8/23

6:17 pm-11:21 am

1 stop16h 04m

$121

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Thu 9/10

12:48 pm-9:40 am

1 stop21h 52m

Lambert-St Louis

Mon 9/14

10:35 am-11:43 am

1 stop24h 08m

$123

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Tue 8/18

5:00 pm-9:40 pm

1 stop5h 40m

Lambert-St Louis

Mon 8/24

4:15 pm-10:20 pm

1 stop5h 05m

$233

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Tue 8/18

1:00 pm-8:40 pm

2 stops8h 40m

Lambert-St Louis

Mon 8/24

6:15 pm-10:35 pm

1 stop3h 20m

$238

South BendSt. Louis

SBN - STL

SBNSTL

South Bend/Michiana

Fri 8/7

7:45 am-12:11 pm

1 stop5h 26m

Lambert-St Louis

Thu 8/13

9:30 am-2:28 pm

1 stop3h 58m

$279

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Sat 8/29

7:15 am-12:03 pm

1 stop5h 48m

Lambert-St Louis

Sun 8/30

8:40 am-2:15 pm

1 stop4h 35m

$280

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Fri 9/25

11:24 am-3:54 pm

1 stop5h 30m

Lambert-St Louis

Mon 9/28

12:00 pm-5:54 pm

1 stop4h 54m

$289
Quickest round-trip

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 9/24

8:57 am-10:20 am

Nonstop1h 23m

Lambert-St Louis

Thu 9/24

5:18 pm-7:13 pm

Nonstop1h 55m

$303

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 8/26

1:59 pm-8:42 pm

1 stop6h 43m

Lambert-St Louis

Thu 8/27

10:33 am-4:17 pm

1 stop5h 44m

$307

KalamazooSt. Louis

AZO - STL

AZOSTL

Kalamazoo Intl

Wed 8/5

6:00 am-8:24 am

1 stop3h 24m

Lambert-St Louis

Sun 8/9

8:07 pm-12:41 am

1 stop3h 34m

$308

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 Indiana 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, August is the cheapest month to fly from Indiana to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $268. The month of January is another great option to travel to St. Louis, with average flight prices from Indiana averaging around $268.

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

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

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

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

Cheap Indiana to St. Louis flight deals and tips

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

Fastest flight time

1h 10m

Direct flights

Every day

Airports in St. Louis

1 airport
The fastest flight from Indiana to St. Louis takes 1h 10m
Direct flights go from Indiana to St. Louis every day.
There is 1 airport in St. Louis. From Indiana there are direct flights to Lambert-St Louis (STL).
Search flight deals

Frequently asked questions about flying from Indiana to St. Louis

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

    Prices for flights from Indiana to Lambert-St Louis Airport are refreshed on a daily basis.

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

  • How old do you have to be to fly from Indiana 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 Indiana to Lambert-St Louis Airport.

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

    The travel and health documents required for your trip to Lambert-St Louis 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 Lambert-St Louis 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 Indiana to St. Louis?

Best airlines flying from Indiana to St. Louis

Compare and see reviews for airlines that fly from Indiana to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $221Free CancellationRating
7.1
11,834 reviews
Search American Airlines flights
DeltaPriceFrom $239Free CancellationRating
7.8
8,476 reviews
Search Delta flights
United AirlinesPriceFrom $248Free CancellationRating
7.4
10,020 reviews
Search United 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
Fairview Heights
Hermann
Collinsville
St. Peters
Florissant
Maryland Heights
O'Fallon
Alton
Farmington
Clayton
Wentzville
Fenton
Festus
Eureka
Edwardsville
Litchfield
Grafton
Shrewsbury

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Indiana to St. Louis. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. All flights to St. Louis from Indiana on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

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 St. Louis from Indiana.

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

Of course. momondo tracks the price of Indiana 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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