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Cheap flights from Indiana to St. Louis from $69

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 7/15. 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 Indiana to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
7:15 am - 11:49 pm
CVG
-
STL
17h 34m
1 stop
Frontier Logo
4:09 pm - 11:46 pm
STL
-
CVG
6h 37m
1 stop
$230Frontier
Tue, Jun 30 - Tue, Jul 7
Frontier Logo
12:18 pm - 5:37 pm
CVG
-
STL
6h 19m
1 stop
Frontier Logo
4:09 pm - 11:46 pm
STL
-
CVG
6h 37m
1 stop
$231Frontier
Tue, Jul 14 - Tue, Jul 21
Southwest Logo
5:25 pm - 10:05 pm
CVG
-
STL
5h 40m
1 stop
Southwest Logo
1:40 pm - 9:45 pm
STL
-
CVG
7h 05m
1 stop
$251Southwest
Thu, Sep 10 - Wed, Sep 16
American Airlines Logo
8:55 pm - 12:14 am
IND
-
STL
4h 19m
1 stop
American Airlines Logo
5:59 am - 11:38 am
STL
-
IND
4h 39m
1 stop
$255American Airlines
Mon, Aug 17 - Thu, Aug 20
Southwest Logo
8:10 am - 10:30 am
CVG
-
STL
3h 20m
1 stop
Southwest Logo
10:15 am - 8:10 pm
STL
-
CVG
8h 55m
2 stops
$256Southwest
Thu, Sep 10 - Wed, Sep 16
Delta Logo
2:31 pm - 8:37 pm
ORD
-
STL
6h 06m
1 stop
Delta Logo
10:19 am - 4:23 pm
STL
-
ORD
6h 04m
1 stop
$257Delta
Sat, Jul 18 - Tue, Jul 21
Delta Logo
11:30 am - 5:24 pm
ORD
-
STL
5h 54m
1 stop
Delta Logo
1:54 pm - 8:31 pm
STL
-
ORD
6h 37m
1 stop
$258Delta
Wed, Jul 22 - Wed, Jul 29
United Airlines Logo
12:45 pm - 2:11 pm
ORD
-
STL
1h 26mnonstop
United Airlines Logo
1:29 pm - 3:00 pm
STL
-
ORD
1h 31mnonstop
$261United Airlines
Thu, Oct 15 - Mon, Oct 19
United Airlines Logo
10:00 pm - 11:29 pm
ORD
-
STL
1h 29mnonstop
United Airlines Logo
7:20 am - 9:00 am
STL
-
ORD
1h 40mnonstop
$266United Airlines
Thu, Aug 6 - Sun, Aug 9
American Airlines Logo
5:25 am - 8:31 am
FWA
-
STL
4h 06m
1 stop
American Airlines Logo
5:03 pm - 12:47 am
STL
-
FWA
6h 44m
1 stop
$319American Airlines
Thu, Jun 11 - Mon, Jun 15

American Airlines flights from Indiana to St. Louis

Our best American Airlines deals on Indiana to St. Louis flight tickets
American Airlines
Aug 17
IND8:55 pmIndianapolis
4h 19m
1 stop
STL12:14 amLambert-St Louis
Aug 20
STL5:59 amLambert-St Louis
4h 39m
1 stop
IND11:38 amIndianapolis
$255
American Airlines
Aug 4
CVG10:05 amCincinnati Cinci./N. Kentucky
4h 48m
1 stop
STL1:53 pmLambert-St Louis
Aug 4
STL5:58 pmLambert-St Louis
5h 32m
1 stop
CVG12:30 amCincinnati Cinci./N. Kentucky
$295
American Airlines
Jun 30
ORD11:00 pmChicago O'Hare Intl
1h 16m
STL12:16 amLambert-St Louis
Jul 7
STL5:10 amLambert-St Louis
5h 50m
1 stop
ORD11:00 amChicago O'Hare Intl
$299

Frontier flights from Indiana to St. Louis

Our best Frontier deals on Indiana to St. Louis flight tickets
Frontier
Jun 30
CVG7:15 amCincinnati Cinci./N. Kentucky
17h 34m
1 stop
STL11:49 pmLambert-St Louis
Jul 7
STL4:09 pmLambert-St Louis
6h 37m
1 stop
CVG11:46 pmCincinnati Cinci./N. Kentucky
$230
Frontier
Jul 14
CVG12:18 pmCincinnati Cinci./N. Kentucky
6h 19m
1 stop
STL5:37 pmLambert-St Louis
Jul 21
STL4:09 pmLambert-St Louis
6h 37m
1 stop
CVG11:46 pmCincinnati Cinci./N. Kentucky
$231
Frontier
Jun 12
IND12:14 pmIndianapolis
21h 38m
1 stop
STL8:52 amLambert-St Louis
Jun 16
STL6:31 pmLambert-St Louis
15h 48m
1 stop
IND11:19 amIndianapolis
$238

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 June 1, 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

Tue 6/30

7:15 am-11:49 pm

1 stop17h 34m

Lambert-St Louis

Tue 7/7

4:09 pm-11:46 pm

1 stop6h 37m

$230

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Tue 7/14

12:18 pm-5:37 pm

1 stop6h 19m

Lambert-St Louis

Tue 7/21

4:09 pm-11:46 pm

1 stop6h 37m

$231

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Thu 9/10

5:25 pm-10:05 pm

1 stop5h 40m

Lambert-St Louis

Wed 9/16

1:40 pm-9:45 pm

1 stop7h 05m

$251

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Mon 8/17

8:55 pm-12:14 am

1 stop4h 19m

Lambert-St Louis

Thu 8/20

5:59 am-11:38 am

1 stop4h 39m

$255

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Thu 9/10

8:10 am-10:30 am

1 stop3h 20m

Lambert-St Louis

Wed 9/16

10:15 am-8:10 pm

2 stops8h 55m

$256

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Sat 7/18

2:31 pm-8:37 pm

1 stop6h 06m

Lambert-St Louis

Tue 7/21

10:19 am-4:23 pm

1 stop6h 04m

$257

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 7/22

11:30 am-5:24 pm

1 stop5h 54m

Lambert-St Louis

Wed 7/29

1:54 pm-8:31 pm

1 stop6h 37m

$258
Quickest round-trip

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 10/15

12:45 pm-2:11 pm

Nonstop1h 26m

Lambert-St Louis

Mon 10/19

1:29 pm-3:00 pm

Nonstop1h 31m

$261

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 8/6

10:00 pm-11:29 pm

Nonstop1h 29m

Lambert-St Louis

Sun 8/9

7:20 am-9:00 am

Nonstop1h 40m

$266

Fort WayneSt. Louis

FWA - STL

FWASTL

Fort Wayne

Thu 6/11

5:25 am-8:31 am

1 stop4h 06m

Lambert-St Louis

Mon 6/15

5:03 pm-12:47 am

1 stop6h 44m

$319

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, November 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 $156. The month of September is another great option to travel to St. Louis, with average flight prices from Indiana averaging around $156.

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
DeltaPriceFrom $218Free CancellationRating
7.9
8,398 reviews
Search Delta flights
American AirlinesPriceFrom $221Free CancellationRating
7.1
11,640 reviews
Search American Airlines flights
United AirlinesPriceFrom $248Free CancellationRating
7.4
9,778 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
Maryland Heights
O'Fallon
Florissant
St. Peters
Collinsville
Alton
Wentzville
Fenton
Farmington
Festus
Eureka
Litchfield
Clayton
Edwardsville
Shrewsbury
Grafton

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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