HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$63+ Cheap flights from Indiana to St. Louis (STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/21. Fares are subject to change and may not be available on all flights or dates of travel.
IND — STL
Jan 15 — Jan 221
Thu 1/15
Thu 1/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Indiana to St. Louis with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Indiana to St. Louis

Cheapest flights from Indiana to St. Louis
Explore the most affordable flight options available from Indiana to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 16, 2025.

This American Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3112:10 pmORD - STL
Nonstop1h 26mAmerican Airlines
Tue 1/136:00 amSTL - ORD
Nonstop1h 27mAmerican Airlines
Deal found 12/16$188
This United Airlines deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:50 pmORD - STL
Nonstop1h 28mUnited Airlines
Tue 1/611:20 amSTL - ORD
Nonstop1h 35mUnited Airlines
Deal found 12/14$193
This Southwest deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:25 amMDW - STL
Nonstop1h 15mSouthwest
Tue 1/63:05 pmSTL - MDW
1 stop5h 00mSouthwest
Deal found 12/14$203
This Frontier deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3111:23 amORD - STL
1 stop11h 10mFrontier
Thu 1/110:42 amSTL - ORD
1 stop7h 51mFrontier
Deal found 12/15$208
This United Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/249:10 pmORD - STL
Nonstop1h 33mUnited Airlines
Thu 12/258:05 amSTL - ORD
Nonstop1h 35mUnited Airlines
Deal found 12/16$215
This Orbitz deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/235:05 amCVG - STL
1 stop18h 28mFrontier
Sun 1/410:57 amSTL - CVG
1 stop7h 21mFrontier
Deal found 12/14$217
This American Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:07 amORD - STL
Nonstop1h 28mAmerican Airlines
Thu 12/259:08 amSTL - ORD
Nonstop1h 27mAmerican Airlines
Deal found 12/16$226
This American Airlines deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:57 pmORD - STL
Nonstop1h 26mAmerican Airlines
Tue 1/68:13 amSTL - ORD
1 stop5h 09mAmerican Airlines
Deal found 12/14$233
This United Airlines deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:10 amSBN - STL
1 stop4h 17mUnited Airlines
Sat 1/36:35 pmSTL - SBN
1 stop3h 45mUnited Airlines
Deal found 12/15$249
This United Airlines deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:28 amDAY - STL
1 stop6h 59mUnited Airlines
Sat 1/36:35 pmSTL - DAY
1 stop4h 09mUnited Airlines
Deal found 12/14$259
This United Airlines deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:25 pmFWA - STL
1 stop4h 18mUnited Airlines
Sat 1/33:10 pmSTL - FWA
1 stop4h 34mUnited Airlines
Deal found 12/15$259
This Expedia deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/232:01 pmMDW - STL
1 stop20h 01mFrontier
Thu 12/2510:42 amSTL - MDW
1 stop6h 56mFrontier
Deal found 12/15$267

Find flight deals from Indiana to St. Louis

Keep the following information in mind while searching for Indiana to St. Louis flight deals. Data was last updated December 16, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$134
(Kiwi.com)

One-way from

$63
(Trip.com)

Popular in

September

Cheapest in

November

Average price

$388
Provider with most accurate pricing for Indianapolis-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Indianapolis-Lambert-St Louis flights.
Search Deals
From Indiana to Lambert-St Louis
Search Deals
One-way flight from Indiana to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($28 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated December 16, 2025.
Use the filters below to find and compare flights from Indiana to St. Louis that are best for you.

Fly from

Indiana

Fly to

St. Louis

Route

Depart

Return

Price

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Thu 1/8

9:55 am-11:15 am

Nonstop1h 20m

Lambert-St Louis

Mon 1/12

5:55 pm-7:05 pm

Nonstop1h 10m

$171

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Mon 1/12

9:25 pm-10:58 pm

Nonstop1h 33m

Lambert-St Louis

Mon 1/26

6:40 pm-8:23 pm

Nonstop1h 43m

$171

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Thu 1/8

9:55 am-11:15 am

Nonstop1h 20m

Lambert-St Louis

Thu 1/8

5:55 pm-7:05 pm

Nonstop1h 10m

$171

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Tue 1/27

9:55 am-11:15 am

Nonstop1h 20m

Lambert-St Louis

Mon 2/2

1:10 pm-2:15 pm

Nonstop1h 05m

$171

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Tue 1/20

9:50 am-4:45 pm

1 stop6h 55m

Lambert-St Louis

Wed 1/21

6:35 am-12:49 pm

1 stop6h 14m

$173

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 1/8

4:49 pm-6:14 pm

Nonstop1h 25m

Lambert-St Louis

Mon 1/12

6:44 pm-8:15 pm

Nonstop1h 31m

$173

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Tue 1/13

9:50 am-3:00 pm

1 stop5h 10m

Lambert-St Louis

Tue 1/20

7:10 am-11:59 am

1 stop4h 49m

$173

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Wed 1/21

10:46 am-4:07 pm

1 stop5h 21m

Lambert-St Louis

Wed 1/28

1:00 pm-5:29 pm

1 stop4h 29m

$173

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Tue 1/6

6:05 pm-10:33 pm

1 stop29h 28m

Lambert-St Louis

Sat 1/10

7:43 pm-1:13 pm

1 stop16h 30m

$190

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Tue 1/13

3:36 pm-6:51 am

2 stops16h 15m

Lambert-St Louis

Tue 1/20

5:42 pm-1:00 pm

1 stop18h 18m

$190

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Indiana to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Indiana with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Indiana to St. Louis

What is the cheapest month to book a flight from Indiana to St. Louis?

Currently, September is the cheapest month in which you can book a flight from Indiana to St. Louis (average of $164). Flying from Indiana to St. Louis in December is currently the most expensive (average of $286). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IN to STL?

Find hourly flight availability from Indiana to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 16, 2025.

It’s optimal to fly from Indiana to St. Louis in the evening. By choosing this option you can save up to 23% on the cost of your flight, compared to a flight at noon.

Related info for your journey

Find useful and relevant information for your journey from Indiana to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to St. Louis from Indiana?

    Lambert-St Louis (STL), located 12.7 mi from the city center, is the airport you fly into when you book flights from Indiana to St. Louis.

  • How long is the flight from Indiana to St. Louis?

    For as low as $171, Southwest can have you in St. Louis from Indiana in 1h 20m. There are 251 mi between Indiana and St. Louis. All flights are typically nonstop.

  • What are the most popular routes from Indiana to St. Louis?

    Most travelers choose Chicago O'Hare Intl - Lambert-St Louis, Chicago Midway - Lambert-St Louis or Cincinnati Cinci./N. Kentucky - Lambert-St Louis when deciding on the best route from Indiana to St. Louis.

  • Can I find deals for flights from Indiana to St. Louis that include hotel bookings?

    Yes. In addition to deals on Indiana to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Indiana to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Indiana to St. Louis.

  • Can I find deals for business class flights from Indiana to St. Louis?

    Yes. Cheapflights offers flight deals from Indiana to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Indiana to St. Louis?

    Currently, September is the cheapest month in which you can book a flight from Indiana to St. Louis (average of $164). Flying from Indiana to St. Louis in December is currently the most expensive (average of $286). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Swansea
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Indiana to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Kansas City flights
Newark to St. Louis flights
Hobby to Kansas City flights
LaGuardia to Kansas City flights
Denver to St. Louis flights
Dallas/Fort Worth to St. Louis flights
Los Angeles to Kansas City flights
O'Hare Intl to Kansas City flights
Dallas/Fort Worth to Kansas City flights
Denver to Kansas City flights
LaGuardia to St. Louis flights
George Bush Intcntl to Kansas City flights
Dulles Intl to Kansas City flights
Newark to Kansas City flights
Dulles Intl to St. Louis flights
John F Kennedy Intl to St. Louis flights
Atlanta to St. Louis flights
Boston to Kansas City flights
San Francisco to Kansas City flights
Baltimore to St. Louis flights
Minneapolis to Kansas City flights
Los Angeles to St. Louis flights
Boston to St. Louis flights
Baltimore to Kansas City flights
Sky Harbor Intl to Kansas City flights
Reagan-National to St. Louis flights
O'Hare Intl to St. Louis flights
Seattle to Kansas City flights
Reagan-National to Kansas City flights
Philadelphia to St. Louis flights
Atlanta to Kansas City flights
Philadelphia to Kansas City flights
Seattle to St. Louis flights
Detroit to St. Louis flights
Hobby to St. Louis flights
Orlando to St. Louis flights
San Francisco to St. Louis flights
Pittsburgh to Kansas City flights
Minneapolis to St. Louis flights
Tampa to Kansas City flights
Sky Harbor Intl to St. Louis flights
Midway to Kansas City flights
Raleigh to Kansas City flights
Miami to Kansas City flights
George Bush Intcntl to St. Louis flights
Orlando to Kansas City flights
Ontario to Kansas City flights
Love Field to Kansas City flights
Portland to Kansas City flights
Raleigh to St. Louis flights

Top 3 airlines flying from Indiana to St. Louis

Discover the top 3 airlines that operate flights from Indiana to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$196Average$333FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$213Average$365FlexibilityNo cancel feeOn-time69%
DeltaCheapest$218Average$258FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.