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St. Louis

$49+ 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 2/14. Fares are subject to change and may not be available on all flights or dates of travel.
IND — STL
dic. 13 — dic. 201
sáb. 12/13
sáb. 12/20
1 adult, Economy
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Cheap 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 noviembre 13, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$117
(American Airlines)

One-way from

$49
(Southwest)

Popular in

September

Cheapest in

November

Average price

$256
Provider with most accurate pricing for Indianapolis-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Indianapolis-Lambert-St Louis flights.
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From Indiana to Lambert-St Louis
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One-way flight from Indiana to Lambert-St Louis
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Highest demand for flights based on searches. 3% potential increase in price ($14 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find 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 noviembre 13, 2025.

This Expedia deal was found by Cheapflights users on 11/11. 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.
jue. 12/45:05 amORD - STL
1 stop6h 02mFrontier
lun. 12/810:47 amSTL - ORD
1 stop11h 37mFrontier
Deal found 11/11$120
This Southwest deal was found by Cheapflights users on 11/10. 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.
jue. 12/187:20 pmMDW - STL
Nonstop1h 15mSouthwest
dom. 1/185:55 pmSTL - MDW
Nonstop1h 10mSouthwest
Deal found 11/10$134
This American Airlines deal was found by Cheapflights users on 11/10. 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.
jue. 12/187:07 amORD - STL
Nonstop1h 28mAmerican Airlines
dom. 1/1811:05 amSTL - ORD
Nonstop1h 29mAmerican Airlines
Deal found 11/10$134
This Southwest deal was found by Cheapflights users on 11/13. 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.
lun. 12/89:05 pmMDW - STL
Nonstop1h 15mSouthwest
mié. 12/101:50 pmSTL - MDW
Nonstop1h 05mSouthwest
Deal found 11/13$144
This American Airlines deal was found by Cheapflights users on 11/13. 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.
lun. 12/810:15 pmORD - STL
Nonstop1h 23mAmerican Airlines
mié. 12/105:05 amSTL - ORD
Nonstop1h 30mAmerican Airlines
Deal found 11/13$144
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/217:00 amORD - STL
1 stop27h 02mFrontier
lun. 11/249:54 pmSTL - ORD
1 stop21h 45mFrontier
Deal found 11/11$156
This Delta deal was found by Cheapflights users on 11/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/166:00 amMDW - STL
1 stop4h 45mDelta
jue. 1/16:05 amSTL - MDW
1 stop5h 01mDelta
Deal found 11/10$157
This Delta deal was found by Cheapflights users on 11/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/311:35 pmORD - STL
1 stop7h 06mDelta
mar. 1/1312:00 pmSTL - ORD
1 stop4h 43mDelta
Deal found 11/13$157
This eDestinos deal was found by Cheapflights users on 11/12. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/3112:39 pmORD - STL
1 stop21h 01mFrontier
mar. 1/135:11 pmSTL - ORD
2 stops18h 57mFrontier
Deal found 11/12$158
This Kiwi.com deal was found by Cheapflights users on 11/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/47:23 pmMDW - STL
1 stop14h 24mFrontier
dom. 12/1410:42 amSTL - MDW
1 stop7h 30mFrontier
Deal found 11/12$163
This Kiwi.com deal was found by Cheapflights users on 11/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/2112:12 pmMDW - STL
1 stop21h 50mFrontier
dom. 11/233:14 pmSTL - MDW
1 stop7h 19mFrontier
Deal found 11/12$167
This Kiwi.com deal was found by Cheapflights users on 11/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/217:00 amORD - STL
1 stop27h 02mFrontier
dom. 11/2310:24 amSTL - ORD
1 stop7h 35mFrontier
Deal found 11/12$167

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 noviembre 13, 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

jue. 1/1

11:25 am-12:35 pm

Nonstop1h 10m

Lambert-St Louis

lun. 1/5

2:30 pm-3:40 pm

Nonstop1h 10m

$134

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

mié. 4/1

2:40 pm-7:55 pm

1 stop5h 15m

Lambert-St Louis

mié. 4/8

6:35 am-3:00 pm

1 stop8h 25m

$137

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

mar. 12/30

10:12 am-10:33 pm

1 stop12h 21m

Lambert-St Louis

jue. 1/1

10:42 am-10:24 pm

1 stop11h 42m

$156

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

mié. 12/17

5:29 pm-9:57 pm

1 stop4h 28m

Lambert-St Louis

jue. 1/1

6:05 am-11:06 am

1 stop5h 01m

$157

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

mié. 12/17

10:49 am-4:21 pm

1 stop5h 32m

Lambert-St Louis

mié. 12/31

6:05 am-11:06 am

1 stop5h 01m

$157

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

mié. 12/31

1:35 pm-8:41 pm

1 stop7h 06m

Lambert-St Louis

mar. 1/13

12:00 pm-7:35 pm

1 stop7h 35m

$157

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

mar. 3/31

7:00 pm-11:10 pm

1 stop4h 10m

Lambert-St Louis

mar. 4/7

5:30 pm-9:56 pm

1 stop4h 26m

$157

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

lun. 12/8

10:05 am-4:05 pm

1 stop6h 00m

Lambert-St Louis

mié. 12/10

12:00 pm-5:10 pm

1 stop5h 10m

$164

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

lun. 2/9

1:45 pm-8:10 pm

1 stop6h 25m

Lambert-St Louis

mié. 2/11

8:15 am-12:15 pm

1 stop4h 00m

$164

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

lun. 2/23

1:25 pm-7:30 pm

1 stop6h 05m

Lambert-St Louis

mar. 2/24

6:50 am-1:55 pm

2 stops7h 05m

$169

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

Showing 1-10 of 60 results
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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 October is currently the most expensive (average of $278). 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 noviembre 13, 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 $134, Southwest can have you in St. Louis from Indiana in 1h 10m. There are 251 mi between Indiana and St. Louis. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Indiana to St. Louis one-way?

    For one-way options, check prices for Southwest. According to our data, you can fly for as low as $49. Users have also found prices from $59 and $66 on United Airlines and Frontier, respectively.

  • 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 October is currently the most expensive (average of $278). 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
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

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Alternative routes for Indiana to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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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 noviembre 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$196Average$281FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$213Average$363FlexibilityNo cancel feeOn-time69%
DeltaCheapest$218Average$359FlexibilityNo cancel feeOn-timeN/A

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