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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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
IND — STL
nov. 29 — dic. 61
sáb. 11/29
sáb. 12/6
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 octubre 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$119
(Mytrip)

One-way from

$49
(Southwest)

Popular in

July

Cheapest in

November

Average price

$326
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. 1% potential increase in price ($6 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in October 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 octubre 30, 2025.

This Mytrip deal was found by Cheapflights users on 10/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/1810:24 amCVG - STL
1 stop23h 43mFrontier
jue. 11/204:13 pmSTL - CVG
1 stop5h 49mFrontier
Deal found 10/29$119
This Booking.com deal was found by Cheapflights users on 10/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/1210:24 amCVG - STL
1 stop23h 43mFrontier
jue. 11/137:45 pmSTL - CVG
1 stop23h 35mFrontier
Deal found 10/28$121
This Frontier deal was found by Cheapflights users on 10/29. 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.
jue. 11/1311:00 amCVG - STL
1 stop7h 27mFrontier
lun. 11/172:12 pmSTL - CVG
1 stop8h 59mFrontier
Deal found 10/29$130
This United Airlines deal was found by Cheapflights users on 10/28. 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.
mié. 12/248:10 pmORD - STL
Nonstop1h 33mUnited Airlines
sáb. 1/104:49 pmSTL - ORD
Nonstop1h 43mUnited Airlines
Deal found 10/28$134
This Booking.com deal was found by Cheapflights users on 10/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/45:05 amCVG - STL
1 stop18h 28mFrontier
sáb. 12/63:30 pmSTL - CVG
1 stop16h 09mFrontier
Deal found 10/27$141
This Trip.com deal was found by Cheapflights users on 10/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/135:11 amORD - STL
1 stop5h 01mFrontier
sáb. 11/157:45 pmSTL - ORD
1 stop28h 30mFrontier
Deal found 10/28$142
This Frontier deal was found by Cheapflights users on 10/28. 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.
jue. 12/45:05 amORD - STL
1 stop6h 02mFrontier
vie. 12/510:42 amSTL - ORD
1 stop11h 42mFrontier
Deal found 10/28$143
This Southwest deal was found by Cheapflights users on 10/29. 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.
mar. 12/3010:00 amMDW - STL
Nonstop1h 25mSouthwest
jue. 1/16:05 pmSTL - MDW
1 stop4h 30mSouthwest
Deal found 10/29$144
This Trip.com deal was found by Cheapflights users on 10/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/126:05 pmORD - STL
1 stop15h 02mFrontier
lun. 11/177:45 pmSTL - ORD
1 stop23h 53mFrontier
Deal found 10/29$148
This Mytrip deal was found by Cheapflights users on 10/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/126:05 pmORD - STL
1 stop15h 02mFrontier
dom. 11/167:02 pmSTL - ORD
1 stop5h 57mFrontier
Deal found 10/27$152
This Booking.com deal was found by Cheapflights users on 10/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/85:05 amCVG - STL
1 stop18h 28mFrontier
vie. 12/1210:42 amSTL - CVG
1 stop4h 41mFrontier
Deal found 10/28$155
This Delta deal was found by Cheapflights users on 10/29. 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.
jue. 12/47:02 pmMDW - STL
1 stop4h 27mDelta
lun. 12/85:12 pmSTL - MDW
1 stop6h 35mDelta
Deal found 10/29$157

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 octubre 30, 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

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

mar. 11/18

10:24 am-9:07 am

1 stop23h 43m

Lambert-St Louis

jue. 11/20

4:13 pm-11:02 pm

1 stop5h 49m

$119

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

mié. 11/12

10:24 am-9:07 am

1 stop23h 43m

Lambert-St Louis

jue. 11/13

7:45 pm-8:20 pm

1 stop23h 35m

$121

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

jue. 12/4

5:05 am-10:33 pm

1 stop18h 28m

Lambert-St Louis

sáb. 12/6

3:30 pm-8:39 am

1 stop16h 09m

$141

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

lun. 12/8

5:05 am-10:33 pm

1 stop18h 28m

Lambert-St Louis

vie. 12/12

10:42 am-4:23 pm

1 stop4h 41m

$155

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

jue. 12/4

7:02 pm-11:29 pm

1 stop4h 27m

Lambert-St Louis

lun. 12/8

5:12 pm-11:47 pm

1 stop6h 35m

$157

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

jue. 12/4

1:20 pm-5:56 pm

1 stop4h 36m

Lambert-St Louis

lun. 12/8

7:02 pm-12:01 am

1 stop4h 59m

$157

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

lun. 12/8

2:30 pm-8:47 pm

1 stop6h 17m

Lambert-St Louis

jue. 12/11

7:02 pm-12:01 am

1 stop4h 59m

$157

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

jue. 12/4

10:50 am-12:15 pm

Nonstop1h 25m

Lambert-St Louis

lun. 12/8

6:42 pm-8:12 pm

Nonstop1h 30m

$158

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

lun. 12/8

2:30 pm-8:47 pm

1 stop6h 17m

Lambert-St Louis

mar. 12/9

6:00 am-1:50 pm

2 stops7h 50m

$162

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

mié. 11/12

9:30 pm-1:57 pm

1 stop17h 27m

Lambert-St Louis

dom. 11/16

7:45 pm-8:20 pm

1 stop23h 35m

$172

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

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 $166). Flying from Indiana to St. Louis in October is currently the most expensive (average of $280). 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 octubre 30, 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 $158, Frontier can have you in St. Louis from Indiana in 1h 25m. There are 258 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 $49 and $61 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 $166). Flying from Indiana to St. Louis in October is currently the most expensive (average of $280). 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

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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 octubre 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$196Average$280FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$213Average$363FlexibilityNo cancel feeOn-time69%
DeltaCheapest$218Average$359FlexibilityNo cancel feeOn-timeN/A

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