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St. Louis

$73+ 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 5/29. Fares are subject to change and may not be available on all flights or dates of travel.
IND — STL
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$140
(Southern / Mokulele)

One-way from

$73
(Southern / Mokulele)

Popular in

January

Cheapest in

May

Average price

$275
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. 16% potential increase in price ($67 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 1, 2025.

This Southern / Mokulele deal was found by Cheapflights users on 4/30. 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 Southern / Mokulele is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/298:25 amORD - STL
1 stop11h 45mSouthern / Mokulele
Thu 6/55:15 pmSTL - ORD
1 stop14h 25mSouthern / Mokulele
Deal found 4/30$140
This Frontier deal was found by Cheapflights users on 4/30. 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.
Sat 6/146:20 amMDW - STL
1 stop7h 47mFrontier
Sat 6/212:52 pmSTL - MDW
1 stop7h 36mFrontier
Deal found 4/30$161
This Frontier deal was found by Cheapflights users on 4/30. 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 5/285:03 pmORD - STL
1 stop6h 41mFrontier
Wed 6/45:45 pmSTL - ORD
1 stop6h 51mFrontier
Deal found 4/30$162
This Booking.com deal was found by Cheapflights users on 4/30. 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.
Wed 5/2112:57 pmCVG - STL
1 stop11h 47mFrontier
Sat 5/245:35 pmSTL - CVG
1 stop16h 24mFrontier
Deal found 4/30$181
This CheapOair deal was found by Cheapflights users on 4/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/174:15 pmORD - STL
1 stop7h 51mMultiple Airlines
Mon 5/191:00 pmSTL - ORD
1 stop3h 32mMultiple Airlines
Deal found 4/30$190
This Delta deal was found by Cheapflights users on 4/30. 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.
Sat 7/511:16 amDAY - STL
1 stop4h 21mDelta
Sat 8/96:00 amSTL - DAY
1 stop4h 20mDelta
Deal found 4/30$214
This Southwest deal was found by Cheapflights users on 4/30. 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.
Sat 5/246:35 amMDW - STL
Nonstop1h 10mSouthwest
Sun 5/257:00 amSTL - MDW
Nonstop1h 05mSouthwest
Deal found 4/30$217
This American Airlines deal was found by Cheapflights users on 4/30. 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.
Sat 5/2411:47 amORD - STL
Nonstop1h 20mAmerican Airlines
Sun 5/257:30 amSTL - ORD
Nonstop1h 19mAmerican Airlines
Deal found 4/30$218
This Delta deal was found by Cheapflights users on 4/30. 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.
Thu 7/176:15 amSBN - STL
1 stop4h 26mDelta
Thu 7/246:40 amSTL - SBN
1 stop5h 54mDelta
Deal found 4/30$219
This Delta deal was found by Cheapflights users on 4/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2811:17 amIND - STL
1 stop4h 18mDelta
Wed 6/46:00 amSTL - IND
1 stop4h 48mDelta
Deal found 4/28$223
This Delta deal was found by Cheapflights users on 4/29. 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.
Fri 6/206:01 pmFWA - STL
1 stop4h 33mDelta
Wed 6/2510:48 amSTL - FWA
1 stop5h 33mDelta
Deal found 4/29$229
This American Airlines deal was found by Cheapflights users on 4/30. 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.
Fri 5/308:38 amDAY - STL
1 stop5h 14mAmerican Airlines
Fri 6/64:37 pmSTL - DAY
1 stop4h 33mAmerican Airlines
Deal found 4/30$234

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 May 1, 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

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 5/29

8:25 am-8:10 pm

1 stop11h 45m

Lambert-St Louis

Tue 6/3

12:15 pm-3:50 pm

1 stop3h 35m

$140

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Sat 6/14

6:20 am-2:07 pm

1 stop7h 47m

Lambert-St Louis

Sat 6/21

2:52 pm-10:28 pm

1 stop7h 36m

$161

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 5/28

5:03 pm-11:44 pm

1 stop6h 41m

Lambert-St Louis

Wed 6/4

5:45 pm-12:36 am

1 stop6h 51m

$162

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Wed 5/21

12:57 pm-11:44 pm

1 stop11h 47m

Lambert-St Louis

Sat 5/24

5:35 pm-10:59 am

1 stop16h 24m

$181

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Sat 5/17

4:15 pm-12:06 am

1 stop7h 51m

Lambert-St Louis

Mon 5/19

1:00 pm-4:32 pm

1 stop3h 32m

$190

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Sat 7/5

11:16 am-2:37 pm

1 stop4h 21m

Lambert-St Louis

Sat 8/9

6:00 am-11:20 am

1 stop4h 20m

$214

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Wed 5/21

5:40 pm-6:55 pm

Nonstop1h 15m

Lambert-St Louis

Tue 5/27

8:05 pm-9:10 pm

Nonstop1h 05m

$217

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Sat 5/24

11:47 am-1:07 pm

Nonstop1h 20m

Lambert-St Louis

Sun 5/25

7:30 am-8:49 am

Nonstop1h 19m

$218

South BendSt. Louis

SBN - STL

SBNSTL

South Bend/Michiana

Thu 7/17

6:15 am-9:41 am

1 stop4h 26m

Lambert-St Louis

Thu 7/24

6:40 am-1:34 pm

1 stop5h 54m

$219

IndianapolisSt. Louis

IND - STL

INDSTL

Indianapolis

Wed 5/28

11:17 am-2:35 pm

1 stop4h 18m

Lambert-St Louis

Wed 6/4

6:00 am-11:48 am

1 stop4h 48m

$223

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

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, August is the cheapest month in which you can book a flight from Indiana to St. Louis (average of $311). Flying from Indiana to St. Louis in March is currently the most expensive (average of $356). 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 May 1, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Indiana to St. Louis as you normally would.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated May 1, 2025.
See what other customers who have flown with Southwest, Delta and United Airlines from Indiana to St. Louis have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,294 reviews

Comfort

8.0

Food

7.1

Crew

8.6

Entertainment

7.6

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Southwest
8.0
Very good
4,294 reviews
Southwest
8.0
Very good
4,294 reviews

Comfort

8.0

Food

7.1

Crew

8.6

Entertainment

7.6

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Delta
8.0
Very good
7,934 reviews
Southwest
8.0
Very good
4,294 reviews

Comfort

8.0

Food

7.1

Crew

8.6

Entertainment

7.6

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
United Airlines
7.4
Good
8,696 reviews
Southwest
8.0
Very good
4,294 reviews

Comfort

8.0

Food

7.1

Crew

8.6

Entertainment

7.6

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,294 reviews

Comfort

8.0

Food

7.1

Crew

8.6

Entertainment

7.6

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

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.

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

    For one-way options, check prices for Southern / Mokulele. According to our data, you can fly for as low as $73. Users have also found prices from $81 and $109 on Frontier and Southwest, 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, August is the cheapest month in which you can book a flight from Indiana to St. Louis (average of $311). Flying from Indiana to St. Louis in March is currently the most expensive (average of $356). 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 Indiana?

Book flights to Indiana if you plan to visit one of these locations
Fenton
Maryland Heights
Fairview Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Glencoe
Alton
Farmington
O'Fallon

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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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$164Average$351FlexibilityNo cancel feeOn-time69%
DeltaCheapest$198Average$299FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$198Average$310FlexibilityNo cancel feeOn-time71%

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