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St. Louis

$55+ 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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
IND — STL
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from Indiana to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Indiana (USIN) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2025.

Round-trip from

$125
(Mytrip)

One-way from

$55
(Frontier)
From Indiana to Lambert-St Louis
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One-way flight from Indiana to Lambert-St Louis
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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 January 21, 2025.

This Mytrip deal was found by Cheapflights users on 1/21. 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.
Thu 2/138:25 amORD - STL
1 stop11h 45mSouthern / Mokulele
Mon 2/1712:15 pmSTL - ORD
1 stop19h 25mSouthern / Mokulele
Deal found 1/21$125
This Southwest deal was found by Cheapflights users on 1/21. 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.
Thu 2/135:25 amMDW - STL
Nonstop1h 20mSouthwest
Mon 2/176:00 amSTL - MDW
Nonstop1h 10mSouthwest
Deal found 1/21$137
This United Airlines deal was found by Cheapflights users on 1/21. 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 3/51:15 pmORD - STL
Nonstop1h 21mUnited Airlines
Thu 3/205:33 pmSTL - ORD
Nonstop1h 22mUnited Airlines
Deal found 1/21$137
This CheapOair deal was found by Cheapflights users on 1/21. 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.
Wed 2/268:20 pmORD - STL
1 stop15h 25mMultiple Airlines
Sat 3/18:52 pmSTL - ORD
1 stop8h 13mMultiple Airlines
Deal found 1/21$138
This American Airlines deal was found by Cheapflights users on 1/21. 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.
Thu 2/139:55 amORD - STL
Nonstop1h 30mAmerican Airlines
Mon 2/175:45 amSTL - ORD
Nonstop1h 21mAmerican Airlines
Deal found 1/21$139
This Booking.com deal was found by Cheapflights users on 1/20. 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.
Sat 2/153:07 pmCVG - STL
1 stop9h 36mFrontier
Tue 2/255:20 pmSTL - CVG
1 stop24h 01mFrontier
Deal found 1/20$140
This Frontier deal was found by Cheapflights users on 1/21. 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.
Fri 2/73:37 pmMDW - STL
1 stop7h 54mFrontier
Sun 2/98:31 pmSTL - MDW
1 stop15h 13mFrontier
Deal found 1/21$150
This CheapOair deal was found by Cheapflights users on 1/20. 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.
Sun 2/910:59 amORD - STL
1 stop12h 32mFrontier
Wed 2/267:04 pmSTL - ORD
1 stop18h 21mFrontier
Deal found 1/20$150
This Southwest deal was found by Cheapflights users on 1/21. 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.
Tue 2/2511:25 amORD - STL
1 stop4h 25mSouthwest
Thu 2/275:20 amSTL - ORD
2 stops8h 40mSouthwest
Deal found 1/21$162
This Delta deal was found by Cheapflights users on 1/21. 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 2/1310:19 amMDW - STL
1 stop4h 31mDelta
Mon 2/176:43 amSTL - MDW
1 stop6h 22mDelta
Deal found 1/21$177
This Delta deal was found by Cheapflights users on 1/21. 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 2/139:35 amORD - STL
1 stop5h 59mDelta
Mon 2/173:35 pmSTL - ORD
1 stop6h 23mDelta
Deal found 1/21$177
This CheapOair deal was found by Cheapflights users on 1/20. 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.
Tue 2/256:45 amIND - STL
1 stop8h 57mSpirit Airlines
Thu 2/274:00 pmSTL - IND
1 stop6h 55mSpirit Airlines
Deal found 1/20$224

Find flights from Indiana to St. Louis within your budget

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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Wed 2/26

12:25 pm-11:43 pm

1 stop12h 18m

Lambert-St Louis

Tue 3/4

6:26 pm-5:14 am

1 stop9h 48m

$118

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 2/13

8:25 am-8:10 pm

1 stop11h 45m

Lambert-St Louis

Mon 2/17

12:15 pm-7:40 am

1 stop19h 25m

$125

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Thu 2/13

5:25 am-6:45 am

Nonstop1h 20m

Lambert-St Louis

Mon 2/17

6:00 am-7:10 am

Nonstop1h 10m

$137

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Tue 2/18

9:55 am-11:21 am

Nonstop1h 26m

Lambert-St Louis

Tue 2/18

6:00 pm-7:26 pm

Nonstop1h 26m

$137

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 2/26

8:20 pm-11:45 am

1 stop15h 25m

Lambert-St Louis

Sat 3/1

8:52 pm-5:05 am

1 stop8h 13m

$138

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Fri 2/7

3:37 pm-11:31 pm

1 stop7h 54m

Lambert-St Louis

Sun 2/9

8:31 pm-11:44 am

1 stop15h 13m

$150

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Sun 2/9

10:59 am-11:31 pm

1 stop12h 32m

Lambert-St Louis

Wed 2/26

7:04 pm-1:25 pm

1 stop18h 21m

$150

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Tue 2/25

11:25 am-3:50 pm

1 stop4h 25m

Lambert-St Louis

Thu 2/27

5:20 am-2:00 pm

2 stops8h 40m

$162

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Thu 2/13

10:19 am-2:50 pm

1 stop4h 31m

Lambert-St Louis

Mon 2/17

6:43 am-1:05 pm

1 stop6h 22m

$177

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 2/13

9:35 am-3:34 pm

1 stop5h 59m

Lambert-St Louis

Mon 2/17

3:35 pm-9:58 pm

1 stop6h 23m

$177

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 58 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.

Travel insights for flights from Indiana to St. Louis

Get recent, data-driven insights about flights from Indiana to St. Louis including ideal travel times, pricing trends, and more.

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 January 21, 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 January 21, 2025.
See what other customers who have flown with United Airlines, Frontier and Southwest 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
8.1
Very good
4,662 reviews

Comfort

8.1

Boarding

8.2

Crew

8.7

Entertainment

7.7

Overall

8.1

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,662 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Boarding

8.2

Crew

8.7

Entertainment

7.7

Overall

8.1

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,706 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Boarding

8.2

Crew

8.7

Entertainment

7.7

Overall

8.1

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,521 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Boarding

8.2

Crew

8.7

Entertainment

7.7

Overall

8.1

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,985 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Boarding

8.2

Crew

8.7

Entertainment

7.7

Overall

8.1

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Boarding

8.2

Crew

8.7

Entertainment

7.7

Overall

8.1

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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 Frontier. According to our data, you can fly for as low as $55. Users have also found prices from $67 and $69 on Southern / Mokulele 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 Dayton - 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
Fairview Heights
Maryland Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Alton
Farmington
Chesterfield

Browse thousands of different options on Cheapflights for your next trip

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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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$164Average$363FlexibilityNo cancel feeOn-time69%
DeltaCheapest$217Average$307FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$221Average$312FlexibilityNo cancel feeOn-time71%
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