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St. Louis

$159+ Cheap flights from South Bend to St. Louis (SBN - 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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
SBN — STL
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from South Bend to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from South Bend (SBN) 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 September 16, 2025.

Round-trip from

$219
(United Airlines)

One-way from

$159
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$389
From South Bend/Michiana to Lambert-St Louis
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One-way flight from South Bend/Michiana to Lambert-St Louis
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Highest demand for flights based on searches. 13% potential increase in price ($50 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from South Bend to St. Louis

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

This United Airlines deal was found by Cheapflights users on 9/15. 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.
Wed 10/156:05 amSBN - STL
1 stop5h 44mUnited Airlines
Wed 10/225:00 amSTL - SBN
1 stop4h 56mUnited Airlines
Deal found 9/15$219
This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/158:24 amSBN - STL
1 stop5h 58mDelta
Wed 10/226:00 amSTL - SBN
2 stops6h 36mDelta
Deal found 9/15$224
This United Airlines deal was found by Cheapflights users on 9/16. 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 10/17:40 amSBN - STL
1 stop4h 09mUnited Airlines
Sun 10/56:30 amSTL - SBN
1 stop3h 42mUnited Airlines
Deal found 9/16$229
This Delta deal was found by Cheapflights users on 9/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/18:25 amSBN - STL
2 stops7h 10mDelta
Sun 10/56:40 amSTL - SBN
1 stop5h 51mDelta
Deal found 9/16$279
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Thu 11/2011:57 amSBN - STL
1 stop4h 49mUnited Airlines
Sun 11/236:30 amSTL - SBN
1 stop3h 43mUnited Airlines
Deal found 9/15$333
This United Airlines deal was found by Cheapflights users on 9/14. 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 11/2611:57 amSBN - STL
1 stop4h 49mUnited Airlines
Sat 11/295:24 pmSTL - SBN
1 stop5h 01mUnited Airlines
Deal found 9/14$357
This Delta deal was found by Cheapflights users on 9/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/104:06 pmSBN - STL
2 stops8h 35mDelta
Mon 10/135:31 pmSTL - SBN
1 stop3h 58mDelta
Deal found 9/16$423
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Fri 10/2411:37 amSBN - STL
1 stop5h 07mUnited Airlines
Sun 10/266:43 pmSTL - SBN
1 stop15h 10mUnited Airlines
Deal found 9/15$541
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/262:31 pmSBN - STL
1 stop3h 38mDelta
Sat 11/296:00 amSTL - SBN
2 stops6h 51mDelta
Deal found 9/14$544
This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/248:24 amSBN - STL
2 stops7h 19mDelta
Sun 10/262:15 pmSTL - SBN
1 stop5h 34mDelta
Deal found 9/15$554

Cheapflights Fare Finder

 
Customize your flight search to find flights from South Bend 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 September 16, 2025.
Use the filters below to find and compare flights from South Bend to St. Louis that are best for you.

Fly from

South Bend

Fly to

St. Louis

Route

Depart

Return

Price

South BendSt. Louis

SBN - STL

SBNSTL

South Bend/Michiana

Wed 10/15

6:05 am-10:49 am

1 stop5h 44m

Lambert-St Louis

Wed 10/22

5:00 am-10:56 am

1 stop4h 56m

$219

South BendSt. Louis

SBN - STL

SBNSTL

South Bend/Michiana

Fri 10/10

6:05 am-10:49 am

1 stop5h 44m

Lambert-St Louis

Mon 10/13

9:20 am-2:46 pm

1 stop4h 26m

$219

South BendSt. Louis

SBN - STL

SBNSTL

South Bend/Michiana

Sat 2/21

2:30 pm-11:40 pm

2 stops10h 10m

Lambert-St Louis

Tue 2/24

6:00 am-11:37 am

1 stop4h 37m

$224

South BendSt. Louis

SBN - STL

SBNSTL

South Bend/Michiana

Wed 10/15

8:24 am-1:22 pm

1 stop5h 58m

Lambert-St Louis

Wed 10/22

6:00 am-1:36 pm

2 stops6h 36m

$224

South BendSt. Louis

SBN - STL

SBNSTL

South Bend/Michiana

Wed 10/1

7:40 am-10:49 am

1 stop4h 09m

Lambert-St Louis

Sun 10/5

6:30 am-11:12 am

1 stop3h 42m

$229

South BendSt. Louis

SBN - STL

SBNSTL

South Bend/Michiana

Mon 9/22

3:06 pm-9:06 am

2 stops19h 00m

$159

South BendSt. Louis

SBN - STL

SBNSTL

South Bend/Michiana

Mon 9/22

3:59 pm-9:32 pm

1 stop6h 33m

$304

South BendSt. Louis

SBN - STL

SBNSTL

South Bend/Michiana

Wed 9/24

7:20 am-11:30 am

1 stop5h 10m

$304

South BendSt. Louis

SBN - STL

SBNSTL

South Bend/Michiana

Wed 9/24

3:59 pm-6:23 pm

1 stop3h 24m

$304

South BendSt. Louis

SBN - STL

SBNSTL

South Bend/Michiana

Wed 9/24

3:13 pm-9:06 am

3 stops42h 53m

$333

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Best time to book a flight from South Bend to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from South Bend 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 South Bend to St. Louis

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

Currently, August is the cheapest month in which you can book a flight from South Bend to St. Louis (average of $311). Flying from South Bend 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 SBN to STL?

Find hourly flight availability from South Bend 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 September 16, 2025.

One of the essential ways to save on airfare from South Bend to St. Louis is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 32% on airfare.

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 September 16, 2025.
See what other customers who have flown with Delta and United Airlines from South Bend to St. Louis have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,957 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,957 reviews
Delta
8.0
Very good
7,957 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,924 reviews
Delta
8.0
Very good
7,957 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

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

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

    United Airlines and Delta can get you from South Bend to St. Louis in just under 5h 44m. Your travel time can differ by up to 4h 26m. The distance from South Bend to St. Louis is about 295 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from South Bend to St. Louis round-trip?

    According to our current data, Delta ($218), and United Airlines ($238) offers the cheapest pricing from South Bend to St. Louis. Delta is currently priced 30% below the average price you’ll pay for this route.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from South Bend 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 South Bend to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from South Bend to St. Louis (average of $311). Flying from South Bend 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 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for South Bend to St. Louis

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Top 2 airlines flying from South Bend to St. Louis

Discover the top 2 airlines that operate flights from South Bend 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$218Average$258FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$238Average$354FlexibilityNo cancel feeOn-time69%

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