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

According to our current data, United Airlines ($240), and Delta ($423) offers the cheapest pricing from South Bend to St. Louis. United Airlines is currently priced 23% below the average price you’ll pay for this route.

What is the cheapest day to fly from South Bend to St. Louis?

Travelers seeking maximum savings on their South Bend to St. Louis flight should consider departing on Friday mornings when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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.

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).

What is the cheapest day to fly round-trip from South Bend to St. Louis?

Flights from South Bend to St. Louis are found to be more expensive on Monday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to St. Louis.

What is the cheapest month to fly from South Bend to St. Louis?

January is one of the best times of the year to fly to St. Louis from South Bend. Prices for January average $312 per person but you can even find prices for as low as $238. The most expensive prices can be found in the month of March. Opting for a January flight can save you 44% on your journey compared to booking in March

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.

$200+ Flights from South Bend to St. Louis

Q: How much does it cost to fly round-trip from South Bend to St. Louis?

Airfare is below average for this route at the moment. South Bend to St. Louis flights typically cost between $248 and $423 in December. The cheapest round-trip price found within the last 3 days was $240 on United Airlines (Dec 20-Dec 27).

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Cheap flight deals from South Bend to St. Louis

Round-trip from	$240 (United Airlines)
One-way from	$200 (Delta)
Popular in	March
Cheapest in	January
Average price	$278

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. 14% potential increase in price ($54 potential increase over avg. RT price).

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Cheapest flight prices on average. 4% potential price decrease ($13 potential savings vs. average RT price).

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Average for round-trip flights in August 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 August 2, 2025.

Sat 12/207:50 pmSBN - STL

1 stop3h 53mUnited Airlines

Sat 12/276:35 pmSTL - SBN

1 stop3h 50mUnited Airlines

Deal found 8/1

$240

Fri 8/111:44 amSBN - STL

1 stop5h 34mDelta

Fri 8/82:15 pmSTL - SBN

1 stop5h 29mDelta

Deal found 7/31

$249

Sun 8/1710:33 pmSBN - STL

3 stops38h 37mMultiple Airlines

Thu 8/212:30 pmSTL - SBN

3 stops27h 30mMultiple Airlines

Deal found 8/2

$660

Best flights from South Bend to St. Louis
Discover carefully curated flight deals from South Bend to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 2, 2025.

Sat 12/207:50 pmSBN - STL

1 stop3h 53mUnited Airlines

Sat 12/276:35 pmSTL - SBN

1 stop3h 50mUnited Airlines

Deal found 8/1

$240

Sat 8/162:15 pmSBN - STL

1 stop3h 20mDelta

Wed 8/206:40 amSTL - SBN

1 stop5h 50mDelta

Deal found 7/31

$423

Sun 8/1710:33 pmSBN - STL

3 stops38h 37mMultiple Airlines

Thu 8/212:30 pmSTL - SBN

3 stops27h 30mMultiple Airlines

Deal found 8/2

$660

Last-minute flights from South Bend to St. Louis
Discover last-minute flight deals from South Bend to St. Louis. Data last updated August 2, 2025 and is based on user searches.

Thu 7/311:09 pmSBN - STL

1 stop3h 38mUnited Airlines

Tue 8/55:31 pmSTL - SBN

1 stop4h 59mUnited Airlines

Deal found 7/31

$403

Fri 8/111:44 amSBN - STL

1 stop5h 34mDelta

Fri 8/82:15 pmSTL - SBN

1 stop5h 29mDelta

Deal found 7/31

$249

Thu 8/78:30 amSBN - STL

1 stop5h 51mDelta

Fri 8/86:04 pmSTL - SBN

1 stop18h 30mDelta

Deal found 7/31

$583

Sun 8/1710:33 pmSBN - STL

3 stops38h 37mMultiple Airlines

Thu 8/212:30 pmSTL - SBN

3 stops27h 30mMultiple Airlines

Deal found 8/2

$660

One-way flights from South Bend to St. Louis
Search for one-way flight options from South Bend to St. Louis. Find affordable one-way fares based on user searches. Data last updated August 2, 2025.

Sat 10/116:14 amSBN - STL

1 stop7h 21mDelta

Deal found 8/2

$200

Cheapflights Fare Finder

Use the filters below to find and compare flights from South Bend to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

South BendSt. Louis

SBN - STL

SBNSTL

South Bend/Michiana

Sat 12/20

7:50 pm-10:43 pm

1 stop3h 53m

Lambert-St Louis

Sat 12/27

6:35 pm-11:25 pm

1 stop3h 50m

$240

South BendSt. Louis

SBN - STL

SBNSTL

South Bend/Michiana

Sat 8/16

2:15 pm-4:35 pm

1 stop3h 20m

Lambert-St Louis

Wed 8/20

6:40 am-1:30 pm

1 stop5h 50m

$423

South BendSt. Louis

SBN - STL

SBNSTL

South Bend/Michiana

Sun 8/17

10:33 pm-12:10 pm

3 stops38h 37m

Lambert-St Louis

Thu 8/21

2:30 pm-7:00 pm

3 stops27h 30m

$660

South BendSt. Louis

SBN - STL

SBNSTL

South Bend/Michiana

Sat 10/11

6:14 am-12:35 pm

1 stop7h 21m

$200

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/2

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?

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.

How much does it cost to fly round-trip from South Bend to St. Louis?

Reviews of airlines servicing St. Louis

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

7,985 reviews

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

7,985 reviews

Delta

8.0

Very good

7,985 reviews

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

8,905 reviews

Delta

8.0

Very good

7,985 reviews

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

What are the cheapest airlines flying from South Bend to St. Louis round-trip?
According to our current data, United Airlines ($240), and Delta ($423) offers the cheapest pricing from South Bend to St. Louis. United Airlines is currently priced 23% 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

O'Fallon

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Eureka

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Glencoe

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Chesterfield

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Farmington

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Top 2 airlines flying from South Bend to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$218	Average$258	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$238	Average$364	FlexibilityNo cancel fee	On-time69%

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$200+ 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 10/11. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from South Bend to St. Louis with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from South Bend to St. Louis

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from South Bend to St. Louis

Cheapest flights from South Bend to St. LouisExplore 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 August 2, 2025.

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 August 2, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from South Bend to St. Louis that are best for you.

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.

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?

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 August 2, 2025.

How much does it cost to fly round-trip from South Bend to St. Louis?

Reviews of airlines servicing St. Louis

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.

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.

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

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

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

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

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

Traveling to a place near St. Louis?

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Alternative routes for South Bend to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from South Bend to St. Louis

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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 August 2, 2025.