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St. Louis

$51+ Cheap flights from Michigan 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 1/24. Fares are subject to change and may not be available on all flights or dates of travel.
DTW — STL
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Michigan to St. Louis

Keep the following information in mind while searching for Michigan to St. Louis flight deals. Data was last updated September 11, 2025.

Round-trip from

$101
(Southwest)

One-way from

$51
(Southwest)

Popular in

December

Cheapest in

July

Average price

$299

Good round-trip deal

$218 or less

Good one-way deal

$120 or less
From Michigan to Lambert-St Louis
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One-way flight from Michigan to Lambert-St Louis
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Highest demand for flights based on searches. 15% potential increase in price ($51 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Michigan to Lambert-St Louis.
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Price to beat on a one-way flight from Michigan to Lambert-St Louis.
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Find flight deals from Michigan to St. Louis

Cheapest flights from Michigan to St. Louis
Explore the most affordable flight options available from Michigan to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Southwest deal was found by Cheapflights users on 9/11. 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.
Wed 11/511:25 amMDW - STL
Nonstop1h 10mSouthwest
Sat 11/86:25 amSTL - MDW
Nonstop1h 10mSouthwest
Deal found 9/11$101
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/19:25 amORD - STL
Nonstop1h 24mUnited Airlines
Sat 10/48:00 amSTL - ORD
Nonstop1h 30mUnited Airlines
Deal found 9/11$101
This Southwest deal was found by Cheapflights users on 9/9. 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 10/113:50 pmMDW - STL
Nonstop1h 10mSouthwest
Mon 10/135:40 amSTL - MDW
Nonstop1h 10mSouthwest
Deal found 9/9$117
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Tue 10/2110:34 pmORD - STL
Nonstop1h 20mAmerican Airlines
Fri 10/246:00 amSTL - ORD
Nonstop1h 23mAmerican Airlines
Deal found 9/10$117
This American Airlines deal was found by Cheapflights users on 9/10. 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 10/48:00 amORD - STL
Nonstop1h 26mAmerican Airlines
Sun 10/56:05 amSTL - ORD
Nonstop1h 20mAmerican Airlines
Deal found 9/10$118
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 10/18:31 pmORD - STL
Nonstop1h 22mAmerican Airlines
Thu 10/26:05 amSTL - ORD
Nonstop1h 20mAmerican Airlines
Deal found 9/10$120
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/211:01 amORD - STL
Nonstop1h 27mUnited Airlines
Sun 10/59:20 amSTL - ORD
Nonstop1h 30mUnited Airlines
Deal found 9/11$133
This Southwest deal was found by Cheapflights users on 9/11. 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.
Wed 10/11:10 pmMDW - STL
Nonstop1h 15mSouthwest
Sat 10/45:55 pmSTL - MDW
Nonstop1h 10mSouthwest
Deal found 9/11$134
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/310:42 amORD - STL
1 stop22h 24mFrontier
Sat 10/47:55 pmSTL - ORD
1 stop13h 42mFrontier
Deal found 9/10$134
This eDestinos deal was found by Cheapflights users on 9/10. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/17:20 amORD - STL
1 stop25h 46mFrontier
Thu 10/27:55 pmSTL - ORD
1 stop28h 04mFrontier
Deal found 9/10$139
This Priceline deal was found by Cheapflights users on 9/10. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/256:20 amMDW - STL
1 stop8h 44mFrontier
Mon 9/294:00 pmSTL - MDW
1 stop7h 20mFrontier
Deal found 9/10$143
This Southwest deal was found by Cheapflights users on 9/8. 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 10/145:55 pmMDW - STL
Nonstop1h 15mSouthwest
Wed 10/155:05 pmSTL - MDW
Nonstop1h 05mSouthwest
Deal found 9/8$144

Cheapflights Fare Finder

 
Customize your flight search to find flights from Michigan 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 11, 2025.
Use the filters below to find and compare flights from Michigan to St. Louis that are best for you.

Fly from

Michigan

Fly to

St. Louis

Route

Depart

Return

Price

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 11/5

2:23 pm-3:49 pm

Nonstop1h 26m

Lambert-St Louis

Sat 11/8

5:24 pm-6:47 pm

Nonstop1h 23m

$101

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 10/1

1:03 pm-2:27 pm

Nonstop1h 24m

Lambert-St Louis

Sat 10/4

5:28 pm-6:53 pm

Nonstop1h 25m

$101

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Mon 11/3

6:20 am-7:35 am

Nonstop1h 15m

Lambert-St Louis

Wed 11/5

7:00 am-8:10 am

Nonstop1h 10m

$117

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 10/22

6:53 pm-8:26 pm

Nonstop1h 33m

Lambert-St Louis

Fri 10/24

6:00 am-7:23 am

Nonstop1h 23m

$117

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Sat 10/11

1:03 pm-2:27 pm

Nonstop1h 24m

Lambert-St Louis

Mon 10/13

5:28 pm-6:53 pm

Nonstop1h 25m

$117

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Fri 11/14

1:00 pm-2:25 pm

Nonstop1h 25m

Lambert-St Louis

Fri 11/14

6:43 pm-8:13 pm

Nonstop1h 30m

$133

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Wed 10/1

1:10 pm-2:25 pm

Nonstop1h 15m

Lambert-St Louis

Sat 10/4

5:55 pm-7:05 pm

Nonstop1h 10m

$134

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 10/2

1:10 pm-4:35 pm

1 stop3h 25m

Lambert-St Louis

Fri 10/3

9:20 am-4:19 pm

1 stop6h 59m

$150

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Fri 10/3

9:48 am-8:37 pm

1 stop10h 49m

Lambert-St Louis

Mon 10/6

4:00 pm-11:41 pm

1 stop7h 41m

$154

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Thu 10/2

7:40 am-8:50 am

Nonstop1h 10m

Lambert-St Louis

Mon 10/6

6:30 pm-7:40 pm

Nonstop1h 10m

$157

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 60 results
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Best time to book a flight from Michigan to St. Louis

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

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

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

Find hourly flight availability from Michigan 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 11, 2025.

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

Weekly flight availability from Michigan to St. Louis

Explore weekly flight availability from Michigan to St. Louis. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 11, 2025.

The most flights from USMI to STL are scheduled on a Monday (16 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).

Related info for your journey

Find useful and relevant information for your journey from Michigan 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 Michigan?

    For a flight from Michigan to St. Louis, you will be flying into Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city.

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

    There are many flights that can get you from Michigan to St. Louis in 1h 15m. Fly via United Airlines, Southwest, or American Airlines to get the fastest option. Airlines will cover a distance of 251 mi. Generally, flights for this route are nonstop.

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

    The cheapest airline one-way is Southwest, with whom users have recently found tickets for as low as $51. However, be on the lookout for offers from United Airlines and Frontier, as they are both options that can get you from Michigan to St. Louis for a low price.

  • What are the most popular routes from Michigan to St. Louis?

    The most popular route from Michigan to St. Louis is Chicago O'Hare Intl - Lambert-St Louis. You may also consider Detroit Metropolitan Wayne County - Lambert-St Louis or Marquette Sawyer Intl - Lambert-St Louis.

  • What are the most reliable airlines from Michigan to St. Louis?

    No one likes to see their flight delayed. When booking a flight from Michigan to St. Louis consider choosing SkyWest Airlines (100%), Aeromexico (89%) or Spirit Airlines (88%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Michigan to St. Louis?

    Looking for the cheapest flight from Michigan to St. Louis? While on average our users pay $222, our data indicates the cheapest price to be $42. The most popular route (Chicago O'Hare Intl - Lambert-St Louis), is priced around $101.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Michigan 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 Michigan to St. Louis?

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

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Top 5 airlines flying from Michigan to St. Louis

Discover the top 5 airlines that operate flights from Michigan 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 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$36Average$101FlexibilityNo cancel feeOn-time65%
DeltaCheapest$138Average$328FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$148Average$343FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$200Average$321FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$228Average$386FlexibilityNo cancel feeOn-time69%

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