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St. Louis

$49+ 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 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
DTW — STL
Nov 13 — Nov 201
Thu 11/13
Thu 11/20
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 October 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$107
(Southwest)

One-way from

$49
(Southwest)

Popular in

October

Cheapest in

August

Average price

$397

Good round-trip deal

$293 or less

Good one-way deal

$170 or less
Provider with most accurate pricing for Detroit (DTT)-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Detroit (DTT)-Lambert-St Louis flights.
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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. 13% potential increase in price ($43 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 14, 2025.

This Southwest deal was found by Cheapflights users on 10/13. 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 11/125:00 amMDW - STL
1 stop5h 10mSouthwest
Wed 11/194:25 pmSTL - MDW
Nonstop1h 10mSouthwest
Deal found 10/13$107
This Southwest deal was found by Cheapflights users on 10/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/208:10 amMDW - STL
1 stop4h 50mSouthwest
Mon 11/245:05 pmSTL - MDW
1 stop5h 55mSouthwest
Deal found 10/14$114
This Southwest deal was found by Cheapflights users on 10/13. 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 11/122:15 pmORD - STL
1 stop5h 45mSouthwest
Wed 11/198:05 amSTL - ORD
1 stop4h 55mSouthwest
Deal found 10/13$117
This Southwest deal was found by Cheapflights users on 10/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/111:45 pmORD - STL
1 stop8h 25mSouthwest
Tue 11/188:25 amSTL - ORD
1 stop3h 50mSouthwest
Deal found 10/14$122
This American Airlines deal was found by Cheapflights users on 10/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/206:44 amORD - STL
Nonstop1h 25mAmerican Airlines
Mon 11/248:39 amSTL - ORD
Nonstop1h 38mAmerican Airlines
Deal found 10/14$132
This United Airlines deal was found by Cheapflights users on 10/14. 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 12/39:23 pmORD - STL
Nonstop1h 22mUnited Airlines
Sat 12/65:27 pmSTL - ORD
Nonstop1h 23mUnited Airlines
Deal found 10/14$134
This Southwest deal was found by Cheapflights users on 10/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/243:45 pmMDW - STL
1 stop3h 40mSouthwest
Sat 1/1010:25 amSTL - MDW
Nonstop1h 10mSouthwest
Deal found 10/14$141
This Southwest deal was found by Cheapflights users on 10/11. 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.
Fri 10/319:00 amMDW - STL
Nonstop1h 10mSouthwest
Sat 11/15:55 pmSTL - MDW
Nonstop1h 10mSouthwest
Deal found 10/11$164
This United Airlines deal was found by Cheapflights users on 10/11. 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.
Fri 10/314:10 pmORD - STL
Nonstop1h 29mUnited Airlines
Sat 11/112:31 pmSTL - ORD
Nonstop1h 29mUnited Airlines
Deal found 10/11$164
This Trip.com deal was found by Cheapflights users on 10/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/227:15 amORD - STL
1 stop25h 52mFrontier
Wed 10/298:40 pmSTL - ORD
1 stop28h 03mFrontier
Deal found 10/13$165
This Frontier deal was found by Cheapflights users on 10/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/76:15 amMDW - STL
1 stop9h 46mFrontier
Sun 11/911:23 amSTL - MDW
1 stop10h 40mFrontier
Deal found 10/14$166
This Kiwi.com deal was found by Cheapflights users on 10/12. 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 12/122:45 pmMDW - STL
1 stop19h 17mFrontier
Sun 12/146:26 pmSTL - MDW
1 stop15h 26mFrontier
Deal found 10/12$169

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 October 14, 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

MDW - STL

MDWSTL

Chicago Midway

Wed 11/12

5:00 am-10:10 am

1 stop5h 10m

Lambert-St Louis

Wed 11/19

4:25 pm-5:35 pm

Nonstop1h 10m

$107

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Thu 11/20

9:50 am-1:00 pm

1 stop3h 10m

Lambert-St Louis

Mon 11/24

3:45 pm-7:45 pm

1 stop4h 00m

$114

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 11/12

2:15 pm-8:00 pm

1 stop5h 45m

Lambert-St Louis

Wed 11/19

8:05 am-1:00 pm

1 stop4h 55m

$117

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Wed 12/24

10:15 am-4:25 pm

1 stop6h 10m

Lambert-St Louis

Sat 1/10

8:45 am-4:55 pm

2 stops8h 10m

$156

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Fri 10/31

4:10 pm-5:39 pm

Nonstop1h 29m

Lambert-St Louis

Sat 11/1

12:31 pm-2:00 pm

Nonstop1h 29m

$164

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Fri 10/31

9:00 am-10:10 am

Nonstop1h 10m

Lambert-St Louis

Sat 11/1

5:55 pm-7:05 pm

Nonstop1h 10m

$164

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Tue 11/11

11:25 am-12:35 pm

Nonstop1h 10m

Lambert-St Louis

Tue 11/11

4:25 pm-5:35 pm

Nonstop1h 10m

$164

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Tue 11/11

12:59 pm-2:24 pm

Nonstop1h 25m

Lambert-St Louis

Thu 11/13

10:00 am-11:29 am

Nonstop1h 29m

$171

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Tue 12/2

9:23 pm-10:45 pm

Nonstop1h 22m

Lambert-St Louis

Sat 12/6

6:42 pm-8:12 pm

Nonstop1h 30m

$171

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Sat 11/8

9:20 am-10:51 am

Nonstop1h 31m

Lambert-St Louis

Sat 11/8

3:14 pm-4:44 pm

Nonstop1h 30m

$171

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/14

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 $40). Flying from Michigan to St. Louis in April is currently the most expensive (average of $231). 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 October 14, 2025.

It’s typically best to fly out from Michigan to St. Louis in the evening. Doing so could potentially save you 27% on the flight price compared to flying in the afternoon, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from Michigan to St. Louis. Price data was last updated on December 16, 2024.

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

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 October 14, 2025.

The most flights from USMI to STL are scheduled on a Monday (17 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (1 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 29m. Fly via Southwest, United Airlines, or Delta to get the fastest option. Airlines will cover a distance of 258 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $49. However, be on the lookout for offers from United Airlines and American Airlines, 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 Chicago Midway - 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%), Air France (97%) or Southwest (97%) 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 $301, our data indicates the cheapest price to be $125. The most popular route (Chicago O'Hare Intl - Lambert-St Louis), is priced around $171.

  • 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 $40). Flying from Michigan to St. Louis in April is currently the most expensive (average of $231). 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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Alternative routes for Michigan to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Michigan to St. Louis

Discover the top 6 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 October 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$36Average$101FlexibilityNo cancel feeOn-time65%
FrontierCheapest$111Average$262FlexibilityNo cancel feeOn-time62%
DeltaCheapest$138Average$337FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$148Average$348FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$200Average$322FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$228Average$386FlexibilityNo cancel feeOn-time69%

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