HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$64+ 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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
DTW — STL
Jan 7 — Jan 141
Wed 1/7
Wed 1/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Michigan to St. Louis with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 December 8, 2025.

This Frontier deal was found by Cheapflights users on 12/6. 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.
Wed 12/313:10 pmMDW - STL
1 stop7h 23mFrontier
Thu 1/110:42 amSTL - MDW
1 stop11h 30mFrontier
Deal found 12/6$188
This American Airlines deal was found by Cheapflights users on 12/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3112:10 pmORD - STL
Nonstop1h 26mAmerican Airlines
Tue 1/136:00 amSTL - ORD
Nonstop1h 27mAmerican Airlines
Deal found 12/8$200
This Frontier deal was found by Cheapflights users on 12/6. 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.
Sun 12/2110:01 pmDTW - STL
1 stop13h 01mFrontier
Thu 12/2510:42 amSTL - DTW
1 stop6h 27mFrontier
Deal found 12/6$212
This Frontier deal was found by Cheapflights users on 12/6. 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.
Sun 12/2110:50 pmMDW - STL
1 stop11h 12mFrontier
Thu 12/2510:42 amSTL - MDW
1 stop11h 30mFrontier
Deal found 12/6$212
This Delta deal was found by Cheapflights users on 12/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:35 amORD - STL
1 stop4h 37mDelta
Tue 1/1312:00 pmSTL - ORD
1 stop4h 44mDelta
Deal found 12/8$213
This American Airlines deal was found by Cheapflights users on 12/6. 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 12/247:07 amORD - STL
Nonstop1h 28mAmerican Airlines
Thu 12/256:00 amSTL - ORD
Nonstop1h 30mAmerican Airlines
Deal found 12/6$215
This Frontier deal was found by Cheapflights users on 12/7. 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.
Sat 12/132:26 pmORD - STL
1 stop8h 07mFrontier
Mon 12/1510:47 amSTL - ORD
1 stop6h 40mFrontier
Deal found 12/7$234
This Delta deal was found by Cheapflights users on 12/6. 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 12/245:31 pmORD - STL
1 stop6h 07mDelta
Thu 12/256:29 amSTL - ORD
1 stop6h 25mDelta
Deal found 12/6$235
This Frontier deal was found by Cheapflights users on 12/6. 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.
Tue 12/303:10 pmMDW - STL
1 stop7h 23mFrontier
Thu 1/110:42 amSTL - MDW
1 stop11h 30mFrontier
Deal found 12/6$238
This Frontier deal was found by Cheapflights users on 12/7. 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.
Thu 12/119:53 pmORD - STL
1 stop13h 29mFrontier
Sun 12/1410:44 pmSTL - ORD
1 stop12h 58mFrontier
Deal found 12/7$238
This Mytrip deal was found by Cheapflights users on 12/5. 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.
Fri 12/122:26 pmORD - STL
1 stop8h 07mFrontier
Sat 12/133:30 pmSTL - ORD
1 stop22h 01mFrontier
Deal found 12/5$249
This Frontier deal was found by Cheapflights users on 12/6. 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.
Wed 12/3111:23 amORD - STL
1 stop11h 10mFrontier
Thu 1/110:42 amSTL - ORD
1 stop11h 42mFrontier
Deal found 12/6$258

Find 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 December 8, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$151
(Kiwi.com)

One-way from

$64
(Priceline)

Popular in

November

Cheapest in

August

Average price

$367

Good round-trip deal

$339 or less

Good one-way deal

$251 or less
Provider with most accurate pricing for Detroit (DTT)-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Detroit (DTT)-Lambert-St Louis flights.
Search Deals
From Michigan to Lambert-St Louis
Search Deals
One-way flight from Michigan to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($74 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Michigan to Lambert-St Louis.
Search Deals
Price to beat on a one-way flight from Michigan to Lambert-St Louis.
Search Deals

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 December 8, 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

Fri 1/23

11:45 am-11:33 pm

1 stop11h 48m

Lambert-St Louis

Sun 1/25

5:42 pm-10:41 am

1 stop16h 59m

$152

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Thu 1/8

6:10 am-2:48 pm

1 stop8h 38m

Lambert-St Louis

Mon 1/12

5:11 pm-10:34 am

2 stops17h 23m

$168

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Thu 1/8

9:55 am-11:15 am

Nonstop1h 20m

Lambert-St Louis

Mon 1/12

5:55 pm-7:05 pm

Nonstop1h 10m

$171

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Sat 1/17

10:52 am-12:29 pm

Nonstop1h 37m

Lambert-St Louis

Tue 1/20

9:57 am-11:32 am

Nonstop1h 35m

$171

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 1/8

9:25 pm-10:58 pm

Nonstop1h 33m

Lambert-St Louis

Mon 1/12

4:49 pm-6:32 pm

Nonstop1h 43m

$171

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Thu 1/22

10:48 am-5:50 pm

1 stop7h 02m

Lambert-St Louis

Thu 1/29

6:10 am-1:09 pm

1 stop6h 59m

$191

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 1/22

5:30 am-11:04 am

1 stop5h 34m

Lambert-St Louis

Thu 1/29

7:10 am-1:39 pm

1 stop6h 29m

$191

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Fri 3/6

10:13 pm-10:02 am

1 stop12h 49m

Lambert-St Louis

Mon 3/9

7:43 pm-11:25 am

1 stop14h 42m

$209

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Fri 1/9

5:50 am-2:48 pm

1 stop8h 58m

Lambert-St Louis

Sun 1/11

5:11 pm-2:57 pm

2 stops21h 46m

$209

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 12/31

6:35 am-11:12 am

1 stop4h 37m

Lambert-St Louis

Tue 1/13

12:00 pm-4:44 pm

1 stop4h 44m

$213

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/7

Showing 1-10 of 60 results
1
2
3
...
6

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 $39). 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 December 8, 2025.

It’s typically best to fly out from Michigan to St. Louis in the evening. Doing so could potentially save you 28% 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 December 8, 2025.

The most flights from USMI to STL are scheduled on a Friday (17 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (10 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 20m. Fly via Frontier, Southwest, or United Airlines to get the fastest option. Airlines will cover a distance of 251 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 Spirit Airlines, with whom users have recently found tickets for as low as $36. However, be on the lookout for offers from Delta and Southwest, 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 Virgin Atlantic (77%), KLM (75%) or Korean Air (72%) 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 $343, our data indicates the cheapest price to be $144. 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 $39). 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
Swansea
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Michigan to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
LaGuardia to St. Louis flights
John F Kennedy Intl to Kansas City flights
Newark to St. Louis flights
LaGuardia to Kansas City flights
Denver to St. Louis flights
John F Kennedy Intl to St. Louis flights
Dallas/Fort Worth to St. Louis flights
Hobby to Kansas City flights
Dulles Intl to Kansas City flights
Los Angeles to Kansas City flights
Los Angeles to St. Louis flights
O'Hare Intl to Kansas City flights
Dulles Intl to St. Louis flights
Denver to Kansas City flights
George Bush Intcntl to Kansas City flights
San Francisco to Kansas City flights
Newark to Kansas City flights
Atlanta to Kansas City flights
Dallas/Fort Worth to Kansas City flights
Baltimore to Kansas City flights
San Francisco to St. Louis flights
Boston to Kansas City flights
Boston to St. Louis flights
Sky Harbor Intl to St. Louis flights
Minneapolis to Kansas City flights
Sky Harbor Intl to Kansas City flights
Baltimore to St. Louis flights
Reagan-National to St. Louis flights
Detroit to St. Louis flights
Atlanta to St. Louis flights
Orlando to Kansas City flights
Raleigh to Kansas City flights
Reagan-National to Kansas City flights
Philadelphia to St. Louis flights
Seattle to St. Louis flights
Miami to Kansas City flights
O'Hare Intl to St. Louis flights
Philadelphia to Kansas City flights
Minneapolis to St. Louis flights
Love Field to Kansas City flights
San Diego to St. Louis flights
Orlando to St. Louis flights
Midway to Kansas City flights
Seattle to Kansas City flights
Detroit to Kansas City flights
Ontario to Kansas City flights
Salt Lake City to Kansas City flights
San Diego to Kansas City flights
Hobby to St. Louis flights
Austin to St. Louis flights

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 December 8, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$36Average$101FlexibilityNo cancel feeOn-time65%
FrontierCheapest$111Average$229FlexibilityNo cancel feeOn-time62%
DeltaCheapest$136Average$338FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$137Average$344FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$200Average$322FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$228Average$364FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.