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

$59+ 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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
DTW — STL
Apr 22 — Apr 291
Wed 4/22
Wed 4/29
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 March 23, 2026.

This Expedia deal was found by Cheapflights users on 3/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1311:48 am
DTW
-
STL
1 stop12h 37m
Frontier
Thu 4/1611:25 am
STL
-
DTW
1 stop6h 21m
Frontier
Deal found 3/21$140
This Kiwi.com deal was found by Cheapflights users on 3/19. 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.
Tue 4/2812:33 pm
DTW
-
STL
1 stop19h 17m
Frontier
Wed 4/298:23 pm
STL
-
DTW
1 stop11h 42m
Frontier
Deal found 3/19$145
This Kiwi.com deal was found by Cheapflights users on 3/21. 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.
Tue 4/217:04 pm
DTW
-
STL
1 stop12h 46m
Frontier
Thu 4/2311:25 am
STL
-
DTW
1 stop6h 21m
Frontier
Deal found 3/21$154
This Priceline deal was found by Cheapflights users on 3/22. 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.
Wed 4/81:08 pm
DTW
-
STL
1 stop11h 17m
Frontier
Thu 4/1611:25 am
STL
-
DTW
1 stop6h 21m
Frontier
Deal found 3/22$160
This Kiwi.com deal was found by Cheapflights users on 3/20. 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.
Thu 4/168:43 pm
DTW
-
STL
1 stop11h 07m
Frontier
Mon 4/208:23 pm
STL
-
DTW
1 stop14h 15m
Frontier
Deal found 3/20$171
This Travelocity deal was found by Cheapflights users on 3/20. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/143:50 pm
DTW
-
STL
1 stop8h 29m
Frontier
Wed 4/158:23 pm
STL
-
DTW
1 stop11h 42m
Frontier
Deal found 3/20$181
This Frontier deal was found by Cheapflights users on 3/18. 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 4/248:48 pm
GRR
-
STL
1 stop23h 44m
Frontier
Sun 4/264:59 pm
STL
-
GRR
1 stop23h 29m
Frontier
Deal found 3/18$182
This Kiwi.com deal was found by Cheapflights users on 3/20. 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.
Thu 4/911:07 am
DTW
-
STL
1 stop7h 27m
Multiple Airlines
Mon 4/138:19 pm
STL
-
DTW
2 stops13h 53m
Multiple Airlines
Deal found 3/20$186
This Trip.com deal was found by Cheapflights users on 3/21. 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.
Sat 4/45:19 pm
DTW
-
STL
1 stop7h 06m
Frontier
Wed 4/88:16 pm
STL
-
DTW
1 stop13h 42m
Frontier
Deal found 3/21$190
This Frontier deal was found by Cheapflights users on 3/20. 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.
Mon 3/236:00 am
DTW
-
STL
1 stop12h 01m
Frontier
Thu 4/1611:25 am
STL
-
DTW
1 stop6h 21m
Frontier
Deal found 3/20$195
This Southwest deal was found by Cheapflights users on 3/20. 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 4/147:10 pm
DTW
-
STL
Nonstop1h 45m
Southwest
Wed 4/1510:30 am
STL
-
DTW
Nonstop1h 30m
Southwest
Deal found 3/20$197
This Kiwi.com deal was found by Cheapflights users on 3/19. 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.
Sun 4/269:50 am
DTW
-
STL
1 stop22h 00m
Frontier
Mon 4/278:23 pm
STL
-
DTW
1 stop14h 15m
Frontier
Deal found 3/19$199

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 March 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$134
(Kiwi.com)

One-way from

$59
(Southwest)

Popular in

February

Cheapest in

August

Average price

$339

Good round-trip deal

$339 or less

Good one-way deal

$202 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. 20% potential increase in price ($68 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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 March 23, 2026.
Use the filters below to find and compare flights from Michigan to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Mon 4/13

8:02 pm-8:44 pm

Nonstop1h 42m

Lambert-St Louis

Thu 4/23

6:48 am-9:17 am

Nonstop1h 29m

$213

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Wed 4/8

8:15 am-3:15 pm

2 stops8h 00m

Lambert-St Louis

Mon 4/13

7:40 pm-10:10 pm

Nonstop1h 30m

$220

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Sun 5/3

5:15 am-11:05 am

1 stop5h 50m

Lambert-St Louis

Tue 5/12

8:45 pm-9:50 pm

Nonstop1h 05m

$237

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Fri 5/29

3:25 pm-8:50 pm

1 stop5h 25m

Lambert-St Louis

Tue 6/2

1:15 pm-7:35 pm

2 stops6h 20m

$248

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 4/9

8:20 pm-9:52 pm

Nonstop1h 32m

Lambert-St Louis

Mon 4/13

8:21 am-9:50 am

Nonstop1h 29m

$253
Quickest round-trip

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Mon 4/13

9:30 pm-10:45 pm

Nonstop1h 15m

Lambert-St Louis

Fri 4/17

1:45 pm-2:55 pm

Nonstop1h 10m

$264

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Wed 4/22

7:10 pm-7:55 pm

Nonstop1h 45m

Lambert-St Louis

Fri 4/24

7:40 pm-10:10 pm

Nonstop1h 30m

$268

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Sat 4/11

6:00 pm-7:31 pm

Nonstop1h 31m

Lambert-St Louis

Sun 4/12

9:10 am-10:40 am

Nonstop1h 30m

$275

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Fri 4/24

5:55 pm-11:15 pm

1 stop5h 20m

Lambert-St Louis

Mon 4/27

1:35 pm-7:10 pm

1 stop5h 35m

$284

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Sat 4/18

5:04 pm-11:13 pm

2 stops6h 09m

Lambert-St Louis

Mon 4/20

12:23 pm-8:40 pm

2 stops8h 17m

$295

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/20

Showing 1-10 of 60 resultsSorted by cheapest first
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 January is currently the most expensive (average of $253). 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 March 23, 2026.

It’s typically best to fly out from Michigan to St. Louis at noon. Doing so could potentially save you 19% on the flight price compared to flying in the evening, 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 March 23, 2026.

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. Monday afternoons 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 March 23, 2026.

The most flights from USMI to STL are scheduled on a Monday (14 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (12 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 32m. Fly via Delta, Southwest, or United Airlines 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 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 Air France (88%), KLM (78%) or Southwest (78%) 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 $453, our data indicates the cheapest price to be $154. The most popular route (Chicago O'Hare Intl - Lambert-St Louis), is priced around $184.

  • 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 January is currently the most expensive (average of $253). 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
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
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.
Newark to St. Louis flights
John F Kennedy Intl to Kansas City flights
LaGuardia to St. Louis flights
John F Kennedy Intl to St. Louis flights
Seattle to Kansas City flights
LaGuardia to Kansas City flights
Newark to Kansas City flights
Denver to St. Louis flights
Denver to Kansas City flights
Los Angeles to Kansas City flights
Dulles Intl to Kansas City flights
Dulles Intl to St. Louis flights
Dallas/Fort Worth to St. Louis flights
Los Angeles to St. Louis flights
Boston to St. Louis flights
Seattle to St. Louis flights
Boston to Kansas City flights
O'Hare Intl to Kansas City flights
Atlanta to Kansas City flights
San Francisco to Kansas City flights
Baltimore to St. Louis flights
Philadelphia to St. Louis flights
Minneapolis to Kansas City flights
Dallas/Fort Worth to Kansas City flights
Reagan-National to St. Louis flights
San Francisco to St. Louis flights
Reagan-National to Kansas City flights
Sky Harbor Intl to Kansas City flights
Orlando to St. Louis flights
Baltimore to Kansas City flights
Atlanta to St. Louis flights
Sky Harbor Intl to St. Louis flights
Hobby to Kansas City flights
Hobby to St. Louis flights
Minneapolis to St. Louis flights
Orlando to Kansas City flights
O'Hare Intl to St. Louis flights
Detroit to St. Louis flights
Philadelphia to Kansas City flights
Raleigh to St. Louis flights
George Bush Intcntl to St. Louis flights
George Bush Intcntl to Kansas City flights
Fort Lauderdale to Kansas City flights
Fort Lauderdale to St. Louis flights
Ontario to Kansas City flights
Detroit to Kansas City flights
Miami to St. Louis flights
Tampa to Kansas City flights
Ontario to St. Louis flights
Salt Lake City 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 March 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$28Average$88FlexibilityNo cancel feeOn-time65%
FrontierCheapest$111Average$262FlexibilityNo cancel feeOn-time62%
DeltaCheapest$120Average$349FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$121Average$361FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$200Average$325FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$228Average$372FlexibilityNo 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.