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$74+ Cheap flights from Detroit Metropolitan Wayne County Airport to St. Louis (DTW - 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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
DTW — STL
Apr 23 — Apr 301
Thu 4/23
Thu 4/30
1 adult, Economy
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Cheapflights Tip: The best prices from Detroit Metropolitan Wayne County to Lambert-St Louis are usually found in July or August, booked 40 days in advance, depart on a Thursday or Friday and return on a Friday

Cheap flight deals from Detroit to St. Louis

Cheapest flights from Detroit to St. Louis
Explore the most affordable flight options available from Detroit to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 24, 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 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 Detroit to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Detroit (DTW) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$140
(Expedia)

One-way from

$74
(Kiwi.com)

Popular in

March

Cheapest in

July

Average price

$384

Good round-trip deal

$339 or less

Good one-way deal

$202 or less
Provider with most accurate pricing for Detroit Metropolitan Wayne County-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Detroit Metropolitan Wayne County-Lambert-St Louis flights.
Search Deals
From Detroit Metropolitan Wayne County to Lambert-St Louis
Search Deals
One-way flight from Detroit Metropolitan Wayne County to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($60 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 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 Detroit Metropolitan Wayne County to Lambert-St Louis.
Search Deals
Price to beat on a one-way flight from Detroit Metropolitan Wayne County to Lambert-St Louis.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Detroit 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 24, 2026.
Use the filters below to find and compare flights from Detroit Metropolitan Wayne County Airport 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 4/20

7:00 am-7:45 am

Nonstop1h 45m

Lambert-St Louis

Mon 4/27

7:40 pm-10:10 pm

Nonstop1h 30m

$271

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Tue 4/14

8:40 am-9:13 pm

2 stops13h 33m

Lambert-St Louis

Wed 4/15

6:30 am-3:37 pm

2 stops8h 07m

$298

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Sat 4/25

4:00 pm-4:42 pm

Nonstop1h 42m

Lambert-St Louis

Mon 4/27

1:46 pm-4:22 pm

Nonstop1h 36m

$339

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Tue 5/5

7:00 am-11:32 am

1 stop5h 32m

Lambert-St Louis

Tue 5/12

6:04 pm-8:37 pm

Nonstop1h 33m

$349
Quickest round-trip

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Fri 4/17

4:00 pm-4:42 pm

Nonstop1h 42m

Lambert-St Louis

Sun 4/19

6:48 am-9:17 am

Nonstop1h 29m

$350

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Fri 5/15

3:35 pm-10:55 pm

2 stops8h 20m

Lambert-St Louis

Sun 5/17

6:00 am-12:00 pm

1 stop5h 00m

$364

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Sat 4/25

5:50 am-1:35 pm

2 stops8h 45m

Lambert-St Louis

Mon 4/27

10:15 am-7:35 pm

2 stops8h 20m

$369

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Wed 5/13

9:39 pm-12:24 am

1 stop3h 45m

Lambert-St Louis

Sat 5/16

7:45 am-3:24 pm

1 stop6h 39m

$407

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Thu 4/9

6:00 am-2:24 pm

2 stops9h 24m

Lambert-St Louis

Sun 4/12

8:15 pm-1:16 am

1 stop4h 01m

$412
Cheapest one-way

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Mon 4/6

8:01 pm-11:25 pm

1 stop28h 24m

$96

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/23

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Detroit to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Detroit to St. Louis in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Detroit Metropolitan Wayne County Airport-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Detroit Metropolitan Wayne County Airport-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Detroit Metropolitan Wayne County Airport-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Detroit Metropolitan Wayne County Airport-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Detroit Metropolitan Wayne County Airport-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Detroit to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Detroit 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 Detroit Metropolitan Wayne County Airport to St. Louis

How far ahead should I book a flight from Detroit Metropolitan Wayne County Airport to St. Louis?

Use this chart to determine the optimal time to book a round-trip flight from Detroit to St. Louis. Price data was last updated on March 13, 2026.

The price you pay for your flight from Detroit Metropolitan Wayne County Airport to St. Louis may vary depending on when you book. For the best chance of a lower fare, look to book 40 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Detroit Metropolitan Wayne County Airport to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Detroit Metropolitan Wayne County Airport to St. Louis (average of $39). Flying from Detroit Metropolitan Wayne County Airport 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 DTW to STL?

Find hourly flight availability from Detroit 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 24, 2026.

Unlike in the evening, when flights are generally more expensive, you can save up to 19% on flights from Detroit Metropolitan Wayne County Airport to St. Louis by exploring options for tickets at noon.

What is the cheapest day to fly from Detroit Metropolitan Wayne County Airport to St. Louis?

Use this chart to determine the cheapest time to fly round-trip from Detroit to St. Louis. Price data was last updated on March 23, 2026.

Travelers seeking maximum savings on their Detroit Metropolitan Wayne County Airport 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.

The best insider tips for Detroit Metropolitan Wayne County Airport to St. Louis flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Detroit Metropolitan Wayne County Airport to St. Louis trip
Our travel experts
Brandon Schultz

Brandon Schultz

Expert on DTW

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more
Taryn White

Taryn White

Expert on STL

Taryn White is a freelance travel writer, digital creator, and travel advisor who has visited nearly 100 countries and all 50 states. She’s familiar with many airports and enjoys beach hopping, boutique hotels, spa experiences, and exploring local culture. Her work has appeared in Travel + Leisure, Condé Nast Traveler, National Geographic, Smithsonian Magazine, AFAR, and more.

Read more

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated March 24, 2026.
Read reviews from past customers who have flown Southwest,Delta, andSpirit Airlines from Detroit Metropolitan Wayne County Airport to St. Louis. 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.
Southwest
8.0
Very good
4,324 reviews

Crew

8.6

Food

7.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,324 reviews
Southwest
8.0
Very good
4,324 reviews

Crew

8.6

Food

7.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,318 reviews
Southwest
8.0
Very good
4,324 reviews

Crew

8.6

Food

7.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Spirit Airlines
6.3
Okay
8,539 reviews
Southwest
8.0
Very good
4,324 reviews

Crew

8.6

Food

7.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Frontier
5.7
Fair
3,020 reviews
Southwest
8.0
Very good
4,324 reviews

Crew

8.6

Food

7.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Related info for your journey

Find useful and relevant information for your journey from Detroit 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 airports do I use to fly from Detroit to St. Louis?

    If you book a flight from Detroit to St. Louis, you will be flying from Detroit Metropolitan Wayne County to Lambert-St Louis. Flights to Lambert-St Louis (STL) from Detroit Metropolitan Wayne County (DTW) take 1h 35m for a nonstop flight. There are 12 flights from Detroit Metropolitan Wayne County to St. Louis per day from 4 airlines.

  • How long is the flight from Detroit Metropolitan Wayne County Airport to St. Louis?

    For as low as $339, Southwest can have you in St. Louis from Detroit Metropolitan Wayne County Airport in 1h 42m. Airlines will cover a distance of 439 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Detroit Metropolitan Wayne County Airport to St. Louis round-trip?

    Our cheapest airline available from Detroit Metropolitan Wayne County Airport to St. Louis is Spirit Airlines. Our recent data shows that you can find tickets from as low as $28 on this airline. Additional options worth looking into are Frontier and Delta, starting at $111 and $120 round-trip. You may be able to fly from Detroit Metropolitan Wayne County Airport to St. Louis for 90% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Detroit Metropolitan Wayne County Airport to St. Louis one-way?

    One-way options have recently been found by users for as low as $36 on Spirit Airlines. Other airlines that offer cheap prices include Delta from $60 and Southwest from $69 one-way.

  • What are the most reliable airlines from Detroit Metropolitan Wayne County Airport to St. Louis?

    No one likes to see their flight delayed. When booking a flight from Detroit Metropolitan Wayne County Airport 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 Detroit Metropolitan Wayne County Airport to St. Louis?

    On average you can expect to pay $453 for a flight from Detroit Metropolitan Wayne County Airport to St. Louis. The cheapest flight overall is $154 while the most popular route, (Detroit Metropolitan Wayne County - Lambert-St Louis) is currently priced at $239.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Detroit 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 Detroit Metropolitan Wayne County Airport to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Detroit Metropolitan Wayne County Airport to St. Louis (average of $39). Flying from Detroit Metropolitan Wayne County Airport 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

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Alternative routes for Detroit to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
Detroit to Kansas City flights
Detroit to Springfield flights
Detroit to Columbia flights

Top 4 airlines flying from Detroit to St. Louis

Discover the top 4 airlines that operate flights from Detroit 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 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$28Average$88FlexibilityNo cancel feeOn-time65%
FrontierCheapest$111Average$229FlexibilityNo cancel feeOn-time62%
DeltaCheapest$120Average$334FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$121Average$310FlexibilityNo cancel feeOn-time63%

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