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$67+ Cheap flights from St. Louis to Detroit (STL - DTT)

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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — DTT
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Detroit All airports are usually found in August or July, booked 50 days in advance, depart on a Friday or Thursday and return on a Thursday

Cheap flight deals from St. Louis to Detroit

Cheapest flights from St. Louis to Detroit
Explore the most affordable flight options available from St. Louis to Detroit. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/2. 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.
Mon 3/92:09 pm
STL
-
DTW
1 stop16h 58m
Frontier
Mon 3/169:02 am
DTW
-
STL
1 stop5h 32m
Frontier
Deal found 2/2$138
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 3/61:09 pm
STL
-
DTW
1 stop18h 38m
Frontier
Mon 3/99:02 am
DTW
-
STL
1 stop5h 17m
Frontier
Deal found 2/2$147
This Kiwi.com deal was found by Cheapflights users on 2/1. 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.
Wed 3/1811:32 am
STL
-
DTW
1 stop19h 35m
Frontier
Wed 3/259:02 am
DTW
-
STL
1 stop26h 29m
Frontier
Deal found 2/1$158
This Frontier deal was found by Cheapflights users on 1/31. 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 2/142:51 pm
STL
-
DTW
1 stop8h 04m
Frontier
Wed 2/182:04 pm
DTW
-
STL
1 stop9h 23m
Frontier
Deal found 1/31$160
This Kiwi.com deal was found by Cheapflights users on 2/2. 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.
Mon 3/92:09 pm
STL
-
DTW
2 stops16h 40m
Multiple Airlines
Mon 3/169:02 am
DTW
-
STL
1 stop5h 32m
Multiple Airlines
Deal found 2/2$173
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 4/711:21 am
STL
-
DTW
1 stop19h 41m
Frontier
Sat 4/117:35 pm
DTW
-
STL
1 stop15h 55m
Frontier
Deal found 2/2$174
This Kiwi.com deal was found by Cheapflights users on 2/2. 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.
Mon 3/92:09 pm
STL
-
DTW
1 stop16h 58m
Multiple Airlines
Wed 3/115:09 am
DTW
-
STL
2 stops19h 10m
Multiple Airlines
Deal found 2/2$176
This Kiwi.com deal was found by Cheapflights users on 2/1. 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.
Mon 2/168:22 pm
STL
-
DTW
1 stop16h 08m
Multiple Airlines
Fri 2/2010:29 pm
DTW
-
STL
1 stop9h 22m
Multiple Airlines
Deal found 2/1$177
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 2/278:22 pm
STL
-
DTW
1 stop11h 10m
Multiple Airlines
Mon 3/210:59 pm
DTW
-
STL
2 stops32h 52m
Multiple Airlines
Deal found 2/2$178
This Expedia deal was found by Cheapflights users on 2/2. 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 3/94:51 pm
STL
-
DTW
1 stop16h 16m
Frontier
Wed 3/119:04 pm
DTW
-
STL
1 stop11h 13m
Frontier
Deal found 2/2$179
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 3/61:09 pm
STL
-
DTW
2 stops17h 40m
Multiple Airlines
Mon 3/99:02 am
DTW
-
STL
1 stop5h 17m
Multiple Airlines
Deal found 2/2$180

Find flight deals from St. Louis to Detroit

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Detroit (DTT). 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 February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$138
(Kiwi.com)

One-way from

$67
(Kiwi.com)

Popular in

January

Cheapest in

August

Average price

$385

Good round-trip deal

$425 or less

Good one-way deal

$233 or less
Provider with most accurate pricing for Lambert-St Louis-Detroit (DTT) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Detroit (DTT) flights.
Search Deals
From Lambert-St Louis to Detroit (DTT)
Search Deals
One-way flight from Lambert-St Louis to Detroit (DTT)
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($80 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Lambert-St Louis to Detroit (DTT).
Search Deals
Price to beat on a one-way flight from Lambert-St Louis to Detroit (DTT).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Detroit 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 February 3, 2026.
Use the filters below to find and compare flights from St. Louis to Detroit that are best for you.

Fly from

St. Louis

Fly to

Detroit

Route

Depart

Return

Price

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Mon 3/9

2:09 pm-8:07 am

1 stop16h 58m

Detroit Metropolitan Wayne County

Mon 3/16

9:02 am-1:34 pm

1 stop5h 32m

$138

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Wed 2/18

8:17 pm-8:07 am

1 stop10h 50m

Detroit Metropolitan Wayne County

Sat 2/21

6:25 pm-11:59 pm

1 stop6h 34m

$160

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Sat 2/14

2:51 pm-11:55 pm

1 stop8h 04m

Detroit Metropolitan Wayne County

Wed 2/18

2:04 pm-10:27 pm

1 stop9h 23m

$181

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Tue 4/7

4:54 pm-8:02 am

2 stops14h 08m

Detroit Metropolitan Wayne County

Sat 4/11

7:35 pm-10:30 am

1 stop15h 55m

$205

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Wed 3/18

11:32 am-8:07 am

1 stop19h 35m

Detroit Metropolitan Wayne County

Wed 3/25

9:02 am-7:17 am

2 stops23h 15m

$205

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Tue 4/7

6:45 pm-9:15 pm

Nonstop1h 30m

Detroit Metropolitan Wayne County

Sat 4/11

7:20 am-8:00 am

Nonstop1h 40m

$206

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Mon 3/16

8:12 pm-10:59 am

1 stop13h 47m

Detroit Metropolitan Wayne County

Wed 3/18

5:07 pm-12:15 pm

2 stops20h 08m

$222

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Mon 3/16

8:12 pm-10:59 am

1 stop13h 47m

Detroit Metropolitan Wayne County

Fri 3/20

6:05 am-1:34 pm

1 stop8h 29m

$226

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Tue 3/17

8:06 pm-10:59 am

2 stops13h 53m

Detroit Metropolitan Wayne County

Thu 3/19

5:07 pm-1:34 pm

1 stop21h 27m

$248

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Mon 3/16

8:12 pm-10:59 am

1 stop13h 47m

Detroit Metropolitan Wayne County

Thu 3/19

5:07 pm-11:19 am

2 stops19h 12m

$254

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 20 results
1
2

Compare providers for flights from St. Louis to Detroit

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 St. Louis to Detroit in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
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 St. Louis-Detroit flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Detroit flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Detroit flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Detroit 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 St. Louis-Detroit 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 St. Louis to Detroit

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

How far ahead should I book a flight from St. Louis to Detroit?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Detroit. Price data was last updated on January 30, 2026.

Booking 49 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Detroit. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, June is the cheapest month in which you can book a flight from St. Louis to Detroit (average of $48). Flying from St. Louis to Detroit in March is currently the most expensive (average of $246). 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 STL to DTT?

Find hourly flight availability from St. Louis to Detroit. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 3, 2026.

One of the essential ways to save on airfare from St. Louis to Detroit is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 67% on airfare.

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

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Detroit. Price data was last updated on January 31, 2026.

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

Weekly flight availability from St. Louis to Detroit

Explore weekly flight availability from St. Louis to Detroit. 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 February 3, 2026.

The most flights from STL to DTT are scheduled on a Tuesday (12 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (8 on average).

How much does it cost to fly round-trip from St. Louis to Detroit?

Reviews of airlines servicing Detroit

Get insights into the airlines that provide service to Detroit. 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 Detroit. Reviews last updated February 3, 2026.
Peruse reviews from past customers who have flown with Southwest, Delta, and JetBlue from St. Louis to Detroit to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,273 reviews

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,273 reviews
Southwest
8.0
Very good
4,273 reviews

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,139 reviews
Southwest
8.0
Very good
4,273 reviews

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
JetBlue
7.2
Good
2,893 reviews
Southwest
8.0
Very good
4,273 reviews

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Spirit Airlines
6.3
Okay
8,408 reviews
Southwest
8.0
Very good
4,273 reviews

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Detroit. 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 St. Louis to Detroit?

    You will need to book a flight from Lambert-St Louis to Detroit All airports if you want to fly from St. Louis to Detroit. At least 3 different airlines have flights from Lambert-St Louis (STL) to All airports (DTT) on a regular basis. There are 10 flights to Detroit from the St. Louis airport per day. If you manage to book one that is nonstop, then you can expect the flight time from STL to DTT to be around 1h 30m.

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

    There are many flights that can get you from St. Louis to Detroit in 16h 58m. Fly via Frontier to get the fastest option. The distance between St. Louis and Detroit is about 439 mi.

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

    Currently priced at $38, Spirit Airlines will fly you from St. Louis to Detroit and back. In addition to Spirit Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and Southwest - these airlines can fly you to your destination from $75 and $119, respectively. These flights start at 86% lower than the current average price 3 months from now.

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

    One-way options have recently been found by users for as low as $30 on Spirit Airlines. Other airlines that offer cheap prices include Southwest from $60 and Delta from $75 one-way.

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

    Consider Aeromexico (100%), Endeavor Airlines (100%) or Korean Air (87%) when booking your flight. These represent the most reliable airlines when flying from St. Louis to Detroit.

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

    Looking at all options, your cheapest flight can be booked for $158. While the most popular route (Lambert-St Louis - Detroit Metropolitan Wayne County) can be booked for $163 on average, our data indicates $923 when flying from St. Louis to Detroit.

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

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

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

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

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

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

    Currently, June is the cheapest month in which you can book a flight from St. Louis to Detroit (average of $48). Flying from St. Louis to Detroit in March is currently the most expensive (average of $246). 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 Detroit?

Book flights to Detroit if you plan to visit one of these locations
Roseville
Port Huron

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Alternative routes for St. Louis to Detroit

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from St. Louis to Detroit

Discover the top 3 airlines that operate flights from St. Louis to Detroit. 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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$38Average$78FlexibilityNo cancel feeOn-time65%
DeltaCheapest$75Average$289FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$119Average$273FlexibilityNo cancel feeOn-time63%

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