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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 11/6. Fares are subject to change and may not be available on all flights or dates of travel.
STL — DTT
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Detroit All airports are usually found in July or August, booked 56 days in advance, depart on a Friday or Thursday and return on a Friday

Cheap 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 September 11, 2025.

Round-trip from

$153
(Frontier)

One-way from

$67
(Kiwi.com)

Popular in

October

Cheapest in

July

Average price

$349

Good round-trip deal

$244 or less

Good one-way deal

$147 or less
From Lambert-St Louis to Detroit (DTT)
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One-way flight from Lambert-St Louis to Detroit (DTT)
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Highest demand for flights based on searches. 18% potential increase in price ($64 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Lambert-St Louis to Detroit (DTT).
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Price to beat on a one-way flight from Lambert-St Louis to Detroit (DTT).
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Find 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 September 11, 2025.

This Frontier deal was found by Cheapflights users on 9/10. 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 10/39:32 pmSTL - DTW
1 stop11h 58mFrontier
Mon 10/61:36 pmDTW - STL
1 stop8h 01mFrontier
Deal found 9/10$153
This Booking.com deal was found by Cheapflights users on 9/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2810:39 amSTL - DTW
1 stop22h 08mFrontier
Wed 10/12:52 pmDTW - STL
1 stop25h 12mFrontier
Deal found 9/8$166
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/17:55 pmSTL - DTW
1 stop13h 59mMultiple Airlines
Wed 10/229:05 pmDTW - STL
1 stop14h 32mMultiple Airlines
Deal found 9/10$171
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/176:05 pmSTL - DTW
1 stop16h 12mFrontier
Wed 10/226:00 amDTW - STL
1 stop28h 07mFrontier
Deal found 9/9$174
This Delta deal was found by Cheapflights users on 9/10. 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.
Tue 10/146:40 amSTL - DTW
Nonstop1h 32mDelta
Tue 10/2112:45 pmDTW - STL
Nonstop1h 37mDelta
Deal found 9/10$175
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/911:32 amSTL - DTW
1 stop10h 34mMultiple Airlines
Sat 10/118:18 pmDTW - STL
1 stop14h 04mMultiple Airlines
Deal found 9/10$177
This Frontier deal was found by Cheapflights users on 9/10. 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 10/39:32 pmSTL - DTW
1 stop11h 58mFrontier
Sun 10/510:54 amDTW - STL
1 stop5h 10mFrontier
Deal found 9/10$180
This Delta deal was found by Cheapflights users on 9/10. 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 10/86:40 amSTL - DTW
Nonstop1h 32mDelta
Sat 10/117:55 pmDTW - STL
Nonstop1h 38mDelta
Deal found 9/10$181
This Booking.com deal was found by Cheapflights users on 9/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/277:55 pmSTL - DTW
1 stop14h 09mFrontier
Sun 9/281:36 pmDTW - STL
1 stop24h 26mFrontier
Deal found 9/8$186
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/17:55 pmSTL - DTW
1 stop13h 59mFrontier
Sun 10/56:10 amDTW - STL
1 stop27h 56mFrontier
Deal found 9/8$187

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 September 11, 2025.
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

Wed 10/8

6:40 am-9:12 am

Nonstop1h 32m

Detroit Metropolitan Wayne County

Sat 10/11

7:55 pm-8:33 pm

Nonstop1h 38m

$181

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Thu 10/23

6:00 am-11:43 am

1 stop4h 43m

Detroit Metropolitan Wayne County

Mon 10/27

7:45 pm-8:23 pm

Nonstop1h 38m

$199

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Wed 10/15

5:30 pm-8:00 pm

Nonstop1h 30m

Detroit Metropolitan Wayne County

Thu 10/16

8:05 pm-8:45 pm

Nonstop1h 40m

$204

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Sat 10/11

6:00 pm-8:30 pm

Nonstop1h 30m

Detroit Metropolitan Wayne County

Mon 10/13

8:05 pm-8:45 pm

Nonstop1h 40m

$219

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Wed 10/8

1:15 pm-9:25 pm

2 stops7h 10m

Detroit Metropolitan Wayne County

Sat 10/11

6:40 am-2:30 pm

1 stop8h 50m

$225

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Mon 10/13

8:10 pm-10:40 pm

Nonstop1h 30m

Detroit Metropolitan Wayne County

Thu 10/23

8:05 pm-8:45 pm

Nonstop1h 40m

$233

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Fri 10/10

5:28 pm-11:41 pm

1 stop5h 13m

Detroit Metropolitan Wayne County

Fri 10/17

6:00 am-10:49 am

1 stop5h 49m

$241

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Wed 10/1

2:05 pm-9:25 pm

2 stops6h 20m

Detroit Metropolitan Wayne County

Wed 10/8

6:40 am-1:50 pm

2 stops8h 10m

$246

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Fri 11/7

6:40 am-9:12 am

Nonstop1h 32m

Detroit Metropolitan Wayne County

Sun 11/9

4:25 pm-5:09 pm

Nonstop1h 44m

$257

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Wed 10/29

5:30 pm-8:00 pm

Nonstop1h 30m

$88

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/8

Showing 1-10 of 21 results
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2
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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 August 29, 2025.

Booking 24 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, August is the cheapest month in which you can book a flight from St. Louis to Detroit (average of $250). Flying from St. Louis to Detroit in March is currently the most expensive (average of $305). 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 September 11, 2025.

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 75% 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 September 7, 2025.

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. Sunday 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 September 11, 2025.

The most flights from STL to DTT 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 (6 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 September 11, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and Spirit Airlines 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
4,248 reviews

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,960 reviews
Southwest
8.0
Very good
4,248 reviews

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Spirit Airlines
6.3
Okay
8,023 reviews
Southwest
8.0
Very good
4,248 reviews

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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 12 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 1h 30m. Fly via Delta or Southwest to get the fastest option. The distance between St. Louis and Detroit is about 439 mi. All flights are typically nonstop.

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

    Currently priced at $41, 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 Southwest and Delta - these airlines can fly you to your destination from $119 and $123, respectively. These flights start at 86% lower than the current average price 3 months from now.

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

    Consider SkyWest Airlines (100%), Korean Air (95%) or Spirit Airlines (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 $77. While the most popular route (Lambert-St Louis - Detroit Metropolitan Wayne County) can be booked for $167 on average, our data indicates $944 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, August is the cheapest month in which you can book a flight from St. Louis to Detroit (average of $250). Flying from St. Louis to Detroit in March is currently the most expensive (average of $305). 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$41Average$80FlexibilityNo cancel feeOn-time65%
SouthwestCheapest$119Average$300FlexibilityNo cancel feeOn-time63%
DeltaCheapest$123Average$309FlexibilityNo cancel feeOn-timeN/A

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