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Cheap flights from St. Louis to Detroit from $71

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Detroit departing on 10/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from St. Louis to Detroit

Cheap round-trip flights

Frontier Logo
9:32 pm - 10:30 amSTL-DTW
11h 58m1 stop
Frontier Logo
1:36 pm - 8:37 pmDTW-STL
8h 01m1 stop
$153Frontier
Find Deal
Fri, Oct 3 - Mon, Oct 6
Frontier Logo
11:27 am - 5:12 pmSTL-DTW
4h 45m1 stop
Frontier Logo
9:05 pm - 9:07 amDTW-STL
13h 02m1 stop
$174Frontier
Find Deal
Sun, Nov 2 - Sun, Nov 2
Logo
11:32 am - 8:16 amSTL-DTW
19h 44m1 stop
Logo
7:55 am - 9:07 amDTW-STL
26h 12m1 stop
$180
Find Deal
Fri, Oct 10 - Tue, Oct 14
Logo
11:32 am - 8:16 amSTL-DTW
19h 44m1 stop
Logo
9:05 pm - 9:22 amDTW-STL
37h 17m2 stops
$182
Find Deal
Fri, Oct 10 - Tue, Oct 14
American Airlines Logo
6:00 am - 5:34 pmSTL-DTW
10h 34m1 stop
American Airlines Logo
7:00 am - 4:04 pmDTW-STL
10h 04m1 stop
$183American Airlines
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Wed, Oct 8 - Tue, Oct 14
American Airlines Logo
5:30 am - 12:52 pmSTL-DTW
6h 22m1 stop
American Airlines Logo
7:26 pm - 11:58 pmDTW-STL
5h 32m1 stop
$223American Airlines
Find Deal
Thu, Oct 23 - Mon, Oct 27
Delta Logo
2:36 pm - 5:10 pmSTL-DTW
1h 34mnonstop
Delta Logo
1:09 pm - 1:51 pmDTW-STL
1h 42mnonstop
$255Delta
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Wed, Dec 10 - Mon, Dec 15
Southwest Logo
5:40 am - 11:45 amSTL-DTW
5h 05m1 stop
Southwest Logo
8:25 am - 9:05 amDTW-STL
1h 40mnonstop
$265Southwest
Find Deal
Thu, Oct 23 - Mon, Oct 27
Delta Logo
2:15 pm - 4:45 pmSTL-DTW
1h 30mnonstop
Delta Logo
12:45 pm - 1:22 pmDTW-STL
1h 37mnonstop
$268Delta
Find Deal
Fri, Oct 10 - Tue, Oct 14
Southwest Logo
2:25 pm - 10:40 pmSTL-DTW
7h 15m2 stops
Southwest Logo
5:40 am - 12:35 pmDTW-STL
7h 55m2 stops
$285Southwest
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Wed, Dec 10 - Mon, Dec 15

Delta flights from St. Louis to Detroit Metropolitan Wayne County Airport

Our best Delta deals on St. Louis to Detroit Metropolitan Wayne County Airport flight tickets
Delta
Dec 10
STL2:36 pmLambert-St Louis
1h 34m
DTW5:10 pmDetroit Metropolitan Wayne County
Dec 15
DTW1:09 pmDetroit Metropolitan Wayne County
1h 42m
STL1:51 pmLambert-St Louis
$255
Find similar
Delta
Oct 10
STL2:15 pmLambert-St Louis
1h 30m
DTW4:45 pmDetroit Metropolitan Wayne County
Oct 14
DTW12:45 pmDetroit Metropolitan Wayne County
1h 37m
STL1:22 pmLambert-St Louis
$268
Find similar
Delta
Oct 16
STL6:40 amLambert-St Louis
1h 32m
DTW9:12 amDetroit Metropolitan Wayne County
Oct 19
DTW8:55 amDetroit Metropolitan Wayne County
1h 42m
STL9:37 amLambert-St Louis
$287
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Frontier flights from St. Louis to Detroit Metropolitan Wayne County Airport

Our best Frontier deals on St. Louis to Detroit Metropolitan Wayne County Airport flight tickets
Frontier
Oct 3
STL9:32 pmLambert-St Louis
11h 58m
1 stop
DTW10:30 amDetroit Metropolitan Wayne County
Oct 6
DTW1:36 pmDetroit Metropolitan Wayne County
8h 01m
1 stop
STL8:37 pmLambert-St Louis
$153
Find similar
Frontier
Nov 2
STL11:27 amLambert-St Louis
4h 45m
1 stop
DTW5:12 pmDetroit Metropolitan Wayne County
Nov 2
DTW9:05 pmDetroit Metropolitan Wayne County
13h 02m
1 stop
STL9:07 amLambert-St Louis
$174
Find similar
Frontier
Oct 3
STL9:32 pmLambert-St Louis
11h 58m
1 stop
DTW10:30 amDetroit Metropolitan Wayne County
Oct 6
DTW9:39 amDetroit Metropolitan Wayne County
11h 58m
2 stops
STL8:37 pmLambert-St Louis
$186
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Detroit Metropolitan Wayne County Airport 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, momondo users made 832,500 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from St. Louis to Detroit Metropolitan Wayne County Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Fri 10/3

9:32 pm-10:30 am

1 stop11h 58m

Detroit Metropolitan Wayne County

Mon 10/6

1:36 pm-8:37 pm

1 stop8h 01m

$153

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Sun 11/2

11:27 am-5:12 pm

1 stop4h 45m

Detroit Metropolitan Wayne County

Sun 11/2

9:05 pm-9:07 am

1 stop13h 02m

$174

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Fri 10/10

11:32 am-8:16 am

1 stop19h 44m

Detroit Metropolitan Wayne County

Tue 10/14

7:55 am-9:07 am

1 stop26h 12m

$180

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Fri 10/10

11:32 am-8:16 am

1 stop19h 44m

Detroit Metropolitan Wayne County

Tue 10/14

9:05 pm-9:22 am

2 stops37h 17m

$182

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Wed 10/8

6:00 am-5:34 pm

1 stop10h 34m

Detroit Metropolitan Wayne County

Tue 10/14

7:00 am-4:04 pm

1 stop10h 04m

$183

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Thu 10/23

5:30 am-12:52 pm

1 stop6h 22m

Detroit Metropolitan Wayne County

Mon 10/27

7:26 pm-11:58 pm

1 stop5h 32m

$223

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Wed 12/10

2:36 pm-5:10 pm

Nonstop1h 34m

Detroit Metropolitan Wayne County

Mon 12/15

1:09 pm-1:51 pm

Nonstop1h 42m

$255

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Thu 10/23

5:40 am-11:45 am

1 stop5h 05m

Detroit Metropolitan Wayne County

Mon 10/27

8:25 am-9:05 am

Nonstop1h 40m

$265

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Fri 10/10

2:15 pm-4:45 pm

Nonstop1h 30m

Detroit Metropolitan Wayne County

Tue 10/14

12:45 pm-1:22 pm

Nonstop1h 37m

$268

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Wed 12/10

2:25 pm-10:40 pm

2 stops7h 15m

Detroit Metropolitan Wayne County

Mon 12/15

5:40 am-12:35 pm

2 stops7h 55m

$285

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Detroit from

How to get the cheapest flight ticket from St. Louis to Detroit Metropolitan Wayne County Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Detroit Metropolitan Wayne County Airport?

The cheapest month to fly to Detroit Metropolitan Wayne County Airport from St. Louis is in August. Flight prices, which tend to average around $140, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of August, then book flights to Detroit Metropolitan Wayne County Airport from St. Louis during July instead. Flights to Detroit Metropolitan Wayne County Airport in July, while not as cheap as those in August, still average around $149.

What is the cheapest day to depart on your flight to Detroit Metropolitan Wayne County Airport?

The cheapest day to depart from St. Louis to Detroit Metropolitan Wayne County Airport is on a Friday when prices can be found for as low as $372. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Detroit Metropolitan Wayne County Airport on Monday is $799.

What is the cheapest time of day to depart on your flight to Detroit Metropolitan Wayne County Airport?

Flying to Detroit Metropolitan Wayne County Airport from St. Louis in the evening is the least expensive time of day to depart. momondo users have found prices as low as $235 when looking at flights departing in the evening. Flights to Detroit Metropolitan Wayne County Airport are more costly at noon, with an average ticket price of $923. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Lambert-St Louis to Detroit Metropolitan Wayne County flight route?

Fly from Lambert-St Louis to Detroit Metropolitan Wayne County for the best Lambert-St Louis - Detroit Metropolitan Wayne County flight prices

How far in advance should I book a flight to Detroit Metropolitan Wayne County Airport?

You are more likely to see cheaper flights to Detroit Metropolitan Wayne County Airport from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Detroit Metropolitan Wayne County Airport for around $287 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Detroit Metropolitan Wayne County Airport from St. Louis for as low as $140 on momondo.

What cabin class options are available on Lambert-St Louis to Detroit Metropolitan Wayne County flights?

There are 4 cabin classes available to choose from on Lambert-St Louis to Detroit Metropolitan Wayne County flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on St. Louis to Detroit Metropolitan Wayne County Airport flights?

No. A direct flight is the cheapest option for a flight between St. Louis to Detroit Metropolitan Wayne County Airport.

How have St. Louis to Detroit Metropolitan Wayne County Airport flight prices changed over time?

As of September 2025, prices for St. Louis to Detroit Metropolitan Wayne County Airport flights are approximately 21% cheaper when compared to flights at the same time last year.

When to book flights from St. Louis to Detroit Metropolitan Wayne County Airport

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Detroit Metropolitan Wayne County Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Detroit Metropolitan Wayne County Airport (STL to DTW) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Detroit Metropolitan Wayne County Airport

Best Price Found

$162

Fastest flight time

1h 30m

Direct flights

Every day
The best one-way flight to Detroit Metropolitan Wayne County Airport from St. Louis in the past 72 hours is $162. The best round-trip flight deal from St. Louis to Detroit Metropolitan Wayne County Airport found on momondo in the last 72 hours is $269.
The fastest flight from St. Louis to Detroit Metropolitan Wayne County Airport takes 1h 30m
Direct flights go from St. Louis to Detroit Metropolitan Wayne County Airport every day.
Search flight deals

  • How far is Lambert-St Louis to Detroit Metropolitan Wayne County by plane?

    Lambert-St Louis and Detroit Metropolitan Wayne County are 436.9 mi apart from one another. Flights usually cover this in 1h 30m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Detroit Metropolitan Wayne County Airport?

    Prices for flights from Lambert-St Louis Airport to Detroit Metropolitan Wayne County Airport were last updated today.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Detroit Metropolitan Wayne County Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Detroit Metropolitan Wayne County Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Detroit Metropolitan Wayne County Airport.

  • What documentation or ID do you need to fly to Detroit Metropolitan Wayne County Airport?

    The necessary travel and health documents for your Detroit Metropolitan Wayne County Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from St. Louis to Detroit Metropolitan Wayne County Airport?

  • What is the most popular airline from St. Louis to Detroit Metropolitan Wayne County Airport?

Best airlines flying from St. Louis to Detroit Metropolitan Wayne County Airport

Compare and see reviews for airlines that fly from St. Louis to Detroit Metropolitan Wayne County Airport with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $41Free CancellationRating
6.3
8,015 reviews
Search Spirit Airlines flights
SouthwestPriceFrom $119Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
DeltaPriceFrom $122Free CancellationRating
7.9
7,954 reviews
Search Delta flights

  • Southwest Flights From St. Louis to Detroit Metropolitan Wayne County Airport

    Southwest flies from St. Louis to Detroit Metropolitan Wayne County Airport around 9 times per week, with 4,242 momondo users rating the airline 8.0/10. The cheapest Southwest deal from St. Louis to Detroit Metropolitan Wayne County Airport in the last 72 hours was $119 (round-trip), much lower than the average airfare cost of $300 for Southwest flights on this route.

  • Delta Flights From St. Louis to Detroit Metropolitan Wayne County Airport

    Delta (7.9/10 from 7,954 reviews) operates around 24 flights from St. Louis to Detroit Metropolitan Wayne County Airport in any given week. The average Delta airfare for this route is around $303, with deals from around $122 rare but found on momondo. Referenced prices are for round-trip St. Louis to Detroit Metropolitan Wayne County Airport flight searches in the last 72 hours.

Traveling to a place near Detroit?

Book flights to Detroit if you plan to visit one of these locations
Put-in-Bay
Auburn Hills
Warren
Monroe
Southfield
Troy
Novi
Dearborn
Romulus
Livonia
Port Huron
Port Clinton
Sterling Heights
Roseville
Brighton
Ypsilanti
Madison Heights
Pontiac
Belleville
Royal Oak

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Detroit?

It is quick and easy to find St. Louis to Detroit flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Detroit that suits you.

Can I find flights from St. Louis to Detroit with flexible booking policies on momondo?

All flight searches from St. Louis to Detroit on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from St. Louis to Detroit?

Once all potential St. Louis to Detroit flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from St. Louis to Detroit right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Detroit from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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