Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Detroit from $73

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 10/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Detroit

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
4:57 pm - 12:40 am
STL
-
DTW
6h 43m
1 stop
Frontier Logo
6:00 am - 5:22 pm
DTW
-
STL
12h 22m
1 stop
$142Frontier
Wed, Aug 12 - Sun, Aug 23
Frontier Logo
4:57 pm - 12:40 am
STL
-
DTW
6h 43m
1 stop
Frontier Logo
6:40 pm - 5:22 pm
DTW
-
STL
23h 42m
1 stop
$143Frontier
Wed, Aug 12 - Wed, Aug 26
Frontier Logo
4:57 pm - 9:20 am
STL
-
DTW
15h 23m
1 stop
Frontier Logo
8:46 pm - 5:22 pm
DTW
-
STL
21h 36m
1 stop
$144Frontier
Mon, Aug 17 - Thu, Aug 20
Frontier Logo
4:57 pm - 9:20 am
STL
-
DTW
15h 23m
1 stop
Frontier Logo
8:46 pm - 5:22 pm
DTW
-
STL
21h 36m
1 stop
$145Frontier
Mon, Aug 17 - Thu, Aug 20
Frontier Logo
10:35 am - 12:42 am
STL
-
DTW
13h 07m
1 stop
Frontier Logo
3:34 pm - 9:40 am
DTW
-
STL
19h 06m
1 stop
$146Frontier
Fri, Sep 11 - Sun, Sep 13
Frontier Logo
10:35 am - 12:42 am
STL
-
DTW
13h 07m
1 stop
Frontier Logo
3:34 pm - 9:40 am
DTW
-
STL
19h 06m
1 stop
$148Frontier
Sun, Sep 20 - Tue, Sep 22
Frontier Logo
10:35 am - 12:42 am
STL
-
DTW
13h 07m
1 stop
Frontier Logo
3:38 pm - 9:40 am
DTW
-
STL
19h 02m
1 stop
$149Frontier
Thu, Oct 8 - Tue, Oct 13
Frontier Logo
6:17 pm - 1:04 am
STL
-
DTW
5h 47m
1 stop
Frontier Logo
6:00 am - 5:22 pm
DTW
-
STL
12h 22m
1 stop
$150Frontier
Fri, Aug 21 - Fri, Aug 28
Frontier Logo
10:35 am - 12:42 am
STL
-
DTW
13h 07m
1 stop
Frontier Logo
3:34 pm - 9:40 am
DTW
-
STL
19h 06m
1 stop
$151Frontier
Thu, Sep 10 - Fri, Sep 11
Frontier Logo
6:17 pm - 1:04 am
STL
-
DTW
5h 47m
1 stop
Frontier Logo
6:40 pm - 5:22 pm
DTW
-
STL
23h 42m
1 stop
$153Frontier
Mon, Aug 24 - Wed, Aug 26

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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
Aug 20
STL6:17 pmLambert-St Louis
5h 47m
1 stop
DTW1:04 amDetroit Metropolitan Wayne County
Aug 23
DTW6:00 amDetroit Metropolitan Wayne County
12h 22m
1 stop
STL5:22 pmLambert-St Louis
$143
Frontier
Aug 17
STL4:57 pmLambert-St Louis
15h 23m
1 stop
DTW9:20 amDetroit Metropolitan Wayne County
Aug 20
DTW8:46 pmDetroit Metropolitan Wayne County
21h 36m
1 stop
STL5:22 pmLambert-St Louis
$144
Frontier
Aug 17
STL4:57 pmLambert-St Louis
15h 23m
1 stop
DTW9:20 amDetroit Metropolitan Wayne County
Aug 20
DTW8:46 pmDetroit Metropolitan Wayne County
21h 36m
1 stop
STL5:22 pmLambert-St Louis
$145

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

Our best Southwest deals on St. Louis to Detroit Metropolitan Wayne County Airport flight tickets
Southwest
Aug 29
STL1:25 pmLambert-St Louis
6h 35m
2 stops
DTW9:00 pmDetroit Metropolitan Wayne County
Sep 3
DTW6:55 amDetroit Metropolitan Wayne County
1h 50m
STL7:45 amLambert-St Louis
$232
Southwest
Aug 17
STL10:10 amLambert-St Louis
1h 30m
DTW12:40 pmDetroit Metropolitan Wayne County
Aug 20
DTW2:40 pmDetroit Metropolitan Wayne County
1h 30m
STL3:10 pmLambert-St Louis
$239
Southwest
Aug 7
STL10:10 amLambert-St Louis
1h 30m
DTW12:40 pmDetroit Metropolitan Wayne County
Aug 10
DTW3:50 pmDetroit Metropolitan Wayne County
6h 50m
1 stop
STL9:40 pmLambert-St Louis
$352

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 July 24, 2026.
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

Cheapest round-trip

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Wed 8/12

4:57 pm-12:40 am

1 stop6h 43m

Detroit Metropolitan Wayne County

Sun 8/23

6:00 am-5:22 pm

1 stop12h 22m

$142

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Wed 8/12

4:57 pm-12:40 am

1 stop6h 43m

Detroit Metropolitan Wayne County

Wed 8/26

6:40 pm-5:22 pm

1 stop23h 42m

$143

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Mon 8/17

4:57 pm-9:20 am

1 stop15h 23m

Detroit Metropolitan Wayne County

Thu 8/20

8:46 pm-5:22 pm

1 stop21h 36m

$144

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Mon 8/17

4:57 pm-9:20 am

1 stop15h 23m

Detroit Metropolitan Wayne County

Thu 8/20

8:46 pm-5:22 pm

1 stop21h 36m

$145

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Fri 9/11

10:35 am-12:42 am

1 stop13h 07m

Detroit Metropolitan Wayne County

Sun 9/13

3:34 pm-9:40 am

1 stop19h 06m

$146

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Sun 9/20

10:35 am-12:42 am

1 stop13h 07m

Detroit Metropolitan Wayne County

Tue 9/22

3:34 pm-9:40 am

1 stop19h 06m

$148

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Thu 10/8

10:35 am-12:42 am

1 stop13h 07m

Detroit Metropolitan Wayne County

Tue 10/13

3:38 pm-9:40 am

1 stop19h 02m

$149
Quickest round-trip

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Fri 8/21

6:17 pm-1:04 am

1 stop5h 47m

Detroit Metropolitan Wayne County

Fri 8/28

6:00 am-5:22 pm

1 stop12h 22m

$150

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Thu 9/10

10:35 am-12:42 am

1 stop13h 07m

Detroit Metropolitan Wayne County

Fri 9/11

3:34 pm-9:40 am

1 stop19h 06m

$151

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Mon 8/24

6:17 pm-1:04 am

1 stop5h 47m

Detroit Metropolitan Wayne County

Wed 8/26

6:40 pm-5:22 pm

1 stop23h 42m

$153

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 typical price of a round-trip flight between St. Louis and Detroit Metropolitan Wayne County Airport?

Prices are currently low for flights on this route.

Typical prices usually range from $177 to $355.
The lowest price recently found on this route was $142.

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 $146, 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 October instead. Flights to Detroit Metropolitan Wayne County Airport in October, while not as cheap as those in August, still average around $268.

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 $481. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Detroit Metropolitan Wayne County Airport on Sunday is $682.

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 $307 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 $864. 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 from St. Louis 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 $348 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 $243 on momondo.

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

There are 4 cabin classes available to choose from on St. Louis to Detroit Metropolitan Wayne County Airport 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 July 2026, prices for St. Louis to Detroit Metropolitan Wayne County Airport flights are approximately 50% 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

$215

Fastest flight time

1h 25m

Direct flights

Every day
The best one-way flight to Detroit Metropolitan Wayne County Airport from St. Louis in the past 72 hours is $215. The best round-trip flight deal from St. Louis to Detroit Metropolitan Wayne County Airport found on momondo in the last 72 hours is $359.
The fastest flight from St. Louis to Detroit Metropolitan Wayne County Airport takes 1h 25m
Direct flights go from St. Louis to Detroit Metropolitan Wayne County Airport every day.
Search flight deals

Frequently asked questions about flying from St. Louis to Detroit Metropolitan Wayne County Airport

  • 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 25m, 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
FrontierPriceFrom $80Free CancellationRating
5.6
2,771 reviews
Search Frontier flights
DeltaPriceFrom $133Free CancellationRating
7.8
8,482 reviews
Search Delta flights
SouthwestPriceFrom $177Free CancellationRating
8.0
4,236 reviews
Search Southwest flights

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

    Southwest flies from St. Louis to Detroit Metropolitan Wayne County Airport around 10 times per week, with 4,236 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 $177 (round-trip), much lower than the average airfare cost of $335 for Southwest flights on this route.

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

    Delta (7.8/10 from 8,482 reviews) operates around 22 flights from St. Louis to Detroit Metropolitan Wayne County Airport in any given week. The average Delta airfare for this route is around $364, with deals from around $133 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
Dearborn
Romulus
Troy
Southfield
Monroe
Livonia
Novi
Roseville
Port Clinton
Sterling Heights
Port Huron
Dundee
Pontiac
Ypsilanti
Belleville
Howell
Brighton

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.

An easier way to manage your Detroit Metropolitan Wayne County Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 8/23
Sun 8/30
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Detroit