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Cheap flights from St. Louis to Detroit from $64

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 2/28. 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

Enter your travel dates to find the best prices.
Frontier Logo
8:17 pm - 8:07 am
STL
-
DTW
10h 50m
1 stop
Frontier Logo
8:30 am - 3:53 pm
DTW
-
STL
8h 23m
1 stop
$128Frontier
Wed, Feb 18 - Wed, Feb 25
Frontier Logo
8:17 pm - 8:07 am
STL
-
DTW
10h 50m
1 stop
Frontier Logo
12:22 pm - 11:59 pm
DTW
-
STL
12h 37m
1 stop
$139Frontier
Wed, Feb 18 - Mon, Feb 23
Frontier Logo
3:49 pm - 8:57 am
STL
-
DTW
16h 08m
1 stop
Frontier Logo
8:30 am - 3:53 pm
DTW
-
STL
8h 23m
1 stop
$147Frontier
Tue, Feb 17 - Wed, Feb 25
Frontier Logo
2:51 pm - 11:55 pm
STL
-
DTW
8h 04m
1 stop
Frontier Logo
8:30 am - 3:53 pm
DTW
-
STL
8h 23m
1 stop
$150Frontier
Sat, Feb 14 - Wed, Feb 18
Frontier Logo
2:51 pm - 11:55 pm
STL
-
DTW
8h 04m
1 stop
Frontier Logo
10:00 pm - 6:51 am
DTW
-
STL
9h 51m
1 stop
$151Frontier
Sat, Feb 21 - Fri, Feb 27
Frontier Logo
8:20 pm - 8:32 am
STL
-
DTW
11h 12m
1 stop
Frontier Logo
8:30 am - 3:53 pm
DTW
-
STL
8h 23m
1 stop
$152Frontier
Fri, Feb 20 - Wed, Feb 25
Frontier Logo
2:51 pm - 11:55 pm
STL
-
DTW
8h 04m
1 stop
Frontier Logo
5:06 pm - 6:51 am
DTW
-
STL
14h 45m
1 stop
$156Frontier
Sat, Feb 21 - Sun, Feb 22
Multiple Airlines Logo
8:22 pm - 11:07 pm
STL
-
DTW
25h 45m
1 stop
Multiple Airlines Logo
8:30 am - 3:53 pm
DTW
-
STL
8h 23m
1 stop
$157Multiple Airlines
Mon, Feb 16 - Wed, Feb 25
Frontier Logo
3:49 pm - 8:57 am
STL
-
DTW
16h 08m
1 stop
Frontier Logo
6:00 am - 1:09 pm
DTW
-
STL
8h 09m
1 stop
$158Frontier
Tue, Feb 17 - Mon, Feb 23
Frontier Logo
8:17 pm - 8:07 am
STL
-
DTW
10h 50m
1 stop
Frontier Logo
10:00 pm - 6:51 am
DTW
-
STL
9h 51m
1 stop
$159Frontier
Wed, Feb 18 - Fri, Feb 27

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
Feb 18
STL8:17 pmLambert-St Louis
10h 50m
1 stop
DTW8:07 amDetroit Metropolitan Wayne County
Feb 25
DTW8:30 amDetroit Metropolitan Wayne County
8h 23m
1 stop
STL3:53 pmLambert-St Louis
$128
Frontier
Feb 18
STL8:17 pmLambert-St Louis
10h 50m
1 stop
DTW8:07 amDetroit Metropolitan Wayne County
Feb 23
DTW12:22 pmDetroit Metropolitan Wayne County
12h 37m
1 stop
STL11:59 pmLambert-St Louis
$139
Frontier
Feb 17
STL3:49 pmLambert-St Louis
16h 08m
1 stop
DTW8:57 amDetroit Metropolitan Wayne County
Feb 25
DTW8:30 amDetroit Metropolitan Wayne County
8h 23m
1 stop
STL3:53 pmLambert-St Louis
$147

United Airlines flights from St. Louis to Detroit Metropolitan Wayne County Airport

Our best United Airlines deals on St. Louis to Detroit Metropolitan Wayne County Airport flight tickets
United Airlines
Feb 10
STL11:22 amLambert-St Louis
7h 14m
1 stop
DTW7:36 pmDetroit Metropolitan Wayne County
Feb 11
DTW7:15 amDetroit Metropolitan Wayne County
4h 47m
1 stop
STL11:02 amLambert-St Louis
$169
United Airlines
Feb 18
STL9:55 amLambert-St Louis
4h 30m
1 stop
DTW3:25 pmDetroit Metropolitan Wayne County
Feb 25
DTW9:10 amDetroit Metropolitan Wayne County
4h 11m
1 stop
STL12:21 pmLambert-St Louis
$209
United Airlines
Jan 27
STL6:40 pmLambert-St Louis
4h 04m
1 stop
DTW11:44 pmDetroit Metropolitan Wayne County
Jan 31
DTW2:07 pmDetroit Metropolitan Wayne County
4h 36m
1 stop
STL5:43 pmLambert-St Louis
$505

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 January 14, 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

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Wed 2/18

8:17 pm-8:07 am

1 stop10h 50m

Detroit Metropolitan Wayne County

Wed 2/25

8:30 am-3:53 pm

1 stop8h 23m

$128

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Wed 2/18

8:17 pm-8:07 am

1 stop10h 50m

Detroit Metropolitan Wayne County

Mon 2/23

12:22 pm-11:59 pm

1 stop12h 37m

$139

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Tue 2/17

3:49 pm-8:57 am

1 stop16h 08m

Detroit Metropolitan Wayne County

Wed 2/25

8:30 am-3:53 pm

1 stop8h 23m

$147

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

8:30 am-3:53 pm

1 stop8h 23m

$150

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Sat 2/21

2:51 pm-11:55 pm

1 stop8h 04m

Detroit Metropolitan Wayne County

Fri 2/27

10:00 pm-6:51 am

1 stop9h 51m

$151

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Fri 2/20

8:20 pm-8:32 am

1 stop11h 12m

Detroit Metropolitan Wayne County

Wed 2/25

8:30 am-3:53 pm

1 stop8h 23m

$152

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Sat 2/21

2:51 pm-11:55 pm

1 stop8h 04m

Detroit Metropolitan Wayne County

Sun 2/22

5:06 pm-6:51 am

1 stop14h 45m

$156

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Mon 2/16

8:22 pm-11:07 pm

1 stop25h 45m

Detroit Metropolitan Wayne County

Wed 2/25

8:30 am-3:53 pm

1 stop8h 23m

$157

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Tue 2/17

3:49 pm-8:57 am

1 stop16h 08m

Detroit Metropolitan Wayne County

Mon 2/23

6:00 am-1:09 pm

1 stop8h 09m

$158

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Wed 2/18

8:17 pm-8:07 am

1 stop10h 50m

Detroit Metropolitan Wayne County

Fri 2/27

10:00 pm-6:51 am

1 stop9h 51m

$159

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 $316. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average ticket price to Detroit Metropolitan Wayne County Airport on Wednesday is $750.

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 $261 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 $840. 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 $284 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?

You could potentially save up to 26% on your flight if you consider stops on a St. Louis to Detroit Metropolitan Wayne County Airport flight.

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

As of January 2026, prices for St. Louis to Detroit Metropolitan Wayne County Airport flights are approximately 33% more expensive 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

$239

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 $239. The best round-trip flight deal from St. Louis to Detroit Metropolitan Wayne County Airport found on momondo in the last 72 hours is $411.
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
8,309 reviews
Search Spirit Airlines flights
DeltaPriceFrom $119Free CancellationRating
7.9
8,040 reviews
Search Delta flights
SouthwestPriceFrom $119Free CancellationRating
8.0
4,257 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 4 times per week, with 4,257 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 $271 for Southwest flights on this route.

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

    Delta (7.9/10 from 8,040 reviews) operates around 18 flights from St. Louis to Detroit Metropolitan Wayne County Airport in any given week. The average Delta airfare for this route is around $298, with deals from around $119 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
Troy
Dearborn
Romulus
Southfield
Monroe
Novi
Livonia
Port Clinton
Roseville
Port Huron
Sterling Heights
Brighton
Ypsilanti
Pontiac
Dundee
Madison Heights
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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