What is the cheapest airline that flies from Lambert-St Louis to Detroit?

Frontier, Southwest, and American Airlines are the most popular carriers operating from Lambert-St Louis to Detroit

How many flights depart from St. Louis to Detroit on average per week?

76 flights are operational weekly from St. Louis to Detroit as of August 2025. The most popular departure day for this route is Thu, with 20% of flights per week taking off on this day.

What airlines fly to Detroit?

Delta, Southwest and Spirit Airlines are the top three most popular airlines that fly to Detroit from St. Louis according to our data. Delta is the first choice among our users, with 62% of people opting to fly with this airline when traveling to Detroit. Keep in mind that there are 3 different airlines that fly to Detroit on a routine basis, so you have a few additional options to choose from.

How many flights depart from St. Louis to Detroit on average per day?

As of August 2025, there are 10 flights per day flying from St. Louis to Detroit. The most common time of day flights depart is 10:00AM, with 65% of flights taking off at noon.

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

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

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

As of August 2025, there are 3 operators available to choose from for flights from Lambert-St Louis Airport to Detroit.

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

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.

What documentation or ID do you need to fly to Detroit?

The necessary travel and health documents for your Detroit 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.

$48 Cheap Flights from St. Louis to Detroit in 2025

Q: What is the typical price of a round-trip flight between St. Louis and Detroit?

Prices are currently low for flights on this route. Typical prices usually range from $271 to $421. The lowest price recently found on this route was $103.

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Find the cheapest flights from St. Louis to Detroit

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

8:40 pm - 4:19 pmSTL-DTW

18h 39m1 stop

5:14 pm - 9:07 amDTW-STL

16h 53m1 stop

$103Frontier

Find Deal

mié., oct. 29 - vie., oct. 31

7:55 pm - 12:46 amSTL-DTW

27h 51m1 stop

6:10 am - 9:06 amDTW-STL

27h 56m1 stop

$114Frontier

Find Deal

jue., sep. 11 - dom., sep. 14

7:55 pm - 12:46 amSTL-DTW

27h 51m1 stop

9:19 pm - 3:04 pmDTW-STL

18h 45m1 stop

$143

Find Deal

mar., sep. 16 - mié., sep. 24

4:00 pm - 8:14 amSTL-DTW

15h 14m1 stop

8:00 am - 9:06 amDTW-STL

26h 06m1 stop

$155

Find Deal

dom., sep. 28 - sáb., oct. 4

2:01 pm - 11:21 pmSTL-DTW

8h 20m1 stop

5:30 am - 1:44 pmDTW-STL

9h 14m1 stop

$183American Airlines

Find Deal

sáb., oct. 4 - jue., oct. 9

5:27 am - 11:07 amSTL-DTW

4h 40m1 stop

5:28 am - 9:26 amDTW-STL

4h 58m1 stop

$187American Airlines

Find Deal

jue., oct. 2 - dom., oct. 5

5:25 pm - 7:55 pmSTL-DTW

1h 30mnonstop

9:15 am - 9:45 amDTW-STL

1h 30mnonstop

$211Southwest

Find Deal

mar., sep. 23 - sáb., sep. 27

6:40 am - 9:13 amSTL-DTW

1h 33mnonstop

4:00 pm - 4:37 pmDTW-STL

1h 37mnonstop

$219Delta

Find Deal

mié., sep. 17 - mié., sep. 24

7:50 am - 10:20 amSTL-DTW

1h 30mnonstop

8:15 pm - 8:50 pmDTW-STL

1h 35mnonstop

$224Southwest

Find Deal

jue., sep. 25 - lun., sep. 29

5:05 pm - 10:20 pmSTL-DTW

4h 15m1 stop

8:55 am - 9:37 amDTW-STL

1h 42mnonstop

$232Delta

Find Deal

sáb., oct. 4 - mar., oct. 7

Frontier flights from St. Louis to Detroit

Our best Frontier deals on St. Louis to Detroit flight tickets

Frontier

Sep 5

STL1:57 pmLambert-St Louis

19h 48m

1 stop

DTW10:45 amDetroit Metropolitan Wayne County

Sep 7

DTW10:54 amDetroit Metropolitan Wayne County

5h 10m

1 stop

STL3:04 pmLambert-St Louis

$101

Find similar

Frontier

Oct 29

STL8:40 pmLambert-St Louis

18h 39m

1 stop

DTW4:19 pmDetroit Metropolitan Wayne County

Oct 31

DTW5:14 pmDetroit Metropolitan Wayne County

16h 53m

1 stop

STL9:07 amLambert-St Louis

$103

Find similar

Frontier

Sep 11

STL7:55 pmLambert-St Louis

27h 51m

1 stop

DTW12:46 amDetroit Metropolitan Wayne County

Sep 14

DTW6:10 amDetroit Metropolitan Wayne County

27h 56m

1 stop

STL9:06 amLambert-St Louis

$114

Find similar

Delta flights from St. Louis to Detroit

Our best Delta deals on St. Louis to Detroit flight tickets

Delta

Sep 17

STL6:40 amLambert-St Louis

1h 33m

DTW9:13 amDetroit Metropolitan Wayne County

Sep 24

DTW4:00 pmDetroit Metropolitan Wayne County

1h 37m

STL4:37 pmLambert-St Louis

$219

Find similar

Delta

Oct 4

STL5:05 pmLambert-St Louis

4h 15m

1 stop

DTW10:20 pmDetroit Metropolitan Wayne County

Oct 7

DTW8:55 amDetroit Metropolitan Wayne County

1h 42m

STL9:37 amLambert-St Louis

$232

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

mié. 10/29

8:40 pm-4:19 pm

1 stop18h 39m

Detroit Metropolitan Wayne County

vie. 10/31

5:14 pm-9:07 am

1 stop16h 53m

$103

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

jue. 9/11

7:55 pm-12:46 am

1 stop27h 51m

Detroit Metropolitan Wayne County

dom. 9/14

6:10 am-9:06 am

1 stop27h 56m

$114

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

mar. 9/16

7:55 pm-12:46 am

1 stop27h 51m

Detroit Metropolitan Wayne County

mié. 9/24

9:19 pm-3:04 pm

1 stop18h 45m

$143

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

dom. 9/28

4:00 pm-8:14 am

1 stop15h 14m

Detroit Metropolitan Wayne County

sáb. 10/4

8:00 am-9:06 am

1 stop26h 06m

$155

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

sáb. 10/4

2:01 pm-11:21 pm

1 stop8h 20m

Detroit Metropolitan Wayne County

jue. 10/9

5:30 am-1:44 pm

1 stop9h 14m

$183

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

jue. 10/2

5:27 am-11:07 am

1 stop4h 40m

Detroit Metropolitan Wayne County

dom. 10/5

5:28 am-9:26 am

1 stop4h 58m

$187

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

mar. 9/23

5:25 pm-7:55 pm

Nonstop1h 30m

Detroit Metropolitan Wayne County

sáb. 9/27

9:15 am-9:45 am

Nonstop1h 30m

$211

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

mié. 9/17

6:40 am-9:13 am

Nonstop1h 33m

Detroit Metropolitan Wayne County

mié. 9/24

4:00 pm-4:37 pm

Nonstop1h 37m

$219

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

jue. 9/25

7:50 am-10:20 am

Nonstop1h 30m

Detroit Metropolitan Wayne County

lun. 9/29

8:15 pm-8:50 pm

Nonstop1h 35m

$224

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

sáb. 10/4

5:05 pm-10:20 pm

1 stop4h 15m

Detroit Metropolitan Wayne County

mar. 10/7

8:55 am-9:37 am

Nonstop1h 42m

$232

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Detroit

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

Prices

Airlines

Other information

What is the typical price of a round-trip flight between St. Louis and Detroit?

What is the cheapest month to fly to Detroit?

The cheapest month to fly to Detroit from St. Louis is in July. Flight prices, which tend to average around $118, are often lower during this time because this is during the off-season. If you’re not able to fly to Detroit in July, then August is your next best option. Flight prices from St. Louis to Detroit during August average around $159.

What is the cheapest day to depart on your flight to Detroit?

On average, the least expensive day to fly to Detroit from St. Louis is on a Thursday. momondo users have found tickets for Thursday departures for as low as $385. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to Detroit for around $825.

What is the cheapest time of day to depart on your flight to Detroit?

In the evening is the cheapest time of day to fly from St. Louis to Detroit when you can find flight prices for as low as $235. Flying to Detroit in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $947 on average. Flights to Detroit from St. Louis at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

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

How far in advance should I book a flight to Detroit?

You are more likely to see cheaper flights to Detroit from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Detroit for around $281 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Detroit from St. Louis for as low as $140 on momondo.

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

There are 4 cabin classes available to choose from on Lambert-St Louis to Detroit 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 flights?

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

How have St. Louis to Detroit flight prices changed over time?

As of August 2025, prices for St. Louis to Detroit flights are approximately 29% cheaper when compared to flights at the same time last year.

When to book flights from St. Louis to Detroit

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Detroit according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap St. Louis to Detroit (STL to DTT) flight deals and tips

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

Best Price Found	$100
Fastest flight time	1h 29m
Direct flights	Every day
Airports in Detroit	1 airport

The best one-way flight to Detroit from St. Louis in the past 72 hours is $100. The best round-trip flight deal from St. Louis to Detroit found on momondo in the last 72 hours is $177.

The fastest flight from St. Louis to Detroit takes 1h 29m

Direct flights go from St. Louis to Detroit every day.

There is 1 airport near Detroit: Detroit Metropolitan Wayne County (DTW)

Search flight deals

How far is Lambert-St Louis to Detroit by plane?
A flight from Lambert-St Louis to Detroit will travel around 454.1 mi. Typically, this will take 1h 30m by plane in normal conditions.
When did momondo last update prices for flights from Lambert-St Louis Airport to Detroit?
Prices for flights from Lambert-St Louis Airport to Detroit were last updated today.
How many operators does momondo search for flights from Lambert-St Louis Airport to Detroit?
As of August 2025, there are 3 operators available to choose from for flights from Lambert-St Louis Airport to Detroit.
How old do you have to be to fly from Lambert-St Louis Airport to Detroit?
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.
What documentation or ID do you need to fly to Detroit?
The necessary travel and health documents for your Detroit 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?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from St. Louis to Detroit is Boeing 737-700 Passenger/BBJ1 (winglets) (17.54% of total bookings). The next most popular plane models are Boeing 717-200 (17.39%), Boeing 737 MAX 8 (11.45%), and Boeing 737-800 Passenger/BBJ2 (winglets) (9.16%).
What is the most popular airline from St. Louis to Detroit?
Based on momondo bookings for this flight route, the most popular airline on flight routes from St. Louis to Detroit is Delta (59% of total bookings). The next most popular airlines are Southwest (23%) and Spirit Airlines (19%).

Best airlines flying from St. Louis to Detroit

Compare and see reviews for airlines that fly from St. Louis to Detroit with momondo

Airline	Rating	Free Cancellation	Price
Spirit Airlines	PriceFrom $38	Free Cancellation	Rating 6.3 8,028 reviews	Search Spirit Airlines flights
Southwest	PriceFrom $119	Free Cancellation	Rating 8.0 4,242 reviews	Search Southwest flights
Delta	PriceFrom $124	Free Cancellation	Rating 7.9 7,977 reviews	Search Delta flights

Southwest Flights From St. Louis to Detroit
Southwest is one of the most popular airlines flying from St. Louis to Detroit, operating 8 flights/week on average for this route. A good Southwest flight deal for St. Louis to Detroit starts from $119 round-trip, up to an average price of $300. Our users have rated Southwest at 8.0/10.
Delta Flights From St. Louis to Detroit
Delta is also a popular choice for this route. Delta flight deals for St. Louis to Detroit start from as low as $124 round-trip, depending on your selected dates, with average Delta deals seen on momondo around $309. Delta operates 14 flights to Detroit from St. Louis in an average week. Users have rated it 7.9/10 across 7,977 reviews.

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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?

Yes. All flights to Detroit from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo provides multiple filters to help you find the best flight to Detroit from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of St. Louis to Detroit flights. All you need is a valid email address and we will do the rest; it is that quick and easy.