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

Delta and Southwest 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?

116 flights are operational weekly from St. Louis to Detroit as of June 2026. The most popular departure day for this route is Tue, with 16% of flights per week taking off on this day.

What airlines fly to Detroit?

Delta, Southwest and Frontier 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 58% 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 June 2026, there are 16 flights per day flying from St. Louis to Detroit. The most common time of day flights depart is 10:00AM, with 54% 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 June 2026, 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.

$92 Cheap Flights from St. Louis to Detroit in 2026

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 $438 to $342. The lowest price recently found on this route was $187.

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Detroit

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:34 pm - 4:40 pm

STL

DTW

21h 06m

1 stop

6:10 am - 5:37 pm

DTW

STL

12h 27m

1 stop

$187Frontier

Thu, Jul 9 - Thu, Jul 16

4:57 pm - 12:40 am

STL

DTW

6h 43m

1 stop

5:35 pm - 5:37 pm

DTW

STL

25h 02m

1 stop

$188Frontier

Wed, Jul 8 - Mon, Jul 13

6:34 pm - 12:40 am

STL

DTW

29h 06m

1 stop

2:56 pm - 8:57 am

DTW

STL

19h 01m

1 stop

$191Frontier

Tue, Jul 7 - Tue, Jul 14

5:33 pm - 12:42 am

STL

DTW

6h 09m

1 stop

2:40 pm - 5:30 pm

DTW

STL

27h 50m

1 stop

$192Frontier

Wed, Aug 19 - Sat, Aug 22

4:57 pm - 12:40 am

STL

DTW

6h 43m

1 stop

2:56 pm - 8:57 am

DTW

STL

19h 01m

1 stop

$199Frontier

Wed, Jul 22 - Thu, Jul 23

6:33 pm - 12:42 am

STL

DTW

5h 09m

1 stop

6:45 am - 5:30 pm

DTW

STL

11h 45m

1 stop

$200Frontier

Thu, Aug 20 - Tue, Aug 25

4:57 pm - 1:33 pm

STL

DTW

19h 36m

1 stop

5:35 pm - 8:57 am

DTW

STL

16h 22m

1 stop

$202Frontier

Sat, Jul 18 - Fri, Jul 24

5:06 pm - 1:44 pm

STL

DTW

19h 38m

1 stop

6:10 am - 8:57 am

DTW

STL

27h 47m

1 stop

$203Frontier

Fri, Jul 3 - Fri, Jul 10

6:33 pm - 12:42 am

STL

DTW

5h 09m

1 stop

5:40 pm - 5:30 pm

DTW

STL

24h 50m

1 stop

$204Frontier

Thu, Aug 20 - Mon, Aug 24

7:40 pm - 10:15 pm

STL

DTW

1h 35mnonstop

6:30 pm - 7:05 pm

DTW

STL

1h 35mnonstop

$209Southwest

Wed, Jul 15 - Wed, Jul 22

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Southwest flights from St. Louis to Detroit

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

Southwest

Jul 15

STL7:40 pmLambert-St Louis

1h 35m

DTW10:15 pmDetroit Metropolitan Wayne County

Jul 22

DTW6:30 pmDetroit Metropolitan Wayne County

1h 35m

STL7:05 pmLambert-St Louis

$209

Southwest

Jun 30

STL5:40 amLambert-St Louis

3h 20m

1 stop

DTW10:00 amDetroit Metropolitan Wayne County

Jun 30

DTW6:30 pmDetroit Metropolitan Wayne County

1h 35m

STL7:05 pmLambert-St Louis

$219

Southwest

Jul 15

STL7:40 pmLambert-St Louis

1h 35m

DTW10:15 pmDetroit Metropolitan Wayne County

Jul 22

DTW1:25 pmDetroit Metropolitan Wayne County

8h 05m

2 stops

STL8:30 pmLambert-St Louis

$224

Frontier flights from St. Louis to Detroit

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

Frontier

Jul 9

STL6:34 pmLambert-St Louis

21h 06m

1 stop

DTW4:40 pmDetroit Metropolitan Wayne County

Jul 16

DTW6:10 amDetroit Metropolitan Wayne County

12h 27m

1 stop

STL5:37 pmLambert-St Louis

$187

Frontier

Jul 8

STL4:57 pmLambert-St Louis

6h 43m

1 stop

DTW12:40 amDetroit Metropolitan Wayne County

Jul 13

DTW5:35 pmDetroit Metropolitan Wayne County

25h 02m

1 stop

STL5:37 pmLambert-St Louis

$188

Frontier

Jul 7

STL6:34 pmLambert-St Louis

29h 06m

1 stop

DTW12:40 amDetroit Metropolitan Wayne County

Jul 14

DTW2:56 pmDetroit Metropolitan Wayne County

19h 01m

1 stop

STL8:57 amLambert-St Louis

$191

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Thu 7/9

6:34 pm-4:40 pm

1 stop21h 06m

Detroit Metropolitan Wayne County

Thu 7/16

6:10 am-5:37 pm

1 stop12h 27m

$187

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Wed 7/8

4:57 pm-12:40 am

1 stop6h 43m

Detroit Metropolitan Wayne County

Mon 7/13

5:35 pm-5:37 pm

1 stop25h 02m

$188

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Tue 7/7

6:34 pm-12:40 am

1 stop29h 06m

Detroit Metropolitan Wayne County

Tue 7/14

2:56 pm-8:57 am

1 stop19h 01m

$191

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Wed 8/19

5:33 pm-12:42 am

1 stop6h 09m

Detroit Metropolitan Wayne County

Sat 8/22

2:40 pm-5:30 pm

1 stop27h 50m

$192

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Wed 7/22

4:57 pm-12:40 am

1 stop6h 43m

Detroit Metropolitan Wayne County

Thu 7/23

2:56 pm-8:57 am

1 stop19h 01m

$199

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Thu 8/20

6:33 pm-12:42 am

1 stop5h 09m

Detroit Metropolitan Wayne County

Tue 8/25

6:45 am-5:30 pm

1 stop11h 45m

$200

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Sat 7/18

4:57 pm-1:33 pm

1 stop19h 36m

Detroit Metropolitan Wayne County

Fri 7/24

5:35 pm-8:57 am

1 stop16h 22m

$202

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Fri 7/3

5:06 pm-1:44 pm

1 stop19h 38m

Detroit Metropolitan Wayne County

Fri 7/10

6:10 am-8:57 am

1 stop27h 47m

$203

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Thu 8/20

6:33 pm-12:42 am

1 stop5h 09m

Detroit Metropolitan Wayne County

Mon 8/24

5:40 pm-5:30 pm

1 stop24h 50m

$204

Quickest round-trip

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Wed 7/15

7:40 pm-10:15 pm

Nonstop1h 35m

Detroit Metropolitan Wayne County

Wed 7/22

6:30 pm-7:05 pm

Nonstop1h 35m

$209

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 September. Flight prices, which tend to average around $27, are often lower during this time because this is during the off-season. If you’re not able to fly to Detroit in September, then August is your next best option. Flight prices from St. Louis to Detroit during August average around $27.

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 Friday. momondo users have found tickets for Friday departures for as low as $482. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to Detroit for around $704.

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 $276. 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 $847 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 from St. Louis 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 $316 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 $150 on momondo.

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

There are 4 cabin classes available to choose from on 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 June 2026, prices for St. Louis to Detroit flights are approximately 106% more expensive 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	$193
Fastest flight time	1h 25m
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 $193. The best round-trip flight deal from St. Louis to Detroit found on momondo in the last 72 hours is $350.

The fastest flight from St. Louis to Detroit takes 1h 25m

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

There is 1 airport in Detroit. From St. Louis there are direct flights to Detroit Metropolitan Wayne County (DTW).

Search flight deals

Frequently asked questions about flying from St. Louis to Detroit

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 25m 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 June 2026, 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 717-200 (25.06% of total bookings). The next most popular plane models are Boeing 737 MAX 8 (18.73%), Canadair (Bombardier) Regional Jet 900 (12.65%), and Boeing 737-800 Passenger/BBJ2 (winglets) (10.95%).
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 (55% of total bookings). The next most popular airlines are Southwest (38%) and JetBlue (8%).

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
Delta	PriceFrom $75	Free Cancellation	Rating 7.9 8,393 reviews	Search Delta flights
Frontier	PriceFrom $80	Free Cancellation	Rating 5.6 2,899 reviews	Search Frontier flights
Southwest	PriceFrom $119	Free Cancellation	Rating 7.9 4,237 reviews	Search Southwest flights

Delta Flights From St. Louis to Detroit
Delta is one of the most popular airlines flying from St. Louis to Detroit, operating 22 flights/week on average for this route. A good Delta flight deal for St. Louis to Detroit starts from $75 round-trip, up to an average price of $331. Our users have rated Delta at 7.9/10.
Southwest Flights From St. Louis to Detroit
Southwest is also a popular choice for this route. Southwest flight deals for St. Louis to Detroit start from as low as $119 round-trip, depending on your selected dates, with average Southwest deals seen on momondo around $306. Southwest operates 11 flights to Detroit from St. Louis in an average week. Users have rated it 7.9/10 across 4,237 reviews.

Roseville

Port Huron

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.