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

Southwest and Delta 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?

106 flights are operational weekly from St. Louis to Detroit as of July 2026. The most popular departure day for this route is Mon, with 18% 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 57% 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 July 2026, there are 15 flights per day flying from St. Louis to Detroit. The most common time of day flights depart is 10:00AM, with 55% 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 July 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.

$73 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 $153 to $360. The lowest price recently found on this route was $142.

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.

4:57 pm - 12:40 am

STL

DTW

6h 43m

1 stop

6:00 am - 5:22 pm

DTW

STL

12h 22m

1 stop

$142Frontier

Wed, Aug 12 - Sun, Aug 23

4:57 pm - 12:40 am

STL

DTW

6h 43m

1 stop

6:40 pm - 5:22 pm

DTW

STL

23h 42m

1 stop

$143Frontier

Wed, Aug 12 - Wed, Aug 26

4:57 pm - 12:40 am

STL

DTW

6h 43m

1 stop

6:10 am - 8:57 am

DTW

STL

27h 47m

1 stop

$144Frontier

Fri, Aug 7 - Sun, Aug 9

4:57 pm - 9:20 am

STL

DTW

15h 23m

1 stop

8:46 pm - 5:22 pm

DTW

STL

21h 36m

1 stop

$145Frontier

Mon, Aug 17 - Thu, Aug 20

4:57 pm - 1:33 pm

STL

DTW

19h 36m

1 stop

6:10 am - 8:57 am

DTW

STL

27h 47m

1 stop

$146Frontier

Wed, Aug 12 - Sun, Aug 16

10:35 am - 12:42 am

STL

DTW

13h 07m

1 stop

3:34 pm - 9:40 am

DTW

STL

19h 06m

1 stop

$147Frontier

Fri, Sep 11 - Sun, Sep 13

6:34 pm - 4:40 pm

STL

DTW

21h 06m

1 stop

6:10 am - 8:57 am

DTW

STL

27h 47m

1 stop

$151Frontier

Sun, Aug 9 - Sun, Aug 16

4:57 pm - 1:33 pm

STL

DTW

19h 36m

1 stop

6:40 pm - 5:22 pm

DTW

STL

23h 42m

1 stop

$152Frontier

Wed, Aug 12 - Wed, Aug 19

6:17 pm - 1:04 am

STL

DTW

5h 47m

1 stop

6:00 am - 5:22 pm

DTW

STL

12h 22m

1 stop

$153Frontier

Fri, Aug 21 - Sun, Aug 23

6:17 pm - 1:04 am

STL

DTW

5h 47m

1 stop

6:40 pm - 5:22 pm

DTW

STL

23h 42m

1 stop

$154Frontier

Fri, Aug 21 - Sat, Aug 22

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Frontier flights from St. Louis to Detroit

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

Frontier

Aug 12

STL4:57 pmLambert-St Louis

6h 43m

1 stop

DTW12:40 amDetroit Metropolitan Wayne County

Aug 23

DTW6:00 amDetroit Metropolitan Wayne County

12h 22m

1 stop

STL5:22 pmLambert-St Louis

$142

Frontier

Aug 12

STL4:57 pmLambert-St Louis

6h 43m

1 stop

DTW12:40 amDetroit Metropolitan Wayne County

Aug 26

DTW6:40 pmDetroit Metropolitan Wayne County

23h 42m

1 stop

STL5:22 pmLambert-St Louis

$143

Frontier

Aug 7

STL4:57 pmLambert-St Louis

6h 43m

1 stop

DTW12:40 amDetroit Metropolitan Wayne County

Aug 9

DTW6:10 amDetroit Metropolitan Wayne County

27h 47m

1 stop

STL8:57 amLambert-St Louis

$144

Delta flights from St. Louis to Detroit

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

Delta

Oct 17

STL6:40 amLambert-St Louis

1h 33m

DTW9:13 amDetroit Metropolitan Wayne County

Oct 19

DTW5:40 pmDetroit Metropolitan Wayne County

7h 08m

1 stop

STL11:48 pmLambert-St Louis

$238

Delta

Aug 17

STL6:25 pmLambert-St Louis

1h 35m

DTW9:00 pmDetroit Metropolitan Wayne County

Aug 20

DTW8:05 pmDetroit Metropolitan Wayne County

1h 37m

STL8:42 pmLambert-St Louis

$239

Delta

Jul 31

STL6:30 amLambert-St Louis

1h 34m

DTW9:04 amDetroit Metropolitan Wayne County

Aug 2

DTW12:28 pmDetroit Metropolitan Wayne County

1h 37m

STL1:05 pmLambert-St Louis

$445

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

Fri 8/7

4:57 pm-12:40 am

1 stop6h 43m

Detroit Metropolitan Wayne County

Sun 8/9

6:10 am-8:57 am

1 stop27h 47m

$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

Wed 8/12

4:57 pm-1:33 pm

1 stop19h 36m

Detroit Metropolitan Wayne County

Sun 8/16

6:10 am-8:57 am

1 stop27h 47m

$146

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

$147

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Sun 8/9

6:34 pm-4:40 pm

1 stop21h 06m

Detroit Metropolitan Wayne County

Sun 8/16

6:10 am-8:57 am

1 stop27h 47m

$151

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Wed 8/12

4:57 pm-1:33 pm

1 stop19h 36m

Detroit Metropolitan Wayne County

Wed 8/19

6:40 pm-5:22 pm

1 stop23h 42m

$152

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

Sun 8/23

6:00 am-5:22 pm

1 stop12h 22m

$153

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Fri 8/21

6:17 pm-1:04 am

1 stop5h 47m

Detroit Metropolitan Wayne County

Sat 8/22

6:40 pm-5:22 pm

1 stop23h 42m

$154

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 August. Flight prices, which tend to average around $160, are often lower during this time because this is during the off-season. If you’re not able to fly to Detroit in August, then October is your next best option. Flight prices from St. Louis to Detroit during October average around $279.

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 $481. 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 $682.

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 $307. 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 $864 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 $348 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 $243 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 July 2026, prices for St. Louis to Detroit flights are approximately 81% 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	$215
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 $215. The best round-trip flight deal from St. Louis to Detroit found on momondo in the last 72 hours is $359.

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 July 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 (24.50% of total bookings). The next most popular plane models are Boeing 737-800 Passenger/BBJ2 (winglets) (13.75%), Boeing 737 MAX 8 (12.25%), and Airbus A320-100/200 (6.00%).
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 (46% of total bookings). The next most popular airlines are Southwest (40%), JetBlue (7%), and Frontier (7%).

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
Frontier	PriceFrom $80	Free Cancellation	Rating 5.6 2,779 reviews	Search Frontier flights
Delta	PriceFrom $133	Free Cancellation	Rating 7.8 8,474 reviews	Search Delta flights
Southwest	PriceFrom $177	Free Cancellation	Rating 8.0 4,238 reviews	Search Southwest flights

Southwest Flights From St. Louis to Detroit
Southwest is one of the most popular airlines flying from St. Louis to Detroit, operating 10 flights/week on average for this route. A good Southwest flight deal for St. Louis to Detroit starts from $177 round-trip, up to an average price of $335. 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 $133 round-trip, depending on your selected dates, with average Delta deals seen on momondo around $364. Delta operates 19 flights to Detroit from St. Louis in an average week. Users have rated it 7.8/10 across 8,475 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.