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

United Airlines is the most popular carrier operating from Lambert-St Louis to Detroit

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

As of January 2026, there are 9 flights per day flying from St. Louis to Detroit. The most common time of day flights depart is 10:00AM, with 81% of flights taking off at noon.

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

69 flights are operational weekly from St. Louis to Detroit as of January 2026. The most popular departure day for this route is Tue, with 17% of flights per week taking off on this day.

What airlines fly to Detroit?

Delta, Spirit Airlines and Southwest 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.

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 January 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.

$64 Cheap Flights from St. Louis to Detroit in 2026

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Find the cheapest flights from St. Louis to Detroit

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One-way

Last minute

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Cheap round-trip flights

Enter your travel dates to find the best prices.

8:17 pm - 8:07 am

STL

DTW

10h 50m

1 stop

8:30 am - 3:53 pm

DTW

STL

8h 23m

1 stop

$128Frontier

Wed, Feb 18 - Wed, Feb 25

8:17 pm - 8:07 am

STL

DTW

10h 50m

1 stop

12:22 pm - 11:59 pm

DTW

STL

12h 37m

1 stop

$139Frontier

Wed, Feb 18 - Mon, Feb 23

3:49 pm - 8:57 am

STL

DTW

16h 08m

1 stop

8:30 am - 3:53 pm

DTW

STL

8h 23m

1 stop

$147Frontier

Tue, Feb 17 - Wed, Feb 25

2:51 pm - 11:55 pm

STL

DTW

8h 04m

1 stop

8:30 am - 3:53 pm

DTW

STL

8h 23m

1 stop

$150Frontier

Sat, Feb 14 - Wed, Feb 18

2:51 pm - 11:55 pm

STL

DTW

8h 04m

1 stop

10:00 pm - 6:51 am

DTW

STL

9h 51m

1 stop

$151Frontier

Sat, Feb 21 - Fri, Feb 27

8:20 pm - 8:32 am

STL

DTW

11h 12m

1 stop

8:30 am - 3:53 pm

DTW

STL

8h 23m

1 stop

$152Frontier

Fri, Feb 20 - Wed, Feb 25

2:51 pm - 11:55 pm

STL

DTW

8h 04m

1 stop

5:06 pm - 6:51 am

DTW

STL

14h 45m

1 stop

$156Frontier

Sat, Feb 21 - Sun, Feb 22

8:22 pm - 11:07 pm

STL

DTW

25h 45m

1 stop

8:30 am - 3:53 pm

DTW

STL

8h 23m

1 stop

$157Multiple Airlines

Mon, Feb 16 - Wed, Feb 25

3:49 pm - 8:57 am

STL

DTW

16h 08m

1 stop

6:00 am - 1:09 pm

DTW

STL

8h 09m

1 stop

$158Frontier

Tue, Feb 17 - Mon, Feb 23

8:17 pm - 8:07 am

STL

DTW

10h 50m

1 stop

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

Our best Frontier deals on St. Louis to Detroit 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

Our best United Airlines deals on St. Louis to Detroit 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

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

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 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 $102, 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 July is your next best option. Flight prices from St. Louis to Detroit during July average around $118.

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 $316. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to Detroit for around $750.

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 $261. 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 $840 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 $284 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?

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

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

As of January 2026, prices for St. Louis to Detroit flights are approximately 62% 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	$239
Fastest flight time	1h 30m
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 $239. The best round-trip flight deal from St. Louis to Detroit found on momondo in the last 72 hours is $411.

The fastest flight from St. Louis to Detroit takes 1h 30m

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

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 January 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 (13.17% of total bookings). The next most popular plane models are Boeing 737 MAX 8 (12.89%), Boeing 737-700 Passenger/BBJ1 (winglets) (12.89%), and Airbus A319 (10.92%).
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 (56% of total bookings). The next most popular airlines are Spirit Airlines (24%) and Southwest (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 $41	Free Cancellation	Rating 6.3 8,309 reviews	Search Spirit Airlines flights
Delta	PriceFrom $119	Free Cancellation	Rating 7.9 8,040 reviews	Search Delta flights
Southwest	PriceFrom $119	Free Cancellation	Rating 8.0 4,257 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 4 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 $271. 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 $119 round-trip, depending on your selected dates, with average Delta deals seen on momondo around $298. Delta operates 18 flights to Detroit from St. Louis in an average week. Users have rated it 7.9/10 across 8,040 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.