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Cheap flights from St. Louis to Detroit from $44

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 7/4. 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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Find the cheapest flights from St. Louis to Detroit

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from St. Louis to Detroit.
8:44 am - 11:21 amSTL-DTW
1h 37mnonstop
7:00 am - 7:49 amDTW-STL
1h 49mnonstop
$90Spirit Airlines
Find Deal
Fri, Sep 12 - Sun, Sep 14
8:44 am - 11:21 amSTL-DTW
1h 37mnonstop
7:00 am - 7:49 amDTW-STL
1h 49mnonstop
$92Spirit Airlines
Find Deal
Fri, Sep 12 - Sun, Sep 14
4:07 pm - 1:43 pmSTL-DTW
20h 36m1 stop
12:54 pm - 12:06 amDTW-STL
12h 12m1 stop
$165Frontier
Find Deal
Thu, May 1 - Sun, May 4
5:41 pm - 8:57 amSTL-DTW
14h 16m1 stop
2:29 pm - 10:01 amDTW-STL
20h 32m1 stop
$168Frontier
Find Deal
Sat, Apr 26 - Sun, Apr 27
2:55 pm - 5:25 pmSTL-DTW
1h 30mnonstop
12:40 pm - 1:15 pmDTW-STL
1h 35mnonstop
$245Southwest
Find Deal
Thu, Apr 24 - Mon, Apr 28
2:55 pm - 5:25 pmSTL-DTW
1h 30mnonstop
4:35 pm - 10:45 pmDTW-STL
7h 10m1 stop
$255Southwest
Find Deal
Thu, Apr 24 - Mon, Apr 28
6:45 am - 9:17 amSTL-DTW
1h 32mnonstop
8:11 pm - 8:49 pmDTW-STL
1h 38mnonstop
$258Delta
Find Deal
Fri, May 16 - Wed, May 21
10:45 am - 1:15 pmSTL-DTW
1h 30mnonstop
12:45 pm - 1:19 pmDTW-STL
1h 34mnonstop
$271Delta
Find Deal
Wed, May 14 - Thu, May 15
5:00 am - 9:52 amSTL-DTW
3h 52m1 stop
5:43 pm - 10:45 pmDTW-STL
6h 02m1 stop
$277American Airlines
Find Deal
Fri, May 16 - Wed, May 21
5:12 am - 11:17 amSTL-DTW
5h 05m1 stop
5:00 am - 9:54 amDTW-STL
5h 54m1 stop
$291American Airlines
Find Deal
Sun, May 18 - Wed, May 21

Southwest flights from St. Louis to Detroit

Our best Southwest deals on St. Louis to Detroit flight tickets
Southwest
Apr 24
STL2:55 pmLambert-St Louis
1h 30m
DTW5:25 pmDetroit Metropolitan Wayne County
Apr 28
DTW12:40 pmDetroit Metropolitan Wayne County
1h 35m
STL1:15 pmLambert-St Louis
Southwest
Apr 24
STL2:55 pmLambert-St Louis
1h 30m
DTW5:25 pmDetroit Metropolitan Wayne County
Apr 28
DTW4:35 pmDetroit Metropolitan Wayne County
7h 10m
1 stop
STL10:45 pmLambert-St Louis
Southwest
May 14
STL8:10 amLambert-St Louis
1h 30m
DTW10:40 amDetroit Metropolitan Wayne County
May 15
DTW5:55 pmDetroit Metropolitan Wayne County
7h 10m
1 stop
STL12:05 amLambert-St Louis

Frontier flights from St. Louis to Detroit

Our best Frontier deals on St. Louis to Detroit flight tickets
Frontier
May 1
STL4:07 pmLambert-St Louis
20h 36m
1 stop
DTW1:43 pmDetroit Metropolitan Wayne County
May 4
DTW12:54 pmDetroit Metropolitan Wayne County
12h 12m
1 stop
STL12:06 amLambert-St Louis
Frontier
Apr 26
STL5:41 pmLambert-St Louis
14h 16m
1 stop
DTW8:57 amDetroit Metropolitan Wayne County
Apr 27
DTW2:29 pmDetroit Metropolitan Wayne County
20h 32m
1 stop
STL10:01 amLambert-St Louis
Frontier
Apr 18
STL6:51 pmLambert-St Louis
17h 29m
1 stop
DTW1:20 pmDetroit Metropolitan Wayne County
Apr 20
DTW2:35 pmDetroit Metropolitan Wayne County
19h 31m
1 stop
STL9:06 amLambert-St Louis

See travel insights to Detroit from

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

What is the cheapest month to fly to Detroit?

The cheapest month to fly to Detroit from St. Louis is in June. Flight prices, which tend to average around $281, are often lower during this time because this is during the off-season. If you’re not able to fly to Detroit in June, then May is your next best option. Flight prices from St. Louis to Detroit during May average around $299.

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 $558. 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 $934.

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 $311. 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 $1,059 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 21 weeks ahead of your departure date. In general, you can expect to find flights to Detroit for around $329 when searching 21 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 $256 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.

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

As of March 2025, prices for St. Louis to Detroit flights are approximately 7% 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

$44

Fastest flight time

1h 26m

Direct flights

Mon, Tue, Wed, Thu, Fri and Sat

Airports in Detroit

1 airport
The best one-way flight to Detroit from St. Louis in the past 72 hours is $44. The best round-trip flight deal from St. Louis to Detroit found on momondo in the last 72 hours is $90.
The fastest flight from St. Louis to Detroit takes 1h 26m
Direct flights go from St. Louis to Detroit on Monday, Tuesday, Wednesday, Thursday, Friday and Saturday. Airlines offering direct flights are: Southwest, Delta and Spirit Airlines.
There is 1 airport near Detroit: Detroit Metropolitan Wayne County (DTW)

  • 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 28m 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?

  • 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?

  • What is the most popular airline from St. Louis to Detroit?


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
FrontierPriceFrom $140Free CancellationRating
6.0
3,276 reviews
Search Frontier flights
American AirlinesPriceFrom $201Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $239Free CancellationRating
8.0
7,899 reviews
Search Delta flights
SouthwestPriceFrom $246Free CancellationRating
8.0
4,276 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 16 flights/week on average for this route. A good Delta flight deal for St. Louis to Detroit starts from $239 round-trip, up to an average price of $323. Our users have rated Delta at 8.0/10.

  • 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 $246 round-trip, depending on your selected dates, with average Southwest deals seen on momondo around $354. Southwest operates 5 flights to Detroit from St. Louis in an average week. Users have rated it 8.0/10 across 4,275 reviews.


Traveling to a place near Detroit?

Book flights to Detroit if you plan to visit one of these locations
Port Huron
Roseville

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.


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