STL - DTW

$62 Find Cheap Flights from St. Louis to Detroit

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Detroit departing on 2/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Detroit Metropolitan Wayne County Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Detroit, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Detroit, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$145
Overall average: $372
Frontier
Fri 1/23Thu 1/29
STL - DTW • 1 stop
Cheapest non-stop
$204
Typical prices: $332-$398
Southwest
Tue 1/27Mon 2/2
STL - DTW • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
Delta's Comfort Plus offers extra legroom on this route.
Avoid peak hours at STL for shorter security lines.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Frontier
Cheapest • from $184 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 68% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
August
Cheapest • 50% price drop
August
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Detroit!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from St. Louis to Detroit (STL-DTW)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Detroit that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Detroit

Fri, Jan 23 - Thu, Jan 29
Frontier Logo
1:03 pm - 11:59 pm
STL
-
DTW
9h 56m1 stop
Frontier Logo
3:16 pm - 11:33 pm
DTW
-
STL
9h 17m1 stop
$145Frontier
Tue, Jan 27 - Mon, Feb 2
Multiple Airlines Logo
5:42 pm - 1:52 pm
STL
-
DTW
19h 10m1 stop
Multiple Airlines Logo
3:14 pm - 11:33 pm
DTW
-
STL
9h 19m1 stop
$157Multiple Airlines
Tue, Dec 30 - Tue, Jan 6
Frontier Logo
10:48 am - 6:11 pm
STL
-
DTW
6h 23m1 stop
Frontier Logo
12:47 pm - 10:33 pm
DTW
-
STL
10h 46m1 stop
$163Frontier
Tue, Jan 27 - Mon, Feb 2
Multiple Airlines Logo
5:42 pm - 10:08 pm
STL
-
DTW
27h 26m2 stops
Multiple Airlines Logo
3:14 pm - 11:33 pm
DTW
-
STL
9h 19m1 stop
$171Multiple Airlines
Wed, Jan 28 - Sun, Feb 1
Multiple Airlines Logo
8:22 pm - 1:11 pm
STL
-
DTW
15h 49m2 stops
Multiple Airlines Logo
5:14 pm - 12:50 pm
DTW
-
STL
20h 36m1 stop
$182Multiple Airlines
Tue, Jan 13 - Tue, Jan 20
American Airlines Logo
6:00 am - 5:25 pm
STL
-
DTW
10h 25m1 stop
American Airlines Logo
11:20 am - 4:14 pm
DTW
-
STL
5h 54m1 stop
$183American Airlines
Thu, Jan 8 - Mon, Jan 12
Frontier Logo
5:11 pm - 10:46 am
STL
-
DTW
16h 35m1 stop
Frontier Logo
11:28 am - 10:33 pm
DTW
-
STL
12h 05m1 stop
$184Frontier
Fri, Jan 23 - Thu, Jan 29
Frontier Logo
1:03 pm - 11:59 pm
STL
-
DTW
9h 56m1 stop
Frontier Logo
7:14 pm - 10:23 am
DTW
-
STL
16h 09m2 stops
$186Frontier
Thu, Feb 19 - Sun, Feb 22
Frontier Logo
10:42 am - 11:40 am
STL
-
DTW
23h 58m1 stop
Frontier Logo
12:05 pm - 10:02 am
DTW
-
STL
22h 57m1 stop
$191Frontier
Thu, Jan 8 - Mon, Jan 12
Frontier Logo
5:11 pm - 10:46 am
STL
-
DTW
16h 35m1 stop
Frontier Logo
11:28 am - 10:33 pm
DTW
-
STL
12h 05m1 stop
$192Frontier
Booking Insights

KAYAK's insights & trends for St. Louis to Detroit flights

Get data-powered insights and trends into flights from St. Louis to Detroit to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from St. Louis to Detroit?

The average price of all round-trip flights from St. Louis to Detroit Metropolitan Wayne County Airport clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from St. Louis to Detroit, look for departures on Fridays and avoid leaving on a Wednesday, as it's usually the priciest day. When flying back from Detroit, Friday is the cheapest day to fly and Monday is the most expensive.

What is the cheapest month to fly from St. Louis to Detroit Metropolitan Wayne County Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Detroit Metropolitan Wayne County Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Detroit Metropolitan Wayne County Airport is August, where tickets cost $140 (return) on average. On the other hand, the most expensive months are November and January, where the average cost of round-trip tickets is $452 and $372 respectively.

Can I save money by flying with a layover from St. Louis to Detroit Metropolitan Wayne County Airport?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $397, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from St. Louis to Detroit Metropolitan Wayne County Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from St. Louis to Detroit Metropolitan Wayne County Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from St. Louis to Detroit Metropolitan Wayne County Airport, you should book around 4 weeks before departure, which saves you about 68% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Expert advice

Expert advice for your flight from St. Louis to Detroit

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
KLM

KLM offers free snacks and drinks, including wine and beer, on European routes.


KLM's Economy Standard includes one checked bag up to 50 pounds.

Delta

Delta's Comfort Plus offers up to three extra inches of legroom.


Delta offers free Wi-Fi for SkyMiles members on domestic flights.

Southwest

Southwest's free snacks and soft drinks enhance the onboard experience on all flights.


Southwest's Rapid Rewards offers unlimited rewards seats and no blackout dates.

Airports
STL

Avoid peak hours at STL to skip long security lines and crowded terminals. Consider flights outside early mornings and afternoons.

DTW

DTW offers airport ambassadors to help guide you upon arrival. They can direct you to shops, kid-friendly areas, or your gate.

Our travel experts
Blane Bachelor

Blane Bachelor

Expert on KLM and Southwest

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Stefanie Waldek

Stefanie Waldek

Expert on Delta

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on DTW

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more
Yulia Denisyuk

Yulia Denisyuk

Expert on STL

Yulia Denisyuk

Yulia Denisyuk

Yulia is a freelance journalist who’s dispatched from 90+ countries. Her work focuses on cultures, adventure trips and air travel, appearing in NatGeo, NYT, CNTraveler, and more. For past assignments, she’s stayed with nomads in Mongolia and learned the art of Imigongo in Rwanda. She’s based in Chicago; in winter she often questions that decision.

Read more

Good to know

Low seasonFebruary
Cheapest flight$62
Best time to beat the crowds but there is an average 17% increase in price.
Most popular time to fly and prices are also 51% lower on average.
Flight from St. Louis to Detroit

When to book flights from St. Louis to Detroit

Are your dates flexible? Find out the best times to travel from St. Louis to Detroit based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking St. Louis to Detroit flights

  • What is the cheapest flight from St. Louis to Detroit Metropolitan Wayne County Airport?

    In the last 3 days, the lowest price for a flight from St. Louis to Detroit Metropolitan Wayne County Airport was $62 for a one-way ticket and $145 for a round-trip.

  • Do I need a passport to fly between St. Louis and Detroit?

    A passport is not required to fly from St. Louis to Detroit.

  • Which airlines offer Wi-Fi service onboard planes from St. Louis to Detroit?

    All the following airlines offer inflight Wi-Fi service on the St. Louis to Detroit flight route: Delta, Air Canada, American Airlines, JetBlue, Lufthansa, and Alaska Airlines.

  • Which aircraft models fly most regularly from St. Louis to Detroit?

    The Boeing 717-200 is the aircraft model that flies most regularly on the St. Louis to Detroit flight route.

  • Which airline alliances offer flights from St. Louis to Detroit?

    SkyTeam is the only airline alliance operating flights between St. Louis and Detroit.

  • On which days can I fly direct from St. Louis to Detroit?

    There are nonstop flights from St. Louis to Detroit on a daily basis.

  • Which is the best airline for flights from St. Louis to Detroit, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from St. Louis to Detroit are Southwest and Delta. With an average price for the route of $275 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $299 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from St. Louis to Detroit?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Detroit.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Detroit?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Detroit from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Detroit?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Detroit with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and DTW can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Detroit?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Detroit from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from St. Louis to Detroit Metropolitan Wayne County Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $239 or less one-way and $433 or less round-trip.

Prefer to fly direct from St. Louis to Detroit?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Lambert-St Louis to Detroit Metropolitan Wayne County.
Find which airlines fly direct from Lambert-St Louis Airport to Detroit Metropolitan Wayne County Airport, which days they fly and book direct flights.

Direct departures

Lambert-St Louis to Detroit Metropolitan Wayne County

Monday

Delta, Southwest

Delta, Southwest

Tuesday

Delta, Southwest

Delta, Southwest

Wednesday

Delta, Southwest

Delta, Southwest

Thursday

Delta, Southwest

Delta, Southwest

Friday

Delta, Southwest

Delta, Southwest

Saturday

Delta, Southwest

Delta, Southwest

Sunday

Delta, Southwest

Delta, Southwest

See more direct flights

Direct returns

Detroit Metropolitan Wayne County to Lambert-St Louis

Monday

Delta, Southwest

Delta, Southwest

Tuesday

Delta, Southwest

Delta, Southwest

Wednesday

Delta, Southwest

Delta, Southwest

Thursday

Delta, Southwest

Delta, Southwest

Friday

Delta, Southwest

Delta, Southwest

Saturday

Delta, Southwest

Delta, Southwest

Sunday

Delta, Southwest

Delta, Southwest

See more direct flights

Reviews of the top 3 airlines serving from St. Louis to Detroit

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Detroit. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Detroit? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4251 reviews
8.6Crew
7.0Food
8.1Boarding
8.0Comfort
7.5Entertainment
Airline reviews

Airline travel is always too cramped to really be pleasant, but the cabin crew on this flight did a pretty good job of making up for it by putting on some music during boarding and sprinkling a few funny remarks into the safety briefing and announcements, and just generally being friendly and helpful. It definitely reminded me of why I prefer the in-flight experience on Southwest!

10.0 ExcellentDavid, Nov 2025
BUF - PHX
Read more Southwest reviews

Airline travel is always too cramped to really be pleasant, but the cabin crew on this flight did a pretty good job of making up for it by putting on some music during boarding and sprinkling a few funny remarks into the safety briefing and announcements, and just generally being friendly and helpful. It definitely reminded me of why I prefer the in-flight experience on Southwest!

No delays and arrived to destination 30 min early. Staff was super friendly.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

It was rough. The staff was unprofessional, the choice of on board drinks terrible, it was cramped in space at every airport, they always ran out of overhead bin space so they pressured people to check bags for free or we couldn’t leave on the plane— so I did check my bag to help, and they nearly lost my bag. My bag did not arrive on the luggage belt, another man on my flight and I had to waste our time going to the baggage office to search for our bags. I would only fly southwest again if it was my last choice. Also, my flights were consistently delayed over and over again— at one point they straight up told us we were waiting for the pilot to arrive.

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

Had to get off plane from prior flight even though I had to reboard same plane to continue to my final destination.

Everything a cheap airline should be at normal airline rates.

Plane crashed into a bus or some other vehicle on the ground while pulling out of the gate. No injuries, but wing tip was damaged and returned to gate for “maintenance issues” and we departed 5 hours later because the plane went out of service and new plane was flown in from a nearby airport, Midway.

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Full cans of soda would be nice. A choice between two snacks would be appreciated.

Left on time, a bit delayed due to headwinds most of the trip.

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

My experience on any Delta flight is always overshadowed by the time Delta removed me from a flight for no apparent reason.

There was no problems, just a little uncomfortable with seats that do not lay back a little

My flight was canceled after being rescheduled for four days canceling my trip. Kayak and everyone affiliated with it I.e the airlines, and just fly have been excruciating to deal with. My trip to visit family had to be canceled as there was no way to make it. I am furious at all of you.

They delayed our flight because of bad weather in NY which was completely understandable. Then they cancelled our flight and a later flight that evening. The earliest we could fly was the next morning. We ended up buying last minute tickets on another airline and made it home slightly delayed but safely that evening. Delta kept saying it was weather related but if that was the case how did we make it back on another airline? The weather in NY was cloudy but not bad.

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Boarding in Amsterdam is always chaotic. KLM/ Delta has not streamlined or made it efficient as it was boarding in Detroit . The food was mediocre The crew was unfriendly and more focused on getting things done quickly rather than service with a smile .

Everything was smoothly and convenient! Just stay in this way!

Cancelled my flight and the earliest that they are willing give me for the next flight which was 3 days later on a weekday. Only accommodation they are willing to give was $30 airline credit that will expire in 1 year

Terrible Airline I will never fly that airline again. Shame on you for recommending them.

Flight was canceled, huge lines to get baggage returned. Most other airlines had delays but not widespread cancellations like Spirit.

Very positive in both directions. Safe travels, nice staff, lost and found in fact found my phone under my chair! I was out of cash after my NYC trip otherwise I would've offered a reward for helping my day out immensly! Thanks you so much Spirit staff!

Speaker airport didn't work well, so we couldn't hear the boarding call but the plane was on time leaving and on time arriving took a while for them to open the door and there was a non-disruptive guy who was inebriated a few rows ahead of us. Overall the flight was good and we appreciate the on-time-ness

My flight was delayed several times and eventually cancelled. Then the re-booked flight for 8pm was delayed multiple times over, and eventually it would have forced me to be at the airport for 9 hours. I accepted a rebook for the following day, fortunately I was able to stay with my friend again in New York, but if I didn’t have him as a resource it would have been much more upsetting.

It was delayed, and the airport had cockroaches jumping on our bags. The flight crew was great, the seats were pretty comfortable.

Delayed due to no pilot. Per FAA policy I do believe we are to be reimbursed.

Flight was cancelled without warning close to flight date. Stuck witha credit has to buy a new ticket from another airline in either to get to location. Email cancelling was lost in mail.

Everything you need to know for your flight from St. Louis to Detroit

Information on your arrival and departure airports