STL - DTW

$61 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 2/28. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$133
Overall average: $385
Frontier
Sat 2/28Wed 3/4
STL - DTW • 1 stop
Cheapest non-stop
$206
Typical prices: $275-$493
Southwest
Mon 3/9Wed 3/11
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 $133 (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 69% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
August
Cheapest • 51% 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

Sat, Feb 28 - Wed, Mar 4
Frontier Logo
2:51 pm - 11:55 pm
STL
-
DTW
8h 04m
1 stop
Frontier Logo
8:30 am - 3:53 pm
DTW
-
STL
8h 23m
1 stop
$133Frontier
Sat, Feb 28 - Tue, Mar 3
Multiple Airlines Logo
2:51 pm - 11:55 pm
STL
-
DTW
8h 04m
1 stop
Multiple Airlines Logo
2:35 pm - 6:51 am
DTW
-
STL
17h 16m
1 stop
$135Multiple Airlines
Sat, Feb 28 - Thu, Mar 5
Multiple Airlines Logo
2:51 pm - 11:55 pm
STL
-
DTW
8h 04m
1 stop
Multiple Airlines Logo
2:35 pm - 11:49 am
DTW
-
STL
22h 14m
1 stop
$137Multiple Airlines
Wed, Feb 25 - Mon, Mar 2
Frontier Logo
8:17 pm - 8:07 am
STL
-
DTW
10h 50m
1 stop
Frontier Logo
6:00 am - 1:09 pm
DTW
-
STL
8h 09m
1 stop
$138Frontier
Sat, Feb 28 - Tue, Mar 3
Multiple Airlines Logo
2:51 pm - 11:55 pm
STL
-
DTW
8h 04m
1 stop
Multiple Airlines Logo
6:00 am - 10:27 pm
DTW
-
STL
17h 27m
2 stops
$139Multiple Airlines
Fri, Feb 27 - Wed, Mar 4
Frontier Logo
8:22 pm - 8:32 am
STL
-
DTW
11h 10m
1 stop
Frontier Logo
8:30 am - 3:53 pm
DTW
-
STL
8h 23m
1 stop
$142Frontier
Wed, Feb 25 - Fri, Feb 27
Frontier Logo
8:17 pm - 8:07 am
STL
-
DTW
10h 50m
1 stop
Frontier Logo
10:00 pm - 6:51 am
DTW
-
STL
9h 51m
1 stop
$143Frontier
Wed, Feb 25 - Tue, Mar 3
Multiple Airlines Logo
8:17 pm - 8:07 am
STL
-
DTW
10h 50m
1 stop
Multiple Airlines Logo
2:35 pm - 6:51 am
DTW
-
STL
17h 16m
1 stop
$144Multiple Airlines
Sat, Feb 28 - Sun, Mar 1
Frontier Logo
2:51 pm - 11:55 pm
STL
-
DTW
8h 04m
1 stop
Frontier Logo
5:06 pm - 6:51 am
DTW
-
STL
14h 45m
1 stop
$146Frontier
Wed, Feb 25 - Thu, Mar 5
Multiple Airlines Logo
8:17 pm - 8:07 am
STL
-
DTW
10h 50m
1 stop
Multiple Airlines Logo
2:35 pm - 11:49 am
DTW
-
STL
22h 14m
1 stop
$149Multiple Airlines
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, Thursday 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 February, where the average cost of round-trip tickets is $388 and $385 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 $409, 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 69% 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.
Our travel experts
Blane Bachelor

Blane Bachelor

Expert on KLM and Southwest

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.

Stefanie Waldek

Stefanie Waldek

Expert on Delta

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.

Ramsey Qubein

Ramsey Qubein

Expert on DTW

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.

Yulia Denisyuk

Yulia Denisyuk

Expert on STL

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.

Good to know

Low seasonDecember
Cheapest flight$61
Best time to beat the crowds but there is an average 30% increase in price.
Most popular time to fly and prices are also 52% 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 $61 for a one-way ticket and $133 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, JetBlue, American Airlines, Air Canada, Lufthansa, and Alaska Airlines.

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

    The Canadair (Bombardier) Regional Jet 900 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 $273 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 $298 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 $233 or less one-way and $425 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 4273 reviews
8.6Crew
8.1Boarding
7.0Food
8.0Comfort
7.5Entertainment
Airline reviews

WIFI was great. My selection for seating is an aisle, but during my trip, I never had an aisle seat. If we can get that corrected, I will be thrilled. No snack or drink on this flight.

10.0 ExcellentJoseph, Jan 2026
BWI - RIC
Read more Southwest reviews

WIFI was great. My selection for seating is an aisle, but during my trip, I never had an aisle seat. If we can get that corrected, I will be thrilled. No snack or drink on this flight.

WIFI was great. My selection for seating is an aisle, but during my trip, I never had an aisle seat. If we can get that corrected, I will be thrilled.

The wifi on the plane is great. The only issue that I have is that I prefer an aisle seat and on my trips this week, I was either in the middle or window. If we can work to secure aisle seating, I will be thrilled. Nice trip.

All good except once again bags took an hour at Midway Airport Happens all the time. Ridiculous

Everything went smoothly and we even arrived a little bit early.

Great vacation. Can't wait till next year for another one.

Great flight but super high price. Glad it was a business trip and not personal

On time. Friendly staff. Took to long to pre bord all the specialty groups. Cramped small plane

The seats were comfortable, and the boarding process was pretty smooth.

3 hour delay. Had to change plans and was still delayed.

Very convenient considering that is a non-stop flight, but the Aeromexico still has old model planes, so the entertainment was very poor and the space for carry-on luggage was very limited.

This long-haul international flight was the most comfortable among any of the same kind of flight operated by an American-headquartered airline - second to none!

Outdated equipment in disrepair, wifi inoperable. Broken seats, taped air vents, generally poor condition, the 717 showed its age and lack of upkeep.

My requested wheelchair never appeared. So many entertainment choices yet, I found little of interest and no internet option to search on my own. Both were minor issues.

Inexperienced boarding crew allowed too many bags on to a full flight and delayed takeoff causing a missed connection and unplanned overnight stay. There was a hotel at the airport but Delta would not pay for it offering only to shuttle me to an area hotel. Never even offerred so much as an apology by anyone working for Delta.

I have diamond medallion status and usually we are in comfort plus . We were in main this time ( which was fine ) and my husband wanted wine . I have at least 10 vouchers for drinks that are good for this year and next! The attendant would not take the picture of the voucher as proof and never came back to check as She asked me to pull it up on delta Wi-Fi. Instead my husband just used his Amex to buy the wine . Disappointing!!!

Late delayed flight delays boarding and delays leaving and delays on arrival too. Cramped plane no room no food.

Waited at the usual crowded gate at DCA where one ends up standing up because there aren't enough seats.

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.

It was smooth sailing snags we had a really smooth landing and a great flight!

The entire experience was so surprisingly pleasant. And the blocked extra seat between us was such an amazing and nice bonus. Great experience all around and I can’t wait to fly with spirit again!

Liked early boarding for disabled customers. Seat comfort could have been better, would have appreciated an empty seat between my wife and I since I suffer from arthritis, neuropathy, and spinal stenosis. Also aisle seat armrest was immobile and this made it difficult to get into and out of my seat during the flight

Flight cancelled and no alternative offered for over a week. Ruined our Christmas vacation plans

They canceled the flight at the last minute! No customer service. Unable to get another flight for 3 days!! Spirit was NO help at all!!

They canceled the flight and didn't assist in getting a new flight on any airline. I had to spend 10 hrs in the airport after getting a ticket On Delta for twice as much. I've flown Spirit many times and this was my worst experience I've had.

They cancelled my flight same day with no explanation why. They offered to rebook me but it would not be until 2 days later. I will never use them again.

It’s Spirit need I say more? Thank this little airline because without it the other airlines would raise their prices so much I wouldn’t be able to fly anywhere. It’s affordable and gets you where you need to go! I’m not flying to get a free bag of chips, y’know?

Honestly horrible. The plane on the way back was delayed 6 times with no explanation on why. When I asked for a refund or some money back because I had to miss a day of work because of the desk, they told me no. Because of how poorly it was handled I will most likely never take spirit again

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!

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

Information on your arrival and departure airports