STL - DTW

$44 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 9/4. 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

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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Cheap Flight Deals 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.

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

KAYAK's recommended round-trip deals from the most popular airlines that fly from St. Louis to Detroit.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
5:45 am - 3:25 pmSTL-DTW
8h 40m1 stop
6:27 am - 2:53 pmDTW-STL
9h 26m1 stop
$183American Airlines
Find Deal
Mon, Apr 21 - Wed, Apr 23
4:57 pm - 8:00 amSTL-DTW
14h 03m1 stop
6:09 pm - 11:46 pmDTW-STL
6h 37m1 stop
$208Frontier
Find Deal
Mon, Apr 7 - Wed, Apr 9
10:10 am - 9:31 pmSTL-DTW
10h 21m1 stop
10:31 am - 6:41 pmDTW-STL
9h 10m2 stops
Thu, May 15 - Mon, May 19
6:50 am - 9:19 amSTL-DTW
1h 29mnonstop
8:46 am - 9:28 amDTW-STL
1h 42mnonstop
$245Delta
Find Deal
Mon, Apr 21 - Wed, Apr 23
2:15 pm - 4:46 pmSTL-DTW
1h 31mnonstop
7:45 pm - 11:26 pmDTW-STL
4h 41m1 stop
$255Delta
Find Deal
Thu, May 15 - Mon, May 19
9:50 am - 9:10 amSTL-DTW
22h 20m3 stops
10:31 am - 6:41 pmDTW-STL
9h 10m2 stops
Thu, May 15 - Mon, May 19
2:55 pm - 5:25 pmSTL-DTW
1h 30mnonstop
6:35 pm - 7:10 pmDTW-STL
1h 35mnonstop
$298Southwest
Find Deal
Fri, Apr 18 - Sun, Apr 20
7:30 am - 5:10 pmSTL-DTW
8h 40m2 stops
6:05 am - 11:45 amDTW-STL
6h 40m1 stop
$300Southwest
Find Deal
Fri, May 9 - Fri, May 16
5:35 pm - 11:37 pmSTL-DTW
5h 02m1 stop
5:40 am - 2:42 pmDTW-STL
10h 02m2 stops
$368United Airlines
Find Deal
Mon, Apr 21 - Wed, Apr 23
3:40 pm - 11:59 pmSTL-DTW
7h 19m2 stops
11:00 am - 2:45 pmDTW-STL
4h 45m1 stop
$372United Airlines
Find Deal
Fri, Apr 25 - Sun, Apr 27

Expert advice for your flight from St. Louis to Detroit 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.

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.

Read more about KLMby Blane Bachelor
Delta

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


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

Read more about Deltaby Stefanie Waldek
Southwest

Southwest allows two free checked bags up to 50 pounds each.


Set an alarm to check in 24 hours beforehand for a better boarding position.

Read more about Southwestby Blane Bachelor
Airports
STL

Avoid peak times at STL to skip long security lines. Early mornings and afternoons are busiest, so plan accordingly for a smoother departure.

Read more about STLby Yulia Denisyuk
DTW

For a quick exit from DTW, use the bus route to downtown, which takes about an hour. Allow extra time for rental car returns.

Read more about DTWby Ramsey Qubein
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

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 Sunday, 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 $285 (return) on average. On the other hand, the most expensive months are March and January, where the average cost of round-trip tickets is $373 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.
Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $644 on average.

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. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Good to know

Low season

January

High season

November

Cheapest flight

$44
Best time to beat the crowds but there is an average 13% increase in price.
Most popular time to fly with an average 5% increase in price.
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 $44 for a one-way ticket and $183 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?

    Delta, American Airlines, Lufthansa, and United Airlines offer inflight Wi-Fi service on the St. Louis to Detroit flight route.

  • 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, Delta or Southwest?

    The two airlines most popular with KAYAK users for flights from St. Louis to Detroit are Delta and Southwest. With an average price for the route of $324 and an overall rating of 8.0, Delta is the most popular choice. Southwest is also a great choice for the route, with an average price of $354 and an overall rating of 8.0.

  • 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.

See more FAQs

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 $196 or less one-way and $379 or less round-trip.

Prefer to fly direct from St. Louis to Detroit?

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

Air France, Delta, KLM, +4 more

Air France, Delta, +5 more

Tuesday

Air France, Delta, KLM, +4 more

Air France, Delta, +5 more

Wednesday

Air France, Delta, KLM, +4 more

Air France, Delta, +5 more

Thursday

Air France, Delta, KLM, +4 more

Air France, Delta, +5 more

Friday

Air France, Delta, KLM, +4 more

Air France, Delta, +5 more

Saturday

Air France, Delta, KLM, +4 more

Air France, Delta, +5 more

Sunday

Air France, Delta, KLM, +4 more

Air France, Delta, +5 more

See more direct flights

Direct returns

Detroit Metropolitan Wayne County to Lambert-St Louis

Monday

Aeromexico, Air France, Delta, +5 more

Aeromexico, Air France, +6 more

Tuesday

Aeromexico, Air France, Delta, +5 more

Aeromexico, Air France, +6 more

Wednesday

Aeromexico, Air France, Delta, +5 more

Aeromexico, Air France, +6 more

Thursday

Aeromexico, Air France, Delta, +5 more

Aeromexico, Air France, +6 more

Friday

Aeromexico, Air France, Delta, +5 more

Aeromexico, Air France, +6 more

Saturday

Aeromexico, Air France, Delta, +5 more

Aeromexico, Air France, +6 more

Sunday

Aeromexico, Air France, Delta, +5 more

Aeromexico, Air France, +6 more

See more direct flights
See more direct flights

Top 4 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
8.2Boarding
8.6Crew
8.1Comfort
7.1Food
7.6Entertainment
Airline reviews

Short flight with plenty of open seats. Drinks and snacks were still provided even on such a short flight. <1 hr

10.0 ExcellentMatthew, Mar 2025BWI - CMH
Read more Southwest reviews

Short flight with plenty of open seats. Drinks and snacks were still provided even on such a short flight. <1 hr

I liked the crew member who gave flight instructions on "in case of a problem:. The seats are so small that only a young teenager could sit in middle seat.

Great experience flying Southwest. The crew was really kind and helpful, and very friendly with our toddler.

Very good. Sad to learn Southwest is going start to charge for bags

Our flight was diverted from being a non-stop to getting within 150 miles and requiring another plane. We heard 4 or 5 different versions from SW as to why we had to stop, then wait for a replacement plane. Five hour delay, weather did not come up as a single excuse.... communication was not clear and well explained. No one really took charge!

My flight to Chicago left and landed early. My return flight left two minutes late and arrived 2 minutes late. My seat selections were ideal! There were no snacks going to Chicago and no snacks on the return trip. There are no charging outlets on board.

WiFi on the flight was not working. Thus, entertainment options were limited.

Great flight staff. Ease of boarding. Overall, very uneventful and easy trip.

Plane late from DC to Austin 30 minutes. Crew made up much of the time enroute to San Diego.

Gate agents were informative and friendly… flight attendants were as well. Had a fun time chatting about their legacy AirTran experiences as a former fan of the airline that Southwest acquired.

Lower number on this flight so spaced out passengers. Able to enjoy more room to relax during flight. It was lovely.

Broken jer bridge. Poor communication about it. Lost 2 of 4 luggage pieces

Coach seating is debilitating, neither my husband or I can walk the following day

Extremely dosappoontined and frustrated. Refused entry to lounge in Detroit despite having Delta AMEX Reserve linked in MyDelta phone app as revommended and also having proof of account. No pillows were available for overnight flight to AMS and breakfast was not served in Delta Comfort.

I liked the screens in the seat headrest with movies to watch. I didn’t like being forced to check my carryon bag and being told there wasn’t room for my bag - when there were 5 bins sitting empty on takeoff. I didn’t like the “I don’t give a fig” attitude of the flight attendants and the delta gate attendants when I asked why they decided to put me out. They gave me a 1800 number to call but I can’t get a live person on the phone. Customer service is non existent. My business must not be that important to them.

The airplanes were so old and out-dated it was terrifying to fly on them.

It was very good. Our flight was delayed and we as a result missed our connecting flight but rescheduled to the next day. The Need Help staff was so great and offered us compensation that was beyond satisfactory.

Like all flights, the seats are small and not comfortable. My first leg was delayed but delta rebooked 2nd leg so my arrival at final destination was only 2 hours later than original flight.

Love delta but the delays and long waits for updates was just too much this time.

Flight was 3 hours late so only had an OK experience

The flight was initially delayed, then cancelled. American Airlines says the cancellation was weather related, though the actual weather was not bad in both Washington and Providence and between. There were very few cancellations that day. In fact, AA2120 from Washington, DC to Boston flew with a minor delay at about the same time. So, the weather somehow affected only this particular flight AA5230. The next available flight was the following morning. The American Airlines refused to reimburse accommodation (hotel at DCA)

I have long legs, my foot was out in the aisle and when a flight attendant came walking by and I didn't notice, instead of saying "excuse me" or anything like that, she kicked my foot. Extremely rude

One bottle of water and a package of cookies for comfort plus. We had to literally beg a flight attendant for an extra bottle of water later in the flight due to feeling dehydrated.

Fine. On time, cabin service was fine, bag arrived. All good. Flying into DCA so did not collide with any helicopters, which is also good. Horrid incident that could have and should have been prevented.

Cabin was roomy enough to easily slide my carry on under the seat in front of me!

Everything was fine. Flight boarded and departed on time. Seating was spacious enough for my carryon to fit under the seat in front of me. No complaints at all. Flight even arrived early.

We kept being told that the flight was full and that all overhead compartments were full and therefore had to check in our hand luggage. We were some of the last people to board and noticed that there was still sufficient space in the overhead compartments. We were obliged to check in hand luggage when there was space and so had to wait at luggage retrieval which took a while to then noticed damage to our luggage - not a great experience!

Crew professional. Easy bag drop off. On time. Good entertainment.

I liked everything. Except that my neck was hurting on the seat. I couldn't sleep.

Good experience but the snacks are not gluten free, so I cannot eat them.

They switched my flight to Spirit, Never using Kayak again,

i was denied boarding, even though i had an assigned seat, checked in on line and was at airport early. Then they refused to fully refund the the fair and replacement fair because they claimed it was "no show/denied boarding". I will never fly this airline again

I was not permitted on my flight and had to purchase another flight ticket to Las Vegas.

This was a full flight and I was in Zone 1, however upon boarding, several other zones went in ahead of me, leaving no overhead cabin space near my seat. This created a challenging disembarkment process.

Frontier had yet another flight cancellation. Have never made a complete round trip with this airline without at least one leg getting cancelled. Miserable flights - dirty, uncomfortable planes that apparently always have issues since I've had multiple delays and cancellations with them.

Flight was delayed 3 times, would have been nice to have received text message instead of email notifications. Frontier app wasn’t even updated accordingly, no gate number disclosed. No agent at front desk of gate to inform of delay. Very confused and left if the dark

It was a no frills flight. Would have liked to be able to charge my device

The flight itself was ok and the pilot was very communicative. However, our flight was delayed for almost 3 hours, the gate was changed 3 times and there was no communication as we were waiting. The flight staff was overall a little crabby...I understand as they probably had a long day but we all did.

Asked for a seat change to be w my wife at the gate they were great in sorting it out to make it happen

Everything went as planned. Crew was great. Seats were still not that comfortable.

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

Information on your arrival and departure airports

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