DTW - STL

$61 Find Cheap Flights from Detroit to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Detroit to St. Louis departing on 1/24. 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 St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Detroit to St. Louis, 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 Detroit to St. Louis, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$141
Overall average: $339
Frontier
Sun 11/23Fri 12/5
DTW - STL • 1 stop
Cheapest non-stop
$217
Typical prices: $299-$430
Southwest
Tue 12/16Wed 12/17
DTW - STL • Non-stop
Our travelers' advice
AI-generated summary based on content written by travel experts
Delta's Comfort Plus seats offer extra legroom.
Southwest provides two free checked bags for families.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Frontier
Cheapest • from $141 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
6 weeks
in advance
Our data shows that travelers who book at least 6 weeks in advance save around 60% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
July
Cheapest • 55% price drop
August
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to St. Louis!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Detroit to St. Louis 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 Detroit to St. Louis

Sun, Nov 23 - Fri, Dec 5
Frontier Logo
9:01 am - 2:29 pmDTW-STL
6h 28m1 stop
Frontier Logo
9:54 am - 5:17 pmSTL-DTW
6h 23m1 stop
$141Frontier
Find Deal
Thu, Jan 29 - Sat, Jan 31
Frontier Logo
6:07 pm - 7:50 amDTW-STL
14h 43m1 stop
Frontier Logo
7:43 pm - 11:10 amSTL-DTW
14h 27m1 stop
$142Frontier
Find Deal
Mon, Dec 22 - Sun, Dec 28
Frontier Logo
6:06 pm - 9:40 amDTW-STL
16h 34m1 stop
Frontier Logo
10:57 am - 10:53 amSTL-DTW
22h 56m1 stop
$147Frontier
Find Deal
Thu, Jan 29 - Sat, Jan 31
Frontier Logo
12:35 pm - 10:33 pmDTW-STL
10h 58m2 stops
Frontier Logo
7:43 pm - 11:10 amSTL-DTW
14h 27m1 stop
$158Frontier
Find Deal
Sun, Nov 23 - Thu, Nov 27
Frontier Logo
12:28 pm - 6:58 pmDTW-STL
7h 30m1 stop
Frontier Logo
7:57 pm - 6:07 pmSTL-DTW
21h 10m1 stop
$159Frontier
Find Deal
Thu, Dec 11 - Mon, Dec 15
Multiple Airlines Logo
5:50 am - 11:07 amDTW-STL
6h 17m1 stop
Multiple Airlines Logo
10:47 am - 8:07 amSTL-DTW
20h 20m1 stop
$166Multiple Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
Multiple Airlines Logo
5:50 am - 11:07 amDTW-STL
6h 17m1 stop
Multiple Airlines Logo
10:47 am - 8:07 amSTL-DTW
20h 20m1 stop
$170Multiple Airlines
Find Deal
Sat, Dec 13 - Mon, Dec 15
United Airlines Logo
6:00 pm - 10:45 pmDTW-STL
5h 45m1 stop
United Airlines Logo
6:42 pm - 11:31 pmSTL-DTW
3h 49m1 stop
$191United Airlines
Find Deal
Tue, Dec 16 - Wed, Dec 17
Southwest Logo
6:45 pm - 7:25 pmDTW-STL
1h 40mnonstop
Southwest Logo
6:10 pm - 8:40 pmSTL-DTW
1h 30mnonstop
$217Southwest
Find Deal
Tue, Dec 16 - Wed, Dec 17
American Airlines Logo
2:11 pm - 8:24 pmDTW-STL
7h 13m1 stop
American Airlines Logo
5:05 am - 6:15 pmSTL-DTW
12h 10m1 stop
$223American Airlines
Find Deal
Booking Insights

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

Get data-powered insights and trends into flights from Detroit to St. Louis 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 Detroit to St. Louis?

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

Your flight ticket price will generally be cheaper if you fly to St. Louis on a Friday and more expensive on a Monday. On your return trip to Detroit, you should consider flying back on a Friday, and avoid Wednesdays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Detroit Metropolitan Wayne County Airport to St. Louis, 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 Detroit Metropolitan Wayne County Airport to St. Louis is July, where tickets cost $121 (return) on average. On the other hand, the most expensive months are December and November, where the average cost of round-trip tickets is $356 and $339 respectively.

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

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 $339, prices are generally cheapest when you fly direct.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Detroit Metropolitan Wayne County Airport to St. Louis, 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 Detroit Metropolitan Wayne County Airport to St. Louis, you should book around 6 weeks before departure, which saves you about 60% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Expert advice

Expert advice for your flight from Detroit to St. Louis

 
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
Delta

Delta offers free Wi-Fi for SkyMiles members on domestic flights, perfect for business travelers.


Delta's Comfort Plus seats offer up to three extra inches of legroom for added comfort.

Read more about Deltaby Stefanie Waldek
Southwest

Southwest offers free carry-on and personal item, but checked bags now incur fees.


Southwest's cancellation policy allows changes up to 10 minutes before departure for flexibility.

Read more about Southwestby Blane Bachelor
Airports
DTW

For early departures, consider staying at an airport hotel offering parking deals. This can save time and stress before your flight.

Read more about DTWby Ramsey Qubein
STL

Use MetroLink for easy access to downtown St. Louis. The Red Line connects the airport to popular areas like Delmar Loop and Central West End.

Read more about STLby Yulia Denisyuk
Our travel experts
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
Blane Bachelor

Blane Bachelor

Expert on 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
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 seasonJanuary
Cheapest flight$55
Best time to beat the crowds but there is an average 19% increase in price.
Most popular time to fly and prices are also 43% lower on average.
Flight from Detroit to St. Louis

When to book flights from Detroit to St. Louis

Are your dates flexible? Find out the best times to travel from Detroit to St. Louis 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 Detroit to St. Louis flights

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

    In the last 3 days, the lowest price for a flight from Detroit Metropolitan Wayne County Airport to St. Louis was $55 for a one-way ticket and $141 for a round-trip.

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

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

  • Which airports will I be using when flying from Detroit to St. Louis?

    Detroit airport is called Detroit Metropolitan Wayne County and the only airport in St. Louis is Lambert-St Louis.

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

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

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

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

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Detroit to St. Louis are Southwest and Delta. With an average price for the route of $297 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 $303 and an overall rating of 7.9.

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

    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 Detroit to St. Louis.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Detroit 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 Detroit to St. Louis?

    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 St. Louis with an airline and back to Detroit with another airline. Booking your flights between Detroit and STL 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 Detroit to St. Louis?

    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 St. Louis from Detroit 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 Detroit Metropolitan Wayne County Airport to St. Louis

  • Looking for a cheap flight? 25% of our users found flights on this route for $202 or less one-way and $291 or less round-trip.

Prefer to fly direct from Detroit to St. Louis?

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

Direct departures

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

Direct returns

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

Reviews of the top 4 airlines serving from Detroit to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Detroit to St. Louis. 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 Detroit to St. Louis? 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 4238 reviews
7.0Food
8.1Boarding
8.0Comfort
8.6Crew
7.5Entertainment
Airline reviews

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

8.0 ExcellentTODD, Nov 2025DAL - CMH
Read more Southwest reviews

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.

Tried watching free movie and it kept freezing so I couldn’t finish.

All was good. I just had a hard time getting connected to the WiFi/internet during the flight

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

Great flight. Outstanding Service. Southwest was able to put us on a direct flight to Denver when the connection could have been affected by a later arrival to Baltimore. The direct flight was less expensive that the flight with the connection in Baltimore.

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

Flight delayed then cancelled. Misplaced luggage. Still do not have. Rented car 1100 mile drive. I had to buy some overnight Hotels clothes toiletries gas food at my expense. Still not home. Not sure where luggage is. Over 4 hours on hold to Felta

I truly love flying with Delta. They have always treated me with the upmost respect

Our flight attendant in FIRST CLASS was one of the worst I’ve ever had. She was not at all pleasant, nor particularly good at her service.

Everything went well and was good. Nothing exceptional, but no complaints either. Cheap seats are pretty comfortable.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

The pilot would speak it was painfully load a d the crew had to know this! Maybe the were hesitant to tell him. It was just a mediocre experience and I was in Spirit first class!

My flight was cancelled last minute and I had to pay $1600 for flights, when my original flights were $300. It was a terrible experience.

Boarding was easy. I loved that they sat our family together even though we didn't pay for specific seats. I thought $5+ was a lot for pretzels and wish they had a small free snack.

The Hawaiian lady that boarded me was rude and the one help me a the ticket counter was rude

My experience was terrible. They cancelled my flight twice. They kept delaying it and leading me on, acting like the flight was going to go when it never had a chance. I missed out on valuable family time because of spirit and I won’t be flying with them again.

Prices for bags are extremely expensive and if you go higher on weight, the charge is ridiculous.

The flight was cancelled at the last minute. Will never fly Spirit again. Without a doubt the worst airline around.

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.

Was supposed to take off 8:00 last night. Got delayed till 8:00 this morning

It was a no show, so we got put in hotels for a nite. The A320 plane was very modern and flite and crew (if a pilot shows up were fine). Price was very good.

Better than expected. Staff were friendly and nice on both flights.

There was no one at the counter to assist with our check in. The app didn’t work, so I arrived at the airport with time to check in and I couldn’t because no employees were there. When I finally got someone on the phone, it was inside the 60min rule and they said I could no longer check in and they could sell me another ticket. We had to scramble and pay an additional $800 for tickets and THEN AFTER (about 60 min from my original convo with customer service and 10min after original departure time) I had boarded my new flight, there was email saying my original flight from Frontier was delayed and leaving 2hr 50min later, but I STILL wouldn’t have been able to check in. Which means customer service should have been able to see it and let me check in because I was well within my check in time. When I call Frontier, they hang up on me. So their app didn’t work and they employees left and they take zero responsibility or assistance with their “customer service”

Terrible. Flight cancelled with no reasoning and no flights to rebook. Employees were useless and did nothing to help. Did not even know where to retrieve luggage from the cancelled flight. Flyers beware.

No fault of Frontier staff: plane was very late, reached Orlando at 1 am, took a while to get luggage. Weather, gov financial shutdown impact on TSA, air controllers seemed to have multiple flights backed up. Frontier staff seemed to cope as gracefully as possible. It did reassure me that I and my new hip could adapt to travel challenges. Food/entertainment were irrelevant to my trip.

Terrible. The canceled my entire flight when I requested a refund for a trip frontier canceled trip one way.

Boarding was on time and plane departed as scheduled. There are obviously no amenities (food, drink, entertainment) on Frontier, but there also didn't seem to be any issues with luggage space either.

Inbound plane was on time and flight departed on time with no issues while boarding.

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

i was unable to check in the flight. refund requested

It was well done. It was my first time flying with them and I was nervous b/c I have heard of many cancelled and/or delray flights. Everything went smoothly.

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

Information on your arrival and departure airports