DTW - STL

$82 Find Cheap Flights from Detroit to St. Louis - Compare and Save

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 7/15. 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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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$167
Typical prices: $120-$361
Frontier
Tue 7/14Sat 7/18
DTW - STL • 1 stop
Cheapest non-stop
$209
Typical prices: $120-$361
Southwest
Wed 7/1Sat 7/4
DTW - STL • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Delta adds free Wi-Fi on domestic flights; Comfort Plus gives extra legroom.
Southwest includes a carry-on; its cancellation policy allows late changes.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $167 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with Delta and Southwest. Average duration is 1h 37m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg $193 (round-trip)
Shortest trip • 4h 40m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 41% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 55% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
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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 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

Tue, Jul 14 - Sat, Jul 18
Frontier Logo
6:10 am - 5:37 pm
DTW
-
STL
12h 27m
1 stop
Frontier Logo
4:57 pm - 12:40 am
STL
-
DTW
6h 43m
1 stop
$167Frontier
Fri, Jul 17 - Fri, Jul 24
Frontier Logo
5:35 pm - 8:57 am
DTW
-
STL
16h 22m
1 stop
Frontier Logo
4:57 pm - 12:40 am
STL
-
DTW
6h 43m
1 stop
$168Frontier
Sun, Jul 19 - Fri, Jul 24
Frontier Logo
6:10 am - 8:57 am
DTW
-
STL
27h 47m
1 stop
Frontier Logo
4:57 pm - 1:44 pm
STL
-
DTW
19h 47m
1 stop
$170Frontier
Thu, Jul 23 - Thu, Jul 30
Frontier Logo
6:10 am - 8:57 am
DTW
-
STL
27h 47m
1 stop
Frontier Logo
6:34 pm - 4:40 pm
STL
-
DTW
21h 06m
1 stop
$171Frontier
Sun, Jul 12 - Fri, Jul 17
Frontier Logo
6:10 am - 5:37 pm
DTW
-
STL
12h 27m
1 stop
Frontier Logo
4:57 pm - 12:40 am
STL
-
DTW
6h 43m
1 stop
$176Frontier
Sat, Jul 25 - Thu, Jul 30
Frontier Logo
2:56 pm - 5:37 pm
DTW
-
STL
27h 41m
1 stop
Frontier Logo
6:34 pm - 4:40 pm
STL
-
DTW
21h 06m
1 stop
$183Frontier
Sun, Jul 19 - Mon, Jul 20
Frontier Logo
6:10 am - 5:37 pm
DTW
-
STL
12h 27m
1 stop
Frontier Logo
4:57 pm - 12:40 am
STL
-
DTW
6h 43m
1 stop
$190Frontier
Thu, Sep 3 - Sun, Sep 6
Frontier Logo
8:46 pm - 5:22 pm
DTW
-
STL
21h 36m
1 stop
Frontier Logo
6:17 pm - 1:04 am
STL
-
DTW
5h 47m
1 stop
$192Frontier
Wed, Sep 16 - Sun, Sep 20
Frontier Logo
3:34 pm - 9:40 am
DTW
-
STL
19h 06m
1 stop
Frontier Logo
10:35 am - 12:42 am
STL
-
DTW
13h 07m
1 stop
$198Frontier
Sun, Oct 4 - Sat, Oct 10
Frontier Logo
3:34 pm - 9:40 am
DTW
-
STL
19h 06m
1 stop
Frontier Logo
10:35 am - 12:42 am
STL
-
DTW
13h 07m
1 stop
$199Frontier
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.

How much is a round-trip flight from Detroit Metropolitan Wayne County Airport to St. Louis?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Detroit Metropolitan Wayne County Airport to St. Louis departing in July.

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 Saturday and more expensive on a Sunday. On your return trip to Detroit, you should consider flying back on a Friday, and avoid Sundays 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 August, where tickets cost $147 (return) on average. On the other hand, the most expensive months are April and February, where the average cost of round-trip tickets is $445 and $427 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 $361, 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 4 weeks before departure, which saves you about 41% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

Expert advice

Expert advice for your flight from Detroit to St. Louis

 
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
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.

Blane Bachelor

Blane Bachelor

Expert on 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.

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 seasonFebruary
Cheapest flight$82
Best time to beat the crowds but there is an average 29% increase in price.
Most popular time to fly and prices are also 56% 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 5 days, the lowest price for a flight from Detroit Metropolitan Wayne County Airport to St. Louis was $82 for a one-way ticket and $167 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, JetBlue, Aeromexico, American Airlines, and Alaska Airlines 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 $339 and an overall rating of 7.9, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $364 and an overall rating of 7.8.

  • 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 $222 or less one-way and $358 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 3 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.
7.9
SouthwestOverall score based on 4245 reviews
8.1Boarding
8.0Comfort
8.6Crew
7.0Food
7.5Entertainment
Airline reviews

I have roller bag with food and medication told me I couldn't bring on my 2nd flight today. 15 years flying with SW never an issue with that bag.

2.0 MediocreStuart, Mar 2026
HOU - STL
Read more Southwest reviews

I have roller bag with food and medication told me I couldn't bring on my 2nd flight today. 15 years flying with SW never an issue with that bag.

I have not flown Southwest in awhile and had a very pleasant experience. From ticketing to boarding to the flight. The flight left on time and landed ahead of schedule. It won't be so long next time!!

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

Boarded on time but once we were ready for take off, the crew determined that, although every seat was taken, somehow someone was on the wrong flight. Delay, delay delay, announcements and ended up with one person checking EVERY ID against their passenger Manifest only to figure out it was a "clerical error." We departed 54 minutes late causing me to run in the St. Louis Airport to make my connection and lose the priority boarding spot I had paid for. Unnecessary delay.

Southwest's seats are the least comfortable I have ever sat in.

For my birthday trip this was my second time ever flying, this trip was the best.

Crew was great flight was great baggage claim was a failure. It took over 1 hour for bags to arrive. Poor communication poor effort when I spoke to the supervisor about the delay

Everything was great except the food. The pretzels are really crappy.

I had a front row middle. I am not a big person and I barely fit in between that seat! No place to put my arms, even though the guys on each side were not taking over the arm rests. It felt like a frontier flight (if that tells you everything )

Overall is was a pretty good flight. However we were 15 mins late taking off and no one told us anything. We were all in our seats just sitting there for 15mins and all the sudden the pilot stayed we are leaving now. I think they should have at least said something after our take off time passed. Everyone was wondering what was going on. I will say the pilot did increase the speed of the plane so we arrived in time. So we weren't late.

Should never have had to go to Detroit from Orlando back to Tennessee!

Free & relatively fast Wi-Fi. Would've liked a wider drink selection.

Smooth flight. Left on time, and got in 15 minutes early. Onboard video was great

Everything went smoothly, although the usual gripes about airline travel were still present: the boarding process is inefficient, the snack selection is limited, and so on. Since there was extra space on the flight, the gate agent rearranged many people's seats to put people on the aisles and windows, leaving the middle seats empty, as much as possible, which was pretty great.

Miserable. This entire round trip was miserable. I booked evening flights to and from Detroit on consecutive days that should have had me at my destination by 10:30. Instead I arrived after 3am on my flight to Detroit and after midnight on my return. Multiple unforced errors like awaiting bags to get put on the plane for almost an hour in Detroit and a 20 minute delay to pull up to the gate in Atlanta has me rethinking my assumption that delta is the best and most reliable airline

2+hrs delay without any reason provided and a cramped flight

Flight was delayed and no reasons provided. After the passengers were boarded, the crew made announcement that the captain has jot arrived and he would take another 15 mins. All passengers patiently sat until the captain came and started. Terrible experience!

The boarding process needs to be refined. Sometimes the gate crew calls out the zones and then flip to showing the.zones boarding on the gate monitor display. So, unless you are huddled around the gate lanes watching the monitor, you could miss your boarding zone. Suggest the zones be announced each time a new zone is allowed to board.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

As we lined up to board they gave our plane to a flight going to Newark. So then we got delayed until they could find another plane. Flight crew was ok. I’m assuming since it’s a shorter flight they only offered water and coffee.

Crew was kind of grumpy and there was no beverage service at all. Sodas were $4. Disappointing.

There weren't enough employees at check in took awhile to get bags checked. There wasn't a wheel chair for me, I was sent to someone who turns out to work for a different airline, if My flight hadn't been delayed I probably would have missed my flight as it was, by the time I arrived at my gate, they started boarding in about 15 minutes. I don't know who took me to my gate, definitely was not the normal people who take passengers to the gate. I'm guessing she may have been in a management position. I wish I knew her name, she went beyond to help me. With that said everyone was kind, and were doing the best they could. So, I choose to say it was an Adventure, stressful start, but good. In the end went well. The situation was not only difficult for passengers but the employee's.

Plane was hot and miserable and the crew was rude!

They switched our terminal 3 times and we were delayed for four plus hours!!!

This was one of the first frontier airline flights this spring that wasn't delayed. It actually left on time. Some of the flight crew did not look happy, they didn't smile when the passengers were boarding or getting off the plane, and the passengers initiated greetings, not the staff. To me this was an odd experience to have with any flight/airline. I had a bad experience booking this flight. The price didn't solidify until late hours into the night. Ever time I purchased the ticket, I either received a denial email or an error because the price has changed, but it was never reflected on the flyfrontier or kayak websites until way after midnight on the date of travel. This caused me anxiety and irritation with the websites. Then I noticed a mishap with my name on my voucher as I went to check in, it was incorrect. When I proceeded to correct it, Frontier had no easy, let alone free, way to remedy it. I couldn't correct my name without a $75 charge, I couldn't cancel my voucher to repurchase it with the correct name without a $100 charge, because it was too close to departure. Then calling frontier was nearly impossible to remedy the situation with a human. It's already difficult to want to choose frontier because of all the upcharges, but you feel kinda trapped into doing so because it's the more affordable airline.

Seats were extremely uncomfortable and it was very hot on the plane.

The experience was terrible. The flight boarded late, then after leaving the gate the plane had had to return to the gate for fuel. After 2 hours on the plane, the flight was canceled. The reasons given for the cancelation didn't sound truthful. and different reasons were given. My 15 year old daughter was flying alone on this flight. When they all disembarked the plane she kept asking the crew what she was supposed to do. No one even gave her the courtesy of a response. No one. It took another 4.75 hrs to be out of customs and baggage. She was re-booked the following day. That flight departed 2 hours late. After all of that, they offered a measly $100 flight voucher with an expiry date of 3 months! All in all a terrible experience. We won't be using Frontier again in the future.

Xmas Day- Flights were on time for departure and arrival, baggage check in and boarding process were hassle free, baggage also arrived without any delay. Satisfied customer on this journey.

We’ve been sitting waiting for a gate for 30 minutes without explanation. Several of the older flight attendants are very rude.

Boarded late, no communication as to why, a lot of turbulence

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

Information on your arrival and departure airports