$30 Cheap Flights from St. Louis (STL) to Detroit (DTW)

View $30 flight on Sun, Aug 10, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Detroit Metropolitan Wayne County Airport (DTW)

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

Prices were available within the past 7 days and start at $30 for one-way flights and $60 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Thu, Aug 14 - Mon, Aug 18
STL
St. Louis
DTW
Detroit
$60 Roundtrip, just found
$60
Roundtrip
just found
Select Spirit Airlines flight, departing Thu, Aug 14 from St. Louis to Detroit, returning Mon, Aug 18, priced at $60 just found
Spirit Airlines
Fri, Oct 24 - Mon, Oct 27
STL
St. Louis
DTW
Detroit
$70 Roundtrip, just found
$70
Roundtrip
just found
Select Spirit Airlines flight, departing Fri, Oct 24 from St. Louis to Detroit, returning Mon, Oct 27, priced at $70 just found
Spirit Airlines
Thu, Jul 31 - Mon, Aug 4
STL
St. Louis
DTW
Detroit
$73 Roundtrip, just found
$73
Roundtrip
just found
Select Spirit Airlines flight, departing Thu, Jul 31 from St. Louis to Detroit, returning Mon, Aug 4, priced at $73 just found
Spirit Airlines
Sun, Jul 27 - Mon, Aug 4
STL
St. Louis
DTW
Detroit
$80 Roundtrip, just found
$80
Roundtrip
just found
Select Spirit Airlines flight, departing Sun, Jul 27 from St. Louis to Detroit, returning Mon, Aug 4, priced at $80 just found
Spirit Airlines
Fri, Aug 1 - Thu, Aug 7
STL
St. Louis
DTW
Detroit
$82 Roundtrip, found 10 hours ago
$82
Roundtrip
found 10 hours ago
Select Spirit Airlines flight, departing Fri, Aug 1 from St. Louis to Detroit, returning Thu, Aug 7, priced at $82 found 10 hours ago
Spirit Airlines
Mon, Jul 28 - Thu, Jul 31
STL
St. Louis
DTW
Detroit
$86 Roundtrip, just found
$86
Roundtrip
just found
Select Spirit Airlines flight, departing Mon, Jul 28 from St. Louis to Detroit, returning Thu, Jul 31, priced at $86 just found
Southwest Airlines
Fri, Oct 10 - Sun, Oct 12
STL
St. Louis
DTW
Detroit
$90 Roundtrip, just found
$90
Roundtrip
just found
Select Southwest Airlines flight, departing Fri, Oct 10 from St. Louis to Detroit, returning Sun, Oct 12, priced at $90 just found
Delta
Thu, Aug 28 - Sun, Aug 31
STL
St. Louis
DTW
Detroit
$90 Roundtrip, just found
$90
Roundtrip
just found
Select Delta flight, departing Thu, Aug 28 from St. Louis to Detroit, returning Sun, Aug 31, priced at $90 just found
American Airlines
Thu, Aug 28 - Sun, Aug 31
STL
St. Louis
DTW
Detroit
$124 Roundtrip, just found
$124
Roundtrip
just found
Select American Airlines flight, departing Thu, Aug 28 from St. Louis to Detroit, returning Sun, Aug 31, priced at $124 just found
United
Sat, Aug 30 - Tue, Sep 2
STL
St. Louis
DTW
Detroit
$157 Roundtrip, found 4 days ago
$157
Roundtrip
found 4 days ago
Select United flight, departing Sat, Aug 30 from St. Louis to Detroit, returning Tue, Sep 2, priced at $157 found 4 days ago

Find the cheapest month to fly from St. Louis (STL) to Detroit (DTW)

June is typically the cheapest month to fly

From $60 - $432 per traveler.

Graph displaying average flight prices per month

Alternative airports near Detroit

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Windsor, ON YQG. Average driving time to city center is 15 minutes. Flights from $801
YQG
Windsor, ON
Average driving time to city center15 min
Flights from $801
Flights from St. Louis (STL) to Detroit (DTW)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Detroit Metropolitan Wayne County
Airlines serving
American Airlines, Delta, Frontier Airlines, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$60
Distance
439 mi
Average flight time
2 hours 31 mins

St. Louis to Detroit Flights

The cheapest times to fly from St. Louis to Detroit

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Detroit are during the month of August. You can find some of the cheapest flights from St. Louis to Detroit with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Detroit

Sunday is one of the best days to book for cheap flights from St. Louis to Detroit: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Detroit

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Detroit in 2025. You can also book with separate airlines for your outbound and return journeys, from $30 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Detroit flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Detroit airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Detroit Metropolitan Wayne County Airport (DTW) cost?
Cheap return flights from Lambert-St. Louis Intl. Airport (STL) to Detroit Metropolitan Wayne County Airport (DTW) start from $60. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Spirit Airlines flight leaving STL on July 31 2025 and touching down at DTW. The price was last updated on July 8 2025 and has not changed since.
What is the cheapest month to fly from STL to DTW?
The cheapest flights from STL to DTW are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Lambert-St. Louis Intl. Airport (STL) to Detroit Metropolitan Wayne County Airport (DTW)?
When setting off from Lambert-St. Louis Intl. Airport (STL), you can get on a direct flight to Detroit Metropolitan Wayne County Airport (DTW) with Delta Air Lines.
What is the cheapest airline that flies from STL to DTW?
Fly from STL to DTW with Spirit Airlines. This carrier currently has the lowest one-way fare for this route, starting from $30. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from STL on October 2 2025. Prices were last updated on July 8 2025 and have not changed since.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Detroit Metropolitan Wayne County Airport (DTW)?
When taking off from Lambert-St. Louis Intl. Airport (STL), you can take your pick from an average of 4 daily direct flights to Detroit Metropolitan Wayne County Airport (DTW).
What are the most popular departure times for flights from Lambert-St. Louis Intl. Airport (STL) to Detroit Metropolitan Wayne County Airport (DTW)?
More people fly between STL and DTW at 11 AM than at any other point in the day. Rather go when it's quieter? Pick a flight outside the busiest times and there's a chance you'll save on your fare as well.
What day of the week has the most flights from STL to DTW?
Friday offers the most flights from Lambert-St. Louis Intl. Airport (STL) to Detroit Metropolitan Wayne County Airport (DTW). Consider traveling on this day and you'll have a greater chance of finding a departure that fits your plans.
What is the earliest flight from Lambert-St. Louis Intl. Airport (STL) to Detroit Metropolitan Wayne County Airport (DTW)?
Lambert-St. Louis Intl. Airport (STL)'s first flight to Detroit Metropolitan Wayne County Airport (DTW) leaves at approximately 6:43AM UTC-6. With a travel time of 1h 37m, you'll touch down at around 9:20AM UTC-5.
How long does it take to fly from Lambert-St. Louis Intl. Airport (STL) to Detroit Metropolitan Wayne County Airport (DTW)?
Flights from STL to DTW have an average travel time of 1 hour and 36 minutes. The distance between these two airports is 440 mi.
What airline has the least delays from STL to DTW?
Aeromexico has the strongest track record for on-time direct flights from Lambert-St. Louis Intl. Airport (STL) to Detroit Metropolitan Wayne County Airport (DTW), with an on-time rating of 100%. Use the Expedia App to check your flight schedule before you jet off and get immediate updates about any trip changes.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Detroit Metropolitan Wayne County Airport (DTW)?
To reach Detroit Metropolitan Wayne County Airport (DTW) on time, opt for a flight that leaves from Lambert-St. Louis Intl. Airport (STL) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Detroit from Lambert-St. Louis Intl. Airport (STL)?
Explore your flight options from Lambert-St. Louis Intl. Airport (STL) to Detroit Metropolitan Wayne County Airport (DTW). This is the only airport in Detroit you can fly into if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Detroit Metropolitan Wayne County Airport (DTW) last-minute?
Last-minute fares from STL to DTW are usually more expensive. To lock in the cheapest rates, start looking for flights as early as possible. That being said, if your travel plans are flexible, it's possible to score a cheap ticket right before you leave.
Is it cheaper to book a STL to DTW flight and hotel package?
Compared with arranging hotels and flights separately, booking a STL to DTW flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one convenient place will take the hassle out of travel planning. Simply pick your flights and choose from our extensive range of hotels, then customize your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Detroit Metropolitan Wayne County Airport (DTW)?
Generally, it's possible to reschedule or cancel your STL to DTW flight. However, if it's been more than 24 hours since booking, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find further details on our Customer Service portal.

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