$73 Cheap Flights from St. Louis (STL) to Detroit (DTW)

View $73 flight on Fri, Dec 5, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at $73 for one-way flights and $137 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Wed, Feb 18 - Thu, Feb 26
STL
St. Louis
DTW
Detroit
$137 Roundtrip, found 1 day ago
$137
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Wed, Feb 18 from St. Louis to Detroit, returning Thu, Feb 26, priced at $137 found 1 day ago
Frontier Airlines
Thu, Nov 6 - Thu, Nov 13
STL
St. Louis
DTW
Detroit
$160 Roundtrip, found 1 day ago
$160
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, Nov 6 from St. Louis to Detroit, returning Thu, Nov 13, priced at $160 found 1 day ago
Frontier Airlines
Sun, Dec 7 - Sat, Dec 13
STL
St. Louis
DTW
Detroit
$164 Roundtrip, found 1 day ago
$164
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sun, Dec 7 from St. Louis to Detroit, returning Sat, Dec 13, priced at $164 found 1 day ago
Frontier Airlines
Sun, Dec 7 - Sat, Dec 13
STL
St. Louis
DTW
Detroit
$170 Roundtrip, found 1 day ago
$170
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sun, Dec 7 from St. Louis to Detroit, returning Sat, Dec 13, priced at $170 found 1 day ago
Frontier Airlines
Sun, Nov 16 - Wed, Nov 19
STL
St. Louis
DTW
Detroit
$173 Roundtrip, found 3 days ago
$173
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Sun, Nov 16 from St. Louis to Detroit, returning Wed, Nov 19, priced at $173 found 3 days ago
United
Sat, Dec 6 - Sat, Dec 13
STL
St. Louis
DTW
Detroit
$174 Roundtrip, found 9 hours ago
$174
Roundtrip
found 9 hours ago
Select United flight, departing Sat, Dec 6 from St. Louis to Detroit, returning Sat, Dec 13, priced at $174 found 9 hours ago
Frontier Airlines
Wed, Feb 18 - Sun, Feb 22
STL
St. Louis
DTW
Detroit
$176 Roundtrip, found 1 day ago
$176
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Wed, Feb 18 from St. Louis to Detroit, returning Sun, Feb 22, priced at $176 found 1 day ago
American Airlines
Thu, Dec 4 - Sat, Dec 6
STL
St. Louis
DTW
Detroit
$178 Roundtrip, found 3 days ago
$178
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Dec 4 from St. Louis to Detroit, returning Sat, Dec 6, priced at $178 found 3 days ago
Southwest Airlines
Wed, Dec 3 - Sat, Dec 6
STL
St. Louis
DTW
Detroit
$203 Roundtrip, found 1 day ago
$203
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Wed, Dec 3 from St. Louis to Detroit, returning Sat, Dec 6, priced at $203 found 1 day ago
Delta
Tue, Dec 16 - Wed, Dec 24
STL
St. Louis
DTW
Detroit
$361 Roundtrip, found 16 hours ago
$361
Roundtrip
found 16 hours ago
Select Delta flight, departing Tue, Dec 16 from St. Louis to Detroit, returning Wed, Dec 24, priced at $361 found 16 hours ago

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

July is typically the cheapest month to fly

From $60 - $319 per traveler.

Alternative airports near Detroit

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

Select flight to Detroit Metropolitan Wayne County DTW. Cheapest option available. Average driving time to city center is 26 minutes. Flights from $388
DTW
Detroit Metropolitan Wayne County
Cheapest
Average driving time to city center26 min
Flights from $388

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Detroit Metropolitan Wayne County Airport (DTW) cost?
Lock in a cheap one-way flight from $73 or cheap return flight from $137 from Lambert-St. Louis Intl. Airport (STL) to Detroit Metropolitan Wayne County Airport (DTW) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Detroit Metropolitan Wayne County Airport (DTW)?
The cheapest month to fly from STL to DTW is February, when there's less demand. Off-peak months are typically when airlines offer better prices between these airports.
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 Lambert-St. Louis Intl. Airport (STL) to Detroit Metropolitan Wayne County Airport (DTW)?
The cheapest airline to offer flights between Lambert-St. Louis Intl. Airport (STL) and Detroit Metropolitan Wayne County Airport (DTW) can vary based on when you plan to fly. Southwest Airlines and Delta Air Lines are just some good options offering reasonable prices. Use Expedia's search tool to compare airlines in one place and find the right STL to DTW flight for your budget.
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.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Detroit Metropolitan Wayne County
Airlines serving
American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Roundtrip price
$137
Distance
439 mi
Average flight time
2 hours 30 mins

Book with confidence

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 February. 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 $73 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.

 

St. Louis to Detroit Flights

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*Available to One Key members.