$715 Cheap Flights from Detroit (DTW) to Samui Intl. Airport (USM)

View $715 flight on Wed, Nov 5, 2025Opens in a new window

Popular airlines from Detroit Metropolitan Wayne County Airport (DTW) to Samui Intl. Airport (USM)

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Cheap Flights from Detroit to Samui Intl. Airport (DTW-USM)

Prices were available within the past 7 days and start at $715 for one-way flights and $1,342 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Cathay Pacific
Mon, Feb 9 - Sun, Feb 15
DTW
Detroit
USM
Koh Samui
$1,342 Roundtrip, found 1 hour ago
$1,342
Roundtrip
found 1 hour ago
Select Cathay Pacific flight, departing Mon, Feb 9 from Detroit to Koh Samui, returning Sun, Feb 15, priced at $1,342 found 1 hour ago
Cathay Pacific
Mon, Jan 5 - Mon, Jan 19
DTW
Detroit
USM
Koh Samui
$1,361 Roundtrip, found 10 hours ago
$1,361
Roundtrip
found 10 hours ago
Select Cathay Pacific flight, departing Mon, Jan 5 from Detroit to Koh Samui, returning Mon, Jan 19, priced at $1,361 found 10 hours ago
Cathay Pacific
Tue, Mar 3 - Sat, Mar 14
DTW
Detroit
USM
Koh Samui
$1,411 Roundtrip, found 1 day ago
$1,411
Roundtrip
found 1 day ago
Select Cathay Pacific flight, departing Tue, Mar 3 from Detroit to Koh Samui, returning Sat, Mar 14, priced at $1,411 found 1 day ago
Turkish Airlines
Thu, Nov 13 - Thu, Nov 20
DTW
Detroit
USM
Koh Samui
$1,499 Roundtrip, found 5 days ago
$1,499
Roundtrip
found 5 days ago
Select Turkish Airlines flight, departing Thu, Nov 13 from Detroit to Koh Samui, returning Thu, Nov 20, priced at $1,499 found 5 days ago
Turkish Airlines
Mon, Feb 9 - Sun, Feb 15
DTW
Detroit
USM
Koh Samui
$1,509 Roundtrip, found 1 hour ago
$1,509
Roundtrip
found 1 hour ago
Select Turkish Airlines flight, departing Mon, Feb 9 from Detroit to Koh Samui, returning Sun, Feb 15, priced at $1,509 found 1 hour ago
Turkish Airlines
Tue, Mar 3 - Sat, Mar 14
DTW
Detroit
USM
Koh Samui
$1,509 Roundtrip, found 1 day ago
$1,509
Roundtrip
found 1 day ago
Select Turkish Airlines flight, departing Tue, Mar 3 from Detroit to Koh Samui, returning Sat, Mar 14, priced at $1,509 found 1 day ago
Turkish Airlines
Mon, Feb 9 - Sun, Feb 15
DTW
Detroit
USM
Koh Samui
$1,513 Roundtrip, found 1 hour ago
$1,513
Roundtrip
found 1 hour ago
Select Turkish Airlines flight, departing Mon, Feb 9 from Detroit to Koh Samui, returning Sun, Feb 15, priced at $1,513 found 1 hour ago
Lufthansa
Wed, May 6 - Tue, May 19
DTW
Detroit
USM
Koh Samui
$1,659 Roundtrip, found 3 days ago
$1,659
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Wed, May 6 from Detroit to Koh Samui, returning Tue, May 19, priced at $1,659 found 3 days ago
Air France
Fri, Nov 21 - Sun, Nov 30
DTW
Detroit
USM
Koh Samui
$2,080 Roundtrip, found 5 hours ago
$2,080
Roundtrip
found 5 hours ago
Select Air France flight, departing Fri, Nov 21 from Detroit to Koh Samui, returning Sun, Nov 30, priced at $2,080 found 5 hours ago
KLM
Fri, Nov 21 - Sun, Nov 30
DTW
Detroit
USM
Koh Samui
$2,119 Roundtrip, found 5 hours ago
$2,119
Roundtrip
found 5 hours ago
Select KLM flight, departing Fri, Nov 21 from Detroit to Koh Samui, returning Sun, Nov 30, priced at $2,119 found 5 hours ago

Alternative airports near Koh Samui

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

Select flight to Samui Intl. Airport USM. Cheapest and Closest option available. Average driving time to city center is 31 minutes. Flights from $1,869
USM
Samui Intl. Airport
CheapestClosest
Average driving time to city center31 min
Flights from $1,869

Frequently asked questions

How much does a flight from Detroit Metropolitan Wayne County Airport (DTW) to Ko Samui Airport (USM) cost?
Lock in a cheap one-way flight from $715 or cheap return flight from $1,342 from Detroit Metropolitan Wayne County Airport (DTW) to Ko Samui Airport (USM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Detroit Metropolitan Wayne County Airport (DTW) to Ko Samui Airport (USM)?
February is the least expensive month to fly from DTW to USM. Traveling during quieter months is often the key to better flight prices.
What is the cheapest airline that flies from Detroit Metropolitan Wayne County Airport (DTW) to Ko Samui Airport (USM)?
To find the cheapest airline that'll fly you from DTW to USM, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Detroit Metropolitan Wayne County Airport (DTW) to Ko Samui Airport (USM)?
You'll have to hop on a flight with a layover if you're traveling from Detroit Metropolitan Wayne County Airport (DTW) to Ko Samui Airport (USM). Direct flights don't operate daily on this route. However, just filter your search to include one or more stops to find the best option for your trip.
What day of the week has the most flights from DTW to USM?
Usually you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* However, this can change depending on the season, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Detroit Metropolitan Wayne County Airport (DTW) to Ko Samui Airport (USM)?
To avoid possible delays on the Detroit Metropolitan Wayne County Airport (DTW) to Ko Samui Airport (USM) route, aim to fly before 3 PM. Later departures have a 22% higher chance of being canceled.**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.
Is it cheaper to buy a plane ticket from Detroit Metropolitan Wayne County Airport (DTW) to Ko Samui Airport (USM) last-minute?
Holding off until just before your departure to book a flight from DTW to USM generally means paying more. While you may find some last-minute offers, they aren't always guaranteed. Keep your travel plans flexible to maximize your chances of scoring a bargain.
Is it cheaper to book a DTW to USM flight and hotel package?
You'll generally save money by booking a DTW to USM flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. After selecting your ideal flights and accommodations, consider other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Detroit Metropolitan Wayne County Airport (DTW) to Ko Samui Airport (USM)?
In most cases, you're able to reschedule or cancel your DTW to USM flight. However, there may be additional fees, especially if you made your booking over 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you want more information, go to our Customer Service portal.

Travel information

Travel information

Origin airport
Detroit Metropolitan Wayne County
Destination airport
Samui Intl. Airport
Airlines serving
Cathay Pacific, Lufthansa
Roundtrip price
$1,342
Distance
8852 mi

Book with confidence

Book with confidence

Detroit to Samui Intl. Airport Flights

The cheapest times to fly from Detroit to Samui Intl. Airport

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 Detroit to Samui Intl. Airport are during the month of February. You can find some of the cheapest flights from Detroit to Samui Intl. Airport with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Detroit to Samui Intl. Airport

Sunday is one of the best days to book for cheap flights from Detroit to Samui Intl. Airport: 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 Detroit to Samui Intl. Airport

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 Detroit to Samui Intl. Airport in 2025. You can also book with separate airlines for your outbound and return journeys, from $715 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 Detroit to Samui Intl. Airport 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 Detroit to Samui Intl. Airport 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.

 

Detroit to Samui Intl. Airport Flights
*Available to One Key members.