$731 Cheap Flights from Eugene (EUG) to Samui Intl. Airport (USM)

View $731 flight on Sun, Feb 22, 2026Opens in a new window

Popular airlines from Mahlon Sweet Field Airport (EUG) to Samui Intl. Airport (USM)

Cheap Flights from Eugene to Samui Intl. Airport (EUG-USM)

Prices were available within the past 7 days and start at $731 for one-way flights and $1,419 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Jan 17 - Sat, Jan 24
EUG
Eugene
USM
Koh Samui
$1,419 Roundtrip, found 2 days ago
$1,419
Roundtrip
found 2 days ago
Select United flight, departing Sat, Jan 17 from Eugene to Koh Samui, returning Sat, Jan 24, priced at $1,419 found 2 days ago
United
Sat, Jan 17 - Sat, Jan 24
EUG
Eugene
USM
Koh Samui
$1,420 Roundtrip, found 2 days ago
$1,420
Roundtrip
found 2 days ago
Select United flight, departing Sat, Jan 17 from Eugene to Koh Samui, returning Sat, Jan 24, priced at $1,420 found 2 days ago
United
Sat, Jan 17 - Sat, Jan 24
EUG
Eugene
USM
Koh Samui
$1,426 Roundtrip, found 2 days ago
$1,426
Roundtrip
found 2 days ago
Select United flight, departing Sat, Jan 17 from Eugene to Koh Samui, returning Sat, Jan 24, priced at $1,426 found 2 days ago
United
Sat, Jan 17 - Sat, Jan 24
EUG
Eugene
USM
Koh Samui
$1,427 Roundtrip, found 2 days ago
$1,427
Roundtrip
found 2 days ago
Select United flight, departing Sat, Jan 17 from Eugene to Koh Samui, returning Sat, Jan 24, priced at $1,427 found 2 days ago
United
Sat, Jan 17 - Sat, Jan 24
EUG
Eugene
USM
Koh Samui
$1,434 Roundtrip, found 2 days ago
$1,434
Roundtrip
found 2 days ago
Select United flight, departing Sat, Jan 17 from Eugene to Koh Samui, returning Sat, Jan 24, priced at $1,434 found 2 days ago
United
Sun, Feb 22 - Fri, Feb 27
EUG
Eugene
USM
Koh Samui
$1,436 Roundtrip, found 6 days ago
$1,436
Roundtrip
found 6 days ago
Select United flight, departing Sun, Feb 22 from Eugene to Koh Samui, returning Fri, Feb 27, priced at $1,436 found 6 days ago
United
Sat, Jan 17 - Sat, Jan 24
EUG
Eugene
USM
Koh Samui
$1,439 Roundtrip, found 2 days ago
$1,439
Roundtrip
found 2 days ago
Select United flight, departing Sat, Jan 17 from Eugene to Koh Samui, returning Sat, Jan 24, priced at $1,439 found 2 days ago
United
Sat, Jan 17 - Sat, Jan 24
EUG
Eugene
USM
Koh Samui
$1,440 Roundtrip, found 2 days ago
$1,440
Roundtrip
found 2 days ago
Select United flight, departing Sat, Jan 17 from Eugene to Koh Samui, returning Sat, Jan 24, priced at $1,440 found 2 days ago
United
Sat, Jan 17 - Sat, Jan 24
EUG
Eugene
USM
Koh Samui
$1,440 Roundtrip, found 1 day ago
$1,440
Roundtrip
found 1 day ago
Select United flight, departing Sat, Jan 17 from Eugene to Koh Samui, returning Sat, Jan 24, priced at $1,440 found 1 day ago
United
Sun, Feb 22 - Fri, Feb 27
EUG
Eugene
USM
Koh Samui
$1,444 Roundtrip, found 6 days ago
$1,444
Roundtrip
found 6 days ago
Select United flight, departing Sun, Feb 22 from Eugene to Koh Samui, returning Fri, Feb 27, priced at $1,444 found 6 days ago

Frequently asked questions

How much does a flight from Mahlon Sweet Field Airport (EUG) to Ko Samui Airport (USM) cost?
Get a cheap one-way flight from $731 or cheap return flight from $1,419 from Mahlon Sweet Field Airport (EUG) 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 Mahlon Sweet Field Airport (EUG) to Ko Samui Airport (USM)?
January is the cheapest month to fly from EUG to USM. Traveling during quieter months is often the key to finding a great deal.
What is the cheapest airline that flies from Mahlon Sweet Field Airport (EUG) to Ko Samui Airport (USM)?
To find the cheapest airline flying from EUG to USM, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Mahlon Sweet Field Airport (EUG) to Ko Samui Airport (USM)?
Nonstop flights from Mahlon Sweet Field Airport (EUG) to Ko Samui Airport (USM) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from EUG to USM?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Mahlon Sweet Field Airport (EUG) to Ko Samui Airport (USM)?
To arrive at Ko Samui Airport (USM) on schedule, choose a flight that leaves from Mahlon Sweet Field Airport (EUG) before 3 PM. The likelihood 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.
Is it cheaper to buy a plane ticket from Mahlon Sweet Field Airport (EUG) to Ko Samui Airport (USM) last-minute?
Last-minute fares from EUG to USM are generally more expensive. To secure the best rates, start looking for flights ahead of time. That said, if your travel plans are flexible, it's possible to land a cheap fare right before you leave.
Is it cheaper to book an EUG to USM flight and hotel package?
Opting for an EUG to USM flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Choose from our impressive range of accommodations and then add car rentals, activities and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Mahlon Sweet Field Airport (EUG) to Ko Samui Airport (USM)?
In most instances, you're able to cancel or reschedule your EUG to USM flight. However, additional charges may apply, especially if you booked more than 24 hours ago. Check your itinerary for the airline's guidelines and fees on flight changes, or if you want further details, head to our Customer Service portal.

Travel information

Origin airport
Eugene
Destination airport
Samui Intl. Airport
Roundtrip price
$1,419
Distance
7846 mi

Book with confidence

Eugene to Samui Intl. Airport Flights

The cheapest times to fly from Eugene 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 Eugene to Samui Intl. Airport are during the month of January. You can find some of the cheapest flights from Eugene to Samui Intl. Airport with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Eugene 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 Eugene 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 Eugene to Samui Intl. Airport in 2026. You can also book with separate airlines for your outbound and return journeys, from $731 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 Eugene 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 Eugene 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.

 

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