$588 Cheap Flights from Raleigh (RDU) to Samui Intl. Airport (USM)

View $588 flight on Tue, Oct 7, 2025Opens in a new window

Popular airlines from Raleigh-Durham International Airport (RDU) to Samui Intl. Airport (USM)

Cheap Flights from Raleigh to Samui Intl. Airport (RDU-USM)

Prices were available within the past 7 days and start at $588 for one-way flights and $1,032 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Oct 7 - Thu, Oct 30
RDU
Raleigh
USM
Koh Samui
$1,032 Roundtrip, found 11 hours ago
$1,032
Roundtrip
found 11 hours ago
Select United flight, departing Tue, Oct 7 from Raleigh to Koh Samui, returning Thu, Oct 30, priced at $1,032 found 11 hours ago
United
Tue, Oct 7 - Thu, Oct 30
RDU
Raleigh
USM
Koh Samui
$1,042 Roundtrip, found 11 hours ago
$1,042
Roundtrip
found 11 hours ago
Select United flight, departing Tue, Oct 7 from Raleigh to Koh Samui, returning Thu, Oct 30, priced at $1,042 found 11 hours ago
United
Thu, May 7 - Thu, May 14
RDU
Raleigh
USM
Koh Samui
$1,042 Roundtrip, found 6 days ago
$1,042
Roundtrip
found 6 days ago
Select United flight, departing Thu, May 7 from Raleigh to Koh Samui, returning Thu, May 14, priced at $1,042 found 6 days ago
United
Tue, Oct 7 - Thu, Oct 30
RDU
Raleigh
USM
Koh Samui
$1,051 Roundtrip, found 11 hours ago
$1,051
Roundtrip
found 11 hours ago
Select United flight, departing Tue, Oct 7 from Raleigh to Koh Samui, returning Thu, Oct 30, priced at $1,051 found 11 hours ago
United
Thu, May 7 - Thu, May 14
RDU
Raleigh
USM
Koh Samui
$1,052 Roundtrip, found 6 days ago
$1,052
Roundtrip
found 6 days ago
Select United flight, departing Thu, May 7 from Raleigh to Koh Samui, returning Thu, May 14, priced at $1,052 found 6 days ago
United
Mon, Oct 6 - Wed, Oct 29
RDU
Raleigh
USM
Koh Samui
$1,057 Roundtrip, found 11 hours ago
$1,057
Roundtrip
found 11 hours ago
Select United flight, departing Mon, Oct 6 from Raleigh to Koh Samui, returning Wed, Oct 29, priced at $1,057 found 11 hours ago
Cathay Pacific
Mon, Oct 6 - Tue, Oct 14
RDU
Raleigh
USM
Koh Samui
$1,442 Roundtrip, found 2 days ago
$1,442
Roundtrip
found 2 days ago
Select Cathay Pacific flight, departing Mon, Oct 6 from Raleigh to Koh Samui, returning Tue, Oct 14, priced at $1,442 found 2 days ago
Lufthansa
Mon, May 18 - Wed, Jun 10
RDU
Raleigh
USM
Koh Samui
$1,659 Roundtrip, found 1 day ago
$1,659
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Mon, May 18 from Raleigh to Koh Samui, returning Wed, Jun 10, priced at $1,659 found 1 day ago
Air France
Fri, Nov 21 - Mon, Nov 24
RDU
Raleigh
USM
Koh Samui
$1,797 Roundtrip, found 3 days ago
$1,797
Roundtrip
found 3 days ago
Select Air France flight, departing Fri, Nov 21 from Raleigh to Koh Samui, returning Mon, Nov 24, priced at $1,797 found 3 days ago
KLM
Fri, Mar 13 - Tue, Mar 17
RDU
Raleigh
USM
Koh Samui
$1,801 Roundtrip, found 2 days ago
$1,801
Roundtrip
found 2 days ago
Select KLM flight, departing Fri, Mar 13 from Raleigh to Koh Samui, returning Tue, Mar 17, priced at $1,801 found 2 days ago

Frequently asked questions

How much does a flight from Raleigh - Durham Intl. Airport (RDU) to Ko Samui Airport (USM) cost?
Grab a cheap one-way flight from $588 or cheap return flight from $1,032 from Raleigh - Durham Intl. Airport (RDU) to Ko Samui Airport (USM) 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 Raleigh - Durham Intl. Airport (RDU) to Ko Samui Airport (USM)?
Planning your trip for October is a good way to save, as it's the cheapest month for flights between RDU and USM. You'll usually find the lowest fares during off-peak months.
How many flights per day from Raleigh - Durham Intl. Airport (RDU) to Ko Samui Airport (USM)?
You'll have to catch a flight with a layover if you're traveling from Raleigh - Durham Intl. Airport (RDU) to Ko Samui Airport (USM). There are no daily direct flights on this route. However, just filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from RDU to USM?
Typically you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* However, this can change depending on the season, carrier 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 Raleigh - Durham Intl. Airport (RDU) to Ko Samui Airport (USM)?
To reach Ko Samui Airport (USM) without delays, pick a flight that takes off from Raleigh - Durham Intl. Airport (RDU) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Raleigh - Durham Intl. Airport (RDU) to Ko Samui Airport (USM) last-minute?
Last-minute bookings from RDU to USM are usually more expensive. For the lowest rates, start searching for flights ahead of time. That said, if your travel plans are flexible, you may land a cheap ticket right before you leave.
Is it cheaper to book a RDU to USM flight and hotel package?
You can save money by booking a RDU to USM flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one place. After selecting your preferred flights and accommodations, consider adding extras including car rentals, activities and tours.
Can I cancel or change the date of my flight from Raleigh - Durham Intl. Airport (RDU) to Ko Samui Airport (USM)?
Typically, it's possible to cancel or reschedule your RDU to USM flight. However, if it's been more than 24 hours since booking, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Travel information

Origin airport
Raleigh - Durham Intl.
Destination airport
Samui Intl. Airport
Airlines serving
Air France, British Airways, Cathay Pacific, KLM, Lufthansa
Roundtrip price
$1,031
Distance
9296 mi

Book with confidence

Book with confidence

Raleigh to Samui Intl. Airport Flights

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

 

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

Sunday is one of the best days to book for cheap flights from Raleigh 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 Raleigh 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 Raleigh to Samui Intl. Airport in 2025. You can also book with separate airlines for your outbound and return journeys, from $588 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 Raleigh 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 Raleigh 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.

 

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