$4,010 Cheap Flights from Charleston (CHS) to Samui Intl. Airport (USM)

View $4,010 flight on Fri, Jul 17, 2026Opens in a new window

Popular airlines from Charleston Intl. Airport (CHS) to Samui Intl. Airport (USM)

Cheap Flights from Charleston to Samui Intl. Airport (CHS-USM)

Prices were available within the past 7 days and start at $4,010 for one-way flights and $4,214 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Tue, Dec 23 - Tue, Jan 13
CHS
Charleston
USM
Koh Samui
$4,214 Roundtrip, found 14 hours ago
$4,214
Roundtrip
found 14 hours ago
Select JetBlue Airways flight, departing Tue, Dec 23 from Charleston to Koh Samui, returning Tue, Jan 13, priced at $4,214 found 14 hours ago
JetBlue Airways
Tue, Dec 23 - Tue, Jan 13
CHS
Charleston
USM
Koh Samui
$4,233 Roundtrip, found 14 hours ago
$4,233
Roundtrip
found 14 hours ago
Select JetBlue Airways flight, departing Tue, Dec 23 from Charleston to Koh Samui, returning Tue, Jan 13, priced at $4,233 found 14 hours ago
JetBlue Airways
Tue, Dec 23 - Tue, Jan 13
CHS
Charleston
USM
Koh Samui
$4,766 Roundtrip, found 14 hours ago
$4,766
Roundtrip
found 14 hours ago
Select JetBlue Airways flight, departing Tue, Dec 23 from Charleston to Koh Samui, returning Tue, Jan 13, priced at $4,766 found 14 hours ago
JetBlue Airways
Tue, Dec 23 - Tue, Jan 13
CHS
Charleston
USM
Koh Samui
$4,786 Roundtrip, found 14 hours ago
$4,786
Roundtrip
found 14 hours ago
Select JetBlue Airways flight, departing Tue, Dec 23 from Charleston to Koh Samui, returning Tue, Jan 13, priced at $4,786 found 14 hours ago
JetBlue Airways
Mon, Dec 22 - Mon, Jan 12
CHS
Charleston
USM
Koh Samui
$5,071 Roundtrip, found 14 hours ago
$5,071
Roundtrip
found 14 hours ago
Select JetBlue Airways flight, departing Mon, Dec 22 from Charleston to Koh Samui, returning Mon, Jan 12, priced at $5,071 found 14 hours ago
JetBlue Airways
Mon, Dec 22 - Mon, Jan 12
CHS
Charleston
USM
Koh Samui
$5,091 Roundtrip, found 14 hours ago
$5,091
Roundtrip
found 14 hours ago
Select JetBlue Airways flight, departing Mon, Dec 22 from Charleston to Koh Samui, returning Mon, Jan 12, priced at $5,091 found 14 hours ago

Frequently asked questions

How much does a flight from Charleston Intl. Airport (CHS) to Ko Samui Airport (USM) cost?
Secure a cheap one-way flight from $4,010 or cheap return flight from $4,214 from Charleston Intl. Airport (CHS) to Ko Samui Airport (USM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Charleston Intl. Airport (CHS) to Ko Samui Airport (USM)?
December is the most affordable month to fly from CHS to USM. Traveling during quieter months is often the key to finding a great deal.
What is the cheapest airline that flies from Charleston Intl. Airport (CHS) to Ko Samui Airport (USM)?
To find the cheapest airline that'll fly you from CHS to USM, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Charleston Intl. Airport (CHS) to Ko Samui Airport (USM)?
There are no daily direct flights departing from Charleston Intl. Airport (CHS) to Ko Samui Airport (USM). But you can book flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be cruising above the clouds before you know it.
What day of the week has the most flights from CHS to USM?
Typically you'll find the greatest selection of flight options on a Friday. Tuesdays are often the quietest.* But this can vary depending on the airline, season 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 Charleston Intl. Airport (CHS) to Ko Samui Airport (USM)?
To avoid possible delays on the Charleston Intl. Airport (CHS) to Ko Samui Airport (USM) route, aim to travel before 3 PM. Departures after this hour have a 22% higher chance of cancellation.**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 Charleston Intl. Airport (CHS) to Ko Samui Airport (USM) last-minute?
Last-minute bookings from CHS to USM are typically more expensive. To secure the best prices, start looking for flights as soon as possible. That being said, if you're flexible with your travel plans, you may score a cheap ticket right before you leave.
Is it cheaper to book a CHS to USM flight and hotel package?
Opting for a CHS to USM flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of accommodations and then add flights, car rentals and activities 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 Charleston Intl. Airport (CHS) to Ko Samui Airport (USM)?
In most cases, you can cancel or reschedule your CHS to USM flight. However, there may be additional fees, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's fees and rules on flight changes, or if you want further details, go to our Customer Service portal.

Travel information

Origin airport
Charleston Intl.
Destination airport
Samui Intl. Airport
Roundtrip price
$4,214
Distance
9504 mi

Book with confidence

Charleston to Samui Intl. Airport Flights

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

 

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

Sunday is one of the best days to book for cheap flights from Charleston 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 Charleston 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 Charleston to Samui Intl. Airport in 2025. You can also book with separate airlines for your outbound and return journeys, from $4,010 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 Charleston 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 Charleston 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.

 

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