$527 Cheap Flights from Washington (DCA) to Samui Intl. Airport (USM)

Popular airlines from Ronald Reagan Washington National Airport (DCA) to Samui Intl. Airport (USM)

Cheap Flights from Washington to Samui Intl. Airport (DCA-USM)

Prices were available within the past 7 days and start at $527 for one-way flights and $932 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

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Cathay Pacific

Alternative airports near Koh Samui

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

Frequently asked questions

How much does a flight from Ronald Reagan Washington National Airport (DCA) to Ko Samui Airport (USM) cost?
Secure a cheap one-way flight from $527 or cheap return flight from $932 from Ronald Reagan Washington National Airport (DCA) 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 Ronald Reagan Washington National Airport (DCA) to Ko Samui Airport (USM)?
Planning your getaway for November can help you save, as it's the cheapest month for flights between DCA and USM. You'll often find the lowest fares during off-peak months.
What is the cheapest airline that flies from Ronald Reagan Washington National Airport (DCA) to Ko Samui Airport (USM)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest DCA to USM flight.
How many flights per day from Ronald Reagan Washington National Airport (DCA) to Ko Samui Airport (USM)?
Direct flights from Ronald Reagan Washington National Airport (DCA) to Ko Samui Airport (USM) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from DCA to USM?
Typically you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* However, this can vary depending on the time of year, 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 Ronald Reagan Washington National Airport (DCA) to Ko Samui Airport (USM)?
To land at Ko Samui Airport (USM) on schedule, opt for a flight that leaves Ronald Reagan Washington National Airport (DCA) 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 Ronald Reagan Washington National Airport (DCA) to Ko Samui Airport (USM) last-minute?
Waiting until just before your departure to book a ticket from DCA to USM often results in higher prices. While you may find some last-minute offers, they aren't always guaranteed. Allow some flexibility in your schedule to maximize your chances of snagging a bargain.
Is it cheaper to book a DCA to USM flight and hotel package?
Opting for a DCA to USM flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Select from our wide range of accommodations and then add car rentals, flights 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 Ronald Reagan Washington National Airport (DCA) to Ko Samui Airport (USM)?
In most instances, you can cancel or modify your DCA to USM flight. However, additional fees may apply, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's rules and fees on flight changes, or if you'd like more details, visit our Customer Service portal.

Travel information

Origin airport
Ronald Reagan Washington National
Destination airport
Samui Intl. Airport
Airlines serving
Cathay Pacific
Roundtrip price
$931
Distance
9087 mi

Book with confidence

*Available to One Key members.