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1.065 € Cheap Flights from Washington D.C. to Samui International

Compare Washington D.C. to Samui International flight deals

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Flight deals from Washington D.C. to Samui International

Looking for a cheap last-minute deal or the best return flight from Washington D.C. to Samui International? Find the lowest prices on one-way and return tickets right here.
Koh Samui.1.065 € per passenger.Departing Sun, 30 Nov, returning Sun, 7 Dec.Return flight with Turkish Airlines and Bangkok Airways.Outbound indirect flight with Turkish Airlines, departs from Washington Dulles on Sun, 30 Nov, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Sun, 7 Dec, arriving in Washington Dulles.Price includes taxes and charges.From 1.065 €, select.
Koh Samui.1.090 € per passenger.Departing Mon, 1 Dec, returning Mon, 8 Dec.Return flight with Turkish Airlines and Bangkok Airways.Outbound indirect flight with Turkish Airlines, departs from Washington Dulles on Mon, 1 Dec, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Mon, 8 Dec, arriving in Washington Dulles.Price includes taxes and charges.From 1.090 €, select.
Koh Samui.1.130 € per passenger.Departing Thu, 23 Oct, returning Thu, 30 Oct.Return flight with Turkish Airlines and Bangkok Airways.Outbound indirect flight with Turkish Airlines, departs from Washington Dulles on Thu, 23 Oct, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Thu, 30 Oct, arriving in Washington Dulles.Price includes taxes and charges.From 1.130 €, select.
Koh Samui.1.233 € per passenger.Departing Fri, 9 Jan, returning Sat, 17 Jan.Return flight with Turkish Airlines and Bangkok Airways.Outbound indirect flight with Turkish Airlines, departs from Washington Dulles on Fri, 9 Jan, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Sat, 17 Jan, arriving in Baltimore Washington International.Price includes taxes and charges.From 1.233 €, select.
Koh Samui.1.235 € per passenger.Departing Sat, 25 Oct, returning Sat, 1 Nov.Return flight with Alaska Airlines and Bangkok Airways.Outbound indirect flight with Alaska Airlines, departs from Washington Ronald Reagan on Sat, 25 Oct, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Sat, 1 Nov, arriving in Washington Dulles.Price includes taxes and charges.From 1.235 €, select.

Find the cheapest month to fly from Washington D.C. to Samui International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Washington D.C. to Samui International flights are currently cheapest in December.
Oct
from 1.130 €
Nov
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Dec
from 1.090 €
Jan
from 1.233 €
Feb
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Mar
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Apr
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May
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Jun
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Sep
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Washington D.C. to Samui International: Alternative routes

Compare routes from Washington D.C. to Koh Samui below. You may find an airport to fly into that's cheaper, faster, or easier than Samui International.

Washington D.C. to Koh Samui: Flight information

The things to know before you go.
Cheapest flight found1.065 €
Cheapest month to flyNovember

Finding cheap flights from Washington D.C. to Samui International: Frequently asked questions

The best price we found for a return flight from Washington D.C. to Samui International is 1.065 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Washington D.C. to Samui International. But we found flights with one stop from 1.065 €.
As of October 2025, there are no flights flying from Washington D.C. to Samui International.
The cheapest month to fly from Washington D.C. to Samui International is usually November.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Washington D.C. to Samui International Airport on Sunday, 30 November 2025.
No airlines currently offer direct flights between Washington D.C. and Samui International Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Samui International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Koh Samui is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Samui International is Turkish Airlines .

Travelling from Washington DC to Koh Samui Airport (USM): What you need to know

  • When planning your flight from Washington DC to Koh Samui Airport (USM), there's a good range of airports you can jet off from. Ronald Reagan National Airport (DCA), Washington Dulles International Airport (IAD) and Baltimore/Wash International Thurgood Marshall Airport (BWI) are Washington DC's main terminals.

  • The timezone in Koh Samui is UTC+7, which is 11 hours ahead of Washington DC. Koh Samui Airport is located in Koh Samui.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are tried-and-true travel tips. Be at the airport on time to board your flight from Washington DC to USM.

  • High season means busier airports, so show up even earlier. Give yourself at least two hours before a domestic flight and four hours for an international journey to stick to your schedule.

Airports in Washington DC

Ronald Reagan National Airport (DCA)

  • DCA is around 8 kilometres from central Washington DC. If you're ride-sharing, catching a cab or driving from the centre, it'll take 15 minutes or so to get there, depending on traffic conditions. If you're taking public transport, expect the travel time to be around 45 minutes.

  • Booked an early flight from Washington DC to Koh Samui Airport? Avoid the stress of rushing to the terminal (and enjoy a few extra z's) by picking one of these stays near Ronald Reagan National Airport:

  • When it comes to Ronald Reagan National Airport's on-time performance, 76.44% of flights meet their scheduled arrival time.

  • You'll find DCA at 1 Aviation Circle.

Washington Dulles International Airport (IAD)

  • IAD is around 56 kilometres from central Washington DC. It'll take you 50 minutes or so to get to the airport by car from the city centre. Public transport takes roughly 1 hour 10 minutes.

  • Want to treat yourself to an extra night away before boarding your Washington DC to USM flight? Check in to a hotel near Washington Dulles International Airport before your adventure officially begins. These stays have your key waiting:

  • Washington Dulles International Airport has an on-time performance of 74.39%. This figure sheds light on how frequently flights that take off from this airport land on time.

  • The street address for IAD is 1 Saarinen Circle.

Baltimore/Wash International Thurgood Marshall Airport (BWI)

About Koh Samui Airport (USM)

  • If you're coming in on a late flight from Washington DC to Koh Samui Airport, few things beat the convenience of staying close to the terminal. Pick up your bags from the carousel and then be showered and sleeping soon after at one of these hotels near USM:

  • Grab a Koh Samui Airport rental car and explore Koh Samui and beyond with your own set of wheels. Asap car hire, Hertz and Drive Car Hire are leading providers to choose from here.

  • Lock in the lowest price by booking your ride around four weeks ahead of your Washington DC to Koh Samui Airport flight.

How to find the cheapest flights from Washington DC to Koh Samui Airport (USM)

  • 479 € is the best price for a one-way ticket from Washington DC to Koh Samui Airport. Return flights start at 1.065 €. These prices may change based on availability.

  • To find cheap flights from Washington DC to USM, book early. Airlines typically offer lower fares when flights are first released.

  • Cheap Washington DC to Koh Samui Airport tickets are easier to find if you're not locked into specific dates. Use the 'Whole month' search function to compare fares across each month and then choose the cheapest day.

  • Spend less time searching for cheap plane tickets from Washington DC to USM by creating a Price Alert. We'll send you an email or notification through the app when a lower fare becomes available.

  • Lock in a cheap flight from Washington DC to Koh Samui Airport by using filters. Select your ideal times, number of stops and airlines, then sort the results by 'Cheapest' for the best deals.

Explore more of Thailand

  • You've done Koh Samui, now it's time to explore other corners of Thailand. Journey around 129 kilometres south to Nakhon Si Thammarat to tick off its must-visit sights. From Wat Phra Phrom to Wat Pho Sadet and Wat Yai Chai Mongkol, you'll have a packed itinerary ahead.

  • Around 257 kilometres south-west of Koh Samui, Phuket is another favourite stop in Thailand. Experience this destination's highlights firsthand at V.MarineTour- Phi Phi Islands Day Trip - Private Boat Charters, Sunrise Beach and Paradise Beach.

Plan the rest of your trip from Washington D.C. to Koh Samui

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.