WAS - USM

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Cheap Flights from Washington, D.C. to Ko Samui (WAS-USM)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Washington, D.C. to Ko Samui

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WAS  Washington, D.C. All airports-USM Ko Samui
23510 kmmulti-stop
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USM  Ko Samui-WAS Washington, D.C. All airports
23510 kmmulti-stop
Multiple Airlines
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Price, demand, and travel trends for Washington, D.C. to Ko Samui flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

What is the cheapest Washington, D.C. to Ko Samui flight route?

There's little price difference between Washington, D.C. to Ko Samui routes. They average around ฿49,347 return, based on KAYAK data over the past 12 months.

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When to book flights from Washington, D.C. to Ko Samui

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Ko Samui based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your Washington, D.C. to Ko Samui flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines, and booking tips.

  • Do I need a passport to fly from Washington, D.C. to Ko Samui?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Washington, D.C. to Ko Samui flight?

    Return flights from Washington, D.C. to Ko Samui range from ฿41,720 to ฿55,744, with an average of ฿49,347 over the past 12 months. Anything below ฿41,720 counts as a good deal.

  • Which airports can I use when flying from Washington, D.C. to Ko Samui?

    Flights from Washington, D.C. to Ko Samui may depart from several airports in Washington, D.C. area, including Washington, D.C. Reagan-National (DCA) and Washington, D.C. Dulles Intl (IAD). Flights usually arrive at Ko Samui (USM).

  • Can I save money by using flexible dates for flights from Washington, D.C. to Ko Samui?

    Yes. Flexible dates can save you up to 30% on flights from Washington, D.C. to Ko Samui. Tuesday is the cheapest departure day at ฿38,844 return on average, while Thursday is the most expensive at ฿55,260, a difference of ฿16,416.

    KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

  • What is the time difference between Washington, D.C. and Ko Samui?

    Ko Samui is 11 hours ahead of Washington, D.C. (Indochina Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Ko Samui?

    Some of the most popular sights in Ko Samui are Chaweng Beach, Lamai Beach, and Bophut Beach. These are among the most viewed places in Ko Samui on KAYAK.

Your guide to booking Washington, D.C. to Ko Samui flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Tuesday departure and avoid flying on Thursday. On this route, Tuesday flights average ฿38,844, which is about ฿16,416 less than Thursday fares (30% savings) based on the last 12 months.
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Ko Samui Airport.

    • Ozo Chaweng Samui - Sha Extra Plus
    • Melia Koh Samui
    • Royal Muang Samui Villas

More options for your flight from Washington, D.C. to Ko Samui

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