DCA - USM

$739 Find Cheap Flights from Reagan Washington National Airport to Ko Samui - Compare and Save

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Flight Deals

Cheap Flights from Reagan-National to Ko Samui (DCA-USM)

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

Recent round-trip flight deals from Reagan-National to Ko Samui

Sun, Oct 18 - Sat, Oct 24
Multiple Airlines Logo
12:59 pm - 7:40 pmDCA  Washington, D.C. Reagan-National-USM Ko Samui
43h 41m2 stops Chicago O'Hare Intl Hong Kong Intl
Multiple Airlines Logo
11:55 am - 9:03 pmUSM  Ko Samui-DCA Washington, D.C. Reagan-National
44h 08m2 stops Hong Kong Intl Los Angeles
$1,168Multiple Airlines
Sun, Oct 11 - Sun, Oct 18
Multiple Airlines Logo
12:59 pm - 7:40 pmDCA  Washington, D.C. Reagan-National-USM Ko Samui
43h 41m2 stops Chicago O'Hare Intl Hong Kong Intl
Multiple Airlines Logo
11:55 am - 7:59 pmUSM  Ko Samui-DCA Washington, D.C. Reagan-National
43h 04m2 stops Hong Kong Intl Chicago O'Hare Intl
$1,209Multiple Airlines
Sat, Sep 12 - Tue, Sep 15
Multiple Airlines Logo
6:30 am - 7:40 pmDCA  Washington, D.C. Reagan-National-USM Ko Samui
26h 10m2 stops New York John F Kennedy Intl Hong Kong Intl
Multiple Airlines Logo
11:55 am - 8:06 pmUSM  Ko Samui-DCA Washington, D.C. Reagan-National
43h 11m2 stops Hong Kong Intl Chicago O'Hare Intl
$1,377Multiple Airlines
Thu, Sep 17 - Sun, Sep 27
Cathay Pacific Logo
11:31 am - 7:40 pmDCA  Washington, D.C. Reagan-National-USM Ko Samui
45h 09m2 stops Chicago O'Hare Intl Hong Kong Intl
Cathay Pacific Logo
11:55 am - 8:06 pmUSM  Ko Samui-DCA Washington, D.C. Reagan-National
43h 11m2 stops Hong Kong Intl Chicago O'Hare Intl
$1,538Cathay Pacific
Mon, Oct 12 - Mon, Oct 19
Multiple Airlines Logo
5:00 pm - 7:40 pmDCA  Washington, D.C. Reagan-National-USM Ko Samui
39h 40m2 stops Dallas/Fort Worth Hong Kong Intl
Multiple Airlines Logo
11:55 am - 7:59 pmUSM  Ko Samui-DCA Washington, D.C. Reagan-National
43h 04m2 stops Hong Kong Intl Chicago O'Hare Intl
$1,603Multiple Airlines
Thu, Sep 17 - Sun, Sep 27
Cathay Pacific Logo
11:31 am - 7:40 pmDCA  Washington, D.C. Reagan-National-USM Ko Samui
45h 09m2 stops Chicago O'Hare Intl Hong Kong Intl
Cathay Pacific Logo
11:55 am - 8:06 pmUSM  Ko Samui-DCA Washington, D.C. Reagan-National
43h 11m2 stops Hong Kong Intl Chicago O'Hare Intl
$1,617Cathay Pacific
Sun, Nov 8 - Wed, Nov 25
Multiple Airlines Logo
6:59 pm - 6:15 pmDCA  Washington, D.C. Reagan-National-USM Ko Samui
59h 16m2 stops San Francisco Singapore Changi
Multiple Airlines Logo
1:25 pm - 10:52 pmUSM  Ko Samui-DCA Washington, D.C. Reagan-National
45h 27m3 stops Singapore Changi Frankfurt am Main New York John F Kennedy Intl
$2,201Multiple Airlines
Sun, Nov 8 - Wed, Nov 25
Multiple Airlines Logo
6:25 am - 9:05 pmDCA  Washington, D.C. Reagan-National-USM Ko Samui
50h 40m3 stops New York John F Kennedy Intl Frankfurt am Main Singapore Changi
Multiple Airlines Logo
1:25 pm - 10:52 pmUSM  Ko Samui-DCA Washington, D.C. Reagan-National
45h 27m3 stops Singapore Changi Frankfurt am Main New York John F Kennedy Intl
$2,211Multiple Airlines
Sun, Nov 8 - Wed, Nov 25
Multiple Airlines Logo
9:30 am - 6:15 pmDCA  Washington, D.C. Reagan-National-USM Ko Samui
44h 45m2 stops Los Angeles Singapore Changi
Multiple Airlines Logo
4:25 pm - 10:52 pmUSM  Ko Samui-DCA Washington, D.C. Reagan-National
42h 27m2 stops Singapore Changi New York John F Kennedy Intl
$2,288Multiple Airlines
Sat, Sep 12 - Tue, Sep 15
Multiple Airlines Logo
8:00 am - 9:10 pmDCA  Washington, D.C. Reagan-National-USM Ko Samui
50h 10m2 stops Seattle/Tacoma Intl Singapore Changi
Multiple Airlines Logo
1:30 pm - 8:00 pmUSM  Ko Samui-DCA Washington, D.C. Reagan-National
65h 30m3 stops Singapore Changi Tokyo Narita Los Angeles
$9,145Multiple Airlines
Booking Insights

Price, demand and travel trends for Washington, D.C. Reagan-National Airport to Ko Samui flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Washington, D.C. Reagan-National Airport to Ko Samui with more confidence.

What is the cheapest airline to fly from Washington, D.C. Reagan-National Airport to Ko Samui?

Cathay Pacific ($1,538) offered the cheapest round-trip ticket from Washington, D.C. Reagan-National Airport to Ko Samui in the last 5 days.

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Expert advice

Expert advice for your flight from Reagan-National to Ko Samui

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on American Airlines and JetBlue

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Stefanie Waldek

Stefanie Waldek

Expert on Delta

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more

Key details for Washington, D.C. Reagan-National Airport to Ko Samui flights

Cheapest flight

$739
Flight from Washington, D.C. Reagan-National Airport to Ko Samui

When to book flights from Reagan-National to Ko Samui

Are your dates flexible? Find out the best times to travel from Reagan-National to Ko Samui based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Washington, D.C. Reagan-National Airport to Ko Samui flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

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

    Flights from Washington, D.C. Reagan-National Airport to Ko Samui usually depart from Washington, D.C. Reagan-National (DCA) and arrive at Ko Samui (USM).

  • What popular places can I visit in Ko Samui?

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

  • Do I need a passport to fly from Washington, D.C. Reagan-National Airport 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.

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

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

  • What car rental options are available at Ko Samui Airport (USM)?

    Ko Samui Airport (USM) hosts 5 major car rental companies, with daily rates starting from around $14 for economy cars. Top options include:
    · Drive Car Rental
    · Alamo
    · Sixt
    · Enterprise Rent-A-Car
    · Hertz

Your guide to booking Washington, D.C. Reagan-National Airport to Ko Samui flights

Get tips on when to book, when to fly and what to know before your trip.

Everything you need to know for your flight from Reagan-National to Ko Samui

Information on your arrival and departure airports

Reagan Washington National Airport (DCA)
Ko Samui (USM)