DCA - USM

$1,410 Find Cheap Flights from Reagan Washington National Airport to Ko Samui

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Reagan-National to Ko Samui departing on 4/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Ko Samui

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Ko Samui, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Ko Samui, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$1,410
Cathay Pacific
Thu 4/9Wed 4/22
DCA - USM • 2 stops
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
JetBlue's free Wi-Fi and live TV enhance long flights.
Delta's Wi-Fi is free for SkyMiles members on most flights.
Expert advice
Expert advice
Expert advice
Expert advice
Nonstop flights
Not available
There are currently no direct flights between Reagan-National and Ko Samui. You'll need at least 2 connections.
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American Airlines
Most punctual • 79% on-time
Morning flights
Best time • Fewest delays
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Ko Samui!
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Expert advice
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Reagan-National to Ko Samui that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Thu, Apr 9 - Wed, Apr 22
Cathay Pacific Logo
11:36 am - 7:40 pm
DCA
-
USM
45h 04m
2 stops
Cathay Pacific Logo
11:55 am - 7:05 pm
USM
-
DCA
42h 10m
2 stops
$1,410Cathay Pacific
Wed, Apr 8 - Tue, Apr 21
Cathay Pacific Logo
6:59 pm - 7:40 pm
DCA
-
USM
37h 41m
2 stops
Cathay Pacific Logo
11:55 am - 7:05 pm
USM
-
DCA
42h 10m
2 stops
$1,411Cathay Pacific
Fri, Apr 10 - Wed, Apr 22
Cathay Pacific Logo
6:59 pm - 7:40 pm
DCA
-
USM
37h 41m
2 stops
Cathay Pacific Logo
11:55 am - 10:59 pm
USM
-
DCA
46h 04m
2 stops
$1,429Cathay Pacific
Sun, Apr 12 - Sun, Apr 19
Multiple Airlines Logo
11:36 am - 7:40 pm
DCA
-
USM
45h 04m
2 stops
Multiple Airlines Logo
11:55 am - 8:35 pm
USM
-
DCA
43h 40m
2 stops
$1,438Multiple Airlines
Thu, Apr 9 - Thu, Apr 23
Cathay Pacific Logo
11:36 am - 7:40 pm
DCA
-
USM
45h 04m
2 stops
Cathay Pacific Logo
11:55 am - 7:05 pm
USM
-
DCA
42h 10m
2 stops
$1,460Cathay Pacific
Wed, May 6 - Thu, May 14
Cathay Pacific Logo
6:59 pm - 7:40 pm
DCA
-
USM
37h 41m
2 stops
Cathay Pacific Logo
11:55 am - 7:05 pm
USM
-
DCA
42h 10m
2 stops
$1,461Cathay Pacific
Wed, Apr 8 - Thu, Apr 23
Cathay Pacific Logo
6:59 pm - 7:40 pm
DCA
-
USM
37h 41m
2 stops
Cathay Pacific Logo
11:55 am - 7:05 pm
USM
-
DCA
42h 10m
2 stops
$1,465Cathay Pacific
Tue, Apr 7 - Thu, Apr 23
Cathay Pacific Logo
11:36 am - 7:40 pm
DCA
-
USM
45h 04m
2 stops
Cathay Pacific Logo
11:55 am - 7:05 pm
USM
-
DCA
42h 10m
2 stops
$1,488Cathay Pacific
Fri, Apr 10 - Fri, Apr 17
Multiple Airlines Logo
6:59 pm - 7:40 pm
DCA
-
USM
37h 41m
2 stops
Multiple Airlines Logo
11:55 am - 5:41 pm
USM
-
DCA
40h 46m
2 stops
$1,505Multiple Airlines
Fri, Apr 10 - Thu, Apr 23
Cathay Pacific Logo
6:59 pm - 7:40 pm
DCA
-
USM
37h 41m
2 stops
Cathay Pacific Logo
11:55 am - 7:05 pm
USM
-
DCA
42h 10m
2 stops
$1,510Cathay Pacific
Booking Insights

KAYAK's insights & trends for Reagan-National to Ko Samui flights

Get data-powered insights and trends into flights from Reagan-National to Ko Samui to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Reagan Washington National Airport to Ko Samui?

The average price of all round-trip flights from Washington, D.C. Reagan-National Airport to Ko Samui clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Ko Samui on a Tuesday and more expensive on a Sunday. On your return trip to Reagan Washington National Airport, you should consider flying back on a Tuesday, and avoid Sundays for better deals.

Expert advice

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

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
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.

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.

Good to know

Cheapest flight$1,410
Flight from Reagan Washington 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
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Reagan Washington National Airport to Ko Samui flights

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Reagan-National Airport to Ko Samui was $1,410 for a round-trip ticket.

  • Do I need a passport to fly between Reagan Washington National Airport and Ko Samui?

    Yes, you’ll need a passport to travel to Ko Samui from Reagan Washington National Airport.

  • Which airports will I be using when flying from Reagan Washington National Airport to Ko Samui?

    On your way to Ko Samui, you’ll fly out from Washington, D.C. Reagan-National. You’ll be landing at Ko Samui.

  • Which aircraft models fly most regularly from Reagan Washington National Airport to Ko Samui?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Reagan Washington National Airport to Ko Samui?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Reagan Washington National Airport to Ko Samui.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Reagan Washington National Airport to Ko Samui?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ko Samui from Reagan Washington National Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Reagan Washington National Airport to Ko Samui?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ko Samui with an airline and back to Reagan Washington National Airport with another airline. Booking your flights between Reagan Washington National Airport and USM can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Reagan Washington National Airport to Ko Samui?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ko Samui from Reagan Washington National Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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

Information on your arrival and departure airports