Find Deals on Flights from Washington Dulles Intl to Ko Samui (IAD - USM)

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights from Washington Dulles Intl to Ko Samui

(Round-trip)
Depart: Wed May 3 2017 Return: Wed May 10 2017 Trip spans 8 days
$1095
Select
Major Airline
Major Airline
IAD
9:25a
USM
1:55p
52h 30m
3 stops
USM
1:55a
IAD
8:58a
55h 03m
2 stops
Depart: Sat Aug 5 2017 Return: Sat Aug 12 2017 Trip spans 8 days
$1515
Select
Singapore Airlines
Singapore Airlines
IAD
6:15a
USM
5:55p
59h 40m
2 stops
USM
7:50a
IAD
9:35p
61h 45m
2 stops
Depart: Sat Jun 24 2017 Return: Sat Jul 22 2017 Trip spans 29 days
$1697
Select
Qatar Airways
Qatar Airways
IAD
5:30p
USM
4:05p
46h 35m
2 stops
USM
4:15p
IAD
10:10p
29h 55m
2 stops
Depart: Mon Jun 26 2017 Return: Sun Jul 23 2017 Trip spans 28 days
$1321
Select
Major Airline
Major Airline
IAD
2:55a
USM
3:00a
24h 05m
2 stops
USM
10:45a
IAD
11:40a
24h 55m
2 stops
Depart: Sun Jun 25 2017 Return: Fri Jul 21 2017 Trip spans 27 days
$1699
Select
Singapore Airlines
Singapore Airlines
IAD
5:00a
USM
5:55p
36h 55m
3 stops
USM
5:55a
IAD
2:43p
56h 48m
3 stops
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

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Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
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Airports
Origin

Washington
$1095
Destination

Ko Samui
$1095