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Cheap flights from Dulles Intl (IAD) to Koh Samui (USM) from $1,656

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/8. 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.
IAD — USM
May 7 — May 141
From?
To?
Tue 5/7
Tue 5/14
1 adult, Economy
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Cheap flight deals from Dulles Intl to Koh Samui

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Koh Samui (USM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 2, 2024.

Round-trip from

$1,045
From Washington, D.C. Dulles Intl to Ko Samui
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What is the cheapest day to fly round-trip from Washington, D.C. Dulles Intl Airport to Koh Samui?

Flights from Washington, D.C. Dulles Intl Airport to Koh Samui are found to be more expensive on Friday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Koh Samui.

When is the cheapest time to fly from Washington, D.C. Dulles Intl Airport to Koh Samui (IAD - USM)?

It’s optimal to fly from Washington, D.C. Dulles Intl Airport to Koh Samui at noon. By choosing this option you can save up to 27% on the cost of your flight, compared to a flight in the morning.

Cheap Turkish Airlines flights from Dulles Intl to Koh Samui

Explore cheap flight options specifically provided by Turkish Airlines for the route between Dulles Intl and Koh Samui. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 2, 2024.
Peruse some of the lowest-priced Turkish Airlines flights we've found from Washington, D.C. to Koh Samui. Come back soon if you're not finding the exact deal you're looking for.
Mon 7/89:50 pmIAD - USM
2 stops33h 10mTurkish Airlines
Tue 7/304:25 pmUSM - IAD
2 stops38h 30mTurkish Airlines
Deal found 5/1$1,656
Tue 6/254:40 pmIAD - USM
2 stops38h 40mTurkish Airlines
Tue 7/231:30 pmUSM - IAD
2 stops36h 15mTurkish Airlines
Deal found 5/1$1,698
Fri 6/284:40 pmIAD - USM
2 stops41h 35mTurkish Airlines
Wed 7/241:30 pmUSM - IAD
2 stops41h 25mTurkish Airlines
Deal found 5/1$1,751

Cheap Singapore Airlines flights from Dulles Intl to Koh Samui

Explore cheap flight options specifically provided by Singapore Airlines for the route between Dulles Intl and Koh Samui. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 2, 2024.
Some of the best deals we've found on Singapore Airlines flights traveling from Washington, D.C. to Koh Samui. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.
Mon 7/85:43 pmIAD - USM
3 stops64h 32mSingapore Airlines
Tue 7/304:25 pmUSM - IAD
3 stops48h 15mSingapore Airlines
Deal found 5/1$3,305
Fri 6/287:10 amIAD - USM
3 stops48h 10mSingapore Airlines
Wed 7/241:30 pmUSM - IAD
3 stops62h 05mSingapore Airlines
Deal found 5/1$3,844

Cheap Dulles Intl to Koh Samui flights in May & June 2024

Find cheap flight options from Dulles Intl to Koh Samui specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,864,334 searches. Prices were last updated on May 2, 2024.
Scroll through some of the best deals on flights from Washington, D.C. to Koh Samui in 2024. Check back regularly for other flight deals.
Tue 6/254:40 pmIAD - USM
2 stops38h 40mTurkish Airlines
Tue 7/231:30 pmUSM - IAD
2 stops36h 15mTurkish Airlines
Deal found 5/1$1,698
Fri 6/284:40 pmIAD - USM
2 stops41h 35mTurkish Airlines
Wed 7/241:30 pmUSM - IAD
2 stops41h 25mTurkish Airlines
Deal found 5/1$1,751
Fri 6/289:50 pmIAD - USM
2 stops33h 30mMultiple Airlines
Wed 7/243:50 pmUSM - IAD
3 stops35h 20mMultiple Airlines
Deal found 5/1$2,193
Tue 6/256:50 pmIAD - USM
3 stops26h 45mMultiple Airlines
Tue 7/231:30 pmUSM - IAD
2 stops36h 15mMultiple Airlines
Deal found 5/1$2,469
Tue 6/256:50 pmIAD - USM
3 stops26h 45mMultiple Airlines
Tue 7/2312:10 pmUSM - IAD
3 stops31h 35mMultiple Airlines
Deal found 5/1$2,569
Fri 6/287:10 amIAD - USM
3 stops48h 10mSingapore Airlines
Wed 7/241:30 pmUSM - IAD
3 stops62h 05mSingapore Airlines
Deal found 5/1$3,844

Dulles Intl to Koh Samui 2024 flight deals

Discover exclusive flight deals for travel between Dulles Intl and Koh Samui in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 2, 2024.
Scroll through some of the best deals on flights from Washington, D.C. to Koh Samui in 2024. Check back regularly for other flight deals.
Mon 7/89:50 pmIAD - USM
2 stops33h 10mTurkish Airlines
Tue 7/304:25 pmUSM - IAD
2 stops38h 30mTurkish Airlines
Deal found 5/1$1,656
Tue 6/254:40 pmIAD - USM
2 stops38h 40mTurkish Airlines
Tue 7/231:30 pmUSM - IAD
2 stops36h 15mTurkish Airlines
Deal found 5/1$1,698
Thu 11/1410:30 amIAD - USM
2 stops43h 00mEmirates
Mon 11/1810:05 amUSM - IAD
2 stops34h 05mEmirates
Deal found 5/1$1,705
Fri 6/284:40 pmIAD - USM
2 stops41h 35mTurkish Airlines
Wed 7/241:30 pmUSM - IAD
2 stops41h 25mTurkish Airlines
Deal found 5/1$1,751
Fri 6/289:50 pmIAD - USM
2 stops33h 30mMultiple Airlines
Wed 7/243:50 pmUSM - IAD
3 stops35h 20mMultiple Airlines
Deal found 5/1$2,193
Mon 7/810:55 amIAD - USM
3 stops34h 20mMultiple Airlines
Tue 7/301:30 pmUSM - IAD
2 stops36h 15mMultiple Airlines
Deal found 5/1$2,348
Tue 6/256:50 pmIAD - USM
3 stops26h 45mMultiple Airlines
Tue 7/231:30 pmUSM - IAD
2 stops36h 15mMultiple Airlines
Deal found 5/1$2,469
Tue 6/256:50 pmIAD - USM
3 stops26h 45mMultiple Airlines
Tue 7/2312:10 pmUSM - IAD
3 stops31h 35mMultiple Airlines
Deal found 5/1$2,569
Mon 7/85:43 pmIAD - USM
3 stops64h 32mSingapore Airlines
Tue 7/304:25 pmUSM - IAD
3 stops48h 15mSingapore Airlines
Deal found 5/1$3,305

Find flights from Dulles Intl to Koh Samui within your budget

Customize your flight search to find flights from Dulles Intl to Koh Samui that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 2, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$1,656 - $3,844

Route

Depart

Return

Price

Washington, D.C. Dulles IntlKo Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Mon 7/8

2 stops33h 10m

Ko Samui

Tue 7/30

2 stops38h 30m

$1,656

Washington, D.C. Dulles IntlKo Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Tue 6/25

2 stops38h 40m

Ko Samui

Tue 7/23

2 stops36h 15m

$1,698

Washington, D.C. Dulles IntlKo Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Fri 6/28

2 stops41h 35m

Ko Samui

Wed 7/24

2 stops41h 25m

$1,751

Washington, D.C. Dulles IntlKo Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Fri 6/28

2 stops33h 30m

Ko Samui

Wed 7/24

3 stops35h 20m

$2,193

Washington, D.C. Dulles IntlKo Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Mon 7/8

3 stops34h 20m

Ko Samui

Tue 7/30

2 stops36h 15m

$2,348

Washington, D.C. Dulles IntlKo Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Tue 6/25

3 stops26h 45m

Ko Samui

Tue 7/23

2 stops36h 15m

$2,469

Washington, D.C. Dulles IntlKo Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Tue 6/25

3 stops26h 45m

Ko Samui

Tue 7/23

3 stops31h 35m

$2,569

Washington, D.C. Dulles IntlKo Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Mon 7/8

3 stops64h 32m

Ko Samui

Tue 7/30

3 stops48h 15m

$3,305

Washington, D.C. Dulles IntlKo Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Fri 6/28

3 stops48h 10m

Ko Samui

Wed 7/24

3 stops62h 05m

$3,844

Flights are sorted by cheapest first

Deals found on 5/1

When is the cheapest time to fly from Washington, D.C. Dulles Intl Airport to Koh Samui?

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Koh Samui. Price data was last updated on April 28, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Koh Samui flight should consider departing on Tuesday evenings when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
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Average price of flights to Koh Samui by month

Plan your trip from Dulles Intl to Koh Samui by taking into account the cheapest months to travel. The average price of a one-way flight from Dulles Intl to Koh Samui is currently $0 while a round-trip flight costs $2,426. Price data was last updated on April 28, 2024.

Temperature and rainfall in Koh Samui by month

Plan your trip to Koh Samui by taking into account the average temperature and rainfall totals by month.

USM

Temperature

80.6 - 84.2 °F

Reviews of airlines servicing Koh Samui

Get insights into the airlines that provide service to Koh Samui. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Koh Samui. Reviews last updated May 2, 2024.
Peruse reviews from past customers who have flown with Turkish Airlines and Singapore Airlines from Washington, D.C. to Koh Samui to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.3
Very good
1,470 reviews
Check prices

Food

7.8

Overall

8.3

Boarding

8.4

Entertainment

8.2

Comfort

8.1

Crew

8.7

Reviews

1 / 10

Everything went smoothly, the staff was friendly, the special meal was correct. It was with Singapore Airlines for the first two legs (Penang to Singapore then Singapore to LAX). The final leg of LAX to BWI was with United.

Singapore Airlines
8.3
Very good
1,470 reviews
Singapore Airlines
8.3
Very good
1,470 reviews
Check prices

Food

7.8

Overall

8.3

Boarding

8.4

Entertainment

8.2

Comfort

8.1

Crew

8.7

Reviews

1 / 10

Everything went smoothly, the staff was friendly, the special meal was correct. It was with Singapore Airlines for the first two legs (Penang to Singapore then Singapore to LAX). The final leg of LAX to BWI was with United.

Turkish Airlines
7.4
Good
3,705 reviews
Singapore Airlines
8.3
Very good
1,470 reviews
Check prices

Food

7.8

Overall

8.3

Boarding

8.4

Entertainment

8.2

Comfort

8.1

Crew

8.7

Reviews

1 / 10

Everything went smoothly, the staff was friendly, the special meal was correct. It was with Singapore Airlines for the first two legs (Penang to Singapore then Singapore to LAX). The final leg of LAX to BWI was with United.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Koh Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Koh Samui from Washington, D.C. Dulles Intl?

    Located just 2.1 mi from the city center, Ko Samui is the airport most travelers will use when flying to Koh Samui from Washington, D.C. Dulles Intl. Booking flights from Washington, D.C. Dulles Intl to Ko Samui (USM) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. Dulles Intl from 1 airline.

  • Can I find flights from Washington, D.C. Dulles Intl Airport to Koh Samui for under $1,700 on Cheapflights?

    Yes, there are multiple flights from Washington, D.C. Dulles Intl Airport to Koh Samui for under $1,700. The cheapest flight booked recently is on Turkish Airlines for just $1,656, but on average you can expect to pay $2,425.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Koh Samui round-trip?

    Cheapflights users have booked flights from Washington, D.C. Dulles Intl Airport to Koh Samui round-trip from $1,656. Another airline that can offer you cheap pricing is Singapore Airlines.

  • What does IAD to USM mean?

    Washington, D.C. Dulles Intl Airport is IAD and Ko Samui Airport is USM. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service.

  • Can I find deals for flights from Dulles Intl to Koh Samui that include extra baggage allowance?

    The amount of baggage you can bring on your Dulles Intl to Koh Samui flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Dulles Intl to Koh Samui with specific airlines?

    Yes, Cheapflights allows you to browse and filter Dulles Intl to Koh Samui flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Dulles Intl to Koh Samui that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Koh Samui flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Koh Samui?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Koh Samui.

  • Can I find deals for business class flights from Dulles Intl to Koh Samui?

    Yes. Cheapflights offers flight deals from Dulles Intl to Koh Samui by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Dulles Intl to Koh Samui that allow pets onboard?

    Many airlines flying from Dulles Intl to Koh Samui offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Dulles Intl to Koh Samui?

    Yes, you can often find last-minute deals on Dulles Intl to Koh Samui flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Washington, D.C. Dulles Intl Airport to Koh Samui flight deals updated?

    The Washington, D.C. Dulles Intl Airport to Koh Samui flight deals you see on this page were last updated on 5/1.

See more FAQs

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Alternative routes for Dulles Intl to Koh Samui
See prices for flight routes from nearby airports that may be better suited for you.

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Top airline flying from Dulles Intl to Koh Samui

Discover the top airline that operate flights from Dulles Intl to Koh Samui. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 2, 2024.
AirlineCheapestAverageFlexibilityOn-time
Qatar AirwaysCheapest$1,412Average$1,499FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
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Search flights from Dulles Intl to Koh Samui by cabin class

Find flights from Dulles Intl to Koh Samui, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Dulles Intl to Koh Samui?

Cheapflights makes it easy to find Dulles Intl to Koh Samui flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Dulles Intl to Koh Samui?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Koh Samui from Dulles Intl.

Can Cheapflights find flights from Dulles Intl to Koh Samui with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Dulles Intl to Koh Samui, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Dulles Intl to Koh Samui become cheaper?

Yes! Start tracking prices for Dulles Intl to Koh Samui flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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