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Ko Phi Phi

$483+ Cheap flights from Dulles Intl (IAD) to Ko Phi Phi, Thailand

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — HKT
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
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Cheap flight deals from Dulles Intl to Ko Phi Phi

Cheapest flights from Dulles Intl to Ko Phi Phi
Explore the most affordable flight options available from Dulles Intl to Ko Phi Phi. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.

This oojo deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/225:59 pm
IAD
-
HKT
2 stops36h 21m
Cathay Pacific
Tue 4/2811:50 am
HKT
-
IAD
2 stops46h 36m
Cathay Pacific
Deal found 2/2$941
This Expedia deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/311:10 am
IAD
-
HKT
2 stops46h 00m
Multiple Airlines
Tue 3/109:50 pm
HKT
-
IAD
2 stops47h 20m
Multiple Airlines
Deal found 2/1$957
This oojo deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1111:40 am
IAD
-
HKT
2 stops24h 20m
Qatar Airways
Wed 3/188:20 am
HKT
-
IAD
1 stop43h 35m
Qatar Airways
Deal found 2/1$968
This CrystalTravel deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/63:10 pm
IAD
-
HKT
1 stop21h 30m
Etihad Airways
Wed 5/209:20 pm
HKT
-
IAD
1 stop23h 25m
Etihad Airways
Deal found 2/3$970
This Cathay Pacific deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/225:59 pm
IAD
-
HKT
2 stops29h 51m
Multiple Airlines
Wed 5/611:50 am
HKT
-
IAD
2 stops28h 50m
Multiple Airlines
Deal found 2/2$974
This FlightHub deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/138:20 pm
IAD
-
HKT
1 stop24h 25m
Qatar Airways
Mon 4/272:45 pm
HKT
-
IAD
2 stops28h 55m
Qatar Airways
Deal found 2/1$977
This FlightHub deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/38:05 pm
IAD
-
HKT
2 stops35h 00m
Qatar Airways
Tue 3/108:20 am
HKT
-
IAD
1 stop43h 35m
Qatar Airways
Deal found 2/1$980
This Cathay Pacific deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/36:10 am
IAD
-
HKT
2 stops41h 40m
Multiple Airlines
Thu 10/1511:50 am
HKT
-
IAD
2 stops28h 10m
Multiple Airlines
Deal found 2/2$984
This oojo deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/185:59 pm
IAD
-
HKT
2 stops29h 51m
Cathay Pacific
Sat 4/2511:50 am
HKT
-
IAD
2 stops46h 36m
Cathay Pacific
Deal found 2/2$991
This oojo deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:20 pm
IAD
-
HKT
2 stops36h 55m
Singapore Airlines
Wed 5/68:10 pm
HKT
-
IAD
2 stops38h 59m
Singapore Airlines
Deal found 2/1$993
This oojo deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/911:41 am
IAD
-
HKT
2 stops36h 09m
Cathay Pacific
Wed 10/146:20 pm
HKT
-
IAD
2 stops51h 31m
Cathay Pacific
Deal found 2/1$999
This Gotogate deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/211:10 am
IAD
-
HKT
2 stops36h 50m
Multiple Airlines
Thu 12/1010:15 am
HKT
-
IAD
2 stops34h 55m
Multiple Airlines
Deal found 2/3$1,014

Find flight deals from Dulles Intl to Ko Phi Phi

Keep the following information in mind while searching for Dulles Intl to Ko Phi Phi flight deals. Data was last updated February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$941
(oojo)

One-way from

$483
(Cathay Pacific)

Popular in

December

Cheapest in

October

Average price

$1,247
Provider with most accurate pricing for Washington, D.C. (WAS)-Phuket City flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Phuket City flights.
Search Deals
From Washington, D.C. Dulles Intl to Ko Phi Phi
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Ko Phi Phi
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($210 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($79 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Ko Phi Phi 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 2,558,603 searches. Data last updated February 3, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Ko Phi Phi that are best for you.

Fly from

Dulles Intl

Fly to

Ko Phi Phi

Route

Depart

Return

Price

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

Sun 4/19

6:10 am-10:50 am

2 stops41h 40m

Phuket City

Fri 4/24

11:50 am-5:40 am

2 stops28h 50m

$1,024

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

Thu 2/19

2:35 pm-11:35 pm

1 stop21h 00m

Phuket City

Mon 3/2

3:10 am-9:05 am

1 stop41h 55m

$1,027

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

Mon 3/2

8:05 pm-12:55 pm

1 stop28h 50m

Phuket City

Mon 3/9

8:20 am-4:55 pm

1 stop43h 35m

$1,094

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

Fri 5/1

6:30 am-8:40 am

2 stops39h 10m

Phuket City

Sun 5/10

2:15 pm-7:35 am

2 stops28h 20m

$1,141

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

Thu 3/12

3:35 pm-6:15 am

1 stop27h 40m

Phuket City

Thu 3/19

3:10 am-10:05 am

1 stop41h 55m

$1,147

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

Sun 4/5

7:09 pm-10:50 am

2 stops28h 41m

Phuket City

Tue 4/14

11:50 am-11:28 pm

2 stops46h 38m

$1,172

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

Thu 2/19

11:50 am-10:10 pm

1 stop46h 20m

Phuket City

Mon 3/2

11:40 pm-7:09 pm

2 stops31h 29m

$1,177

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

Mon 4/6

7:59 pm-10:10 pm

2 stops39h 11m

Phuket City

Wed 4/15

11:25 pm-6:08 pm

2 stops29h 43m

$1,181

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

Thu 3/12

9:05 pm-6:55 pm

1 stop34h 50m

Phuket City

Fri 3/20

10:30 am-4:55 pm

2 stops41h 25m

$1,182

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

Mon 3/23

3:35 pm-1:00 pm

3 stops34h 25m

Phuket City

Tue 3/31

6:40 pm-3:40 pm

3 stops32h 00m

$1,218

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

Showing 1-10 of 21 results
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2
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Best time to book a flight from Dulles Intl to Ko Phi Phi

Have a flexible travel schedule? Discover the best time to fly to Ko Phi Phi from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Ko Phi Phi

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Ko Phi Phi?

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Ko Phi Phi (average of $960). Flying from Washington, D.C. Dulles Intl Airport to Ko Phi Phi in January is currently the most expensive (average of $1,160). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Ko Phi Phi?

Reviews of airlines servicing Ko Phi Phi

Get insights into the airlines that provide service to Ko Phi Phi. 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 Ko Phi Phi. Reviews last updated February 3, 2026.
See what other customers who have flown with Emirates, Qatar Airways, and Etihad Airways from Washington, D.C. Dulles Intl Airport to Ko Phi Phi have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Emirates
8.1
Very good
3,501 reviews

Entertainment

8.2

Food

7.9

Comfort

8.0

Crew

8.3

Boarding

8.1

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Emirates
8.1
Very good
3,501 reviews
Emirates
8.1
Very good
3,501 reviews

Entertainment

8.2

Food

7.9

Comfort

8.0

Crew

8.3

Boarding

8.1

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Qatar Airways
7.4
Good
3,729 reviews
Emirates
8.1
Very good
3,501 reviews

Entertainment

8.2

Food

7.9

Comfort

8.0

Crew

8.3

Boarding

8.1

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Etihad Airways
7.3
Good
1,380 reviews
Emirates
8.1
Very good
3,501 reviews

Entertainment

8.2

Food

7.9

Comfort

8.0

Crew

8.3

Boarding

8.1

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
JetBlue
7.2
Good
2,893 reviews
Emirates
8.1
Very good
3,501 reviews

Entertainment

8.2

Food

7.9

Comfort

8.0

Crew

8.3

Boarding

8.1

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Air India
5.5
Fair
2,972 reviews
Emirates
8.1
Very good
3,501 reviews

Entertainment

8.2

Food

7.9

Comfort

8.0

Crew

8.3

Boarding

8.1

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

Related info for your journey

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

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Ko Phi Phi?

    There are many flights that can get you from Washington, D.C. Dulles Intl Airport to Ko Phi Phi in 21h. Fly via Etihad Airways or Qatar Airways to get the fastest option. The distance between Washington, D.C. Dulles Intl Airport and Ko Phi Phi is about 9167 mi. This flight may include one or multiple stops.

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

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

  • How can I find direct flights from Dulles Intl to Ko Phi Phi?

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

  • Can I find deals for business class flights from Dulles Intl to Ko Phi Phi?

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

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Ko Phi Phi?

    Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Ko Phi Phi (average of $960). Flying from Washington, D.C. Dulles Intl Airport to Ko Phi Phi in January is currently the most expensive (average of $1,160). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 7 airlines flying from Dulles Intl to Ko Phi Phi

Discover the top 7 airlines that operate flights from Dulles Intl to Ko Phi Phi. 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 2,558,603 searches. Data last updated February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$664Average$1,143FlexibilityNo cancel feeOn-timeN/A
Air IndiaCheapest$955Average$974FlexibilityNo cancel feeOn-timeN/A
Qatar AirwaysCheapest$982Average$1,301FlexibilityNo cancel feeOn-time68%
Etihad AirwaysCheapest$1,015Average$1,224FlexibilityNo cancel feeOn-time75%
EmiratesCheapest$1,086Average$1,240FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$1,261Average$1,520FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$1,571Average$2,218FlexibilityNo cancel feeOn-time62%

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