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Ko Phi Phi

$450+ 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 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — HKT
ago 4 — ago 111
seg 8/4
seg 8/11
1 adult, Economy
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Cheap 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 julho 30, 2025.

Round-trip from

$825
(oojo)

One-way from

$450
(Booking.com)

Popular in

June

Cheapest in

October

Average price

$1,478
From Washington, D.C. Dulles Intl to Ko Phi Phi
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One-way flight from Washington, D.C. Dulles Intl to Ko Phi Phi
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Highest demand for flights based on searches. 8% potential increase in price ($119 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find 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 julho 30, 2025.

This oojo deal was found by Cheapflights users on 7/30. 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.
ter 10/2111:00 pmIAD - HKT
1 stop31h 45mAir China
qui 10/306:25 pmHKT - IAD
1 stop36h 05mAir China
Deal found 7/30$825
This Sembo deal was found by Cheapflights users on 7/29. 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 Sembo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 8/2512:20 pmIAD - HKT
2 stops33h 40mMultiple Airlines
seg 9/82:45 pmHKT - IAD
2 stops30h 20mMultiple Airlines
Deal found 7/29$938
This Booking.com deal was found by Cheapflights users on 7/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 9/119:40 pmIAD - HKT
2 stops31h 05mIndiGo
qui 9/1810:50 pmHKT - IAD
2 stops47h 55mIndiGo
Deal found 7/29$946
This oojo deal was found by Cheapflights users on 7/29. 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.
dom 11/911:00 amIAD - HKT
1 stop33h 10mAir India
seg 11/176:10 pmHKT - IAD
1 stop24h 40mAir India
Deal found 7/29$947
This Gotogate deal was found by Cheapflights users on 7/30. 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.
seg 9/2210:05 pmIAD - HKT
1 stop33h 20mEtihad Airways
ter 9/309:30 amHKT - IAD
1 stop41h 40mEtihad Airways
Deal found 7/30$949
This FlightHub deal was found by Cheapflights users on 7/29. 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.
seg 10/61:30 pmIAD - HKT
1 stop38h 50mTurkish Airlines
ter 10/2810:25 pmHKT - IAD
1 stop25h 20mTurkish Airlines
Deal found 7/29$972
This FlightHub deal was found by Cheapflights users on 7/28. 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.
qua 11/1911:50 amIAD - HKT
1 stop45h 50mKorean Air
ter 12/1611:20 pmHKT - IAD
2 stops31h 51mKorean Air
Deal found 7/28$1,029
This Delta deal was found by Cheapflights users on 7/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 9/116:00 amIAD - HKT
2 stops29h 10mDelta
qui 9/1811:25 pmHKT - IAD
2 stops35h 13mDelta
Deal found 7/28$1,069
This oojo deal was found by Cheapflights users on 7/29. 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.
qui 9/119:00 pmIAD - HKT
1 stop23h 50mQatar Airways
qui 9/188:25 pmHKT - IAD
1 stop30h 15mQatar Airways
Deal found 7/29$1,081

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 julho 30, 2025.
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

ter 10/21

11:00 pm-5:45 pm

1 stop31h 45m

Phuket City

qui 10/30

6:25 pm-7:30 pm

1 stop36h 05m

$825

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

seg 8/25

12:20 pm-9:00 am

2 stops33h 40m

Phuket City

seg 9/8

2:45 pm-10:05 am

2 stops30h 20m

$938

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

qui 9/11

9:40 pm-3:45 pm

2 stops31h 05m

Phuket City

qui 9/18

10:50 pm-11:45 am

2 stops47h 55m

$946

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

seg 9/22

10:05 pm-6:25 pm

1 stop33h 20m

Phuket City

ter 9/30

9:30 am-4:10 pm

1 stop41h 40m

$949

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

seg 10/6

1:30 pm-3:20 pm

1 stop38h 50m

Phuket City

ter 10/28

10:25 pm-12:45 pm

1 stop25h 20m

$972

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

seg 8/25

6:00 am-10:10 pm

2 stops29h 10m

Phuket City

qua 9/3

11:25 pm-5:34 pm

2 stops29h 09m

$1,029

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

qui 9/11

9:00 pm-7:50 am

1 stop23h 50m

Phuket City

qui 9/18

8:25 pm-3:40 pm

1 stop30h 15m

$1,081

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

sex 8/15

1:30 pm-9:35 pm

2 stops45h 05m

$450

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

sex 8/15

10:05 pm-10:40 am

3 stops49h 35m

$506

Washington, D.C.Phuket City

IAD - HKT

IADHKT

Washington, D.C. Dulles Intl

dom 8/10

11:00 am-6:50 pm

1 stop20h 50m

$576

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 13 results
1
2

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

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Ko Phi Phi?

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Ko Phi Phi. Price data was last updated on July 25, 2025.

The best time to book flights from Washington, D.C. Dulles Intl Airport to Ko Phi Phi is 10 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 $1,101). Flying from Washington, D.C. Dulles Intl Airport to Ko Phi Phi in December is currently the most expensive (average of $1,759). 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.

What is the cheapest time of day to fly from IAD to K33?

Find hourly flight availability from Dulles Intl to Ko Phi Phi. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated julho 30, 2025.

When flying from Washington, D.C. Dulles Intl Airport to Ko Phi Phi, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 julho 30, 2025.
See what other customers who have flown with Korean Air, Delta, and Qatar 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.
Korean Air
8.4
Very good
1,121 reviews

Boarding

8.5

Crew

8.7

Comfort

8.2

Overall

8.4

Food

8.1

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,121 reviews
Korean Air
8.4
Very good
1,121 reviews

Boarding

8.5

Crew

8.7

Comfort

8.2

Overall

8.4

Food

8.1

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Delta
8.0
Very good
7,980 reviews
Korean Air
8.4
Very good
1,121 reviews

Boarding

8.5

Crew

8.7

Comfort

8.2

Overall

8.4

Food

8.1

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Qatar Airways
7.4
Good
3,607 reviews
Korean Air
8.4
Very good
1,121 reviews

Boarding

8.5

Crew

8.7

Comfort

8.2

Overall

8.4

Food

8.1

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Etihad Airways
7.4
Good
1,230 reviews
Korean Air
8.4
Very good
1,121 reviews

Boarding

8.5

Crew

8.7

Comfort

8.2

Overall

8.4

Food

8.1

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Turkish Airlines
7.3
Good
3,928 reviews
Korean Air
8.4
Very good
1,121 reviews

Boarding

8.5

Crew

8.7

Comfort

8.2

Overall

8.4

Food

8.1

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

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.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Ko Phi Phi one-way?

    To fly one-way, consider booking your trip with IndiGo, which is currently one of the cheapest options available, starting at $450. Qatar Airways flights start at $576 while deals on Etihad Airways start at $589 one-way.

  • 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 $1,101). Flying from Washington, D.C. Dulles Intl Airport to Ko Phi Phi in December is currently the most expensive (average of $1,759). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 5 airlines flying from Dulles Intl to Ko Phi Phi

Discover the top 5 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 julho 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$928Average$1,145FlexibilityNo cancel feeOn-time77%
Air IndiaCheapest$955Average$1,081FlexibilityNo cancel feeOn-timeN/A
Etihad AirwaysCheapest$1,002Average$1,142FlexibilityNo cancel feeOn-time75%
Qatar AirwaysCheapest$1,079Average$1,399FlexibilityNo cancel feeOn-time68%
EmiratesCheapest$1,130Average$1,300FlexibilityNo cancel feeOn-time75%

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