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Phnom Penh

$1,177+ Cheap flights from Dulles Intl (IAD) to Phnom Penh (PNH)

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 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — PNH
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Phnom Penh Pochentong are usually found in September or October, booked 40 days in advance, depart on a Friday or Saturday and return on a Tuesday

Cheap flight deals from Dulles Intl to Phnom Penh

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Phnom Penh (PNH). 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 September 17, 2025.

Round-trip from

$2,130
(Mytrip)

One-way from

$1,177
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$1,350
From Washington, D.C. Dulles Intl to Phnom Penh Pochentong
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Phnom Penh Pochentong
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Highest demand for flights based on searches. 12% potential increase in price ($233 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($43 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Dulles Intl to Phnom Penh

Cheapest flights from Dulles Intl to Phnom Penh
Explore the most affordable flight options available from Dulles Intl to Phnom Penh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This oojo deal was found by Cheapflights users on 9/15. 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.
Thu 12/259:10 pmIAD - PNH
1 stop33h 15mEtihad Airways
Thu 1/227:50 pmPNH - IAD
1 stop32h 00mEtihad Airways
Deal found 9/15$1,837
This oojo deal was found by Cheapflights users on 9/15. 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.
Thu 12/259:10 pmIAD - PNH
1 stop33h 15mEtihad Airways
Fri 1/237:55 amPNH - IAD
1 stop43h 55mEtihad Airways
Deal found 9/15$1,869
This Mytrip deal was found by Cheapflights users on 9/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/49:00 pmIAD - PNH
3 stops33h 25mMultiple Airlines
Tue 4/78:30 pmPNH - IAD
3 stops35h 20mMultiple Airlines
Deal found 9/15$2,130
This Mytrip deal was found by Cheapflights users on 9/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/309:30 pmIAD - PNH
3 stops33h 55mMultiple Airlines
Thu 11/67:50 pmPNH - IAD
3 stops31h 45mMultiple Airlines
Deal found 9/15$2,138
This oojo deal was found by Cheapflights users on 9/15. 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 11/110:10 pmIAD - PNH
1 stop21h 20mEtihad Airways
Thu 11/207:50 pmPNH - IAD
1 stop32h 00mEtihad Airways
Deal found 9/15$2,152
This oojo deal was found by Cheapflights users on 9/15. 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.
Sun 12/219:10 pmIAD - PNH
1 stop33h 15mEtihad Airways
Mon 1/197:55 amPNH - IAD
1 stop43h 55mEtihad Airways
Deal found 9/15$2,355
This oojo deal was found by Cheapflights users on 9/15. 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 12/209:10 pmIAD - PNH
1 stop21h 20mEtihad Airways
Thu 1/157:50 pmPNH - IAD
1 stop32h 00mEtihad Airways
Deal found 9/15$2,592
This oojo deal was found by Cheapflights users on 9/15. 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 12/209:10 pmIAD - PNH
1 stop21h 20mEtihad Airways
Mon 1/197:55 amPNH - IAD
1 stop43h 55mEtihad Airways
Deal found 9/15$2,593

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Phnom Penh 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 September 17, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Phnom Penh that are best for you.

Fly from

Dulles Intl

Fly to

Phnom Penh

Route

Depart

Return

Price

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Sat 1/3

9:10 pm-6:30 am

1 stop21h 20m

Phnom Penh Pochentong

Thu 1/22

7:50 pm-3:50 pm

1 stop32h 00m

$1,400

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Thu 12/25

9:10 pm-6:25 pm

1 stop33h 15m

Phnom Penh Pochentong

Thu 1/22

7:50 pm-3:50 pm

1 stop32h 00m

$1,837

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Thu 12/25

9:10 pm-6:25 pm

1 stop33h 15m

Phnom Penh Pochentong

Fri 1/23

7:55 am-3:50 pm

1 stop43h 55m

$1,869

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Sat 11/1

10:10 pm-6:30 am

1 stop21h 20m

Phnom Penh Pochentong

Thu 11/20

7:50 pm-3:50 pm

1 stop32h 00m

$2,152

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Thu 10/30

12:00 pm-6:30 am

2 stops31h 30m

Phnom Penh Pochentong

Thu 11/6

7:50 pm-3:35 pm

3 stops31h 45m

$2,281

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Sat 12/20

9:10 pm-6:30 am

1 stop21h 20m

Phnom Penh Pochentong

Thu 1/15

7:50 pm-3:50 pm

1 stop32h 00m

$2,592

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Sat 12/20

9:10 pm-6:30 am

1 stop21h 20m

Phnom Penh Pochentong

Mon 1/19

7:55 am-3:50 pm

1 stop43h 55m

$2,593

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Sat 1/3

10:20 pm-6:30 am

2 stops44h 10m

Phnom Penh Pochentong

Thu 1/22

7:50 pm-3:50 pm

1 stop32h 00m

$2,607

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Thu 12/25

9:10 pm-6:25 pm

1 stop33h 15m

Phnom Penh Pochentong

Fri 1/23

7:55 am-8:30 pm

2 stops48h 35m

$2,781

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Sat 11/1

11:20 pm-6:30 am

2 stops44h 10m

Phnom Penh Pochentong

Thu 11/20

7:50 pm-3:50 pm

1 stop32h 00m

$2,997

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 15 results
1
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Best time to book a flight from Dulles Intl to Phnom Penh

Have a flexible travel schedule? Discover the best time to fly to Phnom Penh 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 Phnom Penh

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

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Phnom Penh. Price data was last updated on September 12, 2025.

The best time to book flights from Washington, D.C. Dulles Intl Airport to Phnom Penh is 40 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 Phnom Penh?

Currently, March is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Phnom Penh (average of $982). Flying from Washington, D.C. Dulles Intl Airport to Phnom Penh in June is currently the most expensive (average of $1,552). 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 PNH?

Find hourly flight availability from Dulles Intl to Phnom Penh. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. Dulles Intl Airport to Phnom Penh in the evening. If you’re flexible enough to do this you can expect to save up to 29% on your trip compared to booking a flight at noon.

Reviews of airlines servicing Phnom Penh

Get insights into the airlines that provide service to Phnom Penh. 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 Phnom Penh. Reviews last updated September 17, 2025.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Phnom Penh, such as Korean Air, Singapore Airlines, and Qatar Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,140 reviews

Boarding

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Food

8.1

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Korean Air
8.4
Very good
1,140 reviews
Korean Air
8.4
Very good
1,140 reviews

Boarding

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Food

8.1

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Singapore Airlines
8.1
Very good
1,367 reviews
Korean Air
8.4
Very good
1,140 reviews

Boarding

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Food

8.1

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Qatar Airways
7.4
Good
3,622 reviews
Korean Air
8.4
Very good
1,140 reviews

Boarding

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Food

8.1

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Etihad Airways
7.4
Good
1,251 reviews
Korean Air
8.4
Very good
1,140 reviews

Boarding

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Food

8.1

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Malaysia Airlines
7.3
Good
278 reviews
Korean Air
8.4
Very good
1,140 reviews

Boarding

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Food

8.1

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Phnom Penh. 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 Phnom Penh from Washington, D.C. Dulles Intl?

    For a flight from Washington, D.C. Dulles Intl to Phnom Penh, you will be flying into Pochentong. Phnom Penh Pochentong (PNH) is just 5.0 mi from the center of the city. Pochentong is the only Phnom Penh airport and it handles 0 inbound flights from Washington, D.C. Dulles Intl per day. 5 airlines have flights to Phnom Penh Pochentong from Washington, D.C. Dulles Intl on a regular basis.

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

    Airlines like Etihad Airways fly from Washington, D.C. Dulles Intl Airport to Phnom Penh in about 21h 20m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 8939 mi.

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

    Etihad Airways, at $999, was found to be the cheapest airline from Washington, D.C. Dulles Intl Airport to Phnom Penh.Alternate airlines to your destination round-trip include Qatar Airways and Korean Air. Etihad Airways is currently priced 39% below the average price you’ll pay for this route.

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

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

  • How can I find direct flights from Dulles Intl to Phnom Penh?

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

  • Can I find deals for business class flights from Dulles Intl to Phnom Penh?

    Yes. Cheapflights offers flight deals from Dulles Intl to Phnom Penh 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 Phnom Penh?

    Currently, March is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Phnom Penh (average of $982). Flying from Washington, D.C. Dulles Intl Airport to Phnom Penh in June is currently the most expensive (average of $1,552). 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

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Alternative routes for Dulles Intl to Phnom Penh

See prices for flight routes from nearby airports that may be better suited for you.
Baltimore to Phnom Penh flights
Reagan-National to Phnom Penh flights

Top 5 airlines flying from Dulles Intl to Phnom Penh

Discover the top 5 airlines that operate flights from Dulles Intl to Phnom Penh. 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest$999Average$1,349FlexibilityNo cancel feeOn-time75%
Qatar AirwaysCheapest$1,299Average$1,560FlexibilityNo cancel feeOn-time68%
Korean AirCheapest$1,301Average$1,606FlexibilityNo cancel feeOn-time81%
Singapore AirlinesCheapest$1,311Average$1,405FlexibilityNo cancel feeOn-time81%
Malaysia AirlinesCheapest$1,334Average$1,382FlexibilityNo cancel feeOn-time67%

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