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Phnom Penh

$575+ 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 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — PNH
abr. 5 — abr. 121
sáb. 4/5
sáb. 4/12
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 October or January, booked 68 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 marzo 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,283
(China Airlines)

One-way from

$575
(Kiwi.com)

Popular in

July

Cheapest in

October

Average price

$1,581
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Phnom Penh Pochentong flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Phnom Penh Pochentong flights.
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From Washington, D.C. Dulles Intl to Phnom Penh Pochentong
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One-way flight from Washington, D.C. Dulles Intl to Phnom Penh Pochentong
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Highest demand for flights based on searches. 6% potential increase in price ($118 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in March 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 marzo 31, 2025.

This Travelocity deal was found by Cheapflights users on 3/30. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/295:00 pmIAD - PNH
2 stops37h 45mMultiple Airlines
mié. 2/411:45 amPNH - IAD
2 stops39h 15mMultiple Airlines
Deal found 3/30$1,156
This oojo deal was found by Cheapflights users on 3/30. 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.
mié. 4/29:00 pmIAD - PNH
2 stops33h 25mMalaysia Airlines
mar. 4/2211:10 amPNH - IAD
2 stops32h 30mMalaysia Airlines
Deal found 3/30$1,304
This Gurufare deal was found by Cheapflights users on 3/30. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/117:59 pmIAD - PNH
2 stops58h 41mSingapore Airlines
dom. 8/312:05 pmPNH - IAD
3 stops60h 54mSingapore Airlines
Deal found 3/30$1,357
This FlightHub deal was found by Cheapflights users on 3/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/2510:05 pmIAD - PNH
1 stop22h 15mEtihad Airways
mar. 11/48:40 amPNH - IAD
1 stop43h 25mEtihad Airways
Deal found 3/30$1,369
This Ovago deal was found by Cheapflights users on 3/29. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/1411:00 pmIAD - PNH
1 stop37h 05mAir China
lun. 10/2712:25 amPNH - IAD
1 stop30h 05mAir China
Deal found 3/29$1,475
This StudentUniverse deal was found by Cheapflights users on 3/29. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/3112:50 pmIAD - PNH
1 stop22h 35mKorean Air
vie. 11/2111:45 pmPNH - IAD
1 stop22h 05mKorean Air
Deal found 3/29$1,649
This StudentUniverse deal was found by Cheapflights users on 3/30. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/299:05 pmIAD - PNH
1 stop31h 20mQatar Airways
mar. 1/275:10 pmPNH - IAD
1 stop27h 10mQatar Airways
Deal found 3/30$1,749
This StudentUniverse deal was found by Cheapflights users on 3/29. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/3110:55 amIAD - PNH
1 stop42h 40mEmirates
mié. 4/28:50 pmPNH - IAD
1 stop46h 50mEmirates
Deal found 3/29$1,939
This oojo deal was found by Cheapflights users on 3/30. 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.
dom. 6/89:00 amIAD - PNH
2 stops52h 15mPhilippine Airlines
sáb. 6/141:15 amPNH - IAD
2 stops41h 12mPhilippine Airlines
Deal found 3/30$2,599

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 marzo 31, 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

lun. 4/7

5:58 pm-9:50 am

2 stops28h 52m

Phnom Penh Pochentong

jue. 4/17

5:10 pm-4:30 pm

2 stops34h 20m

$1,283

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

mié. 4/9

11:00 am-10:00 am

2 stops36h 00m

Phnom Penh Pochentong

jue. 4/17

11:10 am-3:40 pm

2 stops39h 30m

$1,331

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

sáb. 6/28

10:05 pm-8:35 am

2 stops47h 30m

Phnom Penh Pochentong

dom. 7/27

7:25 pm-4:10 pm

2 stops31h 45m

$1,428

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

lun. 4/7

7:31 am-1:10 pm

3 stops42h 39m

Phnom Penh Pochentong

jue. 4/17

6:55 pm-5:40 am

2 stops45h 45m

$1,658

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

lun. 5/12

11:00 am-4:15 pm

1 stop42h 15m

Phnom Penh Pochentong

lun. 5/19

5:40 pm-8:40 am

1 stop26h 00m

$2,059

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

vie. 6/20

11:00 pm-11:10 am

3 stops49h 10m

Phnom Penh Pochentong

lun. 7/7

12:15 pm-7:30 pm

2 stops42h 15m

$2,109

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

jue. 4/3

10:55 am-4:35 pm

2 stops42h 40m

Phnom Penh Pochentong

sáb. 4/5

8:50 pm-8:40 am

1 stop46h 50m

$2,176

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

lun. 4/7

1:15 pm-10:10 pm

1 stop21h 55m

Phnom Penh Pochentong

jue. 4/17

11:30 pm-4:37 pm

2 stops28h 07m

$2,213

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

dom. 6/8

9:00 am-12:15 am

2 stops52h 15m

Phnom Penh Pochentong

sáb. 6/14

1:15 am-7:27 am

2 stops41h 12m

$2,599

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

dom. 6/8

7:15 am-10:15 am

2 stops40h 00m

Phnom Penh Pochentong

dom. 6/15

6:30 pm-6:50 am

2 stops47h 20m

$5,532

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/30

Showing 1-10 of 13 results
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Compare providers for flights from Dulles Intl to Phnom Penh

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Phnom Penh in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
FlightnetworkPrice Accuracy2 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
GotogatePrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*2 stars
SmartFaresPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Phnom Penh flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Phnom Penh flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Phnom Penh flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Phnom Penh flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Phnom Penh flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 March 28, 2025.

The best time to book flights from Washington, D.C. Dulles Intl Airport to Phnom Penh is 68 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 $995). Flying from Washington, D.C. Dulles Intl Airport to Phnom Penh in June is currently the most expensive (average of $1,582). 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 marzo 31, 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.

Rainfall in Phnom Penh by month

Plan your trip to Phnom Penh by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Phnom Penh ranges from 0.0 - 9.8 inches per month. October is typically the wettest month, when rainfall can reach 9.8 in. January is typically the driest time to visit Phnom Penh when rainfall is around 0.0 in.

Temperature in Phnom Penh by month

Plan your trip to Phnom Penh by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Phnom Penh, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 77.0 F).

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 marzo 31, 2025.
Korean Air
8.4
Very good
1,051 reviews

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

Boarding

8.5

Overall

8.4

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
1,051 reviews
Korean Air
8.4
Very good
1,051 reviews

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

Boarding

8.5

Overall

8.4

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.
Singapore Airlines
8.1
Very good
1,286 reviews
Korean Air
8.4
Very good
1,051 reviews

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

Boarding

8.5

Overall

8.4

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.
Emirates
8.0
Very good
3,192 reviews
Korean Air
8.4
Very good
1,051 reviews

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

Boarding

8.5

Overall

8.4

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.
Cathay Pacific
7.5
Good
841 reviews
Korean Air
8.4
Very good
1,051 reviews

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

Boarding

8.5

Overall

8.4

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
3,541 reviews
Korean Air
8.4
Very good
1,051 reviews

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

Boarding

8.5

Overall

8.4

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 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.

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

    Malaysia Airlines, at $1,331, 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 Etihad Airways and Singapore Airlines. Malaysia Airlines is currently priced 19% 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 $995). Flying from Washington, D.C. Dulles Intl Airport to Phnom Penh in June is currently the most expensive (average of $1,582). 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 marzo 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest$1,048Average$1,118FlexibilityNo cancel feeOn-time75%
Singapore AirlinesCheapest$1,239Average$1,386FlexibilityNo cancel feeOn-time81%
Qatar AirwaysCheapest$1,299Average$1,537FlexibilityNo cancel feeOn-time68%
Malaysia AirlinesCheapest$1,334Average$1,384FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$1,341Average$1,647FlexibilityNo cancel feeOn-time81%
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