Phnom Penh

$488+ 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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — PNH
Jun 17 — Jun 241
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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 August, booked 74 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 June 12, 2025.

Round-trip from

$1,053
(oojo)

One-way from

$488
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$2,126
From Washington, D.C. Dulles Intl to Phnom Penh Pochentong
One-way flight from Washington, D.C. Dulles Intl to Phnom Penh Pochentong
Highest demand for flights based on searches. 14% potential increase in price ($278 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($44 potential savings vs. average RT price).
Average for round-trip flights in June 2025

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 June 12, 2025.

This oojo deal was found by Cheapflights users on 6/10. 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 10/2510:05 pmIAD - PNH
1 stop21h 25mEtihad Airways
Tue 11/47:55 pmPNH - IAD
1 stop32h 10mEtihad Airways
Deal found 6/10$1,053
This oojo deal was found by Cheapflights users on 6/11. 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 11/57:43 amIAD - PNH
2 stops52h 32mPhilippine Airlines
Thu 11/131:15 amPNH - IAD
2 stops41h 08mPhilippine Airlines
Deal found 6/11$1,237
This oojo deal was found by Cheapflights users on 6/11. 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 11/57:43 amIAD - PNH
2 stops51h 12mAsiana Airlines
Sun 11/1611:55 pmPNH - IAD
2 stops52h 51mAsiana Airlines
Deal found 6/11$1,242
This oojo deal was found by Cheapflights users on 6/11. 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 11/16:11 pmIAD - PNH
2 stops35h 04mChina Airlines
Thu 11/205:20 pmPNH - IAD
2 stops25h 03mChina Airlines
Deal found 6/11$1,247
This oojo deal was found by Cheapflights users on 6/12. 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.
Mon 8/111:30 pmIAD - PNH
1 stop21h 40mKorean Air
Sun 8/3111:30 pmPNH - IAD
1 stop22h 25mKorean Air
Deal found 6/12$1,249
This oojo deal was found by Cheapflights users on 6/10. 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 10/299:05 pmIAD - PNH
2 stops31h 20mQatar Airways
Fri 1/235:10 pmPNH - IAD
2 stops34h 45mQatar Airways
Deal found 6/10$1,353
This Travelocity deal was found by Cheapflights users on 6/10. 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.
Tue 7/18:19 pmIAD - PNH
2 stops26h 56mMultiple Airlines
Tue 7/2211:25 amPNH - IAD
2 stops40h 00mMultiple Airlines
Deal found 6/10$1,361
This FlightHub deal was found by Cheapflights users on 6/11. 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.
Thu 12/256:55 pmIAD - PNH
2 stops49h 40mSingapore Airlines
Thu 1/229:35 amPNH - IAD
2 stops44h 20mSingapore Airlines
Deal found 6/11$1,451
This Ovago deal was found by Cheapflights users on 6/11. 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.
Sat 11/16:30 amIAD - PNH
2 stops29h 40mAir China
Wed 11/1912:25 amPNH - IAD
2 stops42h 56mAir China
Deal found 6/11$1,605
This oojo deal was found by Cheapflights users on 6/12. 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 6/208:19 pmIAD - PNH
2 stops27h 56mEVA Air
Mon 7/712:35 pmPNH - IAD
2 stops38h 50mEVA Air
Deal found 6/12$1,672
This Emirates deal was found by Cheapflights users on 6/10. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2911:15 amIAD - PNH
2 stops42h 20mEmirates
Fri 1/238:35 pmPNH - IAD
3 stops36h 30mEmirates
Deal found 6/10$1,724
This oojo deal was found by Cheapflights users on 6/10. 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 12/1910:40 amIAD - PNH
2 stops42h 50mMalaysia Airlines
Tue 1/2011:10 amPNH - IAD
2 stops33h 10mMalaysia Airlines
Deal found 6/10$2,301

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 June 12, 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 10/25

10:05 pm-6:30 am

1 stop21h 25m

Phnom Penh Pochentong

Tue 11/4

7:55 pm-4:05 pm

1 stop32h 10m

$1,053

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Wed 11/5

7:43 am-12:15 am

2 stops52h 32m

Phnom Penh Pochentong

Thu 11/13

1:15 am-6:23 am

2 stops41h 08m

$1,237

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Wed 11/5

7:43 am-10:55 pm

2 stops51h 12m

Phnom Penh Pochentong

Sun 11/16

11:55 pm-4:46 pm

2 stops52h 51m

$1,242

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Sat 11/1

6:11 pm-4:15 pm

2 stops35h 04m

Phnom Penh Pochentong

Thu 11/20

5:20 pm-6:23 am

2 stops25h 03m

$1,247

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Mon 8/11

1:30 pm-10:10 pm

1 stop21h 40m

Phnom Penh Pochentong

Sun 8/31

11:30 pm-10:55 am

1 stop22h 25m

$1,249

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Wed 10/29

9:05 pm-3:25 pm

2 stops31h 20m

Phnom Penh Pochentong

Fri 1/23

5:10 pm-3:55 pm

2 stops34h 45m

$1,353

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Tue 7/1

8:19 pm-10:15 am

2 stops26h 56m

Phnom Penh Pochentong

Tue 7/22

11:25 am-4:25 pm

2 stops40h 00m

$1,361

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Sat 11/1

6:30 am-11:10 pm

2 stops29h 40m

Phnom Penh Pochentong

Wed 11/19

12:25 am-7:21 am

2 stops42h 56m

$1,605

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Wed 10/29

11:15 am-4:35 pm

2 stops42h 20m

Phnom Penh Pochentong

Fri 1/23

8:35 pm-9:05 pm

3 stops36h 30m

$1,724

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Sun 6/29

7:59 pm-11:15 am

2 stops28h 16m

Phnom Penh Pochentong

Fri 8/8

12:35 pm-6:50 am

2 stops29h 15m

$1,794

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 13 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 June 9, 2025.

The best time to book flights from Washington, D.C. Dulles Intl Airport to Phnom Penh is 74 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 $991). Flying from Washington, D.C. Dulles Intl Airport to Phnom Penh in June is currently the most expensive (average of $1,570). 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 June 12, 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 June 12, 2025.
Read reviews from past customers who have flown EVA Air, Korean Air and China Airlines from Washington, D.C. to Phnom Penh. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Overall

8.4

Food

8.1

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.

Overall

8.4

Food

8.1

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.

Overall

8.4

Food

8.1

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.

Overall

8.4

Food

8.1

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.

Overall

8.4

Food

8.1

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.

Overall

8.4

Food

8.1

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.

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?

    Etihad Airways, at $1,053, 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 Philippine Airlines and Asiana Airlines. Etihad Airways is currently priced 36% 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 $991). Flying from Washington, D.C. Dulles Intl Airport to Phnom Penh in June is currently the most expensive (average of $1,570). 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.

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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest$1,048Average$1,110FlexibilityNo cancel feeOn-time75%
Qatar AirwaysCheapest$1,299Average$1,559FlexibilityNo cancel feeOn-time68%
Korean AirCheapest$1,304Average$1,631FlexibilityNo cancel feeOn-time81%
Singapore AirlinesCheapest$1,311Average$1,419FlexibilityNo cancel feeOn-time81%
Malaysia AirlinesCheapest$1,334Average$1,382FlexibilityNo cancel feeOn-time67%

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