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Phnom Penh

$805+ Cheap flights from Washington, D.C. (WAS) 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 1/29. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — PNH
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Washington, D.C. to Phnom Penh

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) 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 16, 2025.

Round-trip from

$1,199
(oojo)

One-way from

$805
(oojo)

Popular in

December

Cheapest in

August

Average price

$1,331
From Washington, D.C. (WAS) to Phnom Penh Pochentong
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One-way flight from Washington, D.C. (WAS) to Phnom Penh Pochentong
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Highest demand for flights based on searches. 6% potential increase in price ($101 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($37 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 Washington, D.C. to Phnom Penh

Cheapest flights from Washington, D.C. to Phnom Penh
Explore the most affordable flight options available from Washington, D.C. to Phnom Penh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This oojo deal was found by Cheapflights users on 9/14. 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 amPNH - IAD
1 stop43h 55mEtihad Airways
Deal found 9/14$1,199
This oojo deal was found by Cheapflights users on 9/14. 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.
Tue 11/119:10 pmIAD - PNH
1 stop33h 15mEtihad Airways
Tue 11/187:50 pmPNH - IAD
1 stop32h 00mEtihad Airways
Deal found 9/14$1,295
This Mytrip deal was found by Cheapflights users on 9/14. 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 11/118:30 pmIAD - PNH
3 stops33h 55mMultiple Airlines
Tue 11/187:50 pmPNH - IAD
3 stops35h 40mMultiple Airlines
Deal found 9/14$1,784
This oojo deal was found by Cheapflights users on 9/14. 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 9/14$1,837
This oojo deal was found by Cheapflights users on 9/14. 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 9/14$1,869
This oojo deal was found by Cheapflights users on 9/14. 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 1/97:55 amPNH - IAD
1 stop43h 55mEtihad Airways
Deal found 9/14$1,999
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 9/14. 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 9/14$2,152
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 10/308:40 pmBWI - PNH
3 stops34h 45mMultiple Airlines
Thu 11/67:50 pmPNH - BWI
3 stops34h 50mMultiple Airlines
Deal found 9/15$2,487
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 10/3011:05 amDCA - PNH
3 stops32h 25mMultiple Airlines
Thu 11/67:50 pmPNH - DCA
3 stops35h 55mMultiple Airlines
Deal found 9/15$2,507

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 16, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Phnom Penh that are best for you.

Fly from

Washington, D.C.

Fly to

Phnom Penh

Route

Depart

Return

Price

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Thu 1/1

9:10 pm-6:25 pm

1 stop33h 15m

Phnom Penh Pochentong

Thu 1/29

7:50 pm-3:50 pm

1 stop32h 00m

$1,250

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

Tue 11/11

8:30 pm-6:25 pm

3 stops33h 55m

Phnom Penh Pochentong

Tue 11/18

7:50 pm-7:30 pm

3 stops35h 40m

$1,784

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

Thu 12/25

9:10 pm-6:25 pm

1 stop33h 15m

Phnom Penh Pochentong

Fri 1/9

7:55 am-3:50 pm

1 stop43h 55m

$1,999

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Thu 10/30

9:30 pm-6:25 pm

3 stops33h 55m

Phnom Penh Pochentong

Thu 11/6

7:50 pm-3:35 pm

3 stops31h 45m

$2,138

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

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

$2,341

BaltimorePhnom Penh

BWI - PNH

BWIPNH

Baltimore/Washington

Thu 10/30

8:40 pm-6:25 pm

3 stops34h 45m

Phnom Penh Pochentong

Thu 11/6

7:50 pm-6:40 pm

3 stops34h 50m

$2,487

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 27 results
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Best time to book a flight from Washington, D.C. to Phnom Penh

Have a flexible travel schedule? Discover the best time to fly to Phnom Penh from Washington, D.C. 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. to Phnom Penh

What is the cheapest month to book a flight from Washington, D.C. to Phnom Penh?

Currently, March is the cheapest month in which you can book a flight from Washington, D.C. to Phnom Penh (average of $982). Flying from Washington, D.C. 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 WAS to PNH?

Find hourly flight availability from Washington, D.C. 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 16, 2025.

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. to Phnom Penh in the evening. If you’re flexible enough to do this you can expect to save up to 28% 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 16, 2025.
Peruse reviews from past customers who have flown with Korean Air and Singapore Airlines from Washington, D.C. to Phnom Penh to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,140 reviews

Food

8.1

Comfort

8.3

Entertainment

8.2

Overall

8.4

Boarding

8.5

Crew

8.7

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

Food

8.1

Comfort

8.3

Entertainment

8.2

Overall

8.4

Boarding

8.5

Crew

8.7

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
1,365 reviews
Korean Air
8.4
Very good
1,140 reviews

Food

8.1

Comfort

8.3

Entertainment

8.2

Overall

8.4

Boarding

8.5

Crew

8.7

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 Washington, D.C. 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.?

    If you book a flight to Phnom Penh from Washington, D.C., you will be flying to Pochentong, which is the city’s only airport. Phnom Penh Pochentong (PNH) is located 5.0 mi from the center of Phnom Penh. There are 0 flights from Washington, D.C. to Pochentong per day from 6 different airlines.

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

    Airlines like Etihad Airways fly from Washington, D.C. to Phnom Penh in about 33h 15m. The time it takes to get you to your destination can typically vary by up to . Washington, D.C. and Phnom Penh are separated by a distance of 8939 mi.

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

    Cheapflights users have booked flights from Washington, D.C. to Phnom Penh round-trip from $999. Other airlines that can offer you cheap pricing are Qatar Airways, from $1,299, and Korean Air, from $1,301. You may be able to fly from Washington, D.C. to Phnom Penh for 36% less than the average price by searching for these airlines.

  • What are the most popular routes from Washington, D.C. to Phnom Penh?

    When deciding which route to take from Washington, D.C. to Phnom Penh consider Washington, D.C. Dulles Intl - Phnom Penh Pochentong, Baltimore/Washington - Phnom Penh Pochentong or Washington, D.C. Reagan-National - Phnom Penh Pochentong as they are the most popular.

  • Can I find deals for flights from Washington, D.C. to Phnom Penh that include hotel bookings?

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

  • How can I find direct flights from Washington, D.C. to Phnom Penh?

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

  • Can I find deals for business class flights from Washington, D.C. to Phnom Penh?

    Yes. Cheapflights offers flight deals from Washington, D.C. 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. to Phnom Penh?

    Currently, March is the cheapest month in which you can book a flight from Washington, D.C. to Phnom Penh (average of $982). Flying from Washington, D.C. 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 Washington, D.C. to Phnom Penh

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

Top 6 airlines flying from Washington, D.C. to Phnom Penh

Discover the top 6 airlines that operate flights from Washington, D.C. 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 16, 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%
Asiana AirlinesCheapest$1,415Average$1,415FlexibilityNo cancel feeOn-time76%

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