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Phnom Penh

$556+ 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 3/17. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — PNH
feb. 4 — feb. 111
mar. 2/4
mar. 2/11
1 adult, Economy
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The best prices from Washington, D.C. to Phnom Penh Pochentong are usually found in October or September, booked 10 days in advance, depart on a Saturday or Friday and return on a Monday

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 enero 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,112
(Mytrip)

One-way from

$556
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$1,627
Provider with most accurate pricing for Washington, D.C. (WAS)-Phnom Penh Pochentong flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Phnom Penh Pochentong flights.
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From Washington, D.C. (WAS) to Phnom Penh Pochentong
Search Deals
One-way flight from Washington, D.C. (WAS) to Phnom Penh Pochentong
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Highest demand for flights based on searches. 3% potential increase in price ($50 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in January 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 enero 30, 2025.

This Mytrip deal was found by Cheapflights users on 1/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 3/18:55 pmBWI - PNH
2 stops25h 30mMultiple Airlines
lun. 3/103:50 pmPNH - BWI
3 stops35h 57mMultiple Airlines
Deal found 1/30$1,230
This FlightHub deal was found by Cheapflights users on 1/30. 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.
mié. 4/25:50 pmBWI - PNH
2 stops36h 50mSingapore Airlines
mar. 4/222:05 pmPNH - BWI
2 stops37h 34mSingapore Airlines
Deal found 1/30$1,297
This StudentUniverse deal was found by Cheapflights users on 1/28. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/39:30 pmIAD - PNH
2 stops32h 00mMultiple Airlines
mié. 11/193:20 pmPNH - IAD
2 stops36h 45mMultiple Airlines
Deal found 1/28$1,311
This Expedia deal was found by Cheapflights users on 1/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/39:21 amDCA - PNH
2 stops37h 04mCathay Pacific
lun. 3/1711:45 amPNH - DCA
2 stops39h 44mCathay Pacific
Deal found 1/29$1,313
This Expedia deal was found by Cheapflights users on 1/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 3/19:00 amDCA - PNH
2 stops43h 15mMultiple Airlines
lun. 3/105:20 pmPNH - DCA
2 stops38h 39mMultiple Airlines
Deal found 1/30$1,322
This FlightHub deal was found by Cheapflights users on 1/30. 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. 3/19:00 amDCA - PNH
2 stops41h 05mSingapore Airlines
lun. 3/109:35 amPNH - DCA
2 stops46h 24mSingapore Airlines
Deal found 1/30$1,326
This oojo deal was found by Cheapflights users on 1/29. 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.
mar. 4/110:00 pmIAD - PNH
2 stops29h 25mEtihad Airways
jue. 4/247:25 pmPNH - IAD
2 stops32h 10mEtihad Airways
Deal found 1/29$1,328
This Ovago deal was found by Cheapflights users on 1/29. 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. 2/186:00 amIAD - PNH
2 stops41h 15mAir China
mar. 3/1812:15 pmPNH - IAD
2 stops30h 16mAir China
Deal found 1/29$1,335
This CheapOair deal was found by Cheapflights users on 1/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/75:00 pmIAD - PNH
3 stops52h 40mSingapore Airlines
vie. 10/249:35 amPNH - IAD
2 stops42h 15mSingapore Airlines
Deal found 1/29$1,337
This Malaysia Airlines deal was found by Cheapflights users on 1/29. 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 Malaysia Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/309:05 pmIAD - PNH
2 stops33h 20mMalaysia Airlines
jue. 4/2411:10 amPNH - IAD
2 stops40h 00mMalaysia Airlines
Deal found 1/29$1,512
This oojo deal was found by Cheapflights users on 1/30. 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.
jue. 3/2012:50 pmIAD - PNH
1 stop22h 35mKorean Air
lun. 3/3111:30 pmPNH - IAD
1 stop22h 45mKorean Air
Deal found 1/30$1,522
This oojo deal was found by Cheapflights users on 1/30. 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. 4/211:51 amBWI - PNH
3 stops41h 09mQatar Airways
mar. 4/225:40 pmPNH - BWI
3 stops39h 06mQatar Airways
Deal found 1/30$1,606

Find flights from Washington, D.C. to Phnom Penh within your budget

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 enero 30, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BaltimorePhnom Penh

BWI - PNH

BWIPNH

Baltimore/Washington

sáb. 3/1

8:55 pm-10:25 am

2 stops25h 30m

Phnom Penh Pochentong

lun. 3/10

3:50 pm-4:47 pm

3 stops35h 57m

$1,230

BaltimorePhnom Penh

BWI - PNH

BWIPNH

Baltimore/Washington

mié. 4/2

5:50 pm-5:40 pm

2 stops36h 50m

Phnom Penh Pochentong

mar. 4/22

2:05 pm-4:39 pm

2 stops37h 34m

$1,297

Washington, D.C.Phnom Penh

DCA - PNH

DCAPNH

Washington, D.C. Reagan-National

lun. 3/3

9:21 am-10:25 am

2 stops37h 04m

Phnom Penh Pochentong

lun. 3/17

11:45 am-4:29 pm

2 stops39h 44m

$1,313

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

mar. 2/18

6:00 am-11:15 am

2 stops41h 15m

Phnom Penh Pochentong

mar. 3/18

12:15 pm-7:31 am

2 stops30h 16m

$1,313

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

sáb. 3/1

6:30 am-10:25 pm

2 stops27h 55m

Phnom Penh Pochentong

lun. 3/10

11:45 pm-4:29 pm

2 stops27h 44m

$1,316

Washington, D.C.Phnom Penh

DCA - PNH

DCAPNH

Washington, D.C. Reagan-National

sáb. 3/1

9:00 am-4:15 pm

2 stops43h 15m

Phnom Penh Pochentong

lun. 3/10

5:20 pm-8:59 pm

2 stops38h 39m

$1,322

Washington, D.C.Phnom Penh

DCA - PNH

DCAPNH

Washington, D.C. Reagan-National

sáb. 3/1

9:00 am-2:05 pm

2 stops41h 05m

Phnom Penh Pochentong

lun. 3/10

9:35 am-8:59 pm

2 stops46h 24m

$1,326

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

mar. 4/1

7:31 am-5:40 pm

3 stops47h 09m

Phnom Penh Pochentong

mié. 4/30

6:55 pm-5:40 am

2 stops45h 45m

$1,345

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

sáb. 2/15

8:05 pm-5:30 pm

2 stops33h 25m

Phnom Penh Pochentong

mar. 3/18

11:10 am-9:20 am

2 stops33h 10m

$1,521

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

jue. 3/20

12:50 pm-10:25 pm

1 stop22h 35m

Phnom Penh Pochentong

lun. 3/31

11:30 pm-11:15 am

1 stop22h 45m

$1,522

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/29

Showing 1-10 of 28 results
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Compare providers for flights from Washington, D.C. 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 Washington, D.C. to Phnom Penh in January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star

*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.-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.-Phnom Penh flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Phnom Penh flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C.-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.-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 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.

Travel insights for flights from Washington, D.C. to Phnom Penh

Get recent, data-driven insights about flights from Washington, D.C. to Phnom Penh including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Phnom Penh. Price data was last updated on January 24, 2025.

The best time to book flights from Washington, D.C. to Phnom Penh is 7 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. to Phnom Penh?

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. to Phnom Penh (average of $1,014). Flying from Washington, D.C. 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 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 enero 30, 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.

What is the cheapest day to fly from Washington, D.C. to Phnom Penh?

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Phnom Penh. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Washington, D.C. to Phnom Penh flight should consider departing on Saturday evenings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 enero 30, 2025.
To help decide which airline to fly from Washington, D.C. to Phnom Penh, see what other customers have to say about Korean Air, Emirates and Singapore Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.5
Very good
1,034 reviews

Crew

8.7

Food

8.1

Entertainment

8.2

Boarding

8.5

Comfort

8.3

Overall

8.5

Reviews

1 / 20

10.0
Excellent

David,Dec 2024

JFK - MCO

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Korean Air
8.5
Very good
1,034 reviews
Korean Air
8.5
Very good
1,034 reviews

Crew

8.7

Food

8.1

Entertainment

8.2

Boarding

8.5

Comfort

8.3

Overall

8.5

Reviews

1 / 20

10.0
Excellent

David,Dec 2024

JFK - MCO

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Emirates
8.1
Very good
3,330 reviews
Korean Air
8.5
Very good
1,034 reviews

Crew

8.7

Food

8.1

Entertainment

8.2

Boarding

8.5

Comfort

8.3

Overall

8.5

Reviews

1 / 20

10.0
Excellent

David,Dec 2024

JFK - MCO

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Singapore Airlines
8.1
Very good
1,317 reviews
Korean Air
8.5
Very good
1,034 reviews

Crew

8.7

Food

8.1

Entertainment

8.2

Boarding

8.5

Comfort

8.3

Overall

8.5

Reviews

1 / 20

10.0
Excellent

David,Dec 2024

JFK - MCO

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Qatar Airways
7.5
Good
3,718 reviews
Korean Air
8.5
Very good
1,034 reviews

Crew

8.7

Food

8.1

Entertainment

8.2

Boarding

8.5

Comfort

8.3

Overall

8.5

Reviews

1 / 20

10.0
Excellent

David,Dec 2024

JFK - MCO

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Cathay Pacific
7.5
Good
820 reviews
Korean Air
8.5
Very good
1,034 reviews

Crew

8.7

Food

8.1

Entertainment

8.2

Boarding

8.5

Comfort

8.3

Overall

8.5

Reviews

1 / 20

10.0
Excellent

David,Dec 2024

JFK - MCO

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

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 5 different airlines.

  • 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 $1,297. Other airlines that can offer you cheap pricing are Cathay Pacific, from $1,313, and Etihad Airways, from $1,328. You may be able to fly from Washington, D.C. to Phnom Penh for 20% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Washington, D.C. to Phnom Penh one-way?

    The cheapest airline one-way is Cathay Pacific, with whom users have recently found tickets for as low as $664. However, be on the lookout for offers from Qatar Airways and Singapore Airlines, as they are both options that can get you from Washington, D.C. to Phnom Penh for a low price.

  • 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, Washington, D.C. Reagan-National - Phnom Penh Pochentong or Baltimore/Washington - 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, October is the cheapest month in which you can book a flight from Washington, D.C. to Phnom Penh (average of $1,014). Flying from Washington, D.C. 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

Browse thousands of different options on Cheapflights for your next trip

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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 5 airlines flying from Washington, D.C. to Phnom Penh

Discover the top 5 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 enero 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest$1,048Average$1,112FlexibilityNo cancel feeOn-time75%
Singapore AirlinesCheapest$1,239Average$1,419FlexibilityNo cancel feeOn-time81%
Qatar AirwaysCheapest$1,299Average$1,550FlexibilityNo cancel feeOn-time68%
Korean AirCheapest$1,342Average$1,843FlexibilityNo cancel feeOn-time81%
Malaysia AirlinesCheapest$1,371Average$1,385FlexibilityNo cancel feeOn-time67%
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