Phnom Penh

$1,063+ Cheap flights from Washington, D.C. (WAS) to Phnom Penh (PNH)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/1. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — PNH
mei. 5 — mei. 121
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington, D.C. to Phnom Penh with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 april 30, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,333
(FlightHub)

Popular in

May

Cheapest in

September

Average price

$1,391
Provider with most accurate pricing for Washington, D.C. (WAS)-Phnom Penh Pochentong flight deals.
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Phnom Penh Pochentong flights.
From Washington, D.C. (WAS) to Phnom Penh Pochentong
Highest demand for flights based on searches. 4% potential increase in price ($73 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($31 potential savings vs. average RT price).
Average for round-trip flights in April 2025

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 april 30, 2025.

This FlightHub deal was found by Cheapflights users on 4/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
do 5/111:54 amDCA - PNH
2 stops42h 26mCathay Pacific
do 5/2911:25 amPNH - DCA
2 stops24h 21mCathay Pacific
Deal found 4/28$1,063
This Trip.com deal was found by Cheapflights users on 4/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
wo 9/310:05 pmIAD - PNH
2 stops31h 30mMultiple Airlines
wo 10/18:50 pmPNH - IAD
2 stops54h 20mMultiple Airlines
Deal found 4/28$1,159
This FlightHub deal was found by Cheapflights users on 4/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
di 9/27:00 amBWI - PNH
2 stops47h 40mSingapore Airlines
di 9/232:05 pmPNH - BWI
2 stops38h 02mSingapore Airlines
Deal found 4/28$1,215
This oojo deal was found by Cheapflights users on 4/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
wo 9/38:59 amDCA - PNH
2 stops37h 51mChina Airlines
wo 10/110:50 amPNH - DCA
2 stops45h 09mChina Airlines
Deal found 4/28$1,222
This oojo deal was found by Cheapflights users on 4/29. 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.
ma 9/226:09 pmIAD - PNH
2 stops28h 41mChina Airlines
ma 10/205:10 pmPNH - IAD
2 stops23h 45mChina Airlines
Deal found 4/29$1,242
This Mytrip deal was found by Cheapflights users on 4/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ma 11/175:45 amBWI - PNH
3 stops29h 10mMultiple Airlines
za 11/291:15 amPNH - BWI
3 stops45h 20mMultiple Airlines
Deal found 4/28$1,325
This oojo deal was found by Cheapflights users on 4/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
do 8/79:59 amDCA - PNH
2 stops38h 16mEVA Air
di 9/3012:35 pmPNH - DCA
2 stops43h 24mEVA Air
Deal found 4/28$1,326
This oojo deal was found by Cheapflights users on 4/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
do 8/78:19 pmIAD - PNH
2 stops27h 56mEVA Air
di 9/3012:35 pmPNH - IAD
2 stops29h 57mEVA Air
Deal found 4/28$1,326
This oojo deal was found by Cheapflights users on 4/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
za 10/2510:05 pmIAD - PNH
1 stop21h 25mEtihad Airways
di 11/47:55 amPNH - IAD
1 stop44h 10mEtihad Airways
Deal found 4/28$1,334
This FlightHub deal was found by Cheapflights users on 4/27. 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.
vr 9/129:40 pmIAD - PNH
2 stops23h 55mTurkish Airlines
za 9/279:40 amPNH - IAD
2 stops37h 05mTurkish Airlines
Deal found 4/27$1,368
This StudentUniverse deal was found by Cheapflights users on 4/28. 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.
vr 10/319:25 amBWI - PNH
2 stops26h 00mKorean Air
za 11/1511:45 pmPNH - BWI
2 stops24h 31mKorean Air
Deal found 4/28$1,379
This FlightHub deal was found by Cheapflights users on 4/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ma 9/227:25 pmBWI - PNH
2 stops27h 50mCathay Pacific
ma 10/206:30 pmPNH - BWI
2 stops38h 47mCathay Pacific
Deal found 4/29$1,404

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 april 30, 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

DCA - PNH

DCAPNH

Washington, D.C. Reagan-National

zo 7/20

12:10 pm-10:15 am

2 stops35h 05m

Phnom Penh Pochentong

wo 8/20

6:30 pm-1:05 am

2 stops41h 35m

$1,333

BaltimorePhnom Penh

BWI - PNH

BWIPNH

Baltimore/Washington

wo 5/14

2:59 pm-9:50 am

3 stops31h 51m

Phnom Penh Pochentong

zo 5/18

12:05 pm-7:10 am

3 stops30h 05m

$1,338

BaltimorePhnom Penh

BWI - PNH

BWIPNH

Baltimore/Washington

zo 7/20

6:05 am-5:40 pm

2 stops48h 35m

Phnom Penh Pochentong

wo 8/20

2:05 pm-5:07 pm

2 stops38h 02m

$1,342

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

zo 7/13

7:59 pm-10:15 am

2 stops51h 16m

Phnom Penh Pochentong

vr 8/1

6:30 pm-4:25 pm

2 stops56h 55m

$1,383

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

wo 5/14

7:00 am-11:15 am

2 stops41h 15m

Phnom Penh Pochentong

zo 5/18

12:35 pm-4:14 pm

2 stops38h 39m

$1,393

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

zo 5/25

1:30 pm-8:50 am

2 stops32h 20m

Phnom Penh Pochentong

zo 6/15

9:40 am-11:45 am

2 stops37h 05m

$1,471

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

zo 7/20

11:00 am-10:00 am

2 stops36h 00m

Phnom Penh Pochentong

wo 8/20

11:10 am-8:40 am

2 stops32h 30m

$1,503

Washington, D.C.Phnom Penh

DCA - PNH

DCAPNH

Washington, D.C. Reagan-National

wo 5/14

8:59 am-9:50 am

2 stops37h 51m

Phnom Penh Pochentong

zo 5/18

10:50 am-8:59 pm

2 stops45h 09m

$1,596

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

wo 5/14

6:30 am-12:15 am

2 stops54h 45m

Phnom Penh Pochentong

za 5/17

1:15 am-7:36 am

2 stops41h 21m

$1,702

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

za 6/28

7:59 pm-4:05 pm

2 stops33h 06m

Phnom Penh Pochentong

vr 8/8

10:50 am-6:50 am

2 stops31h 00m

$1,748

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 39 results
1
2
3
4

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 April.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust 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.-Phnom Penh flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Washington, D.C.-Phnom Penh flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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.

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 $991). 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 april 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.

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 april 30, 2025.
To help decide which airline to fly from Washington, D.C. to Phnom Penh, see what other customers have to say about EVA Air, Korean Air and China Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Crew

8.6

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Crew

8.6

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Crew

8.6

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Crew

8.6

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Crew

8.6

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Crew

8.6

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

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 $1,333. Other airlines that can offer you cheap pricing are Singapore Airlines, from $1,342, and EVA Air, from $1,393. 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 $2,518. However, be on the lookout for offers from Korean Air and Qatar Airways, 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?

  • 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 $991). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington, D.C. to Phnom Penh

See prices for flight routes from nearby airports that may be better suited for you.

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 april 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest$1,048Average$1,118FlexibilityNo cancel feeOn-time75%
Singapore AirlinesCheapest$1,239Average$1,419FlexibilityNo cancel feeOn-time81%
Qatar AirwaysCheapest$1,299Average$1,559FlexibilityNo cancel feeOn-time68%
Malaysia AirlinesCheapest$1,334Average$1,384FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$1,339Average$1,810FlexibilityNo cancel feeOn-time81%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.