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$734+ Cheap flights from Phnom Penh (PNH) to Washington, D.C. (WAS)

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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
PNH — WAS
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
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Cheap flight deals from Phnom Penh to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Phnom Penh (PNH) to Washington, D.C. (WAS). 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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,170
(Mytrip)

One-way from

$734
(China Airlines)
Provider with most accurate pricing for Phnom Penh Pochentong-Washington, D.C. (WAS) flight deals.
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Provider most trusted by Cheapflights users for Phnom Penh Pochentong-Washington, D.C. (WAS) flights.
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From Phnom Penh Pochentong to Washington, D.C. (WAS)
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One-way flight from Phnom Penh Pochentong to Washington, D.C. (WAS)
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Find flight deals from Phnom Penh to Washington, D.C.

Cheapest flights from Phnom Penh to Washington, D.C.
Explore the most affordable flight options available from Phnom Penh to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

This Mytrip deal was found by Cheapflights users on 3/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/168:50 pmPNH - IAD
2 stops29h 55mMultiple Airlines
Tue 4/2211:00 amIAD - PNH
3 stops34h 55mMultiple Airlines
Deal found 3/27$1,170
This Singapore Airlines deal was found by Cheapflights users on 3/27. 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 Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/106:55 pmPNH - IAD
2 stops45h 45mSingapore Airlines
Sun 4/207:31 amIAD - PNH
2 stops42h 39mSingapore Airlines
Deal found 3/27$1,627
This Gurufare deal was found by Cheapflights users on 3/27. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1611:25 amPNH - DCA
2 stops45h 50mCathay Pacific
Tue 4/226:35 amDCA - PNH
2 stops23h 45mCathay Pacific
Deal found 3/27$1,732
This China Airlines deal was found by Cheapflights users on 3/27. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/2010:50 amPNH - DCA
2 stops45h 09mMultiple Airlines
Fri 4/256:35 pmDCA - PNH
2 stops28h 15mMultiple Airlines
Deal found 3/27$1,743
This CheapOair deal was found by Cheapflights users on 3/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/511:30 pmPNH - IAD
2 stops32h 52mKorean Air
Wed 9/171:15 pmIAD - PNH
1 stop21h 55mKorean Air
Deal found 3/28$1,838
This StudentUniverse deal was found by Cheapflights users on 3/27. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/138:50 pmPNH - IAD
1 stop46h 50mEmirates
Tue 6/1010:55 amIAD - PNH
1 stop42h 40mEmirates
Deal found 3/27$1,880
This Korean Air deal was found by Cheapflights users on 3/28. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/511:30 pmPNH - DCA
2 stops33h 06mKorean Air
Wed 9/176:05 amDCA - PNH
2 stops29h 05mKorean Air
Deal found 3/28$1,893
This Gurufare deal was found by Cheapflights users on 3/28. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/119:35 amPNH - DCA
2 stops46h 24mSingapore Airlines
Sun 4/208:59 amDCA - PNH
2 stops41h 11mSingapore Airlines
Deal found 3/28$1,930
This Gurufare deal was found by Cheapflights users on 3/27. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/41:15 amPNH - DCA
2 stops30h 38mPhilippine Airlines
Sun 5/118:15 amDCA - PNH
2 stops53h 00mPhilippine Airlines
Deal found 3/27$1,932
This KAYAK deal was found by Cheapflights users on 3/27. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1512:20 amPNH - IAD
2 stops32h 00mAir China
Tue 4/2211:00 pmIAD - PNH
3 stops49h 10mAir China
Deal found 3/27$2,272
This Emirates deal was found by Cheapflights users on 3/27. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/208:50 pmPNH - DCA
3 stops38h 09mEmirates
Fri 4/252:46 pmDCA - PNH
3 stops38h 49mEmirates
Deal found 3/27$2,755
This United Airlines deal was found by Cheapflights users on 3/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/511:55 pmPNH - DCA
2 stops32h 35mUnited Airlines
Wed 9/174:07 pmDCA - PNH
3 stops43h 48mUnited Airlines
Deal found 3/28$3,699

Cheapflights Fare Finder

Customize your flight search to find flights from Phnom Penh to Washington, D.C. 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 March 28, 2025.
Use the filters below to find and compare flights from Phnom Penh to Washington, D.C. that are best for you.

Fly from

Phnom Penh

Fly to

Washington, D.C.

Route

Depart

Return

Price

Phnom PenhWashington, D.C.

PNH - IAD

PNHIAD

Phnom Penh Pochentong

Wed 4/16

8:50 pm-3:45 pm

2 stops29h 55m

Washington, D.C. Dulles Intl

Tue 4/22

11:00 am-8:55 am

3 stops34h 55m

$1,170

Phnom PenhWashington, D.C.

PNH - IAD

PNHIAD

Phnom Penh Pochentong

Thu 4/10

6:55 pm-5:40 am

2 stops45h 45m

Washington, D.C. Dulles Intl

Sun 4/20

7:31 am-1:10 pm

2 stops42h 39m

$1,627

Phnom PenhWashington, D.C.

PNH - DCA

PNHDCA

Phnom Penh Pochentong

Wed 4/16

11:25 am-10:15 pm

2 stops45h 50m

Washington, D.C. Reagan-National

Tue 4/22

6:35 am-5:20 pm

2 stops23h 45m

$1,732

Phnom PenhWashington, D.C.

PNH - DCA

PNHDCA

Phnom Penh Pochentong

Sun 4/20

10:50 am-8:59 pm

2 stops45h 09m

Washington, D.C. Reagan-National

Fri 4/25

6:35 pm-9:50 am

2 stops28h 15m

$1,743

Phnom PenhWashington, D.C.

PNH - IAD

PNHIAD

Phnom Penh Pochentong

Sun 4/13

8:50 pm-8:40 am

1 stop46h 50m

Washington, D.C. Dulles Intl

Tue 6/10

10:55 am-4:35 pm

1 stop42h 40m

$1,880

Phnom PenhWashington, D.C.

PNH - DCA

PNHDCA

Phnom Penh Pochentong

Fri 4/11

9:35 am-8:59 pm

2 stops46h 24m

Washington, D.C. Reagan-National

Sun 4/20

8:59 am-1:10 pm

2 stops41h 11m

$1,930

Phnom PenhWashington, D.C.

PNH - DCA

PNHDCA

Phnom Penh Pochentong

Thu 4/10

1:15 am-8:53 pm

2 stops30h 38m

Washington, D.C. Reagan-National

Sun 4/20

5:30 pm-12:15 am

2 stops43h 45m

$1,932

Phnom PenhWashington, D.C.

PNH - IAD

PNHIAD

Phnom Penh Pochentong

Sat 5/10

11:30 pm-11:15 am

1 stop22h 45m

Washington, D.C. Dulles Intl

Sat 5/24

1:15 pm-10:10 pm

1 stop21h 55m

$2,204

Phnom PenhWashington, D.C.

PNH - IAD

PNHIAD

Phnom Penh Pochentong

Tue 4/15

12:20 am-9:20 pm

2 stops32h 00m

Washington, D.C. Dulles Intl

Tue 4/22

11:00 pm-11:10 am

3 stops49h 10m

$2,272

Phnom PenhWashington, D.C.

PNH - DCA

PNHDCA

Phnom Penh Pochentong

Sun 4/20

8:50 pm-11:59 pm

3 stops38h 09m

Washington, D.C. Reagan-National

Fri 4/25

2:46 pm-4:35 pm

3 stops38h 49m

$2,755

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 18 results
1
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Compare providers for flights from Phnom Penh to Washington, D.C.

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 Phnom Penh to Washington, D.C. in March.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice 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 Phnom Penh-Washington, D.C. flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Phnom Penh-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Phnom Penh-Washington, D.C. flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Phnom Penh-Washington, D.C. 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 Phnom Penh-Washington, D.C. 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 Phnom Penh to Washington, D.C.

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

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

Currently, August is the cheapest month in which you can book a flight from Phnom Penh to Washington, D.C. (average of $309). Flying from Phnom Penh to Washington, D.C. in June is currently the most expensive (average of $385). 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 PNH to WAS?

Find hourly flight availability from Phnom Penh to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 28, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Phnom Penh to Washington, D.C. as you normally would.

Rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

Temperature in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated March 28, 2025.
See what other customers who have flown with Korean Air, Singapore Airlines and Emirates from Phnom Penh to Washington, D.C. have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,050 reviews

Crew

8.7

Food

8.1

Entertainment

8.2

Overall

8.4

Comfort

8.3

Boarding

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.
Korean Air
8.4
Very good
1,050 reviews
Korean Air
8.4
Very good
1,050 reviews

Crew

8.7

Food

8.1

Entertainment

8.2

Overall

8.4

Comfort

8.3

Boarding

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.
Singapore Airlines
8.1
Very good
1,285 reviews
Korean Air
8.4
Very good
1,050 reviews

Crew

8.7

Food

8.1

Entertainment

8.2

Overall

8.4

Comfort

8.3

Boarding

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.
Emirates
8.0
Very good
3,190 reviews
Korean Air
8.4
Very good
1,050 reviews

Crew

8.7

Food

8.1

Entertainment

8.2

Overall

8.4

Comfort

8.3

Boarding

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.
Cathay Pacific
7.5
Good
837 reviews
Korean Air
8.4
Very good
1,050 reviews

Crew

8.7

Food

8.1

Entertainment

8.2

Overall

8.4

Comfort

8.3

Boarding

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.
Qatar Airways
7.4
Good
3,538 reviews
Korean Air
8.4
Very good
1,050 reviews

Crew

8.7

Food

8.1

Entertainment

8.2

Overall

8.4

Comfort

8.3

Boarding

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

Related info for your journey

Find useful and relevant information for your journey from Phnom Penh to Washington, D.C.. 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 from for flights from Phnom Penh to Washington, D.C.?

    Phnom Penh Pochentong (PNH) is the airport you will fly out of if you book a flight from Phnom Penh to Washington, D.C.. You should not have trouble finding flights to Washington, D.C. from Pochentong; the airport handles an average of 0 outbound flights to Washington, D.C. per day. You should also have plenty of airline options to choose from since 2 airlines have flights from the Phnom Penh airport to Washington, D.C.. It is only a 5.0 mi journey to Pochentong (PNH) from Phnom Penh’s city center.

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

    According to our current data, Singapore Airlines ($1,627), Cathay Pacific ($1,732), and Emirates ($1,880) offers the cheapest pricing from Phnom Penh to Washington, D.C..

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

    The cheapest airline one-way is Korean Air, with whom users have recently found tickets for as low as $1,166. However, be on the lookout for offers from Qatar Airways and Emirates, as they are both options that can get you from Phnom Penh to Washington, D.C. for a low price.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Phnom Penh to Washington, D.C. (average of $309). Flying from Phnom Penh to Washington, D.C. in June is currently the most expensive (average of $385). 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

Traveling to a place near Phnom Penh?

Book flights to Phnom Penh if you plan to visit one of these locations
Arlington
Alexandria
Fairfax
Tysons
Springfield
Rockville
Woodbridge
Gaithersburg
Fredericksburg
Linthicum Heights
Silver Spring
Falls Church
Laurel
Easton
Herndon
Bowie
Gettysburg
National Harbor
Oxon Hill
Reston

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

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

Top 2 airlines flying from Phnom Penh to Washington, D.C.

Discover the top 2 airlines that operate flights from Phnom Penh to Washington, D.C.. 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest$855Average$937FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$1,533Average$1,703FlexibilityNo cancel feeOn-time81%
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