Phnom Penh

$488+ 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 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — PNH
Jul 1 — Jul 81
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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 June 26, 2025.

Round-trip from

$1,028
(oojo)

One-way from

$488
(Mytrip)

Popular in

December

Cheapest in

September

Average price

$1,700
From Washington, D.C. (WAS) to Phnom Penh Pochentong
One-way flight from Washington, D.C. (WAS) to Phnom Penh Pochentong
Highest demand for flights based on searches. 5% potential increase in price ($89 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($35 potential savings vs. average RT price).
Average for round-trip flights in June 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 June 26, 2025.

This oojo deal was found by Cheapflights users on 6/25. 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 11/59:59 amDCA - PNH
2 stops48h 56mAsiana Airlines
Sun 11/1611:55 pmPNH - DCA
2 stops56h 05mAsiana Airlines
Deal found 6/25$1,028
This oojo deal was found by Cheapflights users on 6/25. 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 stop44h 10mEtihad Airways
Deal found 6/25$1,082
This oojo deal was found by Cheapflights users on 6/26. 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 11/56:11 pmIAD - PNH
2 stops40h 44mAsiana Airlines
Fri 11/1411:55 pmPNH - IAD
2 stops42h 28mAsiana Airlines
Deal found 6/26$1,127
This oojo deal was found by Cheapflights users on 6/26. 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 10/2411:00 pmIAD - PNH
1 stop37h 10mAir China
Thu 11/612:25 amPNH - IAD
1 stop30h 05mAir China
Deal found 6/26$1,186
This oojo deal was found by Cheapflights users on 6/26. 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 8/256:09 pmIAD - PNH
2 stops28h 41mChina Airlines
Mon 11/245:20 pmPNH - IAD
2 stops24h 35mChina Airlines
Deal found 6/26$1,201
This oojo deal was found by Cheapflights users on 6/26. 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 6/26$1,226
This oojo deal was found by Cheapflights users on 6/26. 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 8/257:00 amBWI - PNH
2 stops28h 55mAsiana Airlines
Mon 11/2411:55 pmPNH - BWI
2 stops41h 50mAsiana Airlines
Deal found 6/26$1,241
This FlightHub deal was found by Cheapflights users on 6/26. 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.
Fri 10/247:28 pmBWI - PNH
2 stops31h 22mSingapore Airlines
Fri 11/72:50 pmPNH - BWI
2 stops39h 07mSingapore Airlines
Deal found 6/26$1,247
This Mytrip deal was found by Cheapflights users on 6/25. 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.
Sat 8/165:45 amBWI - PNH
2 stops29h 25mMultiple Airlines
Sun 8/248:50 pmPNH - BWI
3 stops45h 04mMultiple Airlines
Deal found 6/25$1,293
This Etihad Airways deal was found by Cheapflights users on 6/26. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2510:05 pmIAD - PNH
2 stops32h 25mMultiple Airlines
Tue 11/47:55 pmPNH - IAD
1 stop32h 10mMultiple Airlines
Deal found 6/26$1,299
This Ovago deal was found by Cheapflights users on 6/25. 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.
Thu 12/49:40 amDCA - PNH
2 stops44h 05mCathay Pacific
Wed 12/2411:45 amPNH - DCA
2 stops22h 55mCathay Pacific
Deal found 6/25$1,346
This oojo deal was found by Cheapflights users on 6/25. 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 10/256:25 amIAD - PNH
2 stops42h 00mEVA Air
Tue 11/412:45 pmPNH - IAD
2 stops29h 38mEVA Air
Deal found 6/25$1,355

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 June 26, 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

Wed 11/5

9:59 am-10:55 pm

2 stops48h 56m

Phnom Penh Pochentong

Sun 11/16

11:55 pm-8:00 pm

2 stops56h 05m

$1,028

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 am-4:05 pm

1 stop44h 10m

$1,082

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Wed 11/5

6:11 pm-10:55 pm

2 stops40h 44m

Phnom Penh Pochentong

Fri 11/14

11:55 pm-6:23 am

2 stops42h 28m

$1,127

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Fri 10/24

11:00 pm-11:10 pm

1 stop37h 10m

Phnom Penh Pochentong

Thu 11/6

12:25 am-6:30 pm

1 stop30h 05m

$1,186

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Mon 8/25

6:09 pm-9:50 am

2 stops28h 41m

Phnom Penh Pochentong

Mon 11/24

5:20 pm-5:55 am

2 stops24h 35m

$1,201

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

$1,226

BaltimorePhnom Penh

BWI - PNH

BWIPNH

Baltimore/Washington

Mon 8/25

7:00 am-10:55 pm

2 stops28h 55m

Phnom Penh Pochentong

Mon 11/24

11:55 pm-5:45 am

2 stops41h 50m

$1,241

BaltimorePhnom Penh

BWI - PNH

BWIPNH

Baltimore/Washington

Fri 10/24

7:28 pm-1:50 pm

2 stops31h 22m

Phnom Penh Pochentong

Fri 11/7

2:50 pm-5:57 pm

2 stops39h 07m

$1,247

BaltimorePhnom Penh

BWI - PNH

BWIPNH

Baltimore/Washington

Sat 8/16

5:45 am-10:10 pm

2 stops29h 25m

Phnom Penh Pochentong

Sun 8/24

8:50 pm-6:54 am

3 stops45h 04m

$1,293

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Sat 10/25

10:05 pm-5:30 pm

2 stops32h 25m

Phnom Penh Pochentong

Tue 11/4

7:55 pm-4:05 pm

1 stop32h 10m

$1,299

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/26

Showing 1-10 of 46 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 $990). Flying from Washington, D.C. to Phnom Penh in June is currently the most expensive (average of $1,554). 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 June 26, 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.

How much does it cost to fly round-trip from Washington, D.C. to Phnom Penh?

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 26, 2025.
Peruse reviews from past customers who have flown with EVA Air, Korean Air, and China 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.

Entertainment

8.0

Comfort

8.3

Food

8.1

Crew

8.6

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Entertainment

8.0

Comfort

8.3

Food

8.1

Crew

8.6

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Entertainment

8.0

Comfort

8.3

Food

8.1

Crew

8.6

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Entertainment

8.0

Comfort

8.3

Food

8.1

Crew

8.6

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Entertainment

8.0

Comfort

8.3

Food

8.1

Crew

8.6

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Entertainment

8.0

Comfort

8.3

Food

8.1

Crew

8.6

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

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.

  • 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 $1,028. Other airlines that can offer you cheap pricing are Singapore Airlines, from $1,122, and China Airlines, from $1,142. You may be able to fly from Washington, D.C. to Phnom Penh for 35% 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 China Airlines, with whom users have recently found tickets for as low as $617. However, be on the lookout for offers from Cathay Pacific and Korean Air, 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 $990). Flying from Washington, D.C. to Phnom Penh in June is currently the most expensive (average of $1,554). 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.

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 June 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest$1,048Average$1,110FlexibilityNo cancel feeOn-time75%
Qatar AirwaysCheapest$1,299Average$1,559FlexibilityNo cancel feeOn-time68%
Korean AirCheapest$1,303Average$1,787FlexibilityNo cancel feeOn-time81%
Singapore AirlinesCheapest$1,311Average$1,419FlexibilityNo 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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