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

Departing from Phnom Penh to Washington, D.C. will take you 43h 55m. Airlines will cover a distance of 8939 mi.

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

According to our current data, Air China ($855), and Korean Air ($1,476) offers the cheapest pricing from Phnom Penh to Washington, D.C..

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

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

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.

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).

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

Flying to your destination on a Tuesday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Washington, D.C.. Check prices with Cheapflights to find a great deal for your trip.

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.

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.

$1,023+ Cheap Flights from Phnom Penh to Washington, D.C.

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Cheap flight deals from Phnom Penh to Washington, D.C.

Round-trip from	$1,672 (oojo)
One-way from	$1,023 (oojo)

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 September 11, 2025.

Sat 11/17:55 amPNH - IAD

1 stop43h 55mEtihad Airways

Sat 11/159:10 pmIAD - PNH

1 stop21h 20mEtihad Airways

Deal found 9/10

$1,672

Fri 11/77:55 amPNH - IAD

1 stop43h 55mEtihad Airways

Tue 11/119:10 pmIAD - PNH

1 stop33h 15mEtihad Airways

Deal found 9/10

$1,734

Sat 11/17:55 amPNH - IAD

1 stop43h 55mMultiple Airlines

Sat 11/159:00 pmIAD - PNH

2 stops45h 30mMultiple Airlines

Deal found 9/10

$2,721

Tue 11/117:55 amPNH - IAD

1 stop43h 55mEtihad Airways

Sat 11/229:10 pmIAD - PNH

1 stop21h 20mEtihad Airways

Deal found 9/11

$6,007

Tue 11/117:50 pmPNH - IAD

1 stop32h 00mMultiple Airlines

Sat 11/2210:20 pmIAD - PNH

2 stops44h 10mMultiple Airlines

Deal found 9/11

$7,686

Mon 11/107:55 amPNH - IAD

1 stop43h 55mMultiple Airlines

Fri 11/219:00 pmIAD - PNH

2 stops45h 30mMultiple Airlines

Deal found 9/10

$8,071

Best flights from Phnom Penh to Washington, D.C.
Discover carefully curated flight deals from Phnom Penh to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2025.

Sat 11/17:55 amPNH - IAD

1 stop43h 55mEtihad Airways

Sat 11/159:10 pmIAD - PNH

1 stop21h 20mEtihad Airways

Deal found 9/10

$1,672

Sat 11/17:55 amPNH - IAD

1 stop43h 55mMultiple Airlines

Sat 11/159:00 pmIAD - PNH

2 stops45h 30mMultiple Airlines

Deal found 9/10

$2,721

Fri 11/77:55 amPNH - IAD

1 stop43h 55mEtihad Airways

Tue 11/119:10 pmIAD - PNH

1 stop33h 15mEtihad Airways

Deal found 9/9

$1,734

Tue 11/117:55 amPNH - IAD

1 stop43h 55mEtihad Airways

Sat 11/229:10 pmIAD - PNH

1 stop21h 20mEtihad Airways

Deal found 9/11

$6,007

Tue 11/117:50 pmPNH - IAD

1 stop32h 00mMultiple Airlines

Sat 11/2210:20 pmIAD - PNH

2 stops44h 10mMultiple Airlines

Deal found 9/11

$7,686

Mon 11/107:55 amPNH - IAD

1 stop43h 55mMultiple Airlines

Fri 11/219:00 pmIAD - PNH

2 stops45h 30mMultiple Airlines

Deal found 9/10

$8,071

One-way flights from Phnom Penh to Washington, D.C.
Search for one-way flight options from Phnom Penh to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated September 11, 2025.

Tue 12/237:55 amPNH - IAD

1 stop43h 55mEtihad Airways

Deal found 9/10

$1,023

Fri 2/67:55 amPNH - IAD

1 stop43h 55mEtihad Airways

Deal found 9/10

$1,039

Tue 12/237:50 pmPNH - IAD

2 stops36h 40mMultiple Airlines

Deal found 9/11

$1,951

Fri 2/67:55 amPNH - IAD

2 stops48h 35mMultiple Airlines

Deal found 9/11

$1,967

Sat 12/137:50 pmPNH - IAD

3 stops58h 40mMultiple Airlines

Deal found 9/10

$2,480

Tue 12/167:55 amPNH - IAD

3 stops47h 35mMultiple Airlines

Deal found 9/10

$2,888

Sat 12/137:50 pmPNH - IAD

1 stop32h 00mEtihad Airways

Deal found 9/10

$3,637

Tue 12/167:55 amPNH - IAD

1 stop43h 55mEtihad Airways

Deal found 9/10

$3,732

Mon 12/157:55 amPNH - IAD

1 stop43h 55mEtihad Airways

Deal found 9/10

$3,826

Thu 12/187:50 pmPNH - IAD

1 stop32h 00mEtihad Airways

Deal found 9/10

$3,945

Tue 12/167:55 amPNH - DCA

2 stops50h 59mEtihad Airways

Deal found 9/10

$4,144

Fri 12/197:55 amPNH - IAD

2 stops33h 05mMultiple Airlines

Deal found 9/10

$5,245

Cheapflights Fare Finder

Use the filters below to find and compare flights from Phnom Penh to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Phnom PenhWashington, D.C.

PNH - IAD

PNHIAD

Phnom Penh Pochentong

Sat 11/1

7:55 am-4:50 pm

1 stop43h 55m

Washington, D.C. Dulles Intl

Sat 11/15

9:10 pm-6:30 am

1 stop21h 20m

$1,672

Phnom PenhWashington, D.C.

PNH - IAD

PNHIAD

Phnom Penh Pochentong

Fri 11/7

7:55 am-3:50 pm

1 stop43h 55m

Washington, D.C. Dulles Intl

Tue 11/11

9:10 pm-6:25 pm

1 stop33h 15m

$1,734

Phnom PenhWashington, D.C.

PNH - IAD

PNHIAD

Phnom Penh Pochentong

Sat 11/1

7:55 am-4:50 pm

1 stop43h 55m

Washington, D.C. Dulles Intl

Sat 11/15

9:00 pm-6:30 am

2 stops45h 30m

$2,721

Phnom PenhWashington, D.C.

PNH - IAD

PNHIAD

Phnom Penh Pochentong

Tue 11/11

7:55 am-3:50 pm

1 stop43h 55m

Washington, D.C. Dulles Intl

Sat 11/22

9:10 pm-6:30 am

1 stop21h 20m

$6,007

Phnom PenhWashington, D.C.

PNH - IAD

PNHIAD

Phnom Penh Pochentong

Tue 11/11

7:50 pm-3:50 pm

1 stop32h 00m

Washington, D.C. Dulles Intl

Sat 11/22

10:20 pm-6:30 am

2 stops44h 10m

$7,686

Phnom PenhWashington, D.C.

PNH - IAD

PNHIAD

Phnom Penh Pochentong

Mon 11/10

7:55 am-3:50 pm

1 stop43h 55m

Washington, D.C. Dulles Intl

Fri 11/21

9:00 pm-6:30 am

2 stops45h 30m

$8,071

Phnom PenhWashington, D.C.

PNH - IAD

PNHIAD

Phnom Penh Pochentong

Tue 12/23

7:55 am-3:50 pm

1 stop43h 55m

$1,023

Phnom PenhWashington, D.C.

PNH - IAD

PNHIAD

Phnom Penh Pochentong

Fri 2/6

7:55 am-3:50 pm

1 stop43h 55m

$1,039

Phnom PenhWashington, D.C.

PNH - IAD

PNHIAD

Phnom Penh Pochentong

Tue 12/23

7:50 pm-8:30 pm

2 stops36h 40m

$1,951

Phnom PenhWashington, D.C.

PNH - IAD

PNHIAD

Phnom Penh Pochentong

Fri 2/6

7:55 am-8:30 pm

2 stops48h 35m

$1,967

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 17 results

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 $292). Flying from Phnom Penh to Washington, D.C. in April is currently the most expensive (average of $337). 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?

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.

Reviews of airlines servicing Washington, D.C.

Read through reviews of airlines operating flights from Phnom Penh to Washington, D.C., such as Korean Air. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Korean Air

8.4

Very good

1,139 reviews

Reviews

1 / 20

10.0

Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Korean Air

8.4

Very good

1,139 reviews

Korean Air

8.4

Very good

1,139 reviews

Reviews

1 / 20

10.0

Excellent

Jacqueline,Aug 2025

ICN - SEA

Related info for your journey

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.
How long is the flight from Phnom Penh to Washington, D.C.?
Departing from Phnom Penh to Washington, D.C. will take you 43h 55m. Airlines will cover a distance of 8939 mi.
What are the cheapest airlines flying from Phnom Penh to Washington, D.C. round-trip?
According to our current data, Air China ($855), and Korean Air ($1,476) offers the cheapest pricing from Phnom Penh to Washington, D.C..
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 $292). Flying from Phnom Penh to Washington, D.C. in April is currently the most expensive (average of $337). 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.

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

Airline	Cheapest	Average	Flexibility	On-time
Air China	Cheapest$855	Average$937	FlexibilityNo cancel fee	On-time67%
Korean Air	Cheapest$1,476	Average$1,743	FlexibilityNo cancel fee	On-time81%

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$1,023+ 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 12/23. Fares are subject to change and may not be available on all flights or dates of travel.

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

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Cheap flight deals from Phnom Penh to Washington, D.C.

Round-trip from

One-way from

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 September 11, 2025.

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 September 11, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Phnom Penh to Washington, D.C. that are best for you.

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.

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.?

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 September 11, 2025.

Reviews of airlines servicing Washington, D.C.

Read through reviews of airlines operating flights from Phnom Penh to Washington, D.C., such as Korean Air. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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.?

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

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

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

How can I 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.?

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

Traveling to a place near Washington, D.C.?

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 Phnom Penh to Washington, D.C.

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

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

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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 September 11, 2025.