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

Airlines like British Airways fly from Washington, D.C. to Phnom Penh in about 53h 20m. The time it takes to get you to your destination can typically vary by up to . Washington, D.C. and Phnom Penh are separated by a distance of 8939 mi.

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 $1,074. Other airlines that can offer you cheap pricing are Korean Air, from $1,287, and Asiana Airlines, from $1,415. You may be able to fly from Washington, D.C. to Phnom Penh for 28% less than the average price by searching for these airlines.

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.

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).

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, Baltimore/Washington - Phnom Penh Pochentong or Washington, D.C. Reagan-National - Phnom Penh Pochentong as they are the most popular.

What are the most popular airlines that fly from Washington, D.C. to Phnom Penh?

When booking a flight from Washington, D.C. to Phnom Penh, you may want to consider flying on Korean Air, Etihad Airways or Asiana Airlines as they are the most popular for this route.

What is the cheapest time of day to fly from WAS to PNH?

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

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.

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 3 different airlines.

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.

$2,915+ Flights from Washington, D.C. to Phnom Penh

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

Airfare is above average for this route at the moment. Washington, D.C. to Phnom Penh flights typically cost between $1,676 and $1,880 in July. The cheapest round-trip price found within the last 3 days was $2,915 on British Airways (Jul 30-Aug 11).

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

Cheapest

Best

One-way

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 February 14, 2026.

Thu 7/305:40 pm

IAD

PNH

2 stops53h 20m

British Airways

Tue 8/116:20 pm

PNH

IAD

2 stops37h 00m

British Airways

Deal found 2/10

$2,915

Wed 8/127:25 pm

BWI

PNH

3 stops33h 50m

Multiple Airlines

Wed 8/195:40 pm

PNH

BWI

3 stops37h 00m

Multiple Airlines

Deal found 2/13

$7,615

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

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$2,915 (oojo)
Popular in	May
Cheapest in	April
Average price	$1,778

Provider with most accurate pricing for Washington, D.C. (WAS)-Phnom Penh Pochentong flight deals.

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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Phnom Penh Pochentong flights.

Search Deals

From Washington, D.C. (WAS) to Phnom Penh Pochentong

Search Deals

Highest demand for flights based on searches. 3% potential increase in price ($61 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($33 potential savings vs. average RT price).

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Average for round-trip flights in February 2026

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Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Thu 7/30

5:40 pm-10:00 am

2 stops53h 20m

Phnom Penh Pochentong

Tue 8/11

6:20 pm-8:20 pm

2 stops37h 00m

$2,915

BaltimorePhnom Penh

BWI - PNH

BWIPNH

Baltimore/Washington

Wed 8/12

7:25 pm-4:15 pm

3 stops33h 50m

Phnom Penh Pochentong

Wed 8/19

5:40 pm-7:40 pm

3 stops37h 00m

$7,615

BaltimorePhnom Penh

BWI - PNH

BWIPNH

Baltimore/Washington

Tue 7/28

9:30 pm-10:00 am

2 stops49h 30m

$6,091

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Tue 7/28

7:15 pm-10:00 am

2 stops51h 45m

$6,330

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/12

Compare providers for flights from Washington, D.C. to Phnom Penh

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 February.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy2 stars	Trust Score*2 stars
Ovago	Price Accuracy2 stars	Trust 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 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.

WAS-PNH

IAD-PNH

BWI-PNH

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

WAS-PNH

IAD-PNH

BWI-PNH

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

Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to Phnom Penh (average of $583). Flying from Washington, D.C. to Phnom Penh in April is currently the most expensive (average of $1,756). 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.

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

Reviews of airlines servicing Phnom Penh

Peruse reviews from past customers who have flown with Korean Air 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.

Korean Air

8.4

Very good

1,191 reviews

Reviews

1 / 20

10.0

Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Korean Air

8.4

Very good

1,191 reviews

Korean Air

8.4

Very good

1,191 reviews

Reviews

1 / 20

10.0

Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Related info for your journey

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 3 different airlines.
How long is the flight from Washington, D.C. to Phnom Penh?
Airlines like British Airways fly from Washington, D.C. to Phnom Penh in about 53h 20m. The time it takes to get you to your destination can typically vary by up to . Washington, D.C. and Phnom Penh are separated by a distance of 8939 mi.
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 $1,074. Other airlines that can offer you cheap pricing are Korean Air, from $1,287, and Asiana Airlines, from $1,415. You may be able to fly from Washington, D.C. to Phnom Penh for 28% less than the average price by searching for these airlines.
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, Baltimore/Washington - Phnom Penh Pochentong or Washington, D.C. Reagan-National - 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, February is the cheapest month in which you can book a flight from Washington, D.C. to Phnom Penh (average of $583). Flying from Washington, D.C. to Phnom Penh in April is currently the most expensive (average of $1,756). 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 3 airlines flying from Washington, D.C. to Phnom Penh

Airline	Cheapest	Average	Flexibility	On-time
Etihad Airways	Cheapest$1,074	Average$1,348	FlexibilityNo cancel fee	On-time75%
Korean Air	Cheapest$1,287	Average$1,582	FlexibilityNo cancel fee	On-time81%
Asiana Airlines	Cheapest$1,415	Average$1,415	FlexibilityNo cancel fee	On-time76%

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$2,915+ 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 7/30. Fares are subject to change and may not be available on all flights or dates of travel.

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

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

Cheapest flights from Washington, D.C. to Phnom PenhExplore 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 February 14, 2026.

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 February 14, 2026.

Best flights from Washington, D.C. to Phnom PenhDiscover carefully curated flight deals from Washington, D.C. to Phnom Penh that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 14, 2026.

Discover carefully curated flight deals from Washington, D.C. to Phnom Penh that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 14, 2026.

One-way flights from Washington, D.C. to Phnom PenhSearch for one-way flight options from Washington, D.C. to Phnom Penh. Find affordable one-way fares based on user searches. Data last updated February 14, 2026.

Search for one-way flight options from Washington, D.C. to Phnom Penh. Find affordable one-way fares based on user searches. Data last updated February 14, 2026.

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

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 February.

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.

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?

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

Reviews of airlines servicing Phnom Penh

Peruse reviews from past customers who have flown with Korean Air 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.

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.?

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

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

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?

How can I 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?

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

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Washington, D.C. and Phnom Penh flights

Browse other Washington, D.C. and Phnom Penh flight options. Last updated on February 14, 2026.

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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 February 14, 2026.

Best flights from Washington, D.C. to Phnom Penh
Discover carefully curated flight deals from Washington, D.C. to Phnom Penh that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 14, 2026.

One-way flights from Washington, D.C. to Phnom Penh
Search for one-way flight options from Washington, D.C. to Phnom Penh. Find affordable one-way fares based on user searches. Data last updated February 14, 2026.