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 $1,249. Another airline that can offer you cheap pricing is Asiana 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 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 2 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.

$6,081+ Cheap Flights from Washington, D.C. to Phnom Penh

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

One-way

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 May 28, 2026.

Mon 8/109:30 pm

BWI

PNH

2 stops49h 30m

British Airways

Deal found 5/26

$6,081

Mon 8/1010:25 pm

IAD

PNH

2 stops48h 35m

British Airways

Deal found 5/26

$6,081

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

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars

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.

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Fly from

Fly to

Route

Depart

Return

Price

Cheapest one-way

BaltimorePhnom Penh

BWI - PNH

BWIPNH

Baltimore/Washington

Mon 8/10

9:30 pm-10:00 am

2 stops49h 30m

$6,081

Quickest one-way

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Mon 8/10

10:25 pm-10:00 am

2 stops48h 35m

$6,081

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/26

Sorted by cheapest first

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 May.

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

BWI-PNH

IAD-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

BWI-PNH

IAD-PNH

No data available for this route at this time. Please check back soon.

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

1,217 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

1,217 reviews

Korean Air

8.4

Very good

1,217 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 2 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 $1,249. Another airline that can offer you cheap pricing is Asiana 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.

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

Airline	Cheapest	Average	Flexibility	On-time
Korean Air	Cheapest$1,249	Average$1,450	FlexibilityNo cancel fee	On-time81%
Asiana Airlines	Cheapest$1,415	Average$1,415	FlexibilityNo cancel fee	On-time76%

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$6,081+ 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 8/10. 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

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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

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 May 28, 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 May 28, 2026.

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

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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 May.

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

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.?

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?

Browse thousands of different options on Cheapflights for your next trip

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

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Complete your trip

Complete your trip to Phnom Penh by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Washington, D.C. to Phnom Penh by cabin class

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Washington, D.C. and Phnom Penh flights

Browse other Washington, D.C. and Phnom Penh flight options. Last updated on May 28, 2026.

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

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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 May 28, 2026.