Cheap Flights from Phnom Penh (PNH) to Washington (IAD)

Popular airlines from Phnom Penh Intl. Airport (PNH) to Washington Dulles Intl. Airport (IAD)

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Find the cheapest month to fly from Phnom Penh (PNH) to Washington (IAD)

February is typically the cheapest month to fly

From $1,134 - $1,558 per traveler.

Frequently asked questions

How much does a flight from Phnom Penh Intl. Airport (PNH) to Washington Dulles Intl. Airport (IAD) cost?
Grab a cheap one-way flight or cheap return flight from Phnom Penh Intl. Airport (PNH) to Washington Dulles Intl. Airport (IAD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Phnom Penh Intl. Airport (PNH) to Washington Dulles Intl. Airport (IAD)?
The cheapest month to fly from PNH to IAD is , when there's less demand. Off-peak season is generally when better flight deals are available between these airports.
What is the cheapest airline that flies from Phnom Penh Intl. Airport (PNH) to Washington Dulles Intl. Airport (IAD)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from PNH to IAD. Then, sort your results by "Price (lowest to highest)" to pick up a great deal.
How many flights per day from Phnom Penh Intl. Airport (PNH) to Washington Dulles Intl. Airport (IAD)?
There are no daily nonstop flights departing from Phnom Penh Intl. Airport (PNH) to Washington Dulles Intl. Airport (IAD). But you can choose flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be soaring above the clouds in no time.
What day of the week has the most flights from PNH to IAD?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary based on various factors, including the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Phnom Penh Intl. Airport (PNH) to Washington Dulles Intl. Airport (IAD)?
Choose a flight from Phnom Penh Intl. Airport (PNH) to Washington Dulles Intl. Airport (IAD) that takes off before 3 PM to reduce the risk of cancellations. Departures after this hour have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Phnom Penh Intl. Airport (PNH) to Washington Dulles Intl. Airport (IAD) last-minute?
Booking your plane ticket from PNH to IAD right before your trip is generally more expensive. However, if there's some wiggle room with your departure dates and times, you could score a cheap last-minute fare.
Is it cheaper to book a PNH to IAD flight and hotel package?
Securing a PNH to IAD flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Pick from our extensive range of hotels and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Phnom Penh Intl. Airport (PNH) to Washington Dulles Intl. Airport (IAD)?
Typically, you're able to cancel or reschedule your PNH to IAD flight. However, there may be additional fees, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's policies and fees on flight changes, or if you'd like further details, go to our Customer Service portal.

Travel information

Origin airport
Phnom Penh Intl.
Destination airport
Washington Dulles Intl.
Distance
8943 mi

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Phnom Penh to Washington Flights

The cheapest times to fly from Phnom Penh to Washington

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Phnom Penh to Washington are during the month of . You can find some of the cheapest flights from Phnom Penh to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Phnom Penh to Washington

Sunday is one of the best days to book for cheap flights from Phnom Penh to Washington: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Phnom Penh to Washington

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Phnom Penh to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Phnom Penh to Washington flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Phnom Penh to Washington airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Phnom Penh to Washington Flights

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*Available to One Key members.