IAD - PNH

$3,412 Find Cheap Flights from Washington Dulles Airport to Phnom Penh

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Phnom Penh departing on 7/30. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Phnom Penh

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Phnom Penh, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Phnom Penh, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$3,412
Typical prices: $1,635-$1,428
British Airways
Thu 7/30Tue 8/11
IAD - PNH • 2 stops
Nonstop flights
Not available
There are currently no direct flights between Dulles Intl and Phnom Penh. You'll need at least 1 connection.
Insights
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Top layover airports
Abu Dhabi (AUH)
Cheapest • Avg $1,194 (round-trip)
Incheon (ICN)
Shortest trip • 22h 01m (one-way)
Insights
Insights
Insights
Insights
When to travel
April
Cheapest • 100% price drop
November
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Phnom Penh!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Dulles Intl to Phnom Penh (IAD-PNH)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Phnom Penh that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Phnom Penh

Thu, Jul 30 - Tue, Aug 11
British Airways Logo
10:25 pm - 10:00 am
IAD
-
PNH
48h 35m
2 stops
British Airways Logo
6:20 pm - 7:15 pm
PNH
-
IAD
35h 55m
3 stops
$3,412British Airways
Thu, Jul 30 - Tue, Aug 11
British Airways Logo
10:25 pm - 10:00 am
IAD
-
PNH
48h 35m
2 stops
British Airways Logo
6:20 pm - 8:20 pm
PNH
-
IAD
37h 00m
2 stops
$4,660British Airways
Thu, Jul 30 - Tue, Aug 11
British Airways Logo
7:15 pm - 10:00 am
IAD
-
PNH
51h 45m
2 stops
British Airways Logo
6:20 pm - 7:40 pm
PNH
-
IAD
36h 20m
2 stops
$4,661British Airways
Thu, Jul 30 - Tue, Aug 11
British Airways Logo
10:25 pm - 10:00 am
IAD
-
PNH
48h 35m
2 stops
British Airways Logo
6:20 pm - 3:45 pm
PNH
-
IAD
32h 25m
3 stops
$4,760British Airways
Thu, Jul 30 - Tue, Aug 11
British Airways Logo
5:45 pm - 10:00 am
IAD
-
PNH
29h 15m
3 stops
British Airways Logo
6:20 pm - 7:15 pm
PNH
-
IAD
35h 55m
3 stops
$8,217British Airways
Booking Insights

KAYAK's insights & trends for Dulles Intl to Phnom Penh flights

Get data-powered insights and trends into flights from Dulles Intl to Phnom Penh to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Phnom Penh?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Phnom Penh, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Phnom Penh is April, where tickets cost $0 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $2,133 and $1,798 respectively.

Find deals

Good to know

Low seasonMarch
Cheapest flight$3,412
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly and prices are also 9% lower on average.
Flight from Washington Dulles Airport to Phnom Penh

When to book flights from Dulles Intl to Phnom Penh

Are your dates flexible? Find out the best times to travel from Dulles Intl to Phnom Penh based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Phnom Penh flights

  • Which flight options do I have on this route?

    When flying from Washington to Phnom Penh, several airlines offer flights on this route with one or more layovers. Qatar Airways, Emirates, Cathay Pacific, Turkish Airlines, China Eastern Airlines, Korean Air, and Singapore Airlines provide connecting flights through their hub cities.

  • What airline from Washington Dulles Airport to Phnom Penh is ideal for someone with special needs?

    Cathay Pacific, Korean Air, Qatar Airways, and United Airlines are ideal airlines for passengers traveling with special needs. These airlines offer dedicated services such as mobility aids, escort through the airport, wheelchair assistance, and trained cabin crew to assist special-needs passengers. Passengers that require special assistance during their flight should inform the respective airline in advance.

  • What is the quickest way to get downtown from Phnom Penn International Airport?

    The quickest way to get downtown from Phnom Penn International Airport is through a taxi or ride-hailing service. Passengers getting off at this airport can get to taxi stands after exiting the arrivals area at the airport. Alternatively, you can book a ride downtown through Grab or PassApp the most popular app-based services at Phnom Penh International Airport available for travelers.

  • Which airline suits families traveling from Washington Dulles Airport to Phnom Penh?

    If you are flying from Washington Dulles Airport to Phnom Penh with your family, consider booking your flight with Singapore Airlines. This airline offers dedicated services and amenities, such as priority boarding for families with young children, activity packs, special meals, and entertainment for kids. Flying with this airline guarantees you and your kids an enjoyable and comfortable trip from Washington to Phnom Penh.

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Phnom Penh?

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Phnom Penh was $3,412 for a round-trip ticket.

  • Do I need a passport to fly between Washington Dulles Airport and Phnom Penh?

    Yes, you’ll need a passport to travel to Phnom Penh from Washington Dulles Airport.

  • Which airports will I be using when flying from Washington Dulles Airport to Phnom Penh?

    When flying out of Washington Dulles Airport you will be using Washington, D.C. Dulles Intl. You will be landing at Phnom Penh, also known as Phnom Penh Pochentong.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Phnom Penh?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington Dulles Airport to Phnom Penh?

    SkyTeam is the only airline alliance operating flights between Washington Dulles Airport and Phnom Penh.

  • What is the most popular layover when flying to Phnom Penh from Washington Dulles Airport?

    Seoul is the most popular layover city among KAYAK users traveling from Washington Dulles Airport to Phnom Penh.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Phnom Penh?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Phnom Penh.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Phnom Penh?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Phnom Penh from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Phnom Penh?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Phnom Penh with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and PNH can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Phnom Penh?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Phnom Penh from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Washington, D.C. Dulles Intl Airport to Phnom Penh

  • When flying from Washington to Phnom Penh, passengers fly from Washington Dulles Airport (IAD). This airport is the main international airport located about 26 miles from downtown Washington DC thus making it more convenient for you if you travel from Washington Dulles Airport (IAD) to Phnom Penh (PNH). Passengers going to Washington Dulles Airport can use Metro bus services for routes 5A, 5B, and 5C that depart from various tops along L'Enfant Plaza and Rosslyn.
  • Passengers flying from Washington, D.C., to Phnom Penh, Cambodia land at Phnom Penh International Airport. This airport is the main international airport serving Phnom Penh and is approximately 7 miles from the city center.
  • Those arriving at Phnom Penh International Airport late at night can consider staying at a hotel nearby. These include Phnom Penh Hotel, Rambutan Resort, and The Pavilion Hotel. The hotels offer complimentary shuttle services to and from the airport.
  • If you have an early morning flight from Washington to Phnom Penh, consider staying at a nearby hotel. Holiday Inn Washington-Dulles International Airport is a suitable hotel that offers complimentary shuttle services to and from the airport. Other hotels include Hyatt Regency Dulles and Hilton Washington Dulles Airport.
  • Cathay Pacific is the ideal environment-friendly airline on this flight route. The airline uses fuel-efficient aircraft and has invested in biofuel research. The airline also has environmentally friendly initiatives such as recycling, minimizing waste, and supporting carbon offset programs.

Reviews of the top airline flying from Dulles Intl to Phnom Penh

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Phnom Penh. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Phnom Penh? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.4
Korean AirOverall score based on 1216 reviews
8.3Comfort
8.2Entertainment
8.5Boarding
8.7Crew
8.1Food
Airline reviews

AAAAHHHH... It was shocking in a very positive way, the attention to detail, the courtesy, the manners of all personnel on board, the constant honest smiling. You can see and feel they take pride in all they do no matter how trivial. The plane in general was very comfortable. I can't wait to do it again

8.0 ExcellentCarlos J, Apr 2026
TPA - ATL
Read more Korean Air reviews

AAAAHHHH... It was shocking in a very positive way, the attention to detail, the courtesy, the manners of all personnel on board, the constant honest smiling. You can see and feel they take pride in all they do no matter how trivial. The plane in general was very comfortable. I can't wait to do it again

The boarding process was efficient and quick. The seats were comfortable. The food was good. The service was excellent. We had a lovely flight from Seattle on Korean air

Flight crew was fantastic. The aircraft was meticulously cleaned at all times. The crew was continuously checking to see if the passengers were ok.

It’s great, long flight and arrive safe at destination

They were trying to get people to check luggage because the over head compartments were full but when we boarded there were lots of empty places that people could have put the luggage.

It was good, I liked the self-serve snacks but it was a little difficult to get the alcohol, which is understandable since I wouldn't want kids sneaking it.

Friendly flight attendants and gate agents. Very clean plane and food was good!

I was unable to select decent seats, and so I was stuck in the middle seat because it was selected for me

There was a lot of partial tv shows but not enough to last the flight. The food was incredible! The crew were so helpful and patient. Lots more space than what I usually get on an international flight. Very comfortable!

Stingy on the drinks - 15 hour direct flight and could barely get attention for some water

Everything you need to know for your flight from Dulles Intl to Phnom Penh

Information on your arrival and departure airports

Washington Dulles Airport (IAD)
Phnom Penh (PNH)