WAS - PNH

$482 Find Cheap Flights from Washington, D.C. to Phnom Penh

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Phnom Penh departing on 9/17. 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

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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Cheap Flights from Washington, D.C. to Phnom Penh (WAS-PNH)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. 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 Washington, D.C. to Phnom Penh

Sat, Oct 25 - Tue, Nov 4
Etihad Airways Logo
10:05 pm - 6:30 amIAD-PNH
21h 25m1 stop
Etihad Airways Logo
7:55 pm - 4:05 pmPNH-IAD
32h 10m1 stop
$1,053Etihad Airways
Find Deal
Wed, Nov 5 - Sun, Nov 16
Asiana Airlines Logo
9:59 am - 10:55 pmDCA-PNH
48h 56m2 stops
Asiana Airlines Logo
11:55 pm - 8:00 pmPNH-DCA
56h 05m2 stops
$1,082Asiana Airlines
Find Deal
Wed, Nov 5 - Thu, Nov 13
Philippine Airlines Logo
7:43 am - 12:15 amIAD-PNH
52h 32m2 stops
Philippine Airlines Logo
1:15 am - 6:23 amPNH-IAD
41h 08m2 stops
$1,237Philippine Airlines
Find Deal
Sat, Nov 1 - Thu, Nov 20
China Airlines Logo
6:11 pm - 4:15 pmIAD-PNH
35h 04m2 stops
China Airlines Logo
5:20 pm - 6:23 amPNH-IAD
25h 03m2 stops
$1,247China Airlines
Find Deal
Wed, Nov 5 - Sun, Nov 16
Korean Air Logo
11:50 am - 10:25 pmIAD-PNH
22h 35m1 stop
Korean Air Logo
11:45 pm - 9:50 amPNH-IAD
22h 05m1 stop
$1,249Korean Air
Find Deal
Wed, Nov 5 - Sun, Nov 16
Korean Air Logo
5:10 pm - 10:25 pmIAD-PNH
41h 15m2 stops
Korean Air Logo
11:45 pm - 9:50 amPNH-IAD
22h 05m1 stop
$1,293Korean Air
Find Deal
Wed, Nov 5 - Sat, Nov 15
Philippine Airlines Logo
7:43 am - 12:15 amIAD-PNH
52h 32m2 stops
Philippine Airlines Logo
1:15 am - 6:23 amPNH-IAD
41h 08m2 stops
$1,340Philippine Airlines
Find Deal
Sat, Oct 25 - Tue, Nov 4
Singapore Airlines Logo
7:28 pm - 6:35 pmBWI-PNH
36h 07m2 stops
Singapore Airlines Logo
2:50 pm - 5:57 pmPNH-BWI
39h 07m2 stops
$1,353Singapore Airlines
Find Deal
Fri, Aug 1 - Sun, Aug 31
China Airlines Logo
9:59 am - 9:50 amDCA-PNH
36h 51m2 stops
China Airlines Logo
10:50 am - 5:59 pmPNH-DCA
42h 09m2 stops
$1,455China Airlines
Find Deal
Fri, Aug 1 - Sun, Aug 31
Singapore Airlines Logo
9:59 am - 8:40 amDCA-PNH
35h 41m3 stops
Singapore Airlines Logo
2:05 pm - 8:59 pmPNH-DCA
41h 54m2 stops
$1,840Singapore Airlines
Find Deal
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KAYAK's insights & trends for Washington, D.C. to Phnom Penh flights

Get data-powered insights and trends into flights from Washington, D.C. 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. 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. 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. to Phnom Penh is October, where tickets cost $1,317 (return) on average. On the other hand, the most expensive months are December and May, where the average cost of round-trip tickets is $1,967 and $1,817 respectively.

Good to know

Low seasonMay
High seasonDecember
Cheapest flight$482
Best time to beat the crowds but there is an average 14% increase in price.
Most popular time to fly with an average 24% increase in price.
Flight from Baltimore to Phnom Penh

When to book flights from Washington, D.C. to Phnom Penh

Are your dates flexible? Find out the best times to travel from Washington, D.C. 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 flights from Washington, D.C. to Phnom Penh

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. to Phnom Penh was $482 for a one-way ticket and $1,053 for a round-trip.

  • Do I need a passport to fly between Washington, D.C. and Phnom Penh?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Washington, D.C. and on arrival in Phnom Penh.

  • Which airports will I be using when flying from Washington, D.C. to Phnom Penh?

    Washington, D.C. is served by 2 major airports and there is only 1 main airport in Phnom Penh. You will leave Washington, D.C. from one of these airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl. You will be arriving at Phnom Penh Pochentong.

  • Which aircraft models fly most regularly from Washington, D.C. to Phnom Penh?

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

  • Which airline alliances offer flights from Washington, D.C. to Phnom Penh?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Washington, D.C. and Phnom Penh, with Star Alliance being the most commonly used for this route.

  • What is the most popular layover when flying to Phnom Penh from Washington, D.C.?

    Seoul is the most popular layover city among KAYAK users traveling from Washington, D.C. to Phnom Penh.

  • Which is the best airline for flights from Washington, D.C. to Phnom Penh, Korean Air or Etihad Airways?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Phnom Penh are Korean Air and Etihad Airways. With an average price for the route of $1,846 and an overall rating of 8.4, Korean Air is the most popular choice. Etihad Airways is also a great choice for the route, with an average price of $1,089 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Washington, D.C. 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, D.C. to Phnom Penh.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. 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, D.C. 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, D.C. 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, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. 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, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top airlines flying from Washington, D.C. 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 Washington, D.C. 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 1088 reviews
8.5Boarding
8.1Food
8.3Comfort
8.7Crew
8.2Entertainment
Airline reviews

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!

10.0 ExcellentAnonymous, May 2025LAS - ICN
Read more Korean Air reviews

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

Not many people, so you can lay down on two seats

It's good overall. Flight was packed. Inflight entertainment choices were lacking.

The delay in Korea was a pain and set us back a day. I have to give big props to Korean Air for setting up a hotel with dinner and transportation to and from the hotel. I also needed assistance with a wheelchair and they did an outstanding job.

Great except for the delay in Korea. Korean Air did a great job setting up a hotel for the night. I also needed assistance with a wheelchair and they were outstanding.

The flight was on time and very quick, as expected, but the leg room isn't great in coach seats.

Just a typical domestic poor flight nothing more. There is no food choices in such a flight. Crew doesn't really care if you are on-board or not

long flights are difficult but the crew and amenities made it a very good experience

Our seat row plus one ahead and behind we're completely overlooked during beverage service...

second leg was more comfortable. Customer service in Abu Dhabi is okay.

Should have had business class line in immigration. Food quality suboptimal

Used to Etihad employees are very rude and unprofessional but now better than before over all is okay now

The staff were wonderful but the seats weren't very comfortable for a bigger guy like me.

The flight take time was changed 23 times. The system kept sending messages it will be earlier at 4am and eventually the flight was at 9am I didn’t sleep all night because of that

Bad. Flight was very uncomfortable with narrow and shallow seats, very little food and water. I will not fly etihad again.

Boarding catastrophic let alone have to claimb the plain rather than using jetway. 5.5 hr delay leaving had to do stop in Lgw for a new crew which further compounded the delay. Connecting flight would not wait and had to pend a night in a hotel. Curiously my seat would not go full flat.

Good. The food was very bad. Except for the chicken rice, rest of the dish went to trash.

Seat selection screen while online check-in could include free seats to choose from and show the options before we proceed. Currently, it is auto-allocated and there are no options for free seat selections.

Liked leg room Disliked unable to book to sit with my family on same flight without paying extra

Everything you need to know for your flight from Washington, D.C. to Phnom Penh

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