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$1,807+ Cheap flights from Phnom Penh (PNH) to Washington

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 12/25. Fares are subject to change and may not be available on all flights or dates of travel.
PNH — SEA
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Phnom Penh to Washington

Keep the following information in mind while searching for Phnom Penh to Washington flight deals. Data was last updated September 15, 2025.

Round-trip from

$2,350
(Etihad Airways)

One-way from

$1,807
(oojo)

Popular in

January

Cheapest in

September

Average price

$813
From Phnom Penh Pochentong to Washington
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One-way flight from Phnom Penh Pochentong to Washington
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Highest demand for flights based on searches. 7% potential increase in price ($80 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Phnom Penh to Washington

Cheapest flights from Phnom Penh to Washington
Explore the most affordable flight options available from Phnom Penh to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Etihad Airways deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/48:30 amPNH - SEA
2 stops49h 39mMultiple Airlines
Fri 7/3111:59 pmSEA - PNH
2 stops40h 46mMultiple Airlines
Deal found 9/15$2,350

Cheapflights Fare Finder

 
Customize your flight search to find flights from Phnom Penh to Washington that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Phnom Penh to Washington that are best for you.

Fly from

Phnom Penh

Fly to

Washington

Route

Depart

Return

Price

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

Sat 10/4

8:30 am-8:09 pm

2 stops49h 39m

Seattle/Tacoma Intl

Fri 7/31

11:59 pm-6:45 am

2 stops40h 46m

$2,350

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

Thu 12/25

7:50 pm-2:02 pm

2 stops33h 12m

$1,807

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

Sat 2/14

7:50 pm-6:20 pm

2 stops37h 30m

$2,651

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

Fri 2/13

7:55 am-1:55 pm

2 stops45h 00m

$4,837

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

Tue 1/6

7:50 pm-6:40 pm

2 stops61h 50m

$5,170

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Best time to book a flight from Phnom Penh to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Phnom Penh with our price prediction graph.
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 Phnom Penh to Washington

What is the cheapest month to book a flight from Phnom Penh to State of Washington?

Currently, January is the cheapest month in which you can book a flight from Phnom Penh to State of Washington (average of $238). Flying from Phnom Penh to State of Washington in June is currently the most expensive (average of $387). 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.

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

Find hourly flight availability from Phnom Penh to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

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

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington. Reviews last updated September 15, 2025.
Read reviews from past customers who have flown EVA Air, Korean Air, and China Airlines from Phnom Penh to Washington. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,236 reviews

Overall

8.4

Food

8.1

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak
EVA Air
8.4
Very good
1,236 reviews
EVA Air
8.4
Very good
1,236 reviews

Overall

8.4

Food

8.1

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak
Korean Air
8.4
Very good
1,139 reviews
EVA Air
8.4
Very good
1,236 reviews

Overall

8.4

Food

8.1

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak
China Airlines
8.3
Very good
767 reviews
EVA Air
8.4
Very good
1,236 reviews

Overall

8.4

Food

8.1

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak
Asiana Airlines
8.2
Very good
479 reviews
EVA Air
8.4
Very good
1,236 reviews

Overall

8.4

Food

8.1

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak

Related info for your journey

Find useful and relevant information for your journey from Phnom Penh to Washington. 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 from for flights from Phnom Penh to Washington?

    If you book a flight to Washington from Phnom Penh, you will be flying from Pochentong, which is the city’s only airport. Phnom Penh Pochentong (PNH) is located 5.0 mi from the center of Phnom Penh.

  • What are the most popular routes from Phnom Penh to State of Washington?

    Most travelers choose Phnom Penh Pochentong - Seattle/Tacoma Intl, Phnom Penh Pochentong - Spokane or Phnom Penh Pochentong - Portland when deciding on the best route from Phnom Penh to State of Washington.

  • Can I find deals for flights from Phnom Penh to Washington that include hotel bookings?

    Yes. In addition to deals on Phnom Penh to Washington flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Phnom Penh to Washington?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Phnom Penh to Washington.

  • Can I find deals for business class flights from Phnom Penh to Washington?

    Yes. Cheapflights offers flight deals from Phnom Penh to Washington 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 Phnom Penh to State of Washington?

    Currently, January is the cheapest month in which you can book a flight from Phnom Penh to State of Washington (average of $238). Flying from Phnom Penh to State of Washington in June is currently the most expensive (average of $387). 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.

See more FAQs

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Top 4 airlines flying from Phnom Penh to Washington

Discover the top 4 airlines that operate flights from Phnom Penh to Washington. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$707Average$932FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$831Average$987FlexibilityNo cancel feeOn-time81%
China AirlinesCheapest$991Average$1,068FlexibilityNo cancel feeOn-time70%
EVA AirCheapest$1,062Average$1,176FlexibilityNo cancel feeOn-time74%

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