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$492+ 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 5/22. Fares are subject to change and may not be available on all flights or dates of travel.
PNH — SEA
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
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 March 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$772
(oojo)

One-way from

$492
(oojo)

Popular in

July

Cheapest in

November

Average price

$1,149
Provider with most accurate pricing for Phnom Penh Pochentong-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Phnom Penh Pochentong-Seattle/Tacoma Intl flights.
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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. 10% potential increase in price ($137 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 31, 2025.

This oojo deal was found by Cheapflights users on 3/31. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/61:15 amPNH - SEA
1 stop32h 00mPhilippine Airlines
Wed 7/911:35 pmSEA - PNH
1 stop34h 40mPhilippine Airlines
Deal found 3/31$772
This StudentUniverse deal was found by Cheapflights users on 3/31. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/711:30 pmPNH - SEA
1 stop25h 10mKorean Air
Wed 7/91:20 pmSEA - PNH
1 stop18h 50mKorean Air
Deal found 3/31$833
This FlightHub deal was found by Cheapflights users on 3/31. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/811:55 pmPNH - SEA
1 stop26h 35mAsiana Airlines
Wed 7/92:30 pmSEA - PNH
1 stop18h 25mAsiana Airlines
Deal found 3/31$849
This China Airlines deal was found by Cheapflights users on 3/31. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/85:10 pmPNH - SEA
1 stop16h 20mMultiple Airlines
Thu 7/109:07 pmSEA - PNH
2 stops46h 43mMultiple Airlines
Deal found 3/31$1,047
This Expedia deal was found by Cheapflights users on 3/31. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/811:55 pmPNH - GEG
2 stops38h 04mMultiple Airlines
Thu 7/106:00 amGEG - PNH
2 stops26h 55mMultiple Airlines
Deal found 3/31$1,103
This China Airlines deal was found by Cheapflights users on 3/31. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/410:50 amPNH - SEA
1 stop22h 40mChina Airlines
Sat 7/51:40 amSEA - PNH
1 stop24h 25mChina Airlines
Deal found 3/31$1,107
This oojo deal was found by Cheapflights users on 3/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1012:35 pmPNH - SEA
1 stop20h 55mEVA Air
Thu 4/1712:30 amSEA - PNH
1 stop20h 45mEVA Air
Deal found 3/30$1,133
This oojo deal was found by Cheapflights users on 3/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/232:05 pmPNH - SEA
2 stops33h 45mSingapore Airlines
Wed 4/304:15 pmSEA - PNH
2 stops26h 25mSingapore Airlines
Deal found 3/30$1,415
This Gurufare deal was found by Cheapflights users on 3/31. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/67:25 pmPNH - SEA
2 stops34h 35mFinnair
Mon 7/75:40 pmSEA - PNH
2 stops24h 55mFinnair
Deal found 3/31$1,475
This StudentUniverse deal was found by Cheapflights users on 3/30. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1711:25 amPNH - SEA
2 stops25h 29mCathay Pacific
Sat 5/176:52 pmSEA - PNH
2 stops25h 23mCathay Pacific
Deal found 3/30$1,645
This Expedia deal was found by Cheapflights users on 3/31. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/712:10 amPNH - GEG
2 stops35h 30mChina Eastern
Thu 7/106:00 amGEG - PNH
2 stops27h 15mChina Eastern
Deal found 3/31$2,805

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 March 31, 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

Tue 5/6

1:15 am-7:15 pm

1 stop32h 00m

Seattle/Tacoma Intl

Wed 7/9

11:35 pm-12:15 am

1 stop34h 40m

$772

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

Wed 5/7

11:30 pm-10:40 am

1 stop25h 10m

Seattle/Tacoma Intl

Wed 7/9

1:20 pm-10:10 pm

1 stop18h 50m

$833

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

Thu 5/8

11:55 pm-12:30 pm

1 stop26h 35m

Seattle/Tacoma Intl

Wed 7/9

2:30 pm-10:55 pm

1 stop18h 25m

$849

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

Thu 5/8

5:10 pm-7:30 pm

1 stop16h 20m

Seattle/Tacoma Intl

Thu 7/10

9:07 pm-9:50 am

2 stops46h 43m

$1,047

Phnom PenhSpokane

PNH - GEG

PNHGEG

Phnom Penh Pochentong

Thu 5/8

11:55 pm-11:59 pm

2 stops38h 04m

Spokane

Thu 7/10

6:00 am-10:55 pm

2 stops26h 55m

$1,103

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

Sun 5/4

10:50 am-7:30 pm

1 stop22h 40m

Seattle/Tacoma Intl

Sat 7/5

1:40 am-4:05 pm

1 stop24h 25m

$1,107

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

Thu 4/10

12:35 pm-7:30 pm

1 stop20h 55m

Seattle/Tacoma Intl

Thu 4/17

12:30 am-11:15 am

1 stop20h 45m

$1,133

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

Wed 4/23

2:05 pm-9:50 am

2 stops33h 45m

Seattle/Tacoma Intl

Wed 4/30

4:15 pm-8:40 am

2 stops26h 25m

$1,415

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

Tue 5/6

7:25 pm-4:00 pm

2 stops34h 35m

Seattle/Tacoma Intl

Mon 7/7

5:40 pm-8:35 am

2 stops24h 55m

$1,475

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

Thu 4/17

11:25 am-10:54 pm

2 stops25h 29m

Seattle/Tacoma Intl

Sat 5/17

6:52 pm-10:15 am

2 stops25h 23m

$1,645

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 26 results
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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 July is currently the most expensive (average of $411). 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 March 31, 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.

Rainfall in Washington by month

Plan your trip to Washington by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in State of Washington ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit State of Washington when rainfall is around 0.7 in.

Temperature in Washington by month

Plan your trip to Washington by taking into account the average temperature totals by month.

If weather is an important factor for your trip to State of Washington, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 March 31, 2025.
See what other customers who have flown with EVA Air, Korean Air and China Airlines from Phnom Penh to Washington have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,170 reviews

Overall

8.4

Crew

8.6

Food

8.1

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
EVA Air
8.4
Very good
1,170 reviews
EVA Air
8.4
Very good
1,170 reviews

Overall

8.4

Crew

8.6

Food

8.1

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Korean Air
8.4
Very good
1,051 reviews
EVA Air
8.4
Very good
1,170 reviews

Overall

8.4

Crew

8.6

Food

8.1

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
China Airlines
8.2
Very good
723 reviews
EVA Air
8.4
Very good
1,170 reviews

Overall

8.4

Crew

8.6

Food

8.1

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Asiana Airlines
8.2
Very good
440 reviews
EVA Air
8.4
Very good
1,170 reviews

Overall

8.4

Crew

8.6

Food

8.1

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Singapore Airlines
8.1
Very good
1,286 reviews
EVA Air
8.4
Very good
1,170 reviews

Overall

8.4

Crew

8.6

Food

8.1

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

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 cheapest airlines to fly from Phnom Penh to State of Washington one-way?

    $492 is the cheapest one-way deal found within the past few days, from Philippine Airlines. You may also be able to find cheap deals on China Airlines and Korean Air, with prices starting from $548 and $646, respectively.

  • 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 - Portland or Phnom Penh Pochentong - Spokane 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 July is currently the most expensive (average of $411). 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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Alternative routes for Phnom Penh to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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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 March 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$742Average$980FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$831Average$1,118FlexibilityNo cancel feeOn-time81%
China AirlinesCheapest$928Average$1,217FlexibilityNo cancel feeOn-time70%
EVA AirCheapest$1,083Average$1,252FlexibilityNo cancel feeOn-time74%
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