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$497+ 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 10/30. Fares are subject to change and may not be available on all flights or dates of travel.
PNH — SEA
ago. 3 — ago. 101
dom. 8/3
dom. 8/10
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 julio 29, 2025.

Round-trip from

$806
(oojo)

One-way from

$497
(Travelocity)

Popular in

January

Cheapest in

November

Average price

$1,098
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. 3% potential increase in price ($41 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in July 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 julio 29, 2025.

This oojo deal was found by Cheapflights users on 7/27. 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.
sáb. 9/2011:55 pmPNH - SEA
1 stop26h 35mAsiana Airlines
lun. 10/202:15 pmSEA - PNH
1 stop18h 40mAsiana Airlines
Deal found 7/27$806
This Trip.com deal was found by Cheapflights users on 7/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/111:15 amPNH - SEA
1 stop32h 00mMultiple Airlines
vie. 9/1912:50 pmSEA - PNH
1 stop19h 20mMultiple Airlines
Deal found 7/29$898
This Korean Air deal was found by Cheapflights users on 7/29. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/1211:30 pmPNH - SEA
1 stop25h 10mKorean Air
vie. 9/1912:50 pmSEA - PNH
1 stop19h 20mKorean Air
Deal found 7/29$981
This oojo deal was found by Cheapflights users on 7/29. 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.
vie. 9/1212:35 pmPNH - SEA
1 stop20h 15mEVA Air
jue. 9/1812:30 amSEA - PNH
1 stop20h 45mEVA Air
Deal found 7/29$1,089
This China Eastern deal was found by Cheapflights users on 7/28. 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 Eastern is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/912:10 amPNH - GEG
2 stops35h 14mChina Eastern
mar. 10/146:30 amGEG - PNH
2 stops26h 45mChina Eastern
Deal found 7/28$1,688
This Delta deal was found by Cheapflights users on 7/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/1011:30 pmPNH - GEG
2 stops35h 35mDelta
mar. 10/146:10 amGEG - PNH
2 stops26h 00mDelta
Deal found 7/28$1,789
This Korean Air deal was found by Cheapflights users on 7/27. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/1011:30 pmPNH - GEG
2 stops36h 08mKorean Air
mar. 10/149:17 amGEG - PNH
2 stops22h 53mKorean Air
Deal found 7/27$1,794
This Qatar Airways deal was found by Cheapflights users on 7/28. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/105:40 pmPNH - GEG
3 stops42h 56mQatar Airways
mar. 10/147:00 amGEG - PNH
3 stops43h 15mQatar Airways
Deal found 7/28$1,987

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 julio 29, 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

sáb. 9/20

11:55 pm-12:30 pm

1 stop26h 35m

Seattle/Tacoma Intl

lun. 10/20

2:15 pm-10:55 pm

1 stop18h 40m

$806

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

jue. 9/11

1:15 am-7:15 pm

1 stop32h 00m

Seattle/Tacoma Intl

vie. 9/19

12:50 pm-10:10 pm

1 stop19h 20m

$898

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

vie. 9/12

11:30 pm-10:40 am

1 stop25h 10m

Seattle/Tacoma Intl

vie. 9/19

12:50 pm-10:10 pm

1 stop19h 20m

$981

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

vie. 9/12

12:35 pm-6:50 pm

1 stop20h 15m

Seattle/Tacoma Intl

jue. 9/18

12:30 am-11:15 am

1 stop20h 45m

$1,089

Phnom PenhSpokane

PNH - GEG

PNHGEG

Phnom Penh Pochentong

jue. 10/9

12:10 am-9:24 pm

2 stops35h 14m

Spokane

mar. 10/14

6:30 am-11:15 pm

2 stops26h 45m

$1,688

Phnom PenhSpokane

PNH - GEG

PNHGEG

Phnom Penh Pochentong

vie. 10/10

11:30 pm-9:05 pm

2 stops35h 35m

Spokane

mar. 10/14

6:10 am-10:10 pm

2 stops26h 00m

$1,789

Phnom PenhSpokane

PNH - GEG

PNHGEG

Phnom Penh Pochentong

vie. 10/10

11:30 pm-9:38 pm

2 stops36h 08m

Spokane

mar. 10/14

9:17 am-10:10 pm

2 stops22h 53m

$1,794

Phnom PenhSpokane

PNH - GEG

PNHGEG

Phnom Penh Pochentong

vie. 10/10

5:40 pm-10:36 pm

3 stops42h 56m

Spokane

mar. 10/14

7:00 am-4:15 pm

3 stops43h 15m

$1,987

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

jue. 10/30

9:35 am-8:10 am

1 stop36h 35m

$497

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

sáb. 8/9

1:15 am-7:15 pm

1 stop32h 00m

$598

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 15 results
1
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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 June is currently the most expensive (average of $389). 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 julio 29, 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.

How much does it cost to fly round-trip from Phnom Penh to State of Washington?

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 julio 29, 2025.
Read reviews from past customers who have flown EVA Air, Korean Air, and Asiana 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
1,221 reviews

Crew

8.6

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
EVA Air
8.4
Very good
1,221 reviews
EVA Air
8.4
Very good
1,221 reviews

Crew

8.6

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Korean Air
8.4
Very good
1,121 reviews
EVA Air
8.4
Very good
1,221 reviews

Crew

8.6

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Asiana Airlines
8.2
Very good
465 reviews
EVA Air
8.4
Very good
1,221 reviews

Crew

8.6

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Singapore Airlines
8.1
Very good
1,338 reviews
EVA Air
8.4
Very good
1,221 reviews

Crew

8.6

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Delta
8.0
Very good
7,977 reviews
EVA Air
8.4
Very good
1,221 reviews

Crew

8.6

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

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?

    $497 is the cheapest one-way deal found within the past few days, from Singapore Airlines. You may also be able to find cheap deals on Philippine Airlines and China Eastern, with prices starting from $598 and $801, 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 - 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 $389). 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 julio 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$707Average$936FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$831Average$1,053FlexibilityNo cancel feeOn-time81%
China AirlinesCheapest$991Average$1,105FlexibilityNo cancel feeOn-time70%
EVA AirCheapest$1,062Average$1,162FlexibilityNo cancel feeOn-time74%

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