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$484+ 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 6/22. Fares are subject to change and may not be available on all flights or dates of travel.
PNH — SEA
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
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 junio 12, 2025.

Round-trip from

$763
(Trip.com)

One-way from

$484
(Trip.com)

Popular in

July

Cheapest in

November

Average price

$1,076
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. 9% potential increase in price ($119 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 June 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 junio 12, 2025.

This Trip.com deal was found by Cheapflights users on 6/11. 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.
sáb. 8/231:15 amPNH - SEA
1 stop32h 00mPhilippine Airlines
mié. 9/1011:35 pmSEA - PNH
1 stop34h 40mPhilippine Airlines
Deal found 6/11$763
This CheapOair deal was found by Cheapflights users on 6/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/1811:30 pmPNH - SEA
1 stop27h 15mMultiple Airlines
sáb. 10/182:15 pmSEA - PNH
1 stop18h 40mMultiple Airlines
Deal found 6/12$913
This Asiana Airlines deal was found by Cheapflights users on 6/12. 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 Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/1911:55 pmPNH - SEA
1 stop26h 35mAsiana Airlines
vie. 6/272:15 pmSEA - PNH
1 stop18h 40mAsiana Airlines
Deal found 6/12$938
This oojo deal was found by Cheapflights users on 6/11. 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.
mié. 10/86:55 pmPNH - SEA
1 stop27h 50mSingapore Airlines
jue. 10/309:45 amSEA - PNH
1 stop32h 50mSingapore Airlines
Deal found 6/11$1,077
This oojo deal was found by Cheapflights users on 6/12. 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. 6/2012:35 pmPNH - SEA
1 stop20h 15mEVA Air
jue. 6/2612:50 amSEA - PNH
1 stop20h 25mEVA Air
Deal found 6/12$1,135
This oojo deal was found by Cheapflights users on 6/12. 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.
mié. 7/2311:30 pmPNH - SEA
1 stop25h 20mKorean Air
vie. 10/1712:50 pmSEA - PNH
1 stop19h 20mKorean Air
Deal found 6/12$1,169
This oojo deal was found by Cheapflights users on 6/12. 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.
lun. 8/115:10 pmPNH - SEA
1 stop16h 35mChina Airlines
sáb. 10/116:59 pmSEA - PNH
2 stops31h 06mChina Airlines
Deal found 6/12$1,187
This oojo deal was found by Cheapflights users on 6/12. 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.
jue. 7/1712:35 pmPNH - PDX
2 stops31h 45mEVA Air
lun. 8/41:25 pmPDX - PNH
2 stops31h 50mEVA Air
Deal found 6/12$1,273
This Mytrip deal was found by Cheapflights users on 6/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 7/176:00 pmPNH - PDX
3 stops34h 50mMultiple Airlines
lun. 8/47:40 pmPDX - PNH
2 stops31h 20mMultiple Airlines
Deal found 6/11$1,282
This FlightHub deal was found by Cheapflights users on 6/12. 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.
mié. 7/1612:10 amPNH - PDX
2 stops29h 46mChina Eastern
lun. 8/46:15 amPDX - PNH
2 stops27h 00mChina Eastern
Deal found 6/12$2,263
This Qatar Airways deal was found by Cheapflights users on 6/12. 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.
jue. 7/175:40 pmPNH - PDX
3 stops65h 06mQatar Airways
lun. 8/410:30 amPDX - PNH
3 stops39h 45mQatar Airways
Deal found 6/12$2,388
This CheapOair deal was found by Cheapflights users on 6/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 8/1012:10 amPNH - SEA
2 stops30h 41mChina Eastern
sáb. 10/116:15 amSEA - PNH
2 stops27h 00mChina Eastern
Deal found 6/12$2,533

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 junio 12, 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. 8/23

1:15 am-7:15 pm

1 stop32h 00m

Seattle/Tacoma Intl

mié. 9/10

11:35 pm-12:15 am

1 stop34h 40m

$763

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

lun. 8/18

11:30 pm-12:45 pm

1 stop27h 15m

Seattle/Tacoma Intl

sáb. 10/18

2:15 pm-10:55 pm

1 stop18h 40m

$913

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

dom. 8/24

11:55 pm-12:45 pm

1 stop26h 50m

Seattle/Tacoma Intl

mié. 9/10

2:15 pm-10:55 pm

1 stop18h 40m

$965

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

mié. 10/8

6:55 pm-8:45 am

1 stop27h 50m

Seattle/Tacoma Intl

jue. 10/30

9:45 am-8:35 am

1 stop32h 50m

$1,077

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

mié. 7/23

12:35 pm-7:50 pm

1 stop21h 15m

Seattle/Tacoma Intl

jue. 10/16

1:30 am-11:15 am

1 stop19h 45m

$1,137

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

mié. 7/23

11:30 pm-10:50 am

1 stop25h 20m

Seattle/Tacoma Intl

vie. 10/17

12:50 pm-10:10 pm

1 stop19h 20m

$1,169

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

lun. 8/11

5:10 pm-7:45 pm

1 stop16h 35m

Seattle/Tacoma Intl

sáb. 10/11

6:59 pm-4:05 pm

2 stops31h 06m

$1,187

Phnom PenhPortland

PNH - PDX

PNHPDX

Phnom Penh Pochentong

jue. 7/17

12:35 pm-6:20 am

2 stops31h 45m

Portland

lun. 8/4

1:25 pm-11:15 am

2 stops31h 50m

$1,273

Phnom PenhPortland

PNH - PDX

PNHPDX

Phnom Penh Pochentong

jue. 7/17

6:00 pm-2:50 pm

3 stops34h 50m

Portland

lun. 8/4

7:40 pm-5:00 pm

2 stops31h 20m

$1,282

Phnom PenhPortland

PNH - PDX

PNHPDX

Phnom Penh Pochentong

mié. 7/16

12:10 am-3:56 pm

2 stops29h 46m

Portland

lun. 8/4

6:15 am-11:15 pm

2 stops27h 00m

$2,263

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 24 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 $391). 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 junio 12, 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 junio 12, 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
1,202 reviews

Food

8.1

Entertainment

8.0

Overall

8.4

Boarding

8.4

Comfort

8.3

Crew

8.6

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
1,202 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Entertainment

8.0

Overall

8.4

Boarding

8.4

Comfort

8.3

Crew

8.6

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
1,088 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Entertainment

8.0

Overall

8.4

Boarding

8.4

Comfort

8.3

Crew

8.6

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
China Airlines
8.3
Very good
738 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Entertainment

8.0

Overall

8.4

Boarding

8.4

Comfort

8.3

Crew

8.6

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
440 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Entertainment

8.0

Overall

8.4

Boarding

8.4

Comfort

8.3

Crew

8.6

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
Emirates
8.1
Very good
3,264 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Entertainment

8.0

Overall

8.4

Boarding

8.4

Comfort

8.3

Crew

8.6

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?

    $496 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 China Airlines and EVA Air, with prices starting from $637 and $716, 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 July is currently the most expensive (average of $391). 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.

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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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$707Average$972FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$831Average$1,053FlexibilityNo cancel feeOn-time81%
China AirlinesCheapest$991Average$1,150FlexibilityNo cancel feeOn-time70%
EVA AirCheapest$1,073Average$1,274FlexibilityNo cancel feeOn-time74%

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