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$460+ Cheap flights from Phnom Penh (PNH) to Seattle (SEA)

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
May 5 — May 121
Mon 5/5
Mon 5/12
1 adult, Economy
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Cheapflights Tip: The best prices from Phnom Penh Pochentong to Seattle/Tacoma Intl are usually found in November or February, booked 76 days in advance, depart on a Wednesday or Saturday and return on a Tuesday

Cheap flight deals from Phnom Penh to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Phnom Penh (PNH) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 30, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$807
(oojo)

One-way from

$460
(oojo)

Popular in

July

Cheapest in

November

Average price

$1,180
Provider with most accurate pricing for Phnom Penh Pochentong-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Phnom Penh Pochentong-Seattle/Tacoma Intl flights.
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From Phnom Penh Pochentong to Seattle/Tacoma Intl
Search Deals
One-way flight from Phnom Penh Pochentong to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($134 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
Search Deals

Find flight deals from Phnom Penh to Seattle

Cheapest flights from Phnom Penh to Seattle
Explore the most affordable flight options available from Phnom Penh to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.

This oojo deal was found by Cheapflights users on 4/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/131:15 amPNH - SEA
1 stop32h 00mPhilippine Airlines
Thu 5/228:41 amSEA - PNH
2 stops49h 34mPhilippine Airlines
Deal found 4/28$807
This Mytrip deal was found by Cheapflights users on 4/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/143:35 pmPNH - SEA
2 stops34h 55mMultiple Airlines
Thu 5/222:15 pmSEA - PNH
2 stops30h 35mMultiple Airlines
Deal found 4/28$928
This CheapOair deal was found by Cheapflights users on 4/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1411:55 pmPNH - SEA
1 stop26h 35mAsiana Airlines
Thu 5/222:15 pmSEA - PNH
1 stop18h 40mAsiana Airlines
Deal found 4/28$962
This Korean Air deal was found by Cheapflights users on 4/29. 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.
Thu 6/511:30 pmPNH - SEA
1 stop28h 10mKorean Air
Thu 6/1212:55 pmSEA - PNH
1 stop19h 15mKorean Air
Deal found 4/29$977
This China Airlines deal was found by Cheapflights users on 4/29. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/235:10 pmPNH - SEA
1 stop16h 20mChina Airlines
Mon 7/141:40 amSEA - PNH
1 stop18h 10mChina Airlines
Deal found 4/29$1,015
This StudentUniverse deal was found by Cheapflights users on 4/28. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/236:55 pmPNH - SEA
1 stop51h 50mSingapore Airlines
Fri 10/1710:15 amSEA - PNH
1 stop32h 25mSingapore Airlines
Deal found 4/28$1,169
This oojo deal was found by Cheapflights users on 4/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1412:35 pmPNH - SEA
1 stop20h 55mEVA Air
Wed 5/211:50 amSEA - PNH
1 stop19h 25mEVA Air
Deal found 4/28$1,182
This Turkish Airlines deal was found by Cheapflights users on 4/29. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/79:40 amPNH - SEA
2 stops45h 35mTurkish Airlines
Wed 6/117:10 pmSEA - PNH
2 stops33h 25mTurkish Airlines
Deal found 4/29$1,598
This Ovago deal was found by Cheapflights users on 4/29. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/235:45 pmPNH - SEA
3 stops29h 25mVietnam Airlines
Tue 7/1511:50 amSEA - PNH
3 stops35h 10mVietnam Airlines
Deal found 4/29$1,605
This FlightHub deal was found by Cheapflights users on 4/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/412:10 amPNH - SEA
2 stops30h 35mChina Eastern
Thu 6/126:05 amSEA - PNH
2 stops27h 10mChina Eastern
Deal found 4/29$1,916
This Qatar Airways deal was found by Cheapflights users on 4/29. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/65:40 pmPNH - SEA
3 stops39h 16mQatar Airways
Thu 6/124:30 pmSEA - PNH
2 stops33h 45mQatar Airways
Deal found 4/29$1,989
This Emirates deal was found by Cheapflights users on 4/28. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/238:50 pmPNH - SEA
2 stops30h 35mEmirates
Fri 10/1710:55 amSEA - PNH
3 stops39h 40mEmirates
Deal found 4/28$2,134

Cheapflights Fare Finder

Customize your flight search to find flights from Phnom Penh to Seattle 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 April 30, 2025.
Use the filters below to find and compare flights from Phnom Penh to Seattle that are best for you.

Fly from

Phnom Penh

Fly to

Seattle

Route

Depart

Return

Price

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

Thu 6/5

1:15 am-7:15 pm

1 stop32h 00m

Seattle/Tacoma Intl

Thu 6/12

8:41 am-12:15 am

2 stops49h 34m

$950

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

Thu 6/5

11:30 pm-1:40 pm

1 stop28h 10m

Seattle/Tacoma Intl

Thu 6/12

12:55 pm-10:10 pm

1 stop19h 15m

$977

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

Mon 6/23

11:55 pm-12:30 pm

1 stop26h 35m

Seattle/Tacoma Intl

Tue 7/15

2:30 pm-10:55 pm

1 stop18h 25m

$985

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

Mon 6/23

5:10 pm-7:30 pm

1 stop16h 20m

Seattle/Tacoma Intl

Mon 7/14

1:40 am-9:50 am

1 stop18h 10m

$1,015

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

Mon 6/23

9:25 am-4:10 pm

2 stops20h 45m

Seattle/Tacoma Intl

Mon 7/14

1:15 am-6:35 pm

2 stops27h 20m

$1,024

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

Thu 6/5

12:35 pm-7:30 pm

1 stop20h 55m

Seattle/Tacoma Intl

Thu 6/12

1:50 am-11:15 am

1 stop19h 25m

$1,188

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

Sat 6/7

9:40 am-5:15 pm

2 stops45h 35m

Seattle/Tacoma Intl

Wed 6/11

7:10 pm-6:35 pm

2 stops33h 25m

$1,598

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

Mon 6/23

5:45 pm-9:10 am

3 stops29h 25m

Seattle/Tacoma Intl

Tue 7/15

11:50 am-1:00 pm

3 stops35h 10m

$1,605

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

Wed 6/4

12:10 am-4:45 pm

2 stops30h 35m

Seattle/Tacoma Intl

Thu 6/12

6:05 am-11:15 pm

2 stops27h 10m

$1,916

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

Fri 6/6

5:40 pm-6:56 pm

3 stops39h 16m

Seattle/Tacoma Intl

Thu 6/12

4:30 pm-4:15 pm

2 stops33h 45m

$1,989

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 18 results
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Compare providers for flights from Phnom Penh to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Phnom Penh to Seattle in April.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*2 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightnetworkPrice Accuracy-Trust Score*3 stars
ScholarTripPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy2 starsTrust Score*3 stars
business-class.comPrice Accuracy3 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Phnom Penh-Seattle flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Phnom Penh-Seattle flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Phnom Penh-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Phnom Penh-Seattle flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Phnom Penh-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Phnom Penh to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle 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 Seattle

How far ahead should I book a flight from Phnom Penh to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Phnom Penh to Seattle. Price data was last updated on April 25, 2025.

To ensure you get the cheapest price possible for a flight from Phnom Penh to Seattle, you should look to book at least 76 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Phnom Penh to Seattle?

Currently, January is the cheapest month in which you can book a flight from Phnom Penh to Seattle (average of $238). Flying from Phnom Penh to Seattle in July is currently the most expensive (average of $405). 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 SEA?

Find hourly flight availability from Phnom Penh to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 30, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 27% on flights from Phnom Penh to Seattle by exploring options for tickets at noon.

Rainfall in Seattle by month

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

In terms of precipitation, rainfall in Seattle 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 Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

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

If weather is an important factor for your trip to Seattle, 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 Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated April 30, 2025.
EVA Air
8.4
Very good
1,186 reviews

Food

8.1

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.
EVA Air
8.4
Very good
1,186 reviews
EVA Air
8.4
Very good
1,186 reviews

Food

8.1

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.
Korean Air
8.4
Very good
1,066 reviews
EVA Air
8.4
Very good
1,186 reviews

Food

8.1

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.
China Airlines
8.3
Very good
732 reviews
EVA Air
8.4
Very good
1,186 reviews

Food

8.1

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.
Asiana Airlines
8.2
Very good
442 reviews
EVA Air
8.4
Very good
1,186 reviews

Food

8.1

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.
Singapore Airlines
8.1
Very good
1,292 reviews
EVA Air
8.4
Very good
1,186 reviews

Food

8.1

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

Related info for your journey

Find useful and relevant information for your journey from Phnom Penh to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Phnom Penh to Seattle round-trip?

    Philippine Airlines, at $807, was found to be the cheapest airline from Phnom Penh to Seattle.Alternate airlines to your destination round-trip include Asiana Airlines and Korean Air. Philippine Airlines is 30% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Phnom Penh to Seattle one-way?

    One-way options have recently been found by users for as low as $460 on Philippine Airlines. Other airlines that offer cheap prices include China Airlines from $648 and Korean Air from $666 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Phnom Penh to Seattle 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 Seattle?

    Currently, January is the cheapest month in which you can book a flight from Phnom Penh to Seattle (average of $238). Flying from Phnom Penh to Seattle in July is currently the most expensive (average of $405). 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

Traveling to a place near Phnom Penh?

Book flights to Phnom Penh if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Renton
Ocean Shores
Lacey
Leavenworth
Federal Way
Olympia
Shoreline
Cle Elum
Centralia
Kent
Lynnwood
Aberdeen
Shelton
Silverdale
Redmond
Issaquah

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Phnom Penh to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Phnom Penh to Portland flights
Phnom Penh to Spokane flights

Top 4 airlines flying from Phnom Penh to Seattle

Discover the top 4 airlines that operate flights from Phnom Penh to Seattle. 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 April 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$742Average$978FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$831Average$1,112FlexibilityNo cancel feeOn-time81%
China AirlinesCheapest$928Average$1,217FlexibilityNo cancel feeOn-time70%
EVA AirCheapest$1,083Average$1,233FlexibilityNo cancel feeOn-time74%

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