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$484+ 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 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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Cheapflights Tip: The best prices from Phnom Penh Pochentong to Seattle/Tacoma Intl are usually found in November or May, 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 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 Seattle/Tacoma Intl
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One-way flight from Phnom Penh Pochentong to Seattle/Tacoma Intl
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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 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 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 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
This Emirates 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/158:50 pmPNH - SEA
3 stops36h 25mEmirates
mié. 10/1510:25 amSEA - PNH
3 stops40h 10mEmirates
Deal found 6/12$2,609
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 7/265:40 pmPNH - SEA
3 stops36h 28mQatar Airways
sáb. 8/23:38 pmSEA - PNH
3 stops34h 37mQatar Airways
Deal found 6/11$3,424

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 junio 12, 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

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 PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

dom. 8/10

12:10 am-4:51 pm

2 stops30h 41m

Seattle/Tacoma Intl

sáb. 10/11

6:15 am-11:15 pm

2 stops27h 00m

$2,533

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

vie. 8/15

8:50 pm-7:15 pm

3 stops36h 25m

Seattle/Tacoma Intl

mié. 10/15

10:25 am-4:35 pm

3 stops40h 10m

$2,609

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

sáb. 7/26

5:40 pm-4:08 pm

3 stops36h 28m

Seattle/Tacoma Intl

sáb. 8/2

3:38 pm-4:15 pm

3 stops34h 37m

$3,424

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 16 results
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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 June 9, 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 $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 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 junio 12, 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 junio 12, 2025.
Get a feel of what it's like to fly with EVA Air, Korean Air and China Airlines from Phnom Penh to Seattle by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,202 reviews

Overall

8.4

Food

8.1

Boarding

8.4

Comfort

8.3

Entertainment

8.0

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

Overall

8.4

Food

8.1

Boarding

8.4

Comfort

8.3

Entertainment

8.0

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

Overall

8.4

Food

8.1

Boarding

8.4

Comfort

8.3

Entertainment

8.0

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

Overall

8.4

Food

8.1

Boarding

8.4

Comfort

8.3

Entertainment

8.0

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

Overall

8.4

Food

8.1

Boarding

8.4

Comfort

8.3

Entertainment

8.0

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

Overall

8.4

Food

8.1

Boarding

8.4

Comfort

8.3

Entertainment

8.0

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 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 $763, was found to be the cheapest airline from Phnom Penh to Seattle.Alternate airlines to your destination round-trip include Asiana Airlines and Singapore Airlines. Philippine Airlines is 33% 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 $496 on Singapore Airlines. Other airlines that offer cheap prices include China Airlines from $637 and EVA Air from $716 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 $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.

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
Ocean Shores
Lacey
Leavenworth
Federal Way
Lynnwood
Olympia
Shoreline
Kent
Cle Elum
Centralia
Kirkland
Aberdeen
Renton
Shelton
Silverdale
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 Spokane flights
Phnom Penh to Portland 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 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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