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$468+ 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 7/17. Fares are subject to change and may not be available on all flights or dates of travel.
PNH — SEA
jul. 5 — jul. 121
sáb. 7/5
sáb. 7/12
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 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 30, 2025.

Round-trip from

$873
(FlightHub)

One-way from

$468
(SmartFares)

Popular in

July

Cheapest in

November

Average price

$1,080
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 ($120 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 30, 2025.

This Gurufare deal was found by Cheapflights users on 6/30. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/11:15 amPNH - SEA
1 stop32h 00mPhilippine Airlines
dom. 7/2711:35 pmSEA - PNH
1 stop34h 40mPhilippine Airlines
Deal found 6/30$840
This Gotogate deal was found by Cheapflights users on 6/30. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 7/59:25 amPNH - SEA
2 stops45h 10mMultiple Airlines
jue. 8/141:15 amSEA - PNH
2 stops27h 20mMultiple Airlines
Deal found 6/30$1,054
This FlightHub deal was found by Cheapflights users on 6/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 7/2711:55 pmPNH - SEA
1 stop26h 50mAsiana Airlines
dom. 8/32:30 pmSEA - PNH
1 stop18h 25mAsiana Airlines
Deal found 6/28$1,056
This FlightHub deal was found by Cheapflights users on 6/29. 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.
sáb. 10/1112:35 pmPNH - SEA
1 stop20h 15mEVA Air
sáb. 10/1112:30 amSEA - PNH
1 stop20h 45mEVA Air
Deal found 6/29$1,094
This oojo deal was found by Cheapflights users on 6/30. 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.
mié. 7/211:30 pmPNH - SEA
1 stop25h 20mKorean Air
dom. 7/271:20 pmSEA - PNH
1 stop18h 50mKorean Air
Deal found 6/30$1,147

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 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

sáb. 7/26

1:15 am-7:15 pm

1 stop32h 00m

Seattle/Tacoma Intl

dom. 8/3

11:35 pm-12:15 am

1 stop34h 40m

$873

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

dom. 7/27

11:55 pm-12:45 pm

1 stop26h 50m

Seattle/Tacoma Intl

dom. 8/3

2:30 pm-10:55 pm

1 stop18h 25m

$1,056

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

sáb. 10/11

11:25 am-7:20 pm

2 stops21h 55m

Seattle/Tacoma Intl

sáb. 10/11

1:10 am-5:20 pm

2 stops26h 10m

$1,073

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

sáb. 10/11

12:35 pm-6:50 pm

1 stop20h 15m

Seattle/Tacoma Intl

sáb. 10/11

12:30 am-11:15 am

1 stop20h 45m

$1,094

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

sáb. 7/26

11:30 pm-10:50 am

1 stop25h 20m

Seattle/Tacoma Intl

sáb. 8/2

12:55 pm-10:10 pm

1 stop19h 15m

$1,400

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

vie. 10/10

12:10 am-4:59 pm

2 stops30h 49m

Seattle/Tacoma Intl

dom. 10/12

7:20 am-11:15 pm

2 stops25h 55m

$1,843

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

dom. 7/27

6:55 pm-12:06 am

3 stops43h 11m

Seattle/Tacoma Intl

dom. 8/3

7:00 am-8:40 am

3 stops35h 40m

$2,036

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

sáb. 10/11

5:40 pm-1:21 pm

3 stops33h 41m

Seattle/Tacoma Intl

dom. 10/12

3:57 pm-4:15 pm

3 stops34h 18m

$2,867

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

jue. 7/17

1:15 am-7:15 pm

1 stop32h 00m

$468

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

jue. 10/30

2:50 pm-8:10 am

1 stop31h 20m

$486

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/28

Showing 1-10 of 14 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 27, 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 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.

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 30, 2025.
See what other customers who have flown with EVA Air, Korean Air, and China Airlines from Phnom Penh to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,210 reviews

Food

8.1

Entertainment

8.0

Overall

8.4

Boarding

8.4

Crew

8.6

Comfort

8.3

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
1,210 reviews
EVA Air
8.4
Very good
1,210 reviews

Food

8.1

Entertainment

8.0

Overall

8.4

Boarding

8.4

Crew

8.6

Comfort

8.3

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
1,101 reviews
EVA Air
8.4
Very good
1,210 reviews

Food

8.1

Entertainment

8.0

Overall

8.4

Boarding

8.4

Crew

8.6

Comfort

8.3

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
745 reviews
EVA Air
8.4
Very good
1,210 reviews

Food

8.1

Entertainment

8.0

Overall

8.4

Boarding

8.4

Crew

8.6

Comfort

8.3

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
449 reviews
EVA Air
8.4
Very good
1,210 reviews

Food

8.1

Entertainment

8.0

Overall

8.4

Boarding

8.4

Crew

8.6

Comfort

8.3

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
1,319 reviews
EVA Air
8.4
Very good
1,210 reviews

Food

8.1

Entertainment

8.0

Overall

8.4

Boarding

8.4

Crew

8.6

Comfort

8.3

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 $873, was found to be the cheapest airline from Phnom Penh to Seattle.Alternate airlines to your destination round-trip include Asiana Airlines and EVA Air. Philippine Airlines is 23% 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 $468 on Philippine Airlines. Other airlines that offer cheap prices include Singapore Airlines from $486 and China Airlines from $714 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
Puyallup
Cle Elum
Centralia
Kent
Kirkland
Aberdeen
Renton
Shelton
Silverdale

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 junio 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$707Average$956FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$831Average$1,053FlexibilityNo cancel feeOn-time81%
China AirlinesCheapest$991Average$1,150FlexibilityNo cancel feeOn-time70%
EVA AirCheapest$1,062Average$1,167FlexibilityNo cancel feeOn-time74%

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