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$2,350+ Cheap flights from Phnom Penh (PNH) to Seattle (SEA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
PNH — SEA
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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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 September 17, 2025.

Round-trip from

$2,350
(Etihad Airways)

Popular in

January

Cheapest in

September

Average price

$813
From Phnom Penh Pochentong to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 7% potential increase in price ($80 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).
Search Deals
Average for round-trip flights in September 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 September 17, 2025.

This Etihad Airways deal was found by Cheapflights users on 9/15. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/48:30 amPNH - SEA
2 stops49h 39mMultiple Airlines
Fri 7/3111:59 pmSEA - PNH
2 stops40h 46mMultiple Airlines
Deal found 9/15$2,350

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 September 17, 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

Sat 10/4

8:30 am-8:09 pm

2 stops49h 39m

Seattle/Tacoma Intl

Fri 7/31

11:59 pm-6:45 am

2 stops40h 46m

$2,350

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

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

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 June is currently the most expensive (average of $387). 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 September 17, 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.

How much does it cost to fly round-trip from Phnom Penh to Seattle?

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 September 17, 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
1,237 reviews

Entertainment

8.0

Food

8.1

Overall

8.4

Comfort

8.3

Crew

8.6

Boarding

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak
EVA Air
8.4
Very good
1,237 reviews
EVA Air
8.4
Very good
1,237 reviews

Entertainment

8.0

Food

8.1

Overall

8.4

Comfort

8.3

Crew

8.6

Boarding

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak
Korean Air
8.4
Very good
1,140 reviews
EVA Air
8.4
Very good
1,237 reviews

Entertainment

8.0

Food

8.1

Overall

8.4

Comfort

8.3

Crew

8.6

Boarding

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak
China Airlines
8.3
Very good
768 reviews
EVA Air
8.4
Very good
1,237 reviews

Entertainment

8.0

Food

8.1

Overall

8.4

Comfort

8.3

Crew

8.6

Boarding

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak
Asiana Airlines
8.2
Very good
481 reviews
EVA Air
8.4
Very good
1,237 reviews

Entertainment

8.0

Food

8.1

Overall

8.4

Comfort

8.3

Crew

8.6

Boarding

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak

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?

    Asiana Airlines, at $707, was found to be the cheapest airline from Phnom Penh to Seattle.Alternate airlines to your destination round-trip include Korean Air and China Airlines. Asiana Airlines is 33% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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 June is currently the most expensive (average of $387). 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
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Tacoma
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Ocean Shores
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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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$707Average$932FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$831Average$987FlexibilityNo cancel feeOn-time81%
China AirlinesCheapest$991Average$1,068FlexibilityNo cancel feeOn-time70%
EVA AirCheapest$1,062Average$1,176FlexibilityNo cancel feeOn-time74%

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