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Cheap flights from Phnom Penh (PNH) to Seattle (SEA)

PNH — SEA
Mar 4 — Mar 111
Wed 3/4
Wed 3/11
1 adult, Economy
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Find 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 February 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

January

Cheapest in

November

Average price

$1,139
Provider with most accurate pricing for Phnom Penh Pochentong-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Phnom Penh Pochentong-Seattle/Tacoma Intl flights.
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($144 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($55 potential savings vs. average RT price).
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Average for round-trip flights in February 2026
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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 February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Phnom Penh-Seattle flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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

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

Currently, November is the cheapest month in which you can book a flight from Phnom Penh to Seattle (average of $697). Flying from Phnom Penh to Seattle in January is currently the most expensive (average of $1,401). 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.

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 February 2, 2026.
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
1,340 reviews

Food

8.1

Entertainment

8.0

Comfort

8.3

Crew

8.6

Overall

8.4

Boarding

8.4

Reviews

1 / 20
6.0
Good

Hannah,Jan 2026

TPE - SFO

I like the flight attendants the most. The are very helpful.
EVA Air
8.4
Very good
1,340 reviews
EVA Air
8.4
Very good
1,340 reviews

Food

8.1

Entertainment

8.0

Comfort

8.3

Crew

8.6

Overall

8.4

Boarding

8.4

Reviews

1 / 20
6.0
Good

Hannah,Jan 2026

TPE - SFO

I like the flight attendants the most. The are very helpful.
Korean Air
8.4
Very good
1,188 reviews
EVA Air
8.4
Very good
1,340 reviews

Food

8.1

Entertainment

8.0

Comfort

8.3

Crew

8.6

Overall

8.4

Boarding

8.4

Reviews

1 / 20
6.0
Good

Hannah,Jan 2026

TPE - SFO

I like the flight attendants the most. The are very helpful.
China Airlines
8.3
Very good
803 reviews
EVA Air
8.4
Very good
1,340 reviews

Food

8.1

Entertainment

8.0

Comfort

8.3

Crew

8.6

Overall

8.4

Boarding

8.4

Reviews

1 / 20
6.0
Good

Hannah,Jan 2026

TPE - SFO

I like the flight attendants the most. The are very helpful.
Asiana Airlines
8.1
Very good
502 reviews
EVA Air
8.4
Very good
1,340 reviews

Food

8.1

Entertainment

8.0

Comfort

8.3

Crew

8.6

Overall

8.4

Boarding

8.4

Reviews

1 / 20
6.0
Good

Hannah,Jan 2026

TPE - SFO

I like the flight attendants the most. The are very helpful.

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 $805, 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 24% 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 $501 on Korean Air. Other airlines that offer cheap prices include EVA Air from $552 and China Airlines from $618 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, November is the cheapest month in which you can book a flight from Phnom Penh to Seattle (average of $697). Flying from Phnom Penh to Seattle in January is currently the most expensive (average of $1,401). 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
Tacoma
SeaTac
Lakewood
Ocean Shores
Olympia
Lynnwood
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Lacey
Renton
Puyallup
Kirkland
Kent
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Chehalis

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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.
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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 February 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$758Average$983FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$831Average$976FlexibilityNo cancel feeOn-time81%
China AirlinesCheapest$954Average$1,057FlexibilityNo cancel feeOn-time70%
EVA AirCheapest$1,089Average$1,208FlexibilityNo cancel feeOn-time74%

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