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Phnom Penh

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

SEA — PNH
Jul 16 — Jul 231
Thu 7/16
Thu 7/23
1 adult, Economy
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Find flight deals from Seattle to Phnom Penh

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Phnom Penh (PNH). 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 June 16, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

June

Cheapest in

October

Average price

$1,327
Provider with most accurate pricing for Seattle/Tacoma Intl-Phnom Penh Pochentong flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Phnom Penh Pochentong flights.
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Highest demand for flights based on searches. 21% potential increase in price ($261 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($43 potential savings vs. average RT price).
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Average for round-trip flights in June 2026
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Compare providers for flights from Seattle to Phnom Penh

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 Seattle to Phnom Penh in June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*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 Seattle-Phnom Penh flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Phnom Penh flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Phnom Penh flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Phnom Penh 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 Seattle-Phnom Penh 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 Seattle to Phnom Penh

Have a flexible travel schedule? Discover the best time to fly to Phnom Penh from Seattle 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.

Reviews of airlines servicing Phnom Penh

Get insights into the airlines that provide service to Phnom Penh. 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 Phnom Penh. Reviews last updated June 16, 2026.
Read reviews from past customers who have flown EVA Air,Korean Air, andChina Airlines from Seattle to Phnom Penh. 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
8.5
Very good
1,476 reviews

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Food

8.1

Overall

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Tony,Jun 2026

NRT - TPE

Great flight and good food…will fly again on Eva air👍🏼
EVA Air
8.5
Very good
1,476 reviews
EVA Air
8.5
Very good
1,476 reviews

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Food

8.1

Overall

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Tony,Jun 2026

NRT - TPE

Great flight and good food…will fly again on Eva air👍🏼
Korean Air
8.4
Very good
1,218 reviews
EVA Air
8.5
Very good
1,476 reviews

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Food

8.1

Overall

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Tony,Jun 2026

NRT - TPE

Great flight and good food…will fly again on Eva air👍🏼
China Airlines
8.3
Very good
829 reviews
EVA Air
8.5
Very good
1,476 reviews

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Food

8.1

Overall

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Tony,Jun 2026

NRT - TPE

Great flight and good food…will fly again on Eva air👍🏼
Singapore Airlines
8.2
Very good
1,545 reviews
EVA Air
8.5
Very good
1,476 reviews

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Food

8.1

Overall

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Tony,Jun 2026

NRT - TPE

Great flight and good food…will fly again on Eva air👍🏼
Asiana Airlines
8.1
Very good
544 reviews
EVA Air
8.5
Very good
1,476 reviews

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Food

8.1

Overall

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Tony,Jun 2026

NRT - TPE

Great flight and good food…will fly again on Eva air👍🏼

Related info for your journey

Find useful and relevant information for your journey from Seattle to Phnom Penh. 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 Seattle to Phnom Penh round-trip?

    Our cheapest airline available from Seattle to Phnom Penh is Singapore Airlines. Our recent data shows that you can find tickets from as low as $702 on this airline. Additional options worth looking into are Asiana Airlines and Korean Air, starting at $766 and $775 round-trip. Singapore Airlines is 25% cheaper than the average price of flights available within the next 90 days to this destination.

  • Where are the most common layover locations when flying from Seattle to Phnom Penh?

    Seattle to Phnom Penh flights have a layover in Taipei City most of the time.

  • What are some popular things to do or see while on a layover in Taipei City?

    The majority of Taipei City visitors spend their time at Taipei 101, Raohe Street Night Market, and Shilin Night Market. Taipei 101, Raohe Street Night Market, and Shilin Night Market can be accessed by traveling approximately 21.0 mi, 21.6 mi, and 18.3 mi, respectively from Taipei City Taiwan Taoyuan Intl. Travelers in need of a car in Taipei City can rent one for about $66 per day.

  • Where are the least popular layover locations for Seattle to Phnom Penh flights?

    Flights departing from Seattle and landing in Phnom Penh layover in Seoul least frequently.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to Phnom Penh by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Complete your trip

Complete your trip to Phnom Penh by adding a car rental and/or hotel reservation to your travel itinerary.
Phnom Penh car rentals
Phnom Penh Pochentong Airport car rentals

Top 5 airlines flying from Seattle to Phnom Penh

Discover the top 5 airlines that operate flights from Seattle to Phnom Penh. 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 June 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$702Average$792FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$766Average$1,031FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$775Average$864FlexibilityNo cancel feeOn-time81%
China AirlinesCheapest$910Average$1,239FlexibilityNo cancel feeOn-time70%
EVA AirCheapest$1,005Average$1,264FlexibilityNo cancel feeOn-time74%

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