What are the cheapest airlines flying from Phnom Penh to Seattle round-trip?

Asiana Airlines, at $775, was found to be the cheapest airline from Phnom Penh to Seattle. An alternate airline flying to your destination would be EVA Air. Asiana Airlines is 20% 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 $579 on Korean Air. Other airlines that offer cheap prices include China Airlines from $636 and EVA Air from $698 one-way.

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.

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).

What is the cheapest time of day to fly from PNH to SEA?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Phnom Penh to Seattle as you normally would.

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.

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.

Find Cheap Flights from Phnom Penh to Seattle

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Phnom Penh to Seattle with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from Phnom Penh to Seattle

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Popular in	August
Cheapest in	November
Average price	$969

Provider with most accurate pricing for Phnom Penh Pochentong-Seattle/Tacoma Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Phnom Penh Pochentong-Seattle/Tacoma Intl flights.

Search Deals

Highest demand for flights based on searches. 7% potential increase in price ($73 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($28 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in May 2026

Search Deals

Compare providers for flights from Phnom Penh to Seattle

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 May.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy2 stars	Trust Score*3 stars
oojo	Price Accuracy3 stars	Trust Score*2 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.

PNH-SEA

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 Seattle

See what other customers who have flown with EVA Air and Asiana 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

8.5

Very good

1,457 reviews

Reviews

1 / 20

10.0

Excellent

Daisy,May 2026

SFO - TPE

This ways excellent experience when I took the EVA airline. We will take EVA again!

EVA Air

8.5

Very good

1,457 reviews

EVA Air

8.5

Very good

1,457 reviews

Reviews

1 / 20

10.0

Excellent

Daisy,May 2026

SFO - TPE

This ways excellent experience when I took the EVA airline. We will take EVA again!

Asiana Airlines

8.1

Very good

534 reviews

EVA Air

8.5

Very good

1,457 reviews

Reviews

1 / 20

10.0

Excellent

Daisy,May 2026

SFO - TPE

This ways excellent experience when I took the EVA airline. We will take EVA again!

Related info for your journey

What are the cheapest airlines flying from Phnom Penh to Seattle round-trip?
Asiana Airlines, at $775, was found to be the cheapest airline from Phnom Penh to Seattle. An alternate airline flying to your destination would be EVA Air. Asiana Airlines is 20% 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 $579 on Korean Air. Other airlines that offer cheap prices include China Airlines from $636 and EVA Air from $698 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.

See more FAQs

SeaTac

Tacoma

Ocean Shores

Olympia

Lacey

Edmonds

Leavenworth

Snoqualmie

Tumwater

Tukwila

Puyallup

Kent

Lynnwood

Renton

Ellensburg

Fife

Lakewood

Issaquah

Marysville

Shoreline

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Complete your trip

Flights by cabin class

Other flight options

Popular flights

Seattle flight routes

Alternative routes for Phnom Penh to Seattle

Phnom Penh to Portland flights

Top 2 airlines flying from Phnom Penh to Seattle

Airline	Cheapest	Average	Flexibility	On-time
Asiana Airlines	Cheapest$775	Average$932	FlexibilityNo cancel fee	On-time76%
EVA Air	Cheapest$1,089	Average$1,186	FlexibilityNo cancel fee	On-time74%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

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

Find cheap flights from Phnom Penh to Seattle with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Phnom Penh to Seattle

Most accurate provider

Most trusted provider

Popular in

Cheapest in

Average price

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 May.

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.

Reviews of airlines servicing Seattle

See what other customers who have flown with EVA Air and Asiana 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.

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?

What are the cheapest airlines to fly from Phnom Penh to Seattle one-way?

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

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

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

Traveling to a place near Seattle?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Phnom Penh to Seattle

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Phnom Penh to Seattle by cabin class

Find flights from Phnom Penh to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Phnom Penh and Seattle flights

Browse other Phnom Penh and Seattle flight options. Last updated on May 21, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Other flights to Seattle

Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on May 21, 2026.

Top 2 airlines flying from Phnom Penh to Seattle

100% Free

Book with Flexibility

Travel Smart