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Cheap flights from Phnom Penh (PNH) to Washington

PNH — SEA
Mar 8 — Mar 151
Sun 3/8
Sun 3/15
1 adult, Economy
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Find flight deals from Phnom Penh to Washington

Keep the following information in mind while searching for Phnom Penh to Washington flight deals. Data was last updated February 6, 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.
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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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Cheapflights Insights

Everything you need to know about your flight from Phnom Penh to Washington

What is the cheapest month to book a flight from Phnom Penh to State of Washington?

Currently, November is the cheapest month in which you can book a flight from Phnom Penh to State of Washington (average of $697). Flying from Phnom Penh to State of Washington 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 Washington

Get insights into the airlines that provide service to Washington. 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 Washington. Reviews last updated February 6, 2026.
Read reviews from past customers who have flown EVA Air, Korean Air, and China Airlines from Phnom Penh to Washington. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,347 reviews

Food

8.1

Comfort

8.3

Boarding

8.4

Crew

8.6

Entertainment

8.0

Overall

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
1,347 reviews
EVA Air
8.4
Very good
1,347 reviews

Food

8.1

Comfort

8.3

Boarding

8.4

Crew

8.6

Entertainment

8.0

Overall

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
1,347 reviews

Food

8.1

Comfort

8.3

Boarding

8.4

Crew

8.6

Entertainment

8.0

Overall

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
1,347 reviews

Food

8.1

Comfort

8.3

Boarding

8.4

Crew

8.6

Entertainment

8.0

Overall

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
503 reviews
EVA Air
8.4
Very good
1,347 reviews

Food

8.1

Comfort

8.3

Boarding

8.4

Crew

8.6

Entertainment

8.0

Overall

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 Washington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Phnom Penh to Washington?

    If you book a flight to Washington from Phnom Penh, you will be flying from Pochentong, which is the city’s only airport. Phnom Penh Pochentong (PNH) is located 5.0 mi from the center of Phnom Penh.

  • What are the cheapest airlines to fly from Phnom Penh to State of Washington one-way?

    $501 is the cheapest one-way deal found within the past few days, from Korean Air. You may also be able to find cheap deals on EVA Air and China Airlines, with prices starting from $552 and $618, respectively.

  • What are the most popular routes from Phnom Penh to State of Washington?

    Most travelers choose Phnom Penh Pochentong - Seattle/Tacoma Intl, Phnom Penh Pochentong - Spokane or Phnom Penh Pochentong - Portland when deciding on the best route from Phnom Penh to State of Washington.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Phnom Penh to Washington 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 State of Washington?

    Currently, November is the cheapest month in which you can book a flight from Phnom Penh to State of Washington (average of $697). Flying from Phnom Penh to State of Washington 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.

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Top 4 airlines flying from Phnom Penh to Washington

Discover the top 4 airlines that operate flights from Phnom Penh to Washington. 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 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$805Average$1,037FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$831Average$976FlexibilityNo cancel feeOn-time81%
China AirlinesCheapest$954Average$1,057FlexibilityNo cancel feeOn-time70%
EVA AirCheapest$1,089Average$1,209FlexibilityNo cancel feeOn-time74%

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