Cheap flights from Seattle (SEA) to Phnom Penh (PNH) from $582

This is the cheapest one-way flight price, found on 9/28. Prices may vary by date and flight preferences.
SEA — PNH
Oct 3 — Oct 101

The best prices from Seattle/Tacoma Intl to Phnom Penh Pochentong are usually found in April or September, booked 53 days in advance, depart on a Sunday or Wednesday and return on a Friday

How to find the cheapest flight from Seattle (SEA) to Phnom Penh (PNH)

All the information you need to plan the best SEA to PNH flight in 2023: compare Seattle to Phnom Penh flight prices with the expected peak season, weather and rainfall in Phnom Penh.

Popular in

June

Cheapest in

April

Round-trip from

$1,064

One-way from

$705
High demand for flights, 21% potential price rise
Best time to find cheap flights, 22% potential price drop
From Seattle/Tacoma Intl to Phnom Penh Pochentong
One-way flight from Seattle/Tacoma Intl to Phnom Penh Pochentong

SEA - PNH

Price

$1,064 - $2,219

PNH

Temperature

77 - 84.2 °F

PNH

Rainfall

0 - 9.8 inches

What is the cheapest day to fly round-trip from Seattle to Phnom Penh?

Users have found that leaving on a Saturday can be a cost-effective option. It’s possible to save up to 35% on your flight compared to booking on days when demand is much higher.

How far in advance should I book a flight from Seattle to Phnom Penh?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 53 days in advance, which can save you up to 31% on flights from Seattle to Phnom Penh compared to booking the week you need them. Waiting 53 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $1,542. For sooner than that we have options available in the next 3 days from $1,668.

What is the cheapest month to fly from Seattle to Phnom Penh?

Our data shows that April tends to be the cheapest month to fly to Phnom Penh from Seattle. Users have commonly found prices around $1,242 for the month, but tickets can be as low as $833. Due to multiple factors, prepare for potentially higher prices in June.

When is the cheapest time to fly from Seattle to Phnom Penh (SEA - PNH)?

One of the essential ways to save on airfare from Seattle to Phnom Penh is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight at noon could potentially save you up to 14% on airfare.

Cheap Singapore Airlines flights from Seattle to Phnom Penh

Peruse some of the lowest-priced Singapore Airlines flights we've found from Seattle to Phnom Penh. Make sure to check back often as deals are often changing.

Cheap Asiana Airlines flights from Seattle to Phnom Penh

Take a gander at the lowest prices we've found on Asiana Airlines flights from Seattle to Phnom Penh. Deals frequently update to provide users with more options.

Cheap Seattle to Phnom Penh flights in September & October 2023

The best prices found for SEA to PNH flights for September, October
These are some of the best deals we've found on flights to Phnom Penh in 2023 at this time. Check back soon for alternative fares.

Seattle to Phnom Penh 2023 flight deals

Cheap flights to Phnom Penh from Seattle found for this year
These are some of the best deals we've found on flights to Phnom Penh in 2023 at this time. Check back soon for alternative fares.

Seattle to Phnom Penh flights leaving soon

Late deals on return flights to Phnom Penh from Seattle, departing today and this week
Users seeking a last-minute flight from Seattle to Phnom Penh should consider booking one of these fares. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.

One-way flights to Phnom Penh from Seattle

The cheapest one-way flights from Seattle to Phnom Penh
Take a look at some of the one-way flights we've detected from Seattle to Phnom Penh. Users needing a return flight from Seattle to Phnom Penh should utilize the search form above.

Find flights from Seattle to Phnom Penh within your budget

Use the slider to find flights from Seattle to Phnom Penh that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

$1,001 - $1,612

Route

Depart

Return

Price

Seattle/Tacoma IntlPhnom Penh Pochentong

SEA - PNH

SEAPNH

Seattle/Tacoma Intl

Sat 1/13

1 stop37h 00m

Phnom Penh Pochentong

Fri 2/16

1 stop27h 40m

Seattle/Tacoma IntlPhnom Penh Pochentong

SEA - PNH

SEAPNH

Seattle/Tacoma Intl

Thu 1/18

1 stop37h 00m

Phnom Penh Pochentong

Fri 2/23

1 stop32h 30m

Seattle/Tacoma IntlPhnom Penh Pochentong

SEA - PNH

SEAPNH

Seattle/Tacoma Intl

Sun 1/7

1 stop19h 25m

Phnom Penh Pochentong

Thu 2/1

1 stop26h 05m

Seattle/Tacoma IntlPhnom Penh Pochentong

SEA - PNH

SEAPNH

Seattle/Tacoma Intl

Wed 3/6

2 stops27h 20m

Phnom Penh Pochentong

Fri 3/22

2 stops26h 04m

Seattle/Tacoma IntlPhnom Penh Pochentong

SEA - PNH

SEAPNH

Seattle/Tacoma Intl

Mon 1/22

2 stops29h 40m

Phnom Penh Pochentong

Mon 2/12

2 stops36h 25m

Seattle/Tacoma IntlPhnom Penh Pochentong

SEA - PNH

SEAPNH

Seattle/Tacoma Intl

Tue 3/5

1 stop20h 15m

Phnom Penh Pochentong

Fri 3/22

1 stop20h 25m

Seattle/Tacoma IntlPhnom Penh Pochentong

SEA - PNH

SEAPNH

Seattle/Tacoma Intl

Tue 12/5

2 stops24h 20m

Phnom Penh Pochentong

Sun 1/28

1 stop24h 10m

Seattle/Tacoma IntlPhnom Penh Pochentong

SEA - PNH

SEAPNH

Seattle/Tacoma Intl

Thu 1/11

2 stops32h 20m

Phnom Penh Pochentong

Tue 2/13

2 stops34h 00m

Seattle/Tacoma IntlPhnom Penh Pochentong

SEA - PNH

SEAPNH

Seattle/Tacoma Intl

Sun 1/7

2 stops36h 10m

Phnom Penh Pochentong

Tue 2/6

2 stops42h 05m

Flights are sorted by cheapest first

Deals found on 9/27

Reviews of airlines servicing Phnom Penh

Read through reviews of airlines operating flights from Seattle to Phnom Penh, such as Singapore Airlines, Asiana Airlines and EVA Air. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Asiana Airlines
8.3
Very good
64 reviews

Boarding

8.4

Overall

8.3

Entertainment

7.8

Food

8.4

Comfort

8.0

Crew

8.5

Reviews

1 / 10

Seats were quite small and packed tightly together. Old entertainment system (no touchscreen).

Asiana Airlines
8.3
Very good
64 reviews
Asiana Airlines
8.3
Very good
64 reviews

Boarding

8.4

Overall

8.3

Entertainment

7.8

Food

8.4

Comfort

8.0

Crew

8.5

Reviews

1 / 10

Seats were quite small and packed tightly together. Old entertainment system (no touchscreen).

Korean Air
8.2
Very good
356 reviews
Asiana Airlines
8.3
Very good
64 reviews

Boarding

8.4

Overall

8.3

Entertainment

7.8

Food

8.4

Comfort

8.0

Crew

8.5

Reviews

1 / 10

Seats were quite small and packed tightly together. Old entertainment system (no touchscreen).

EVA Air
8.1
Very good
196 reviews
Asiana Airlines
8.3
Very good
64 reviews

Boarding

8.4

Overall

8.3

Entertainment

7.8

Food

8.4

Comfort

8.0

Crew

8.5

Reviews

1 / 10

Seats were quite small and packed tightly together. Old entertainment system (no touchscreen).

Singapore Airlines
8.1
Very good
337 reviews
Asiana Airlines
8.3
Very good
64 reviews

Boarding

8.4

Overall

8.3

Entertainment

7.8

Food

8.4

Comfort

8.0

Crew

8.5

Reviews

1 / 10

Seats were quite small and packed tightly together. Old entertainment system (no touchscreen).

Cathay Pacific
7.5
Good
184 reviews
Asiana Airlines
8.3
Very good
64 reviews

Boarding

8.4

Overall

8.3

Entertainment

7.8

Food

8.4

Comfort

8.0

Crew

8.5

Reviews

1 / 10

Seats were quite small and packed tightly together. Old entertainment system (no touchscreen).

Related info for your journey

Useful info, stats and facts about Seattle to Phnom Penh flights.

Can I find flights from Seattle to Phnom Penh for under $1,100 on Cheapflights?

Yes, there are multiple flights from Seattle to Phnom Penh for under $1,100. The cheapest flight booked recently is on Singapore Airlines for just $1,001, but on average you can expect to pay $1,128.

Are there last-minute flights available from Seattle to Phnom Penh for under $1,600?

There are currently 11+ open flights from Seattle to Phnom Penh within the next 7 days for less than $1,600.

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 $1,001 on this airline. Additional options worth looking into are Asiana Airlines and EVA Air, starting at $1,064 and $1,175 round-trip. Singapore Airlines is 19% cheaper than the average price of flights available within the next 90 days to this destination.

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

For one-way options, check prices for EVA Air. According to our data, you can fly for as low as $705. Users have also found prices from $773 and $793 on Korean Air and Qatar Airways, respectively.

What are the most popular airlines that fly from Seattle to Phnom Penh?

What does SEA to PNH mean?

SEA stands for Seattle/Tacoma Intl Airport, while PNH stands for Phnom Penh Pochentong Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

Other flights from Seattle

Top 4 airlines flying from Seattle to Phnom Penh

The chart below displays the airlines Cheapflights users traveling from Seattle to Phnom Penh choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-time
Korean AirCheapest$779Average$1,239FlexibilityNo cancel feeOn-time81%
Search Korean Air flights
Singapore AirlinesCheapest$798Average$1,029FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Asiana AirlinesCheapest$864Average$1,320FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
EVA AirCheapest$970Average$1,292FlexibilityNo cancel feeOn-time74%
Search EVA Air flights

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How does Cheapflights help users find flights from Seattle to Phnom Penh?

When you search for this flight from Seattle to Phnom Penh, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Phnom Penh?

Cheapflights helps you find that perfect flight to Phnom Penh from Seattle by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Seattle to Phnom Penh with no change fees?

Yes, we can. To see specific flights from Seattle to Phnom Penh with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Seattle to Phnom Penh become cheaper?

Of course! You can now track prices for flights from Seattle to Phnom Penh and get an alert from Cheapflights when they change. Have a valid email address ready and make a flight search when you’re ready to set up your price alert.

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