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

Our cheapest airline available from Seattle to Phnom Penh is Philippine Airlines. Our recent data shows that you can find tickets from as low as $808 on this airline. Additional options worth looking into are Asiana Airlines and China Airlines, starting at $964 and $980 round-trip. Philippine Airlines is 29% 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 Asiana Airlines. According to our data, you can fly for as low as $963. Users have also found prices from $1,080 and $1,746 on EVA Air and Qatar Airways, respectively.

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

Travelers seeking maximum savings on their Seattle to Phnom Penh flight should consider departing on Sunday mornings when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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

Consider EVA Air, China Airlines or Korean Air when booking your flight. These represent the most popular airlines when flying from Seattle to Phnom Penh.

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

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

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

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

What are some popular things to do or see while on a layover in Seoul?

The majority of Seoul visitors spend their time at Myeongdong Cathedral, Dongdaemun Market, and Bukchon Hanok Village. Myeongdong Cathedral, Dongdaemun Market, and Bukchon Hanok Village can be accessed by traveling approximately 30.4 mi, 31.6 mi, and 30.6 mi, respectively from Incheon Intl. Travelers in need of a car in Seoul can rent one for about $53 per day.

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

Users have found that leaving on a Monday can be a cost-effective option. It’s possible to save up to 12% 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 15 days in advance, which can save you up to 37% on flights from Seattle to Phnom Penh compared to booking the week you need them. Waiting 15 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 $787. For sooner than that we have options available in the next 3 days from $1,158.

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

Our data shows that January tends to be the cheapest month to fly to Phnom Penh from Seattle. Users have commonly found prices around $1,151 for the month, but tickets can be as low as $763. Due to multiple factors, prepare for potentially higher prices in June.

Most accurate provider : When it comes to deals on Seattle-Phnom Penh flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Seattle-Phnom Penh flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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.

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.

$808+ Flights from Seattle to Phnom Penh

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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.

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Phnom Penh Pochentong are usually found in January or March, booked 14 days in advance, depart on a Tuesday or Saturday and return on a Wednesday

Cheap flight deals from Seattle to Phnom Penh

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$808 (oojo)
Popular in	June
Cheapest in	January
Average price	$937

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

Search Deals

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

Search Deals

From Seattle/Tacoma Intl to Phnom Penh Pochentong

Search Deals

Highest demand for flights based on searches. 17% potential increase in price ($244 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($40 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Find flight deals from Seattle to Phnom Penh

Cheapest flights from Seattle to Phnom Penh
Explore the most affordable flight options available from Seattle to Phnom Penh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.

Wed 9/311:35 pmSEA - PNH

1 stop34h 40mPhilippine Airlines

Tue 9/91:15 amPNH - SEA

1 stop32h 00mPhilippine Airlines

Deal found 4/22

$808

Mon 4/2812:50 pmSEA - PNH

1 stop19h 20mKorean Air

Thu 5/2911:30 pmPNH - SEA

1 stop25h 10mKorean Air

Deal found 4/22

$838

Thu 10/2310:15 amSEA - PNH

1 stop41h 25mSingapore Airlines

Tue 11/257:45 pmPNH - SEA

1 stop50h 25mSingapore Airlines

Deal found 4/22

$871

Wed 9/32:15 pmSEA - PNH

1 stop18h 40mAsiana Airlines

Wed 9/1011:55 pmPNH - SEA

1 stop26h 35mAsiana Airlines

Deal found 4/22

$964

Tue 9/21:40 amSEA - PNH

1 stop24h 25mChina Airlines

Wed 9/1010:50 amPNH - SEA

2 stops37h 04mChina Airlines

Deal found 4/22

$980

Thu 5/226:15 amSEA - PNH

2 stops27h 00mChina Eastern

Wed 5/2812:10 amPNH - SEA

2 stops30h 35mChina Eastern

Deal found 4/22

$992

Wed 9/34:59 pmSEA - PNH

2 stops33h 56mMultiple Airlines

Wed 9/102:10 pmPNH - SEA

2 stops31h 59mMultiple Airlines

Deal found 4/22

$997

Sun 9/71:30 amSEA - PNH

1 stop19h 45mEVA Air

Thu 9/1812:35 pmPNH - SEA

1 stop20h 55mEVA Air

Deal found 4/22

$1,058

Sat 4/2611:20 amSEA - PNH

3 stops38h 55mQatar Airways

Thu 6/195:40 pmPNH - SEA

2 stops33h 05mQatar Airways

Deal found 4/22

$1,337

Best flights from Seattle to Phnom Penh
Discover carefully curated flight deals from Seattle to Phnom Penh that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 22, 2025.

Wed 9/311:35 pmSEA - PNH

1 stop34h 40mPhilippine Airlines

Tue 9/91:15 amPNH - SEA

1 stop32h 00mPhilippine Airlines

Deal found 4/22

$808

Wed 9/32:15 pmSEA - PNH

1 stop18h 40mAsiana Airlines

Wed 9/1011:55 pmPNH - SEA

1 stop26h 35mAsiana Airlines

Deal found 4/22

$964

Tue 9/21:40 amSEA - PNH

1 stop24h 25mChina Airlines

Wed 9/1010:50 amPNH - SEA

2 stops37h 04mChina Airlines

Deal found 4/22

$980

Thu 5/226:15 amSEA - PNH

2 stops27h 00mChina Eastern

Wed 5/2812:10 amPNH - SEA

2 stops30h 35mChina Eastern

Deal found 4/22

$992

Wed 9/34:59 pmSEA - PNH

2 stops33h 56mMultiple Airlines

Wed 9/102:10 pmPNH - SEA

2 stops31h 59mMultiple Airlines

Deal found 4/22

$997

Sat 9/2710:15 amSEA - PNH

1 stop32h 25mSingapore Airlines

Sun 10/59:35 amPNH - SEA

1 stop61h 10mSingapore Airlines

Deal found 4/22

$1,029

Sun 9/71:30 amSEA - PNH

1 stop19h 45mEVA Air

Thu 9/1812:35 pmPNH - SEA

1 stop20h 55mEVA Air

Deal found 4/22

$1,058

Thu 5/87:20 amSEA - PNH

2 stops24h 50mKorean Air

Sun 5/1811:30 pmPNH - SEA

1 stop25h 10mKorean Air

Deal found 4/21

$1,083

Tue 5/1311:20 amSEA - PNH

3 stops38h 55mQatar Airways

Tue 5/205:40 pmPNH - SEA

2 stops33h 05mQatar Airways

Deal found 4/22

$1,337

Last-minute flights from Seattle to Phnom Penh
Discover last-minute flight deals from Seattle to Phnom Penh. Data last updated April 22, 2025 and is based on user searches.

Tue 4/221:10 amSEA - PNH

1 stop24h 55mChina Airlines

Wed 5/710:50 amPNH - SEA

2 stops37h 00mChina Airlines

Deal found 4/22

$1,061

Sat 4/2611:20 amSEA - PNH

3 stops38h 55mQatar Airways

Thu 6/195:40 pmPNH - SEA

2 stops33h 05mQatar Airways

Deal found 4/22

$1,337

Sun 4/271:30 amSEA - PNH

1 stop19h 45mEVA Air

Mon 5/2612:35 pmPNH - SEA

2 stops35h 20mEVA Air

Deal found 4/22

$1,069

Sun 4/271:30 amSEA - PNH

1 stop19h 45mMultiple Airlines

Thu 5/299:40 amPNH - SEA

2 stops23h 50mMultiple Airlines

Deal found 4/22

$1,083

Mon 4/2812:50 pmSEA - PNH

1 stop19h 20mKorean Air

Thu 5/2911:30 pmPNH - SEA

1 stop25h 10mKorean Air

Deal found 4/22

$838

Mon 4/282:15 pmSEA - PNH

1 stop18h 40mAsiana Airlines

Mon 5/2611:55 pmPNH - SEA

1 stop26h 35mAsiana Airlines

Deal found 4/22

$1,037

Mon 4/286:00 amSEA - PNH

2 stops37h 50mChina Airlines

Mon 5/265:10 pmPNH - SEA

1 stop16h 20mChina Airlines

Deal found 4/22

$1,075

Mon 4/287:10 amSEA - PNH

2 stops26h 05mChina Eastern

Wed 5/2812:10 amPNH - SEA

2 stops30h 35mChina Eastern

Deal found 4/22

$1,300

Mon 4/287:59 pmSEA - PNH

3 stops54h 16mQatar Airways

Thu 5/295:40 pmPNH - SEA

2 stops33h 05mQatar Airways

Deal found 4/22

$1,350

Mon 4/286:25 pmSEA - PNH

3 stops48h 15mSingapore Airlines

Mon 5/269:35 amPNH - SEA

3 stops61h 21mSingapore Airlines

Deal found 4/22

$3,363

Wed 5/71:15 amSEA - PNH

2 stops23h 00mMultiple Airlines

Sun 5/1811:55 amPNH - SEA

2 stops42h 15mMultiple Airlines

Deal found 4/21

$1,028

Thu 5/82:15 pmSEA - PNH

1 stop18h 40mAsiana Airlines

Sun 5/1811:55 pmPNH - SEA

1 stop26h 35mAsiana Airlines

Deal found 4/21

$965

One-way flights from Seattle to Phnom Penh
Search for one-way flight options from Seattle to Phnom Penh. Find affordable one-way fares based on user searches. Data last updated April 22, 2025.

Fri 6/65:35 amSEA - PNH

2 stops39h 40mMultiple Airlines

Deal found 4/22

$843

Fri 6/62:15 pmSEA - PNH

1 stop18h 40mAsiana Airlines

Deal found 4/22

$963

Thu 6/51:50 amSEA - PNH

1 stop19h 25mEVA Air

Deal found 4/22

$1,080

Fri 6/63:40 pmSEA - PNH

3 stops34h 35mQatar Airways

Deal found 4/22

$1,746

Tue 10/143:45 pmSEA - PNH

2 stops42h 30mPhilippine Airlines

Deal found 4/21

$2,396

Mon 10/131:10 amSEA - PNH

1 stop18h 40mChina Airlines

Deal found 4/21

$2,942

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to Phnom Penh that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattlePhnom Penh

SEA - PNH

SEAPNH

Seattle/Tacoma Intl

Wed 9/3

11:35 pm-12:15 am

1 stop34h 40m

Phnom Penh Pochentong

Tue 9/9

1:15 am-7:15 pm

1 stop32h 00m

$808

SeattlePhnom Penh

SEA - PNH

SEAPNH

Seattle/Tacoma Intl

Wed 9/3

2:15 pm-10:55 pm

1 stop18h 40m

Phnom Penh Pochentong

Wed 9/10

11:55 pm-12:30 pm

1 stop26h 35m

$964

SeattlePhnom Penh

SEA - PNH

SEAPNH

Seattle/Tacoma Intl

Tue 9/2

1:40 am-4:05 pm

1 stop24h 25m

Phnom Penh Pochentong

Wed 9/10

10:50 am-9:54 am

2 stops37h 04m

$980

SeattlePhnom Penh

SEA - PNH

SEAPNH

Seattle/Tacoma Intl

Thu 5/22

6:15 am-11:15 pm

2 stops27h 00m

Phnom Penh Pochentong

Wed 5/28

12:10 am-4:45 pm

2 stops30h 35m

$992

SeattlePhnom Penh

SEA - PNH

SEAPNH

Seattle/Tacoma Intl

Wed 9/3

4:59 pm-4:55 pm

2 stops33h 56m

Phnom Penh Pochentong

Wed 9/10

2:10 pm-8:09 am

2 stops31h 59m

$997

SeattlePhnom Penh

SEA - PNH

SEAPNH

Seattle/Tacoma Intl

Sat 9/27

10:15 am-8:40 am

1 stop32h 25m

Phnom Penh Pochentong

Sun 10/5

9:35 am-8:45 am

1 stop61h 10m

$1,029

SeattlePhnom Penh

SEA - PNH

SEAPNH

Seattle/Tacoma Intl

Sun 9/7

1:30 am-11:15 am

1 stop19h 45m

Phnom Penh Pochentong

Thu 9/18

12:35 pm-7:30 pm

1 stop20h 55m

$1,058

SeattlePhnom Penh

SEA - PNH

SEAPNH

Seattle/Tacoma Intl

Thu 5/8

7:20 am-10:10 pm

2 stops24h 50m

Phnom Penh Pochentong

Sun 5/18

11:30 pm-10:40 am

1 stop25h 10m

$1,083

SeattlePhnom Penh

SEA - PNH

SEAPNH

Seattle/Tacoma Intl

Tue 5/13

11:20 am-4:15 pm

3 stops38h 55m

Phnom Penh Pochentong

Tue 5/20

5:40 pm-12:45 pm

2 stops33h 05m

$1,337

SeattlePhnom Penh

SEA - PNH

SEAPNH

Seattle/Tacoma Intl

Fri 6/6

5:35 am-11:15 am

2 stops39h 40m

$843

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Showing 1-10 of 15 results

Compare providers for flights from Seattle to Phnom Penh

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 April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*3 stars
Cheapfaremart	Price Accuracy-	Trust Score*1 star
SmartFares	Price Accuracy1 star	Trust Score*1 star
Trip.com	Price Accuracy1 star	Trust Score*3 stars
oojo	Price Accuracy3 stars	Trust 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 Seattle-Phnom Penh flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Seattle-Phnom Penh flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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.

Cheapflights Insights

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

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

The best time to book flights from Seattle to Phnom Penh is 14 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, March is the cheapest month in which you can book a flight from Seattle to Phnom Penh (average of $994). Flying from Seattle to Phnom Penh in June is currently the most expensive (average of $1,582). 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.

What is the cheapest time of day to fly from SEA to 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 in the morning could potentially save you up to 20% on airfare.

Rainfall in Phnom Penh by month

In terms of precipitation, rainfall in Phnom Penh ranges from 0.0 - 9.8 inches per month. October is typically the wettest month, when rainfall can reach 9.8 in. January is typically the driest time to visit Phnom Penh when rainfall is around 0.0 in.

Temperature in Phnom Penh by month

If weather is an important factor for your trip to Phnom Penh, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 77.0 F).

Reviews of airlines servicing Phnom Penh

Read through reviews of airlines operating flights from Seattle to Phnom Penh, such as EVA Air, Korean Air and China Airlines. 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

1,179 reviews

Reviews

1 / 20

10.0

Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend

EVA Air

8.4

Very good

1,179 reviews

EVA Air

8.4

Very good

1,179 reviews

Reviews

1 / 20

10.0

Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend

Korean Air

8.4

Very good

1,062 reviews

EVA Air

8.4

Very good

1,179 reviews

Reviews

1 / 20

10.0

Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend

China Airlines

8.3

Very good

727 reviews

EVA Air

8.4

Very good

1,179 reviews

Reviews

1 / 20

10.0

Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend

Asiana Airlines

8.2

Very good

442 reviews

EVA Air

8.4

Very good

1,179 reviews

Reviews

1 / 20

10.0

Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend

Singapore Airlines

8.1

Very good

1,290 reviews

EVA Air

8.4

Very good

1,179 reviews

Reviews

1 / 20

10.0

Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend

Related info for your journey

What are the cheapest airlines flying from Seattle to Phnom Penh round-trip?
Our cheapest airline available from Seattle to Phnom Penh is Philippine Airlines. Our recent data shows that you can find tickets from as low as $808 on this airline. Additional options worth looking into are Asiana Airlines and China Airlines, starting at $964 and $980 round-trip. Philippine Airlines is 29% 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 Asiana Airlines. According to our data, you can fly for as low as $963. Users have also found prices from $1,080 and $1,746 on EVA Air and Qatar Airways, respectively.
Where are the most common layover locations when flying from Seattle to Phnom Penh?
Seattle to Phnom Penh flights have a layover in Seoul most of the time.
What are some popular things to do or see while on a layover in Seoul?
The majority of Seoul visitors spend their time at Myeongdong Cathedral, Dongdaemun Market, and Bukchon Hanok Village. Myeongdong Cathedral, Dongdaemun Market, and Bukchon Hanok Village can be accessed by traveling approximately 30.4 mi, 31.6 mi, and 30.6 mi, respectively from Incheon Intl. Travelers in need of a car in Seoul can rent one for about $53 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 Taipei City 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.
What is the cheapest month to book a flight from Seattle to Phnom Penh?
Currently, March is the cheapest month in which you can book a flight from Seattle to Phnom Penh (average of $994). Flying from Seattle to Phnom Penh in June is currently the most expensive (average of $1,582). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from Seattle to Phnom Penh

Airline	Cheapest	Average	Flexibility	On-time
Philippine Airlines	Cheapest$693	Average$959	FlexibilityNo cancel fee	On-time60%
Korean Air	Cheapest$756	Average$966	FlexibilityNo cancel fee	On-time81%
Asiana Airlines	Cheapest$774	Average$980	FlexibilityNo cancel fee	On-time76%
Singapore Airlines	Cheapest$796	Average$1,071	FlexibilityNo cancel fee	On-time81%
China Airlines	Cheapest$916	Average$1,004	FlexibilityNo cancel fee	On-time70%
EVA Air	Cheapest$990	Average$1,250	FlexibilityNo cancel fee	On-time74%

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$808+ Cheap flights from Seattle (SEA) to Phnom Penh (PNH)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/3. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Seattle to Phnom Penh with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Phnom Penh Pochentong are usually found in January or March, booked 14 days in advance, depart on a Tuesday or Saturday and return on a Wednesday

Cheap flight deals from Seattle to Phnom Penh

Most accurate provider

Most trusted provider

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Seattle to Phnom Penh

Cheapest flights from Seattle to Phnom PenhExplore the most affordable flight options available from Seattle to Phnom Penh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.

Explore the most affordable flight options available from Seattle to Phnom Penh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to Phnom Penh that are best for you.

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 April.

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.

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

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

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Phnom Penh. Price data was last updated on April 18, 2025.

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

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

Find hourly flight availability from Seattle to Phnom Penh. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 22, 2025.

Rainfall in Phnom Penh by month

Plan your trip to Phnom Penh by taking into account the average rainfall totals by month.

Temperature in Phnom Penh by month

Plan your trip to Phnom Penh by taking into account the average temperature totals by month.

Reviews of airlines servicing Phnom Penh

Read through reviews of airlines operating flights from Seattle to Phnom Penh, such as EVA Air, Korean Air and China Airlines. 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 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?

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

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

What are some popular things to do or see while on a layover in Seoul?

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

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

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

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

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

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Alternative routes for Seattle to Phnom Penh

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Top 6 airlines flying from Seattle to Phnom Penh

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Cheapest flights from Seattle to Phnom Penh
Explore the most affordable flight options available from Seattle to Phnom Penh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.