HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Phnom Penh

$1,014+ Cheap flights from Portland (PDX) 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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — PNH
Mar 31 — Apr 71
Mon 3/31
Mon 4/7
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland to Phnom Penh 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.

Cheap flight deals from Portland to Phnom Penh

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) 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 March 26, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,014
(United)

Popular in

June

Cheapest in

February

Average price

$1,182
Provider with most accurate pricing for Portland-Phnom Penh Pochentong flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Phnom Penh Pochentong flights.
Search Deals
From Portland to Phnom Penh Pochentong
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($207 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

Find flight deals from Portland to Phnom Penh

Cheapest flights from Portland to Phnom Penh
Explore the most affordable flight options available from Portland to Phnom Penh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 26, 2025.

This United deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/87:30 pmPDX - PNH
2 stops32h 10mMultiple Airlines
Thu 5/89:35 amPNH - PDX
2 stops28h 56mMultiple Airlines
Deal found 3/25$1,014
This KAYAK deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/116:11 amPDX - PNH
2 stops27h 04mChina Eastern
Sun 5/1812:10 amPNH - PDX
2 stops29h 58mChina Eastern
Deal found 3/25$1,478
This Ovago deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/97:00 amPDX - PNH
3 stops35h 40mSingapore Airlines
Sat 5/176:55 pmPNH - PDX
2 stops52h 50mSingapore Airlines
Deal found 3/25$1,583
This FlightHub deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/81:32 pmPDX - PNH
3 stops36h 43mQatar Airways
Thu 5/85:40 pmPNH - PDX
3 stops44h 04mQatar Airways
Deal found 3/25$1,592
This oojo deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/912:57 pmPDX - PNH
2 stops45h 18mPhilippine Airlines
Fri 5/161:15 amPNH - PDX
2 stops51h 18mPhilippine Airlines
Deal found 3/26$1,664

Cheapflights Fare Finder

Customize your flight search to find flights from Portland to Phnom Penh that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 26, 2025.
Use the filters below to find and compare flights from Portland to Phnom Penh that are best for you.

Fly from

Portland

Fly to

Phnom Penh

Route

Depart

Return

Price

PortlandPhnom Penh

PDX - PNH

PDXPNH

Portland

Tue 4/8

7:30 pm-5:40 pm

2 stops32h 10m

Phnom Penh Pochentong

Thu 5/8

9:35 am-12:31 am

2 stops28h 56m

$1,014

PortlandPhnom Penh

PDX - PNH

PDXPNH

Portland

Sun 5/11

6:11 am-11:15 pm

2 stops27h 04m

Phnom Penh Pochentong

Sun 5/18

12:10 am-4:08 pm

2 stops29h 58m

$1,478

PortlandPhnom Penh

PDX - PNH

PDXPNH

Portland

Wed 4/9

7:00 am-8:40 am

3 stops35h 40m

Phnom Penh Pochentong

Sat 5/17

6:55 pm-9:45 am

2 stops52h 50m

$1,583

PortlandPhnom Penh

PDX - PNH

PDXPNH

Portland

Wed 4/9

12:57 pm-12:15 am

2 stops45h 18m

Phnom Penh Pochentong

Fri 5/16

1:15 am-2:33 pm

2 stops51h 18m

$1,664

PortlandPhnom Penh

PDX - PNH

PDXPNH

Portland

Wed 4/9

1:25 pm-4:15 pm

3 stops36h 50m

Phnom Penh Pochentong

Sat 5/17

5:40 pm-7:18 am

3 stops51h 38m

$1,674

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Compare providers for flights from Portland 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 Portland to Phnom Penh in March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
JustAirTicketPrice Accuracy-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 Portland-Phnom Penh flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Phnom Penh flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Phnom Penh flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-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 Portland-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 Portland to Phnom Penh

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

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

Currently, February is the cheapest month in which you can book a flight from Portland to Phnom Penh (average of $1,002). Flying from Portland 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 PDX to PNH?

Find hourly flight availability from Portland 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 March 26, 2025.

It’s typically best to fly out from Portland to Phnom Penh in the morning. Doing so could potentially save you 19% on the flight price compared to flying at noon, which is usually more expensive.

Rainfall in Phnom Penh by month

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

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

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 March 26, 2025.
Singapore Airlines
8.1
Very good
1,284 reviews

Crew

8.6

Food

7.7

Overall

8.1

Boarding

8.2

Entertainment

8.0

Comfort

7.9

Reviews

1 / 20
2.0
Mediocre

Ketan,Nov 2024

SIN - AMD

Food was not good. It was like few days old.
Singapore Airlines
8.1
Very good
1,284 reviews
Singapore Airlines
8.1
Very good
1,284 reviews

Crew

8.6

Food

7.7

Overall

8.1

Boarding

8.2

Entertainment

8.0

Comfort

7.9

Reviews

1 / 20
2.0
Mediocre

Ketan,Nov 2024

SIN - AMD

Food was not good. It was like few days old.
Qatar Airways
7.4
Good
3,539 reviews
Singapore Airlines
8.1
Very good
1,284 reviews

Crew

8.6

Food

7.7

Overall

8.1

Boarding

8.2

Entertainment

8.0

Comfort

7.9

Reviews

1 / 20
2.0
Mediocre

Ketan,Nov 2024

SIN - AMD

Food was not good. It was like few days old.
Philippine Airlines
7.2
Good
840 reviews
Singapore Airlines
8.1
Very good
1,284 reviews

Crew

8.6

Food

7.7

Overall

8.1

Boarding

8.2

Entertainment

8.0

Comfort

7.9

Reviews

1 / 20
2.0
Mediocre

Ketan,Nov 2024

SIN - AMD

Food was not good. It was like few days old.
China Eastern
7.1
Good
135 reviews
Singapore Airlines
8.1
Very good
1,284 reviews

Crew

8.6

Food

7.7

Overall

8.1

Boarding

8.2

Entertainment

8.0

Comfort

7.9

Reviews

1 / 20
2.0
Mediocre

Ketan,Nov 2024

SIN - AMD

Food was not good. It was like few days old.

Related info for your journey

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

    Currently priced at $1,478, China Eastern will fly you from Portland to Phnom Penh and back. In addition to China Eastern, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Singapore Airlines and Qatar Airways - these airlines can fly you to your destination from $1,583 and $1,592, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portland 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 Portland to Phnom Penh?

    Currently, February is the cheapest month in which you can book a flight from Portland to Phnom Penh (average of $1,002). Flying from Portland 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

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

Alternative routes for Portland to Phnom Penh

See prices for flight routes from nearby airports that may be better suited for you.
Boise to Phnom Penh flights

Top 2 airlines flying from Portland to Phnom Penh

Discover the top 2 airlines that operate flights from Portland 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 March 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$1,050Average$1,180FlexibilityNo cancel feeOn-time81%
Korean AirCheapest$1,075Average$1,384FlexibilityNo cancel feeOn-time81%
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.