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Phnom Penh

$969+ 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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — PNH
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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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 July 29, 2025.

Round-trip from

$969
(Gurufare)

Popular in

June

Cheapest in

February

Average price

$1,499
From Portland to Phnom Penh Pochentong
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($256 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
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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 July 29, 2025.

This Gurufare deal was found by Cheapflights users on 7/29. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/187:20 amPDX - PNH
2 stops36h 20mMultiple Airlines
Tue 12/212:25 amPNH - PDX
2 stops27h 54mMultiple Airlines
Deal found 7/29$969
This oojo deal was found by Cheapflights users on 7/27. 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.
Thu 9/118:10 pmPDX - PNH
2 stops47h 40mChina Airlines
Thu 9/185:10 pmPNH - PDX
2 stops40h 00mChina Airlines
Deal found 7/27$975
This oojo deal was found by Cheapflights users on 7/29. 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.
Sun 11/23:30 pmPDX - PNH
2 stops40h 25mAsiana Airlines
Tue 12/211:55 pmPNH - PDX
2 stops38h 24mAsiana Airlines
Deal found 7/29$980
This FlightHub deal was found by Cheapflights users on 7/29. 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 11/187:20 amPDX - PNH
3 stops34h 15mSingapore Airlines
Wed 12/37:40 pmPNH - PDX
2 stops32h 39mSingapore Airlines
Deal found 7/29$1,048
This Ovago deal was found by Cheapflights users on 7/26. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2911:15 amPDX - PNH
2 stops20h 55mKorean Air
Thu 8/1411:30 pmPNH - PDX
2 stops31h 29mKorean Air
Deal found 7/26$1,296
This Ovago deal was found by Cheapflights users on 7/28. 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.
Mon 10/139:33 pmPDX - PNH
3 stops52h 42mQatar Airways
Mon 11/105:10 pmPNH - PDX
3 stops41h 57mQatar Airways
Deal found 7/28$1,385
This Booking.com deal was found by Cheapflights users on 7/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/133:25 pmPDX - PNH
2 stops31h 45mAir Canada
Mon 11/107:40 pmPNH - PDX
3 stops37h 50mAir Canada
Deal found 7/27$1,439
This oojo deal was found by Cheapflights users on 7/29. 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.
Sun 11/29:30 pmPDX - PNH
2 stops35h 45mPhilippine Airlines
Sat 11/291:15 amPNH - PDX
2 stops47h 20mPhilippine Airlines
Deal found 7/29$1,469
This Gurufare deal was found by Cheapflights users on 7/28. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/136:29 amPDX - PNH
2 stops26h 46mChina Eastern
Sun 11/912:15 amPNH - PDX
2 stops30h 57mChina Eastern
Deal found 7/28$1,738

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 July 29, 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 11/18

7:20 am-10:40 am

2 stops36h 20m

Phnom Penh Pochentong

Tue 12/2

12:25 am-1:19 pm

2 stops27h 54m

$969

PortlandPhnom Penh

PDX - PNH

PDXPNH

Portland

Thu 9/11

8:10 pm-9:50 am

2 stops47h 40m

Phnom Penh Pochentong

Thu 9/18

5:10 pm-7:10 pm

2 stops40h 00m

$975

PortlandPhnom Penh

PDX - PNH

PDXPNH

Portland

Sun 11/2

3:30 pm-10:55 pm

2 stops40h 25m

Phnom Penh Pochentong

Tue 12/2

11:55 pm-11:19 pm

2 stops38h 24m

$980

PortlandPhnom Penh

PDX - PNH

PDXPNH

Portland

Tue 11/18

7:20 am-8:35 am

3 stops34h 15m

Phnom Penh Pochentong

Wed 12/3

7:40 pm-1:19 pm

2 stops32h 39m

$1,048

PortlandPhnom Penh

PDX - PNH

PDXPNH

Portland

Mon 10/13

9:33 pm-4:15 pm

3 stops52h 42m

Phnom Penh Pochentong

Mon 11/10

5:10 pm-8:07 pm

3 stops41h 57m

$1,385

PortlandPhnom Penh

PDX - PNH

PDXPNH

Portland

Mon 10/13

3:25 pm-1:10 pm

2 stops31h 45m

Phnom Penh Pochentong

Mon 11/10

7:40 pm-6:30 pm

3 stops37h 50m

$1,439

PortlandPhnom Penh

PDX - PNH

PDXPNH

Portland

Sun 11/2

9:30 pm-12:15 am

2 stops35h 45m

Phnom Penh Pochentong

Sat 11/29

1:15 am-9:35 am

2 stops47h 20m

$1,469

PortlandPhnom Penh

PDX - PNH

PDXPNH

Portland

Mon 10/13

6:29 am-11:15 pm

2 stops26h 46m

Phnom Penh Pochentong

Sun 11/9

12:15 am-4:12 pm

2 stops30h 57m

$1,738

PortlandPhnom Penh

PDX - PNH

PDXPNH

Portland

Mon 11/17

12:40 am-10:25 pm

2 stops30h 45m

Phnom Penh Pochentong

Wed 12/3

11:45 pm-1:46 pm

2 stops29h 01m

$5,191

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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, March is the cheapest month in which you can book a flight from Portland to Phnom Penh (average of $988). Flying from Portland to Phnom Penh in June is currently the most expensive (average of $1,549). 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 July 29, 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.

How much does it cost to fly round-trip from Portland to Phnom Penh?

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 July 29, 2025.
Peruse reviews from past customers who have flown with Korean Air, China Airlines, and Asiana Airlines from Portland to Phnom Penh to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,121 reviews

Crew

8.7

Overall

8.4

Food

8.1

Comfort

8.2

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,121 reviews
Korean Air
8.4
Very good
1,121 reviews

Crew

8.7

Overall

8.4

Food

8.1

Comfort

8.2

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
China Airlines
8.3
Very good
754 reviews
Korean Air
8.4
Very good
1,121 reviews

Crew

8.7

Overall

8.4

Food

8.1

Comfort

8.2

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Asiana Airlines
8.2
Very good
465 reviews
Korean Air
8.4
Very good
1,121 reviews

Crew

8.7

Overall

8.4

Food

8.1

Comfort

8.2

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Singapore Airlines
8.1
Very good
1,335 reviews
Korean Air
8.4
Very good
1,121 reviews

Crew

8.7

Overall

8.4

Food

8.1

Comfort

8.2

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Qatar Airways
7.4
Good
3,609 reviews
Korean Air
8.4
Very good
1,121 reviews

Crew

8.7

Overall

8.4

Food

8.1

Comfort

8.2

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

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 $975, China Airlines will fly you from Portland to Phnom Penh and back. In addition to China Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Asiana Airlines and Singapore Airlines - these airlines can fly you to your destination from $980 and $1,048, respectively. China Airlines is 21% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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, March is the cheapest month in which you can book a flight from Portland to Phnom Penh (average of $988). Flying from Portland to Phnom Penh in June is currently the most expensive (average of $1,549). 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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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 5 airlines flying from Portland to Phnom Penh

Discover the top 5 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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$863Average$1,049FlexibilityNo cancel feeOn-time76%
Singapore AirlinesCheapest$934Average$1,181FlexibilityNo cancel feeOn-time81%
Korean AirCheapest$952Average$1,409FlexibilityNo cancel feeOn-time81%
China AirlinesCheapest$1,036Average$1,096FlexibilityNo cancel feeOn-time70%
EVA AirCheapest$1,167Average$1,396FlexibilityNo cancel feeOn-time74%

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