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Cheap flights from Portland to Phnom Penh from $2,251

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Phnom Penh departing on 10/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Portland to Phnom Penh (PDX-PNH)

Cheap round-trip flights

Logo
11:58 pm - 6:55 amPDX-PNH
40h 57m2 stops
Logo
7:50 pm - 12:36 pmPNH-PDX
31h 46m2 stops
$2,251
Find Deal
Mon, Oct 13 - Sat, Nov 15
Logo
11:58 pm - 6:55 amPDX-PNH
40h 57m2 stops
Logo
7:50 pm - 12:36 pmPNH-PDX
31h 46m2 stops
$2,519
Find Deal
Mon, Oct 13 - Sat, Nov 15

momondo 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, momondo users made 832,500 searches. Data last updated September 9, 2025.
Use the filters below to find and compare flights from Portland to Phnom Penh that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandPhnom Penh

PDX - PNH

PDXPNH

Portland

Mon 10/13

11:58 pm-6:55 am

2 stops40h 57m

Phnom Penh Pochentong

Sat 11/15

7:50 pm-12:36 pm

2 stops31h 46m

$2,251

PortlandPhnom Penh

PDX - PNH

PDXPNH

Portland

Mon 10/13

11:58 pm-6:55 am

2 stops40h 57m

Phnom Penh Pochentong

Sat 11/15

7:50 pm-12:36 pm

2 stops31h 46m

$2,519

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Phnom Penh from

How to get the cheapest flight ticket from Portland to Phnom Penh

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Portland and Phnom Penh?

What is the cheapest month to fly to Phnom Penh?

In general, August is the cheapest month to fly from Portland to Phnom Penh. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,070. If you aren’t able to travel to Phnom Penh during the month of August, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $1,096.

What is the cheapest day to depart on your flight to Phnom Penh?

The cheapest day to depart from Portland to Phnom Penh is on a Wednesday. Travelers who choose to depart for Phnom Penh on a Wednesday will often find tickets for as low as $1,095. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Portland to Phnom Penh for around $1,304.

What is the cheapest time of day to depart on your flight to Phnom Penh?

According to our data, the cheapest time of day to fly to Phnom Penh is in the morning. momondo users have found flights departing from Portland to Phnom Penh in the morning for as low as $1,224. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Phnom Penh are more costly in the afternoon, with an average ticket price of $1,499. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from Portland to Phnom Penh

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Phnom Penh according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland to Phnom Penh (PDX to PNH) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Phnom Penh

Direct flights

None
There are no direct flights from Portland to Phnom Penh. There are no popular flight routes from Portland to Phnom Penh.
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  • How far is Portland to Phnom Penh Pochentong by plane?

    The straight-line distance from Portland to Phnom Penh Pochentong is 7502.2 mi. Typically, this will take 40h 57m by plane in normal conditions.

  • When did momondo last update prices for flights from Portland Airport to Phnom Penh Pochentong Airport?

    Prices for flights from Portland Airport to Phnom Penh Pochentong Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Portland Airport to Phnom Penh Pochentong Airport?

  • How old do you have to be to fly from Portland Airport to Phnom Penh Pochentong Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Phnom Penh Pochentong Airport.

  • What documentation or ID do you need to fly to Phnom Penh Pochentong Airport?

    The travel and health documents required for your trip to Phnom Penh Pochentong Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Phnom Penh Pochentong Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Portland to Phnom Penh?

Best airlines flying from Portland to Phnom Penh

Compare and see reviews for airlines that fly from Portland to Phnom Penh with momondo
Airline
Rating
Free Cancellation
Price
Asiana AirlinesPriceFrom $863Free CancellationRating
8.2
480 reviews
Search Asiana Airlines flights
Korean AirPriceFrom $952Free CancellationRating
8.4
1,139 reviews
Search Korean Air flights
China AirlinesPriceFrom $1,036Free CancellationRating
8.3
767 reviews
Search China Airlines flights
EVA AirPriceFrom $1,141Free CancellationRating
8.4
1,236 reviews
Search EVA Air flights

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Phnom Penh?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Portland to Phnom Penh. momondo saves you time and could save you money on your trip.

Can I find flights from Portland to Phnom Penh with flexible booking policies on momondo?

All flight searches from Portland to Phnom Penh on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Portland to Phnom Penh?

Once all potential Portland to Phnom Penh flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Portland to Phnom Penh right now. Can momondo alert me if prices change?

Price alerts on flights to Phnom Penh from Portland are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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