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Cheap flights from Phnom Penh to Seattle from $2,350

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Phnom Penh to Seattle departing on 10/4. 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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Find the cheapest flights from Phnom Penh to Seattle

Cheap round-trip flights

Multiple Airlines Logo
8:30 am - 8:09 pmPNH-SEA
49h 39m2 stops
Multiple Airlines Logo
11:59 pm - 6:45 amSEA-PNH
40h 46m2 stops
$2,350Multiple Airlines
Find Deal
Sat, Oct 4 - Fri, Jul 31

momondo Fare Finder

 
Customize your flight search to find flights from Phnom Penh to Seattle 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 17, 2025.
Use the filters below to find and compare flights from Phnom Penh to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Phnom PenhSeattle

PNH - SEA

PNHSEA

Phnom Penh Pochentong

Sat 10/4

8:30 am-8:09 pm

2 stops49h 39m

Seattle/Tacoma Intl

Fri 7/31

11:59 pm-6:45 am

2 stops40h 46m

$2,350

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Seattle from

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

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 Phnom Penh and Seattle?

What is the cheapest month to fly to Seattle?

In general, September is the cheapest month to fly from Phnom Penh to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $813. If you don’t want to visit Seattle in September, then you should wait until November to fly from Phnom Penh, when ticket prices are also cheap, with an average price of $953.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Phnom Penh is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $1,104. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Tuesday is the most expensive day to depart from Phnom Penh because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,403.

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

Flying to Seattle from Phnom Penh at noon is the least expensive time of day to depart. momondo users have found prices as low as $992 when looking at flights departing at noon. Flights to Seattle are more costly in the morning, with an average ticket price of $1,354. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

How have Phnom Penh to Seattle flight prices changed over time?

As of September 2025, prices for Phnom Penh to Seattle flights are approximately 15% cheaper when compared to flights at the same time last year.

When to book flights from Phnom Penh to Seattle

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

Cheap Phnom Penh to Seattle (PNH to SEA) flight deals and tips

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

Direct flights

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

    Phnom Penh Pochentong and Seattle/Tacoma Intl are 7420.4 mi apart from one another. In terms of flight time, this usually takes a little over 49h 39m.

  • When did momondo last update prices for flights from Phnom Penh Pochentong Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Phnom Penh Pochentong Airport to Seattle/Tacoma Intl Airport are updated daily.

  • How many operators does momondo search for flights from Phnom Penh Pochentong Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Phnom Penh Pochentong Airport to Seattle/Tacoma Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Phnom Penh Pochentong Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from Phnom Penh to Seattle

Compare and see reviews for airlines that fly from Phnom Penh to Seattle with momondo
Airline
Rating
Free Cancellation
Price
Asiana AirlinesPriceFrom $707Free CancellationRating
8.2
481 reviews
Search Asiana Airlines flights
Korean AirPriceFrom $831Free CancellationRating
8.4
1,140 reviews
Search Korean Air flights
China AirlinesPriceFrom $991Free CancellationRating
8.3
768 reviews
Search China Airlines flights
EVA AirPriceFrom $1,062Free CancellationRating
8.4
1,237 reviews
Search EVA Air flights

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Why use momondo?

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

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

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

Yes. All flights to Seattle from Phnom Penh on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Phnom Penh to Seattle.

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

Price alerts on flights to Seattle from Phnom Penh 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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