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Cheap flights from Washington to Phnom Penh from $6,976

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Phnom Penh departing on 7/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Washington to Phnom Penh

Cheap one-way flights

Enter your travel dates to find the best prices.
British Airways Logo
1:30 pm - 10:00 am
SEA
-
PNH
54h 30m
2 stops
$6,976British Airways
Tue, Jul 14
British Airways Logo
8:20 pm - 10:00 am
SEA
-
PNH
47h 40m
3 stops
$6,999British Airways
Tue, Jul 14
British Airways Logo
8:20 pm - 10:00 am
SEA
-
PNH
47h 40m
2 stops
$12,829British Airways
Sun, Jul 12
British Airways Logo
8:20 pm - 10:00 am
SEA
-
PNH
47h 40m
3 stops
$12,842British Airways
Sun, Jul 12

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momondo Fare Finder

 
Customize your flight search to find flights from State of Washington 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 June 23, 2026.
Use the filters below to find and compare flights from Washington to Phnom Penh that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest one-way

SeattlePhnom Penh

SEA - PNH

SEAPNH

Seattle/Tacoma Intl

Tue 7/14

1:30 pm-10:00 am

2 stops54h 30m

$6,976
Quickest one-way

SeattlePhnom Penh

SEA - PNH

SEAPNH

Seattle/Tacoma Intl

Tue 7/14

8:20 pm-10:00 am

3 stops47h 40m

$6,999

SeattlePhnom Penh

SEA - PNH

SEAPNH

Seattle/Tacoma Intl

Sun 7/12

8:20 pm-10:00 am

2 stops47h 40m

$12,829

SeattlePhnom Penh

SEA - PNH

SEAPNH

Seattle/Tacoma Intl

Sun 7/12

8:20 pm-10:00 am

3 stops47h 40m

$12,842

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 State of Washington 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 cheapest airline that flies from Washington to Phnom Penh Pochentong?

British Airways is the most popular carrier operating from Washington to Phnom Penh Pochentong

What airlines fly to Phnom Penh?

EVA Air, Asiana Airlines and Korean Air are the top three most popular airlines that fly to Phnom Penh from State of Washington according to our data. EVA Air is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Phnom Penh. Keep in mind that there are 8 different airlines that fly to Phnom Penh on a routine basis, so you have a few additional options to choose from.

Cheap State of Washington to Phnom Penh flight deals and tips

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

Fastest flight time

26h 05m

Direct flights

None
The fastest flight from State of Washington to Phnom Penh takes 26h 05m
There are no direct flights from State of Washington to Phnom Penh. There are no popular flight routes from State of Washington to Phnom Penh.
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Frequently asked questions about flying from Washington to Phnom Penh

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

    Prices for flights from Washington to Phnom Penh Pochentong Airport are updated daily.

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

  • How old do you have to be to fly from Washington to Phnom Penh Pochentong 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 Washington to Phnom Penh Pochentong Airport.

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

    The travel and health documents you'll need for your trip to Phnom Penh Pochentong Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Phnom Penh Pochentong Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from State of Washington to Phnom Penh

Compare and see reviews for airlines that fly from State of Washington to Phnom Penh with momondo
Airline
Rating
Free Cancellation
Price
Singapore AirlinesPriceFrom $702Free CancellationRating
8.2
1,549 reviews
Search Singapore Airlines flights
Asiana AirlinesPriceFrom $755Free CancellationRating
8.1
546 reviews
Search Asiana Airlines flights
Korean AirPriceFrom $775Free CancellationRating
8.4
1,218 reviews
Search Korean Air flights
China AirlinesPriceFrom $910Free CancellationRating
8.3
829 reviews
Search China Airlines flights
EVA AirPriceFrom $1,005Free CancellationRating
8.5
1,481 reviews
Search EVA Air flights

Why use momondo?

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

Finding the right flight to Phnom Penh from Washington is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Phnom Penh quick and easy, saving you time and money.

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

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

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

Once all potential Washington 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 Washington to Phnom Penh right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Phnom Penh, momondo offers a useful price alert feature which will track prices for flights to Phnom Penh from Washington and alert you when they change.

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