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Find cheap flights from Phnom Penh to Washington from $738

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Phnom Penh to Washington departing on 5/28. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Tue 6/4
Tue 6/11

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Best Washington Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Seattle
Seattle1 stop$936
Spokane
Spokane2 stops$1,572
Portland
Portland2 stops$1,854

Good to know

Low season

February

High season

April

Cheapest flight

$738
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly and prices are also 6% lower on average.
Flight from Phnom Penh to Seattle

FAQs - booking Washington flights

  • How does KAYAK find such low prices on flights from Phnom Penh to Washington?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Phnom Penh to Washington.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Phnom Penh to Washington?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington from Phnom Penh is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Phnom Penh to Washington?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington with an airline and back to Phnom Penh with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Phnom Penh to Washington?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington from Phnom Penh up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Washington

  • Morning departure is around 22% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 4 airlines serving from Phnom Penh to Washington

 
Need help choosing which airline to fly with from Phnom Penh to Washington? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.2
Singapore AirlinesOverall score based on 1465 reviews
8.4Boarding
8.7Crew
7.8Food
8.1Comfort
8.2Entertainment
Airline reviews

My overall experience with Singapore Airlines is great. Will definitely fly Singapore airline again.

8.0 ExcellentAnonymous, Apr 2024SIN - JFK
Read more about Singapore Airlines reviews

My overall experience with Singapore Airlines is great. Will definitely fly Singapore airline again.

When boarding, after business class should be premium economy, but economy class already lined-up at the gate blocking premium economy to board. Singapore airline crew should done a better job to organize this chaos :( Thank you.

It seems paying premium economy does not make difference with economy. No priority boarding, not worthy paying extra$$$ for premium economy.

Flying with Singapore airlines is always excelllent - the crew are lovely and the food too is great. It’s my number 1 airline

They were able to assist my elderly father and myself after not being able to check in to scoot. The counter service was phenomenal. They did what they could to get us on the next plane so we could catch our Connecting flight. Scoot closed early on us so we ended up missing our flight.

They are great with every aspect of customer service. Helped my elderly father and aided him with using the restroom.

Even though it was a very full flight, the service was still excellent, the plane did not feel too cramped and cabin crew made a sincere effort to help passengers find overhead space for stowing luggage.

Due to the delay of my first flight, my connecting flight with JetBlue was canceled by Singapore Airlines, but the JetBlue crew was very accommodating and rebooked a seat for me. The crew was very nice and had good attitude.

The overall operation needs to be improved. The in-flight services took forever and sometimes ran out of options.

We were able to check in 48 hours before departure. The boarding was a breeze. The business' seat is very large with large tv screen. The lunch and dinner were excellent with selection of wines and other drinks. The seat was converted to a totally flat bed for sleeping which was very comfortable as well. We will definitely fly with Singapore Airline again in the future.

Very comfortable Prem economy seats for a long haul flight. Had a problem with the tv that the crew fixed so was great!

While I was in great pain, the seat was sufficiently comfortable to allow me to rest and not be in so much pain.

we were upgraded which was a blessing and tender mercy for us. I fell the day before and was in extreme pain from knee to shoulder. Sitting in a more comfortable seat during the flight was an unexpected blessing and experience.

Not impressed with check in desk staff at Vancouver airport. Not a professional mind service and not cared or tried to help. Don’t think I would fly with them again

Very comfortable flights. Not so many new releases in terms of films.

I felt thirsty and asked the flight attendent for water, but no one came for more than half an hour.

Everything went smooth. All flights were on time No changing gates, . No changing flights . It was like a completely different airlines tha n the last time I used Cathay Pacific . The last flight, 2 months ago, I had before this one was from Philippines also . I got changed in Manila and was told it only added 2 hours onto my flight . My 20 hour return trip ended up being 30 hours return with a 10.0 hour layover in New York with no seats anywhere . Everyone was sleeping or sitting on the floor . Unlike the hotel I was given in Manila to wait for this flight home . I never thought I would use Cathay Pacific again . But I did and this time you were great! I should have complained about the flight and layover from Hell a couple months ago. Consider that I am complaining about that august/23 flight now . Thank you got the great flying experience on my way home from philippines .

I traveled to Singapore for 5 days, I didn’t receive my luggage until the 3rd day. When I received my luggage was broken which they fixed it supposedly. I never had such a poor experience with the any other airline. I honestly think it should be a compensation for all of my losses and suffering that I went through.

i booked vegetarian hindu meal for my flights from delhi to hong kong, and hong kong to los angeles. on first flight, they said that they do no have my meal information. thank fuilly some veg meals were still left and i could eat. However, on second flight they game me hindu non vegetarian meal, and I ate shrimp without knowing. pathetic.

The staff were excellent considering it was a jam packed flight. We had to wait nearly an hour for our baggage to appear on the carousel. That was a real shame.

If you are over 170 cm, i would implore you to select an exit row or front row seat. You will not be able to sleep. Extremely uncomfortable.

My second consecutive experience of flight delay between 1.5 and close to 2hr. Resulting upsetting my biz agenda and additional expenses on local transportation to catch up

Expensive Poor check-in process staff only arrived 2h before boarding which is not a par with international standards Cabin was overly warm No seat Pocket No in seat charging No entertainment No WiFi option Slow cabin service Limited purchasing options Boarding was good Staff were presentable Flight was safe and on time

The flight attendants were not passing out soft drinks. They skipped a lot of rows and passengers were complaining.

The boarding a bit late but overall no drama. Will fly with jetstar again someday for sure.

seat legroom was quite narrow, so i could feel the person’s knees behind me.

Honestly, I Wouldn’t fly Jetstar if I had a choice.

Paid top dollar, and outrageous add ons to get squeezed into an uncomfortable seat with the least leg room possible. Probably best to avoid air travel whenever possible, maybe forever.

They lost my luggage. Doesn't exactly make the experience great.

Leg room is just too short and food costs and is not good quality. But the big issue was they said that my luggage would be transferred to the next flight, so no need for me to exit customs, get a visa and reboard. However that didn't happen and my luggage is still, 2 days later, in Denpasar. So whilst the flight went on time and was fairly average, I think that the cost vs quality is not good enough.

The flight delay... but bus from the airport be on time

Bad experience, delay like no tomorrow. Original schedule departure time at 9:30pm, delayed until 12:05am only depart.

Great. Very satisfied with a direct flight from Penang back to HK international. Stewards in the cabin were very friendly and helpful. Would not hesitate to fly with Air Asia in the future.

Second time flying on AirAsia. They’re fine for a low cost carrier, so I don’t expect high level hospitality. They could have informed us that the flight would be delayed even if by a few minutes, instead of the passengers asking the gate agents why we’re not boarding 8 minutes before takeoff. And given some of the passengers on this particular flight were problematic, the crew did great handling such people.

Meh, it was AirAsia. It's not about a quality.

Great flight. Achieve my objecttive of travelling with less hassle .

They didn't have a single blanket for hire for a long haul overnight flight. This wasn't good enough even for a budget airline

Kayak shares with you the best price! and in my case it was Air Asia flight. Air Asia flight was on time, the boarding was seamless with FACES technology at KLIA2 and the pilot made a great smooth landing upon arrival. Excellent trip!

I left the city late and fortunately the flight was also delayed 50mins

Air Asia’s standard has dropped tremendously post pandemic. The whole organisation feels ‘soul-less’

Book cheap flights from Phnom Penh to Washington

Recent round-trip flight deals

5/22Wed
1 stopAsiana Airlines
26h 50mPNH-SEA
9/9Mon
1 stopAsiana Airlines
18h 35mSEA-PNH
$936
10/12Sat
1 stopAsiana Airlines
26h 50mPNH-SEA
10/16Wed
1 stopAsiana Airlines
18h 35mSEA-PNH
$985
7/13Sat
2 stopsSingapore Airlines
32h 07mPNH-SEA
9/22Sun
1 stopSingapore Airlines
32h 25mSEA-PNH
$1,433
7/16Tue
2 stopsSingapore Airlines
32h 46mPNH-SEA
9/22Sun
1 stopSingapore Airlines
32h 25mSEA-PNH
$1,448
5/21Tue
2 stopsPhilippine Airlines
45h 25mPNH-SEA
8/1Thu
2 stopsPhilippine Airlines
37h 47mSEA-PNH
$1,454
5/21Tue
2 stopsPhilippine Airlines
36h 00mPNH-SEA
9/9Mon
2 stopsPhilippine Airlines
26h 59mSEA-PNH
$1,777
7/19Fri
2 stopsEmirates
30h 35mPNH-SEA
9/23Mon
2 stopsEmirates
33h 20mSEA-PNH
$1,814
7/31Wed
2 stopsCathay Pacific
20h 27mPNH-SEA
10/11Fri
2 stopsCathay Pacific
31h 15mSEA-PNH
$1,824
7/26Fri
2 stopsEmirates
30h 35mPNH-SEA
10/1Tue
2 stopsEmirates
33h 20mSEA-PNH
$1,872
7/15Mon
2 stopsCathay Pacific
22h 19mPNH-SEA
9/23Mon
2 stopsCathay Pacific
25h 03mSEA-PNH
$1,885

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Recent one-way flight deals

5/28Tue
2 stops
31h 20mPNH-SEA
$738
5/31Fri
2 stops
35h 25mPNH-SEA
$789
5/29Wed
1 stopKorean Air
25h 10mPNH-SEA
$815
5/27Mon
1 stopKorean Air
28h 15mPNH-SEA
$820
5/11Sat
1 stopEVA Air
20h 55mPNH-SEA
$822
5/30Thu
1 stopEVA Air
20h 55mPNH-SEA
$833
5/11Sat
2 stopsSingapore Airlines
32h 10mPNH-SEA
$909
5/10Fri
2 stopsPhilippine Airlines
46h 07mPNH-SEA
$1,068
5/10Fri
2 stopsPhilippine Airlines
46h 07mPNH-SEA
$1,161
5/11Sat
3 stopsEmirates
40h 02mPNH-SEA
$1,907

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Phnom Penh - Washington Flights

Departure:

Phnom Penh (PNH)Cambodia

Return flight deals:

Washington - Phnom Penh

Cabin classes: