$482 Find Cheap Flights from Phnom Penh to Washington

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 10/30. 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
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Washington

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Phnom Penh to Washington, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Phnom Penh to Washington, as well as popular online travel agencies
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Best Washington Flight Deals from Phnom Penh

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Seattle
Seattle1 stop$791
Seattle
Seattle1 stop$791

Cheap Flights from Phnom Penh to Washington

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Phnom Penh to Washington that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Phnom Penh to Washington

Sun, Jun 29 - Mon, Jul 21
Asiana Airlines Logo
11:55 pm - 12:30 pmPNH-SEA
26h 35m1 stop
Asiana Airlines Logo
2:30 pm - 10:55 pmSEA-PNH
18h 25m1 stop
$791Asiana Airlines
Find Deal
Mon, Jun 30 - Mon, Jul 21
Asiana Airlines Logo
11:55 pm - 12:45 pmPNH-SEA
26h 50m1 stop
Asiana Airlines Logo
2:30 pm - 10:55 pmSEA-PNH
18h 25m1 stop
$820Asiana Airlines
Find Deal
Thu, Aug 14 - Wed, Oct 15
Philippine Airlines Logo
1:15 am - 7:15 pmPNH-SEA
32h 00m1 stop
Philippine Airlines Logo
11:35 pm - 12:15 amSEA-PNH
34h 40m1 stop
$840Philippine Airlines
Find Deal
Tue, Jul 1 - Sun, Jul 20
Philippine Airlines Logo
1:15 am - 7:15 pmPNH-SEA
32h 00m1 stop
Philippine Airlines Logo
11:35 pm - 12:15 amSEA-PNH
34h 40m1 stop
$863Philippine Airlines
Find Deal
Sun, Jun 29 - Sat, Jul 19
China Airlines Logo
10:50 am - 7:30 pmPNH-SEA
22h 40m1 stop
China Airlines Logo
1:40 am - 4:05 pmSEA-PNH
24h 25m1 stop
$1,112China Airlines
Find Deal
Sun, Jun 29 - Sat, Jul 19
China Airlines Logo
10:50 am - 8:04 amPNH-SEA
35h 14m2 stops
China Airlines Logo
1:40 am - 4:05 pmSEA-PNH
24h 25m1 stop
$1,125China Airlines
Find Deal
Fri, Jul 18 - Wed, Jul 23
EVA Air Logo
12:35 pm - 7:50 pmPNH-SEA
21h 15m1 stop
EVA Air Logo
2:10 am - 11:15 amSEA-PNH
19h 05m1 stop
$1,162EVA Air
Find Deal
Fri, Jul 18 - Thu, Jul 24
Korean Air Logo
11:30 pm - 10:50 amPNH-SEA
25h 20m1 stop
Korean Air Logo
1:20 pm - 10:10 pmSEA-PNH
18h 50m1 stop
$1,169Korean Air
Find Deal
Tue, Jul 15 - Mon, Jul 21
EVA Air Logo
12:35 pm - 7:50 pmPNH-SEA
21h 15m1 stop
EVA Air Logo
1:10 am - 11:15 amSEA-PNH
20h 05m1 stop
$1,186EVA Air
Find Deal
Mon, Jun 30 - Wed, Jul 23
Korean Air Logo
11:30 pm - 2:00 pmPNH-SEA
28h 30m1 stop
Korean Air Logo
3:30 pm - 10:10 pmSEA-PNH
40h 40m2 stops
$1,415Korean Air
Find Deal
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KAYAK's insights & trends for Phnom Penh to Washington flights

Get data-powered insights and trends into flights from Phnom Penh to Washington to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Phnom Penh to Washington?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Phnom Penh to Washington, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Phnom Penh to Washington is November, when tickets cost $964 (return) on average. On the other hand, the most expensive months are July and January, when the average cost of round-trip tickets is $1,422 and $1,350 respectively.

What’s the cheapest day of the week to fly from Phnom Penh to Washington?

The average price of all round-trip flights from Phnom Penh to Washington clicked on KAYAK for each day over the last 12 months.

When flying from Phnom Penh to Washington, you should consider leaving on a Wednesday and avoid Tuesdays if you are looking for the best rates. For your return to Phnom Penh, you’ll find the best rates on Tuesdays and the most expensive ones on Sundays.

How far in advance should I book a flight from Phnom Penh to Washington?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Phnom Penh to Washington, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Phnom Penh to Washington, you should book around 6 weeks before departure. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.


Good to know

Low seasonNovember
High seasonJune
Cheapest flight$482
Best time to beat the crowds with an average 16% 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 from Phnom Penh to Washington 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 from Phnom Penh to Washington with an airline and back 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 from Phnom Penh to Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Washington?

    The cheapest time of day to fly to Washington is generally in the afternoon, when round-trip flights cost $992 on average. Morning departures are around 11% more expensive than evening flights, on average. The most expensive time of day to fly to Washington is generally in the morning, which is peak travel time and where the average cost of a ticket is $1,354.

Reviews of the top 4 airlines serving from Phnom Penh to Washington

 
See real verified KAYAK customer reviews for airlines flying from Phnom Penh to Washington. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
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.
8.4
EVA AirOverall score based on 1204 reviews
8.4Boarding
8.1Food
8.3Comfort
8.0Entertainment
8.6Crew
Airline reviews

I have never heard of EVA air before but I am so happy my wife and I were able to flight on their planes twice. Everything on these flights just felt better than their competitors. As someone with longer legs any bit of extra leg spaces is appreciated. The different options for food and drinks were also a plus. They were extra careful to make sure my wife's eating restrictions were taken care for. They had a before take off and landing announcements on the built in tablets for each seat and it gave out information that was very helpful. Such as what and how to declare your items in the specific country you landed in, any odd items that may be illegal to bring it (and even the reasoning why) and any other information you might need to make your post flight experience better. Oh and the seats were more comfortable, had more ability to lean and the headrest was much better for flight sleeping. The only downside was there were "forced" ads on the tablet at take off for maybe 5-10 minutes but honestly, this flight was the cheapest option and had all the benefits listed above that is such an easy trade off. Im keeping an eye out for EVA air going forward.

10.0 ExcellentAnonymous, May 2025TPE - SEA
Read more EVA Air reviews

I have never heard of EVA air before but I am so happy my wife and I were able to flight on their planes twice. Everything on these flights just felt better than their competitors. As someone with longer legs any bit of extra leg spaces is appreciated. The different options for food and drinks were also a plus. They were extra careful to make sure my wife's eating restrictions were taken care for. They had a before take off and landing announcements on the built in tablets for each seat and it gave out information that was very helpful. Such as what and how to declare your items in the specific country you landed in, any odd items that may be illegal to bring it (and even the reasoning why) and any other information you might need to make your post flight experience better. Oh and the seats were more comfortable, had more ability to lean and the headrest was much better for flight sleeping. The only downside was there were "forced" ads on the tablet at take off for maybe 5-10 minutes but honestly, this flight was the cheapest option and had all the benefits listed above that is such an easy trade off. Im keeping an eye out for EVA air going forward.

I have never heard of EVA air before but I am so happy my wife and I were able to flight on their planes twice. Everything on these flights just felt better than their competitors. As someone with longer legs any bit of extra leg spaces is appreciated. The different options for food and drinks were also a plus. They were extra careful to make sure my wife's eating restrictions were taken care for. They had a before take off and landing announcements on the built in tablets for each seat and it gave out information that was very helpful. Such as what and how to declare your items in the specific country you landed in, any odd items that may be illegal to bring it (and even the reasoning why) and any other information you might need to make your post flight experience better. The only downside was there were "forced" ads on the tablet at take off for maybe 5-10 minutes but honestly, this flight was the cheapest option and had all the benefits listed above that is such an easy trade off. Im keeping an eye out for EVA air going forward.

Sub sandwhich for a snack through mid flight and giving a bottle water was a good idea

seats are pitched well. you don't feel too tight.

For the price, it was better than other airlines; quality of food and service was very good.

Great but I am not sure why I was placed in zone 4 for boarding despite being an Infinity Member??? Can you explain online. Thanks

Excellent food. Good service. Crammed Premium Economy seats. I Asked to change seats during check in. They told me the flight was fully booked. But on board I saw empty seats where I could have been easily relocated.

The food is quite mediocre. I had spaghetti and the tomato based sauce was quite salty and there were no other flavors, no spices used in the sauce.

basic and only minimum of service, they offer nothing special

friendly and professional cabin staff... seems cold and a bit aloof...

Korean Air is unlike any other major airline I have flown with. The grace and respect that the staff has from check in to de-boarding is unmatched. The flight attendants this time were especially wonderful to my five little children. They helped us rearrange to more suitable seating, brought our children’s meals, and patiently waited for them in the aisles when they had to use the bathroom. We felt so welcome and comfortable. I really appreciate the meal voucher when our flight was delayed. I am grateful to have had such an stress-free experience.

It's good overall. Flight was packed. Inflight entertainment choices were lacking.

They were very accommodating of a dietary issue. Nice movie & tv selections. Non-stop helped get through a very long (15 hr) flight

The delay in Korea was a pain and set us back a day. I have to give big props to Korean Air for setting up a hotel with dinner and transportation to and from the hotel. I also needed assistance with a wheelchair and they did an outstanding job.

Great except for the delay in Korea. Korean Air did a great job setting up a hotel for the night. I also needed assistance with a wheelchair and they were outstanding.

The flight was on time and very quick, as expected, but the leg room isn't great in coach seats.

The boarding process for Korean airlines is very straightforward and easy. You've never met such helpful and friendly people. The food was great and the entertainment options were excellent too. My teenage boys found programs they wanted to watch while I had fun watching a full season of the Last Man - the Blind Investigator (Japanese), which my wife enjoyed too. My only complaint was that it takes a very long time to taxi at ICN (20 minutes) and the pilot had to hold at the gate for 10 minutes after our scheduled departure time, which meant we got to Seattle 27 minutes late. Luckily I had a long enough connection to make my next flight, but just barely.

Just a typical domestic poor flight nothing more. There is no food choices in such a flight. Crew doesn't really care if you are on-board or not

My second flight wasn't better than the first one. And this is 14 hours trip, crew came out only to offer food and the choices was poor. This food choices are good for Asian people but not for westerners. The breakfast kind thing was a corn sausage really disgusting. The air-conditioned blower really blow high and cold, turn out on my arrival to feel seek, that makes the trip uncomfortable. The crew didn't not really come out during the trip to offer drinks or snacks. No fruits available. Very poor service

Our seat row plus one ahead and behind we're completely overlooked during beverage service...

I did not like how the plane landed. It was not smooth.

Been flying with China Airline over years many times. Good experience with them, no issues.

It was our first time flying with China Airlines and had a very nice experience. The airline staff & crews both on the ground and air were very nice. Food on the plane was very good. Will recommend it to family and friends.

Not great, will likely try to fly another or maybe I should have upgraded my ticket? Needed Air…

I don’t think I’ll be flying them again. Tight seats, no flowing air or air nozzles that you can turn air on you, for those who could have motion sickness this would be your worst nightmare. The pilot was great and experienced (which is what you want when flying 12 hours) overall I’m thankful knowledgeable pilots!

Very routh cabin crew food is only 2 meals for 13 hours fry with them They should get better training how to service good super routh language and talking with customer

I would like to commend the staff from this flight. They all looked happy and I can tell they love what they are doing and constantly smiling while serving the passengers. Special mention to the guy FA in our section. I did not get his name but he is so far the best F.A I have ever encountered!

staff are super nice and effiecient! It was a very comfortable and relaxing flight

When I booked a premium economy ticket. I then had to pay $100+ to book my seat.

Boarding could have been a little bit better but other than that it was a pretty good experience. I think because of the stowaway to Paris France recently they are being extra diligent about boarding passes at the gate. But they boarded the back of the plane first, and that's something I really think needs to start in the USA.

The beefsteak on the lunch menu was excellent! I usually do not eat airplane food. I loved it.

Flight was too cold. I wore a regular cotton tee and it wasn’t enough. It was a night time flight so I would have thought a blanket would be provided to passengers. A 4 hour flight and no options for a meal? I flew Asiana the next day from Seoul to Manilla. Same duration, 4 hours. They give everyone a pillow and blanket and serve a meal. Why is United so cheap and holding back meals and amenities? Also, they promote too much gay stuff and DEI in their advertisements. Please be mindful of other beliefs and don’t shove your gay ideology down my throat.

Staff always with a smile and very helpful with my mom who has mobility issues.

It was amazing. I was not expecting the phenomenal customer service Asiana provides.

It was all perfect and very pleasant for such long flights

The seats felt very small. We were supplied with pillows and blankets, which was nice. Lots of noise from the bathroom, plus exterior noise. Made it hard to hear the entertainment system, even using my own noise-cancelling headphones. The food was really bad. I generally request a vegetarian meal and one was supplied, but the pasta was cold and hard and there was nothing pleasant about it. Two meals were served on this flight; one was a repeat of the meal I had had on the flight immediately preceding this one, which was bad enough I didn't even try it. Drinks were very limited. All I wanted was water, and on a 10.5 hour flight, I was given 3 cups of about 3 ounces each.

The seats felt very small. We were supplied with pillows and blankets, which was nice. Lots of noise from the bathroom, plus exterior noise. Made it hard to hear the entertainment system, even using my own noise-cancelling headphones. The food was really bad. I generally request a vegetarian meal and one was supplied, but the pasta was cold and hard and there was nothing pleasant about it. Drinks were very limited. All I wanted was water, and on a 4 hour flight, I was given 2 cups of about 3 ounces each.

We took business class, It was comfortable and I was able to sleep.

For the most part, it was an enjoyable experience. It's the 2nd half of the journey was a bit uncomfortable. It was on a noticable smaller plane compared to the previous one.

Only process that my luggage didn’t make it to my destination because of short connection but I understand

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