PNH - SEA

$497 Find Cheap Flights from Phnom Penh to Seattle

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 Seattle 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 Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Phnom Penh to Seattle, 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 Seattle, as well as popular online travel agencies
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Cheap Flights from Phnom Penh to Seattle (PNH-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Phnom Penh to Seattle 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 Seattle

Tue, Aug 12 - Sat, Nov 15
 Logo
11:30 pm - 12:45 pmPNH-SEA
27h 15m1 stop
 Logo
12:10 am - 10:25 pmSEA-PNH
31h 15m1 stop
Sat, Nov 1 - Wed, Nov 26
Asiana Airlines Logo
11:55 pm - 2:55 pmPNH-SEA
29h 00m1 stop
Asiana Airlines Logo
12:10 am - 10:55 pmSEA-PNH
31h 45m1 stop
$837Asiana Airlines
Find Deal
Wed, Aug 27 - Sun, Nov 23
 Logo
11:55 pm - 12:45 pmPNH-SEA
26h 50m1 stop
 Logo
12:10 am - 10:25 pmSEA-PNH
31h 15m1 stop
Mon, Aug 25 - Tue, Nov 25
 Logo
11:30 pm - 12:45 pmPNH-SEA
27h 15m1 stop
 Logo
12:10 am - 10:25 pmSEA-PNH
31h 15m1 stop
Wed, Sep 17 - Mon, Oct 20
 Logo
11:30 pm - 12:30 pmPNH-SEA
27h 00m1 stop
 Logo
2:15 pm - 10:55 pmSEA-PNH
18h 40m1 stop
Sat, Aug 23 - Tue, Nov 25
Philippine Airlines Logo
1:15 am - 7:15 pmPNH-SEA
32h 00m1 stop
Philippine Airlines Logo
9:30 pm - 12:15 amSEA-PNH
35h 45m1 stop
$913Philippine Airlines
Find Deal
Sat, Aug 23 - Wed, Nov 26
Philippine Airlines Logo
1:15 am - 7:15 pmPNH-SEA
32h 00m1 stop
Philippine Airlines Logo
9:30 pm - 12:15 amSEA-PNH
35h 45m1 stop
$953Philippine Airlines
Find Deal
Fri, Sep 12 - Fri, Sep 19
Korean Air Logo
11:30 pm - 10:40 amPNH-SEA
25h 10m1 stop
Korean Air Logo
12:50 pm - 10:10 pmSEA-PNH
19h 20m1 stop
$981Korean Air
Find Deal
Fri, Sep 12 - Thu, Sep 18
EVA Air Logo
12:35 pm - 6:50 pmPNH-SEA
20h 15m1 stop
EVA Air Logo
12:30 am - 11:15 amSEA-PNH
20h 45m1 stop
$1,089EVA Air
Find Deal
Wed, Sep 17 - Thu, Oct 16
EVA Air Logo
12:35 pm - 7:30 pmPNH-SEA
20h 55m1 stop
EVA Air Logo
1:30 am - 11:15 amSEA-PNH
19h 45m1 stop
$1,137EVA Air
Find Deal
Booking Insights

KAYAK's insights & trends for Phnom Penh to Seattle flights

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

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

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

If your flying dates are flexible, you should consider flying to Seattle on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Tuesday is the most expensive day to fly from Phnom Penh to Seattle. For your return ticket, we recommend flying on a Tuesday and avoiding Sundays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Phnom Penh to Seattle, 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 Seattle is November, where tickets cost $964 (return) on average. On the other hand, the most expensive months are January and August, where the average cost of round-trip tickets is $1,350 and $1,297 respectively.

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

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 Seattle, 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 Seattle, you should book around 6 weeks before departure, which saves you about 18% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low seasonNovember
Cheapest flight$497
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 7% increase in price.
Flight from Phnom Penh to Seattle

When to book flights from Phnom Penh to Seattle

Are your dates flexible? Find out the best times to travel from Phnom Penh to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Phnom Penh to Seattle

  • What is the cheapest flight from Phnom Penh to Seattle?

    In the last 3 days, the lowest price for a flight from Phnom Penh to Seattle was $497 for a one-way ticket and $795 for a round-trip.

  • Do I need a passport to fly between Phnom Penh and Seattle?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Phnom Penh and on arrival in Seattle.

  • Which aircraft models fly most regularly from Phnom Penh to Seattle?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Phnom Penh to Seattle?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Phnom Penh and Seattle, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Phnom Penh to Seattle, EVA Air or Korean Air?

    The two airlines most popular with KAYAK users for flights from Phnom Penh to Seattle are EVA Air and Korean Air. With an average price for the route of $1,162 and an overall rating of 8.4, EVA Air is the most popular choice. Korean Air is also a great choice for the route, with an average price of $1,053 and an overall rating of 8.4.

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

    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 Seattle.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle 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 Seattle?

    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 Seattle with an airline and back to Phnom Penh with another airline. Booking your flights between Phnom Penh and SEA can sometimes prove cheaper using this method.

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

    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 Seattle from Phnom Penh up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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

 
See real verified KAYAK customer reviews for airlines flying from Phnom Penh to Seattle. 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 Seattle? 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 1222 reviews
8.3Comfort
8.4Boarding
8.1Food
8.6Crew
8.0Entertainment
Airline reviews

EVA airlines was excellent: on time or early, safe, courteous crew. Highly recommended.

10.0 ExcellentAnonymous, Jul 2025TPE - JFK
Read more EVA Air reviews

EVA airlines was excellent: on time or early, safe, courteous crew. Highly recommended.

EVA! What is going on with your food!?!? Pre pandemic I used to go to Taiwan at least twice a year and always flew EVA — the food was consistently tasty for airplane food. Post pandemic, it’s not great at all. Step it up!

Excellent service from check in to boarding the crew is so pleasant to asked

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.

Aircraft was late getting to the gate - probably due to weather. We left the gate one hour late and had to wait another hour since we lost our slot in the takeoff queue. Our box was very wet and was falling apart when we got to Clark. It appears that luggage was exposed to weather in TPE while waiting to be loaded. Crew, however, handled the delay well and was able to provide planned service.

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.

Very smooth flight. Superb crew, great food and service. Slept most of the way. Excellent airline.

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

I normally love Korean Air, but this trip was not great. We boarded the plan and were settling into our seats. My son and I use these leg swings and we used it on the trip over to Cambodia, but on the way back the flight attendant very rudely told us we could not use it and that it was against regulations. I asked to see the regulation, but never saw it. The food on this trip was horrible as well, Even my son's kids meal was disgusting so we didn't eat anything on the flight. Thankfully we brought snacks. Entertainment - what happened to the games?

One of the flight attendants stepped on my foot. I was on the aisle seat. A lady inside needed to get out. So Instood. Just then, a flight attentendant came wuicklybtheoughbthe aisle and stepprd on my sock covered toes. I let out a small sound. She stopped momentarily, but didn’t ask how I was just took off of the aisle. Never came back to see how I was. Fortunately, I was not really hurt other than a slight soreness in my toes. But I found that to be very negligent.

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

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

I love my Delta crew, they were so welcoming and helpful.

I absolutely loved my flight from Taipei to LAX. I was originally assigned to a different seat, however one of the stewardess noticed I was uncomfortable in my seat. She offered to move me to a more comfortable setting. Although she didn’t have to do what she did, I am more than grateful and thankful for her doing so. My longer flight felt much more comfortable, just by her taking notice. I really appreciate her.

Overall was a lovely experience. The crew were kind and courteous throughout the entire flight.

They need to improve on how the plane lands cause it was not smooth at all.

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

China Airlines crews are very excellent doing their job. Very friendly and hardworking. I will always choose China Airlines over and over. Thank you all for making my flight comfortable. God bless to all the staff. :)

Staff was so nice and very helpful with directions aswell!

Most relaxing long distance flight I have been on. And I have flown on many.

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…

The aircraft was massive (A-380) and became crowded with 400+ passengers on board.

My luggage didn’t arrive with my flight. Flight was delayed by nearly 2 hours while we sat on the plane and I almost missed my connecting flight and subsequently missed the last train from the airport so it took me another 2 hours to get to my destination after arriving, Crew skipped me several times when offering beverages, and I couldn’t get their attention at times because they wouldn’t even make eye contact with me. They didn’t give me a form for disembarking so I had to go to the back of the line after waiting an eternity for immigration. Paid for on flight wi- fi that didn’t work for most of the flight.

Love flying Asiana. Been using it for over a decade now.

Coming back to America was a peaceful flight everyone and everything was perfect

I had a bad experience coming from America to Thailand. On my connecting flight my check in suitcase was not put on the departing aircraft, I received my suitcase 24 hours after arriving in Bangkok and when I open my luggage my hand swelled up. The next morning when I put on an outfit from my suitcase my face swelled up and became numb. My entire vacation was ruined it seems that some kind of chemical was sprayed into suitcase and ruined my clothes and got me sick. The staff at my hotel called the airline and spoke to someone and they told me to file a complaint and gave my a website to do so. I did not file a complaint I felt like it would have fell on death ears. I had to throw away my brand new vacation clothes and suitcase and I had the worst vacation ever due to this happening to me.

The staff was courteous and the flight was very smooth. It was so nice to see the captain greeting the passengers at the end of the flights.

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.

Everything you need to know for your flight from Phnom Penh to Seattle

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