Title: Cheap Flights from Phnom Penh to Seattle (PNH to SEA) - Expedia.co.uk ![](https://images.trvl-media.com/place/178307/82efb684-8d05-4b09-b7ea-52d5ab4ea1ac.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/178307/82efb684-8d05-4b09-b7ea-52d5ab4ea1ac.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from Phnom Penh (PNH) to Seattle (SEA) - [Return](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Phnom Penh Intl. Airport (PNH) to Seattle-Tacoma International Airport (SEA) - ![British Airways](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_BA.svg) British Airways [](https://www.expedia.co.uk/Flights-Search?leg1=from:pnh,to:sea,departure:29/09/2025TANYT&leg2=from:sea,to:pnh,departure:06/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BA"}}]) - ![easyJet](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_U2.svg) easyJet [](https://www.expedia.co.uk/Flights-Search?leg1=from:pnh,to:sea,departure:29/09/2025TANYT&leg2=from:sea,to:pnh,departure:06/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"U2"}}]) - ![Lufthansa](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LH.svg) Lufthansa [](https://www.expedia.co.uk/Flights-Search?leg1=from:pnh,to:sea,departure:29/09/2025TANYT&leg2=from:sea,to:pnh,departure:06/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LH"}}]) - ![Ryanair](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_FR.svg) Ryanair [](https://www.expedia.co.uk/Flights-Search?leg1=from:pnh,to:sea,departure:29/09/2025TANYT&leg2=from:sea,to:pnh,departure:06/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"FR"}}]) - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:pnh,to:sea,departure:29/09/2025TANYT&leg2=from:sea,to:pnh,departure:06/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![Jet2](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LS.svg) Jet2 [](https://www.expedia.co.uk/Flights-Search?leg1=from:pnh,to:sea,departure:29/09/2025TANYT&leg2=from:sea,to:pnh,departure:06/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LS"}}]) - ![Swiss International Air Lines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LX.svg) Swiss International Air Lines [](https://www.expedia.co.uk/Flights-Search?leg1=from:pnh,to:sea,departure:29/09/2025TANYT&leg2=from:sea,to:pnh,departure:06/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LX"}}]) ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 25% on select hotels after you book a flight\* ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.co.uk/login) ## Find the cheapest month to fly from Phnom Penh (PNH) to Seattle (SEA) ### November is typically the cheapest month to fly From £551 - £945 per traveller. Flight from Phnom Penh to Seattle route information | Origin airport | Phnom Penh Intl. | | --- | --- | | Destination airport | Seattle - Tacoma Intl. | | Distance | 11899 km | ## Compare flights from Phnom Penh to Seattle easily and book with confidence For travelling on business or for pleasure, Expedia makes it easy to book your flights from Phnom Penh to Seattle. Operating between them flights per day, airlines cover the route. And fly direct, getting you to Seattle - Tacoma Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Phnom Penh Intl. to Seattle - Tacoma Intl..   To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights.  Grab a great deal on your flight from Phnom Penh Intl. (PNH) to Seattle - Tacoma Intl. (SEA) The easiest way to view the best deals on flights from Phnom Penh to Seattle today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Phnom Penh Intl. to Seattle - Tacoma Intl. start at just and range up to .   To find an even better deal, try   - being flexible on your dates – midweek flights can be cheaper - looking for other airports near Phnom Penh and Seattle - booking your flight during , the cheapest month on this route - varying your flight times – early morning and late at night are sometimes cheaper  Why you should book your Phnom Penh to Seattle flight with Expedia! We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Phnom Penh Intl. to Seattle - Tacoma Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.   Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.   ## Frequently asked questions ### How much is a flight from PNH to Seattle - Tacoma Intl. Airport (SEA)? > Within the past 7 days on Expedia, for flights departing within the next year, the lowest price listed for a round-trip journey from PNH to SEA was . Cheap tickets don't last long, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from Phnom Penh Airport to SEA? > Each airline has its own set of terms and conditions. If you decide to cancel your getaway, visit our [Customer Service Portal](https://www.expedia.co.uk/service/?langid=1033). ### How do I find cheap flights from Phnom Penh Intl. Airport (PNH) to SEA that have flexible change policies? > Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Phnom Penh Airport to Seattle - Tacoma Intl. Airport (SEA) flights, you'll see a "no change fees" filter for you to select. ### How far is the flight from Phnom Penh Intl. Airport (PNH) to Seattle - Tacoma Intl. Airport (SEA)? > The distance is around 12,000 kilometres. Sleep mask? Check. A change of clothes? Check. We suggest you pack all the travel comforts for this long-haul Cambodia to SeaTac flight. ### Which airlines fly direct from Phnom Penh Intl. Airport (PNH) to Seattle - Tacoma Intl. Airport (SEA)? > If you want to fly straight from Phnom Penh Intl. Airport (PNH) to Sea-Tac Airport, you'll need to book a flight with at least one stop. Unfortunately, there aren't any airlines that fly directly on this route. ### Are Phnom Penh Intl. Airport (PNH) to Sea-Tac Airport flight tickets cheaper when they're purchased at the last minute? > Late planners can occasionally pick up a bargain, with some of the cheapest fares from Phnom Penh Intl. Airport (PNH) to Sea-Tac Airport emerging a few weeks prior to the departure date. If you'd rather plan ahead, Expedia compares and updates the best flight deals continuously — as early as 12 months in advance in some cases. It does depend on the carrier though, as not every airline advertises prices so far in advance. ## Explore a world of travel with Expedia - Trending Routes - Trending Flights - Top Flights Destinations - Nearby Airports - Cheap Flights from Other Airports - Expedia's Latest Trends ### Top Routes to Seattle - [Newark Liberty Intl. 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