S$955 Cheap Flights from Seattle to Phnom Penh

Within the past 7 days on Expedia, for flights departing within the next year, the lowest price listed for a round-trip journey between Sea-Tac Airport and Phnom Penh Airport was S$1,757. Cheap tickets don’t last forever, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply.

Every air carrier has its own terms and conditions. If you decide to cancel your getaway, head to our Customer Service Portal.

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 SEA to Phnom Penh Airport flights, you’ll see a “no change fees” filter for you to select.

SeaTac to Cambodia is around 12,000 kilometres, so be prepared to spend a while in the air. Make sure you pack all the essentials, from your headphones to your hoodie. Toss in some snacks to munch on throughout your trip too.

If you want to travel straight from Seattle - Tacoma Intl. Airport (SEA) to PNH, you’ll need to book a flight with at least one stop. Unfortunately, there aren’t any airlines that fly directly between these airports.

Late planners can sometimes score a bargain, with some of the cheapest fares from SEA to Phnom Penh Airport showing up a few weeks prior to the departure date. If you’d rather book ahead of time, Expedia compares and updates the best flight deals continuously — as early as a year in advance in some cases. It depends on the carrier though, as not all airlines publish prices that far in advance.