Cheap Flights from Seattle to Siem Reap–Angkor

Compare Seattle to Siem Reap–Angkor flight deals

Find the cheapest month or even day of the year to fly to Siem Reap–Angkor

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Flight deals from Seattle to Siem Reap–Angkor

Looking for a cheap last-minute deal or the best return flight from Seattle to Siem Reap–Angkor Airport? If you want to travel next month, return fares start from R 19,323. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Seattle to Siem Reap–Angkor

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle to Siem Reap–Angkor flights are currently cheapest in September.

Seattle to Siem Reap–Angkor : Alternative routes

Compare routes from Seattle to Siem Reap below. You may find an airport to fly into that's cheaper, faster, or easier than Siem Reap–Angkor .

Seattle to Siem Reap: Flight information

The things to know before you go.
Cheapest flight foundR 5,759
Cheapest month to flySeptember

Finding cheap flights from Seattle to Siem Reap–Angkor : Frequently asked questions

The best price we found for a return flight from Seattle to Siem Reap–Angkor is R 15,017. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Seattle to Siem Reap–Angkor . But we found flights with one stop from R 15,017.
As of July 2026, there are no flights flying from Seattle to Siem Reap–Angkor .
The cheapest month to fly from Seattle to Siem Reap–Angkor is usually January.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Siem Reap–Angkor Airport on Friday, 29 January 2027.
No airlines currently offer direct flights between Seattle and Siem Reap–Angkor Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Siem Reap–Angkor but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Siem Reap is around 40 days in advance, so don’t leave your flight to the last minute.

The cheapest airline that flies to Siem Reap–Angkor is Singapore Airlines .

Flying from Seattle to Siem Reap Angkor Airport (SAI): What you need to know

  • Siem Reap is 15 hours ahead of Seattle. Siem Reap Angkor Airport is located in Siem Reap, which follows the UTC+7 timezone.

  • For a smooth journey, turn up at the airport two hours ahead of international flights and one hour before domestic departures. This will give you plenty of time to catch your flight from Seattle to SAI.

  • Popular months like July or holiday times such as Christmas and New Year will mean bigger lines at check-in and security. Play it safe and get to the airport even earlier. Arriving two hours before domestic flights and up four hours ahead of international flights is a wise idea.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • SEA is around 23 kilometres from central Seattle. If you're ride-sharing, driving or catching a taxi from the centre, it'll take 25 minutes or so to get there, depending on traffic conditions. If you're using public transport, expect the travel time to be around 35 minutes.

  • Want a relaxed start to your trip? Stay near Seattle-Tacoma International Airport. Whether you're catching an early flight from Seattle to Siem Reap Angkor Airport or prefer not to rush, these hotels are just the thing:

  • Seattle-Tacoma International Airport gets high marks for its on-time performance. 80% of flights that take off from SEA arrive at their destination as scheduled.

Seattle Paine Field International Airport (PAE)

  • PAE is around 40 kilometres from central Seattle. It'll take you 40 minutes or so to get to the airport in a car from the city centre. Public transport takes roughly 1 hour 30 minutes.

  • Want to enjoy an extra night away before boarding your Seattle to SAI flight? Relax in a hotel near Seattle Paine Field International Airport before your trip officially begins. Here's where you can stay:

  • Flights from Seattle Paine Field International Airport are known for their punctuality, with 80% of them touching down as expected.

About Siem Reap Angkor Airport (SAI)

  • Once your flight from Seattle to Siem Reap Angkor Airport has touched down, unwind and relax at a nearby hotel. Chansor Community Homestay 18 is a comfy option that's a quick drive from SAI.

Getting from Siem Reap Angkor Airport (SAI) to central Siem Reap

  • Central Siem Reap is around 40 kilometres from Siem Reap Angkor Airport. Journey times by car hire or taxi will vary based on traffic conditions, so do a little research ahead of your trip.

  • Travelling on public transport will take you roughly 25 minutes.

How to find the cheapest flights from Seattle to Siem Reap Angkor Airport (SAI)

  • R 5,759 is currently the lowest price for a one-way ticket from Seattle to Siem Reap Angkor Airport. Return flights start from R 15,017. These fares may change based on demand.

  • Booking early is often the key to scoring a cheap flight from Seattle to SAI. Prices tend to rise as demand increases, so the closer your departure date, the more you'll likely spend on your ticket.

  • The 'Whole month' tool will show you the cheapest Seattle to Siem Reap Angkor Airport tickets throughout the entire month. It's an easy way to find a bargain if your travel dates are flexible.

  • Finding a cheap plane ticket from Seattle to SAI is a breeze with Price Alerts. Simply set up one of these automatic alerts and we'll notify you when the price has dropped.

  • Find a cheap flight from Seattle to Siem Reap Angkor Airport by using the search filters. Select your preferred duration, departure time and airlines, then sort the results by 'Cheapest' for the best deals.

The best time to fly from Seattle to Siem Reap Angkor Airport (SAI)

  • It's time to work out your travel dates for your flight from Seattle to Siem Reap Angkor Airport (SAI). February is the peak month for travel to Siem Reap. If a slower pace sounds more appealing, go in September.

  • The warmest month in Siem Reap is March, with temperatures ranging between 22ºC (72ºF) and 38ºC (100ºF). Book your Seattle to SAI plane ticket then if that's your ideal forecast.

  • January has temperatures of between 18ºC (64ºF) and 33ºC (91ºF). Search for cheap tickets from Seattle to Siem Reap Angkor Airport around that time if you want to travel when it's cooler.

More about Siem Reap

Explore more of Cambodia

  • Siem Reap has plenty to offer, but there are so many other parts of Cambodia just waiting to be discovered. About 209 kilometres south of Siem Reap, a visit to Phnom Penh will keep you on the move. Don't miss top attractions like Royal Palace, Genocide museum and Documentation Centre of Cambodia.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.