Find cheap flights from Seattle to Siem Reap

1 adult
1 adult, Economy

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Siem Reap, 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 Seattle to Siem Reap, as well as popular online travel agencies
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KAYAK's insights & trends for Seattle to Siem Reap flights

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

Which airlines fly non-stop between Seattle and Siem Reap?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Seattle to Siem Reap.

There is just one airline that flies from Seattle to Siem Reap direct and that is Singapore Airlines. The best round-trip deal found from Singapore Airlines for the route is to Siem Reap (SAI) and costs $675.

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FAQs - booking Siem Reap flights

  • How does KAYAK find such low prices on flights from Seattle to Siem Reap?

    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 Seattle to Siem Reap.

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

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

    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 Seattle to Siem Reap 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 Seattle to Siem Reap?

    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 Seattle to Siem Reap 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 Siem Reap?

    The cheapest time of day to fly to Siem Reap is generally in the evening, when round-trip flights cost $1,201 on average. Morning departures are around 1% more expensive than evening flights, on average. The most expensive time of day to fly to Siem Reap is generally at night, which is peak travel time and where the average cost of a ticket is $1,262.

Reviews of the top airline flying from Seattle to Siem Reap

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Siem Reap. 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 Seattle to Siem Reap? 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.
8.1
Singapore AirlinesOverall score based on 1382 reviews
8.6Crew
8.0Comfort
8.0Entertainment
8.2Boarding
7.7Food
Airline reviews

The business class seats were very uncomfortable. When in lie flat position my legs were very restricted.

4.0 OkayRobert, Aug 2025SIN - SYD
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The business class seats were very uncomfortable. When in lie flat position my legs were very restricted.

Crew and service excellent. 2 hour delay for takeoff. SQ app showed flight on time.

Very good flight from Boarding to landing -efficient and comfortable with decent entertainment options

Excelent service and plenty of food and drinks during the flight. Flight crew very attentive to our needs. Leg room between rows are very disappointing.

Construction at PDX resulting in very lung walk from the rental car to the gate. SFO, extremely long walk between terminals to get to connecting Singapore airlines flight. My smart watch recorded a total of 3 miles.

Crew and service was excellent, but passengers should be offered a welcome drink before take off which did not happen. Food was very good. Unfortunately the lie-flat bed in business class was one of the most uncomfortable I have experienced. The configuration forces you to sleep with your legs at an angle instead of in a straight line, plus there is very little padding on the bed so it wasn't possible to sleep for more than 2-3 hours on an 18 hour flight. For what the airlines charges for a business class ticket their hard product leaves a lot to be desired.

Everything was great keep up the good work 😁, can't ask for more.

Flight from SFO did not include entertainment as it was not working the entire duration of the flight. Was informed that there would be a $350 voucher for the inconvenience. Uncertain how the voucher will be provided.

The food options and quality could use some more excitement and variety.

Great airline. Excellent service, good food & lots of TV movies/shows to choose from.

Everything you need to know for your flight from Seattle to Siem Reap

Information on your arrival and departure airports

Seattle (SEA)

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